Ashly pema User manual

ASHLY AUDIO INC.
847 Holt Road Webster, NY 14580-9103 Phone: [phone]
Toll-Free: [phone] Fax: [phone] www.ashly.com
Protea Equipped Media Amplifier
Operating Manual

Operating Manual - Pema Protea Equipped Media Amplier
2
Important Safety Instructions
Consignes de sécurité à lire attentivement
The lightning flash with arrowhead symbol, within an equilateral triangle,
is intended to alert the user to the presence of uninsulated "dangerous
voltage" within the product's enclosure that may be of sufficient magnitude
to constitute a risk of electric shock to persons. The exclamation point
within an equilateral triangle is intended to alert the user to the presence
of important operating and maintenance instructions in the literature ac-
companying the device.
Le symbole de la flèche dans un triangle équilateral symbolisant la foudre
est prévu pour sensibiliser l’utilisateur à la présence de tension de voltage
non isolée à l’intérieur de l’appareil. Elle pourrait constituer un danger de
risque de décharge électrique pour les utilisateurs. Le point d’exclamation
dans le triangle équilatérale alerte l’utilisateur de la présence de consignes
qu’il doit d’abord consulter avant d’utiliser l’appareil.
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. To reduce the risk of re or electric shock, do not expose this apparatus to
rain or moisture.
6. Do not use this apparatus near water.
7. Clean only with dry cloth.
8. Do not block any ventilation openings. Install in accordance with the manu-
facturer’s instructions.
9. Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus.
10. Do not defeat the safety purpose of the polarized or grounding-type plug. A
polarized plug has two blades with one wider than the other. A grounding type
plug has two blades and a third grounding prong. The wide blade or the third
prong are provided for your safety. If the provided plug does not t into your
outlet, consult an electrician for replacement of the obsolete outlet.
11. Protect the power cord from being walked on or pinched particularly at plugs,
convenience receptacles, and the point where they exit from the apparatus.
12. Only use attachments/accessories specied by the manufacturer.
13. Use only with the cart, stand, tripod, bracket, or table specied by the
manufacturer, or sold with the apparatus. When a cart is used, use caution when
moving the cart/apparatus combination to avoid injury from tip-over.
14. Unplug this apparatus during lightning storms or when unused for long
periods of time.
15. Refer all servicing to qualied service personnel. Servicing is required when
the apparatus has been damaged in any way, such as power-supply cord or plug
is damaged, liquid has been spilled or objects have fallen into the apparatus, the
apparatus has been exposed to rain or moisture, does not operate normally, or
has been dropped.
1. Lisez ces instructions.
2. Conservez ces instructions.
3. Observez les avertissements.
4. Suivez ces instructions.
5. Pour réduire le risque de feu ou la décharge électrique, ne pas exposer cet
appareil pour pleuvoir ou l'humidité.
6. Ne pas utiliser l’appareil près de l’eau.
7. Le nettoyer à l’aide d’un tissus sec.
8. Ne pas bloquer les ouvertures de ventilation, installer selon les consignes du
fabricant.
9. Eloigner des sources de chaleur tel: radiateurs, fourneaux ou autres appareils
qui produisent de la chaleur.
10. Ne pas modier ou amputer le système de la mise à terre. Une prise avec
mise à terre comprend deux lames dont une plus large ainsi qu’une mise à
terre: ne pas la couper ou la modier. Si la prise murale n’accepte pas la che,
consulter un électricien pour qu’il remplace la prise désuète.
11. Protéger le cordon de secteur contre tous bris ou pincement qui pourraient
l’endommager, soit à la che murale ou à l’appareil.
12. N’employer que les accessoires recommandés par le fabricant.
13. N’utiliser qu’avec les systèmes de xation,chariots, trépied ou autres, ap-
prouvés par le fabricant ou vendus avec l’appareil.
14. Débrancher l’appareil lors des orages électriques ou si inutilisé pendant une
longue période de temps.
15. Un entretient effectué par un centre de service accrédité est exigé si
l’appareil a été endommagé de quelque façon: si il a été exposé à la pluie,,
l’humidité ou s’il ne fonctionne pas normalement ou qu’il a été échappé.
FCC Compliance
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
1. This device may not cause harmful interference
2. This device must accept any interference received, including interference that may cause undesired operation
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in both a commercial and residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used
in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference
by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help..

3
Operating Manual - Pema Protea Equipped Media Amplier
WARNING:
THIS APPARATUS MUST BE EARTHED
Table Of Contents
1 Introduction and Unpacking 4
2 Pema Amplier Models 5
21 Product Overview5
22 Installation Requirements                                    5
23 Ethernet Communications Requirements                          5
24 Front Panel Features6
25 Rear Panel Features 7
26 Amplier Protection 8
3 Proteane Control Software 8
31 Installing Software8
32 Device Options  10
33 Preset Options  10
34 Device Control Tabs  11
34a Control Surface 11
34b Security  13
34c Network Properties  13
34d DSP Controls  14
34e Input Source  16
34f Metering 16
34g Event Scheduler  16
34h Fault Log  16
4 Pema Remote Control  17
41 Remote Control Devices 17
41a WR-1 Remote Level Control                                     17
41b WR-2 Remote Preset Recall Switches                               17
41c WR-5 Programmable Remote Control (and RPS-18 Remote Power Supply)     17
41d RD-8C or RW-8C Remote Fader Level Control                         18
41e neWR-5 Ethernet Programmable Button Remote Control                 18
41f INA-1 Inline RS-232 Adapter                                    19
42 Remote Control Functions                                   19
42a Power Switch Disable 19
42b On/Off Remote Standby 19
42c Remote Preset Recall 20
42d Remote Gain Control 20
42e Remote Channel Mute  21
42f Remote Zone Input Source Selection                               21
5 Troubleshooting  22
6 Specications  25
7 Limited Warranty  27
8 Block Diagram  28

Operating Manual - Pema Protea Equipped Media Amplier
4
1. INTRODUCTION
Thank you for your purchase of this Pema series Protea Equipped Media Amplifier. This single audio solution combines
state of the art, light weight, high efficiency switching amplifier technology, integrated Ethernet control, comprehensive Protea
DSP processing and matrix mixing, provision for EtherSound or CobraNet hardware interface options, and remote control op-
tions. Please read the entire manual to fully understand the features and capabilities of this product.
Standard Pema Features:
• 8x8 DSP Matrix with 4 or 8 channel power amplifiers
• 250W/channel and 125W/channel models
• Low impedance output (direct speaker) or constant voltage models available
• CobraNet and EtherSound networked audio capabilities with add-on option card
• Eight analog inputs use +4dBu balanced Euroblock and -10dBV unbalanced summed mono RCA connectors
• Mic preamps with switchable +15V phantom power on all Mic/Line inputs
• Switchable transformer isolated -20dBu TEL-PBX 600Ω input on Channel 1
• Proteane software with comprehensive DSP tool set, matrix router/mixer, metering, event scheduler and event log
• DSP tools include auto-mixer, ambient noise compensation, feedback suppressor, autoleveler, and much more
• Balanced, post DSP analog preamp outputs for every amplifier output channel
• Compatible with Ashly NE Ethernet remote controllers, as well as Ashly serial remote controllers
• Passive remote control options include remote standby, contact closure preset recall, and remote DC level control
• Front panel attenuators and metering
• Five year warranty
About Ashly
Ashly Audio was founded in 1974 by a group of recording engineers, concert sound professionals, and electronics design-
ers. The first products were elaborate custom consoles for friends and associates, but business quickly spread to new clients and
the business grew. The philosophy we established from the very beginning holds true today: to offer only the highest quality
audio tools at an affordable cost to the professional user – ensuring reliability and long life. More than 35 years later, Ashly
remains committed to these principles.
Ashly’s exclusive Five Year, Worry- Free Warranty remains one of the most liberal policies available on any commercial-
grade product. The warranty covers every product with the Ashly brand name, and is offered at no extra cost to you, our customer.
Unpacking
As a part of our system of quality control, every Ashly product is carefully inspected before leaving the factory to ensure
flawless appearance. After unpacking, please inspect for any physical damage. Save the shipping carton and all packing ma-
terials, as they were carefully designed to reduce to a minimum the possibility of transportation damage should the unit again
require packing and shipping. In the event that damage has occurred, immediately notify your dealer so that a written claim
to cover the damages can be initiated.
The right to any claim against a public carrier can be forfeited if the carrier is not notified promptly and if the shipping carton
and packing materials are not available for inspection by the carrier. Save all packing materials until the claim has been settled.

5
Operating Manual - Pema Protea Equipped Media Amplier
2. PEMA AMPLIFIER MODELS
2.1 Product Overview
The Pema series of amplifiers are available in the following 120 VAC or 230 VAC mains configurations. Each model
can have an optional factory installed CobraNet or EtherSound network digital audio module. Constant voltage amplifiers can
include 25V, 70V, and 100V output models.
Pema4125 - Eight input, four 125W amp channels, low Z (speaker), or constant voltage (High Z) output models.
Pema8125 - Eight input, eight 125W amp channels, low Z (speaker), or constant voltage (High Z) output models.
Pema4250 - Eight input, four 250W amp channels, low Z (speaker), or constant voltage (High Z) output models.
Pema8250 - Eight input, eight 250W amp channels, low Z (speaker), or constant voltage (High Z) output models.
2.2 Installation Requirements
Each Pema model is 2RU, and weighs 22 pounds (10kg) or less. The model number, mains voltage, and power consump-
tion are indicated on the back panel beneath the AC inlet.
CAUTION: When mounting or connecting the unit, always disconnect it from the mains. Use four screws when mount-
ing the amplifier to the front rack rails. Rear support is also recommended, especially for mobile or touring use. Air flow vents
for cooling the amplifier require the front panel to have access to ambient room temperature air. Cool air is drawn in from the
front. To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. Before connecting to mains
power, make sure that the controls, software, and wiring are all set to the configuration needed for the particular application.
Failure to do so could result in damage to the unit or other components in the system. When setting up and testing the system,
please take special care to double check all connections and settings. Please refer to the specifications section of this manual for
specific input, output, Ethernet, and other amplifier properties to consider in the installation of this product.
2.3 Ethernet Communications Requirements
Ethernet communications with this Pema amplifier can be made by connecting it directly to a PC running Proteane control
software or connecting it through an Ethernet network router, switch, hub, or patch panel that is connected to that PC. Though
direct connection to a PC is possible, it limits the application to one networked device. Networks using the Cat-5, Cat-5e, and
Cat-6 standard will all work with Pema amplifiers. Maximum cable distance is 100 meters (328 ft) from the nearest router,
hub, or switch. Ashly Pema amplifiers and NE remotes will auto detect their Ethernet network connection, and adapt to either
a straight through pin to pin, or crossover Ethernet cable.
2.3a IP Address - There is no need to assign IP addresses to Pema products used with a PC or a network router. The
router or Link Local Addressing will assign IP addresses to each product automatically.
When a router is not available, most current Pema and NE products have the capability to assign their own IP address
based on Link Local Addressing. This allows the device to operate without the need to set up static IP address. If the only option
is to use an Ethernet switch instead of a router, and communications problems remain which cannot be solved with the use of
the link local standard, each Pema device must have a static IP address assigned from within Proteane software. This is done by
selecting “Manual Configuration” in the Network Properties tab of each device, where the system/network administrator must
assign each product its’ own unique static IP address, each with the appropriate sub net if applicable.

Operating Manual - Pema Protea Equipped Media Amplier
6
2.3b Firewalls - If Proteane software does not detect the Pema amplifier, the firewall in the host PC should be turned off,
as firewalls may block the Pema or NE device response to the controlling PC when network communication is attempted. The
current PC firewall status is found by clicking on the Windows Start button, then Control Panel, then double clicking on the
security shield where the firewall can then be disabled. Once communications with the device is established, the firewall can
be enabled again, but if there continues to be communications problems then disable the firewall.
2.3c Wi-Fi and LAN – For the initial device auto-configuration process, any secondary Wi-Fi connection should also
be disabled, and the LAN (Local Area Network) connection must be enabled on the PC. Secondary network connections may
confuse the auto device discovery process. Go to the Windows Control Panel, then Network Connections, to disable any second-
ary network connections. Once communications with the device is established, secondary network connections can be enabled
again, unless a communications problem remains with Pema or NE devices, in which case the secondary network connections
should remain disabled.
2.3d Connecting Device(s) - Connect the Ethernet cable from the PC or network router to the Ashly Pema or NE remote
control device. If a successful Ethernet connection has been made, a solid green LED (Link) lights up on the device Ethernet
port. If there is no green LED showing, there is either a problem with the cable or the network source, which must be addressed
before proceeding further. All RJ-45 Ethernet ports flash green when active, so backtrack through any other cables, routers, or
switches to find the problem. The flashing yellow LED (Data) indicates that data is flowing to or from the device.
2.4 Front Panel Features
1. Mounting Holes – For rack mounting.
2. Power Switch – Switches the unit on or off. Note: The power switch can be disabled from Proteane Software.
3. Status LEDs – Indicate status of: Power, Standby, Protect, Power Switch Disable, and Com activity.
4. Air Inflow Vents – Cool air enters here and is vented out through the sides.
5. Channel Controls – Channel control area.
6. Signal LEDs – The lowest LED will begin to light when the output voltage reaches -18dBu below rated output. The
Clip LEDs will begin to flash when output voltage is 1/2 volt below the output power supply voltage, or the front end is clipped.
7. Bridge – This LED indicates that the channel pair is selected to BRIDGE mode from within Proteane software, and that
only the odd input channel level control is active.
8. Temp and Current LEDs – The Temp LED indicates that the amplifier channel has reached an excessively high operat-
ing temperature and will gradually attenuate the signal to compensate. If unable to sufficiently cool the channel, the amplifier
will eventually go into protect mode. The Current LED confirms that the amplifier output is delivered to a speaker load.
9. Channel Attenuators – These control the input signal level to the amp, and can be disabled from software.
10. Factory Reset – To reset all internal configurations (including presets and passwords) back to the original factory set-
tings, press and hold this recessed front panel momentary switch during power up until all channel LEDs sequence from bottom
to top. Upon reset completion, the LEDs will turn off and the amp will be in normal operating mode.

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2.5 Rear Panel Features
1. Ethernet Port - This RJ-45 connector allows Ethernet control and monitoring of the amplifier using Proteane software.
2. Phantom Power Switch - This switch applies +15V phantom power to channel 1-4 balanced inputs. A separate switch
is used for channels 5-8.
3. TEL-PBX Switch - This switches between Mic/Line and PBX analog input for channel one only. When switched to
TEL-PBX, a 600 ohm isolation transformer is inserted into the channel one input signal path. This transformer is designed for
limited bandwidth audio from a telephone paging system.
4. Balanced Mic/Line Input - This is used for a three wire (G, +, -) balanced analog input, and uses Euroblock connec-
tors. If an unbalanced input signal is to be connected here, wire the signal to (+), the input ground to (G), and connect (-) to (G).
5. Unbalanced Summed Mono Input - This pair of RCA jacks is used for analog line level (-10dBv) input, and sums a
stereo signal together for that input. Note: Unbalanced line level sources may reference their outputs to a different ground than
the Pema amplifier, creating the potential for ground loop hum. Always use short cable lengths for unbalanced signals, routed
away from AC, video, or data cables, and make every effort to use a common grounding point for all devices. In the event there
is still ground loop hum, isolate the unbalanced input signal by using an in-line isolation transformer.
6. Digital I/O Slot – Installation of this option allows this amplifier to be part of a CobraNet or EtherSound digital audio
network.
7. Preamp Outputs - These Euroblock connectors provide access to post-DSP preamp signals for each channel, and are
used to drive other amplifiers or processors with the same signal that is driving the power amplifier. The preamp outputs are
pseudo-balanced, meaning they use single ended signal with balanced impedance, and can be wire balanced or unbalanced.
8. AUX Outputs - On four channel amplifiers only, the four AUX outputs offer additional and independent post-DSP
signals for driving other amplifiers or processors. AUX outputs are pseudo-balanced.
9. Euroblock Speaker Connectors - Used to connect the speakers or distributed line transformers, depending on model.
10. Remote Standby - These two contact closure pins are wired to a switch to remotely place the amp in standby.
11. Preset Recall - These four pins (using remote standby GND) can be wired to remote contact closure switches to recall
one of the first four amplifier stored presets. Preset recall function is defined within Proteane software.
12. Data - These four pins offer serial data control and can be wired to Ashly remote control devices such as the WR-5 or
RD-8C. Ashly also offers an in-line converter called the INA-1 that allows the Data Port to be used with other RS-232 controllers.
13. Remote Level Control - These pins can be wired to remote 10kΩ potentiometers such as the Ashly WR-1 for DC
level control of individual channels.
14. AC Inlet - Used for the detachable AC cord. Use only the Ashly Audio factory supplied AC cord.
15. Model Information - This sticker tells the model name, mains voltage, and mains power/current consumption.
WARNING: Do not remove or lift the mains connector ground.

Operating Manual - Pema Protea Equipped Media Amplier
8
2.6 Amplifier Protection
Ashly Pema amplifiers have the following protection circuits:
Over Current Protection - When the output current exceeds the amplifier's safe operating limits. This occurs in the
amplifier output stage.
Thermal Protection - When the internal temperature is below 40°C the fan runs at its slowest speed. Above 40°C the
speed is increased until it reaches its maximum value. If the temperature exceeds 100°C, the input on that channel is reduced.
If the temperature exceeds 120°C, the power supply is switched off.
Mains Protection – Protection within the power supply includes: In-rush Current Limitation during power up, Mains
Over Voltage Detection, and internal Mains Fuse Protection. To protect the Mains fuse against AC overcurrent due to excessive
audio output current, there is a protection scheme indicated on the amplifier front panel and in Proteane software which reduces
audio output level until the overcurrent condition is no longer present.
3. PROTEAne CONTROL SOFTWARE
3.1 Installing Software
Ashly Proteane software is included on a CD with each unit. Check the Ashly web site at www.ashly.com for the latest
software release. Autorun will launch the application ProteaSystemSoftwareNE to install the Proteane software.
3.1a Using Proteane Software
Once the software has been installed on the computer and Ethernet connections have been made successfully, launch
the software. All Ashly Pema and NE devices installed on the network will be automatically detected and shown in the active
device listing “device tree” on the left side of the Proteane software startup window. The device tree is an accurate reflection of
all Ashly devices currently installed on available networks, also including any devices which have been formerly installed but
are now off-line.
Device icons can be dragged onto the project canvas from the menu tree, or placed as virtual devices in “Design Mode”.
In other words, a device icon on the canvas is not necessarily a live product. It may be a virtual device, or a device that is cur-
rently off-line. In the device tree, all currently connected and active devices are highlighted in green. Ashly devices which have
Proteane Software Main Menu, Menu Tree, and Project Canvas

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Operating Manual - Pema Protea Equipped Media Amplier
been formerly installed but are currently off-line or unavailable are highlighted in red. Individual devices can be dragged onto
the project canvas to simulate physical rack installation groups. Editing each device can be done from either the device tree or
from representative icons on the canvas. All changes made in software are executed in real time on the device.
The software scans for active devices on start-up. The user can manually scan at any time as well with <Scan For Devices>
at the bottom of the network device tree. All devices broadcast their availability to the software when they start up.
In addition to detecting which models are currently online, any factory installed options within each amplifier are detected.
In the case of Pema amplifiers, EtherSound or CobraNet are the only options available. The software control surface for each
device automatically displays available controls for installed options. Note: The user can find and verify a single physical
device on the network by right clicking over the unit’s name in the drop down menu or picture on the canvas, and then click
<Identify>, which will flash the Com LED on that unit’s face panel for two seconds.
The project canvas is used to visually represent and control a fixed physical sound system installation, and can display
any of the networked Ashly processors, amplifiers, and remotes used in that system. The user can also place an assortment of
isolated control objects such as level faders, single LEDs, meter bars, etc, and map them to specific product functions within
that project. Once a control object is placed using <Add Items>, right click on the control object to bring up its properties.
Lines, rectangles, text, even image files can be added to create a custom virtual control screen along with individual devices and
control objects and be saved in the project. To see all available canvas tools, right click anywhere over open canvas. Check-
ing <Design Mode> allows placed objects to be moved around, while unchecking <Design Mode> locks all objects in place.
Once Proteane software is installed and the targeted devices have been identified on the network, a new project can be cre-
ated. A project represents the physical hardware installation and all device settings, Individual device properties are accessed
in the device control window (shown below) by double clicking on the specific Pema device, either in the menu tree to the left
of the project canvas, or the project canvas device icon
Pema 8250 Main Device Control Window

Operating Manual - Pema Protea Equipped Media Amplier
10
3.2 Device Options
1) Flash Reprogram Mode - The amplifier firmware can be updated
by downloading a new firmware file to the amplifier over the network. Latest
firmware updates, if available, can be found on the Ashly website. When
the amplifier is put into flash reprogram mode, the power and standby LEDs
both turn on and all audio function is suspended until flash reprogram is
completed. Note that Flash Reprogram only appears in the device options
menu when a live Pema device is connected.
2) Link Group Configuration - Link groups allow the controls for
multiple signal processing functions to track each other across channels or
even across devices. For example - if two different channels or even different
device graphic equalizer blocks are linked, any change made to a control
within either of the equalizers will result in an identical change to the other.
In other words, DSP blocks may be linked within a single device, or across
multiple devices (assuming all devices share the network).
Each device will support up to 16 Link Groups. DSP function blocks may be assigned to these groups in software. Once
assigned to a group, all LIKE functions within DSP blocks assigned to a group will track DSP parameter changes. Note that more
than one type of DSP function block can be assigned to the same link group. Each link group may be assigned a name by the
user, and also be assigned a color for easy identification. For further details about linking, see the online help in Proteane software.
3) Power On Delay - Use this feature to delay the amplifier turning on after power is provided, as well as after the ampli-
fier is turned on from standby mode. Delay is measured in mS, with the limit at 655,350 mS, or about 11 minutes. The power
amplifier should always be the last device to power up, after other system components have turned on and stabilized. Note that
the amplifier must first be on for this change to take effect.
4) Sample Rate and Master Clock Source Selection - Changes to both of these settings can be made by clicking the
<Show Advanced Control> box in this menu item. Sample rate can be set to either 48kHz or 96kHz. Note that at 96kHz, the DSP
usage doubles, resulting in half the available processing power for filters, delay, limiting, etc. Also note that the Feedback Sup-
pressor cannot be used at 96kHz sample rate. Factory default settings are Auto Selection for clock source and 48kHz sample rate.
5) DVCA Control - This feature is used in conjunction with the
DSP tab gain tool called <Gain w/VCA>. Use this feature to create up
to four gain subgroups as you would on a mixing console. Any input
or output channel can be added to one or more VCA subgroups for
group gain control. While no external hardware control is allowed for
this subgroup, a level fader control object can be added to the project
canvas and linked to this named VCA level control.
6) DSP Enable/Disable - This removes from operation the input,
output, or matrix mixer DSP functions on any channel. When removed,
audio is passed directly through the stage that has been disabled.
3.3 Preset Options
1) Preset Options - The Preset Options menu in the main device
window allows setups to be named, saved to, and recalled from the
amplifier device as well as a computer on the network. Presets are a
snapshot of all current settings on a given device.
This device will store up to 31 named internal presets, each
preset storing control data for all channels and audio functions. Preset
names must be 20 characters or less. While working in Proteane soft-
ware, changes to an individual preset can be saved to the device using
<Save Preset To Protea>, or saved to the PC using <Save To Disk>.
Individual preset files use the extension (*.pne).
Pema Device Options
Pema Preset Options

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Operating Manual - Pema Protea Equipped Media Amplier
2) Sub Presets: Instead of saving or recalling an entire preset affecting all device functions, a sub-preset affecting only
a user defined sub-set of DSP functions can be created. To create a sub-preset, first check the box labeled <Selected for sub-
presets> in any and all DSP control blocks to be associated with this sub preset, then under the preset options menu click <Save
Sub Preset to Disk> or <Save Sub Preset to Protea>.
A preset or sub preset can be loaded to the Pema amplifier by one of the following methods:
1) Use Proteane software on a PC connected to the network to recall files saved on either the PC or on the device.
2) Use contact closures to load presets 1-4 from memory by wiring switches to the rear panel contact closure connector.
3) Use an Ashly WR-5 or neWR-5 remote control.
4) Use the event scheduler
Note: A full preset recall event will overwrite any unsaved changes, so be sure the current configuration is saved before
continuing or it will be lost. The device always loads the last working settings on power-up, so as to preserve any changes should
the power be inadvertently turned off prior to saving a preset. Caution: A new preset may have dramatically different settings
capable of damaging sound system components, so be careful not to recall the wrong preset while the system is on.
3.4 Device Control Tabs
The following device control tabs are available for each Pema device. The tabs include Control Surface, Security, Net-
work Properties, DSP, Input Source, Meters, Meter Dynamics, Meters AutoLeveler, Metering, Event Scheduler, and Fault Log.
3.4a Control Surface
This is the main user interface for the amplifier section
of Pema amplifier. DSP and mixing functions are managed
from within the DSP tab. The following amplifier functions
are available for monitoring or changing in the control panel:
Name - The user defined name for this specific ampli-
fier. Up to 20 characters can be used.
Model - The model of amplifier being addressed on
the network
Power - Shows power status as On, Off, or Standby
Power On/Standby - Shows power status, and allows user to set power to standby to use less power. Power standby can
also be automatically controlled by the event scheduler.
Power Switch Enable/Disable - Disables the front panel power switch
Remote Attenuator Enable/Disable - Disables "Remote Level Control" Euroblock connections on back panel
Front Panel Attenuator Enable/Disable - Disables amplifier front panel attenuator controls. Note: The software at-
tenuators will still reflect the physical position of the amplifier's front panel attenuators, even when they are disabled and not
attenuating the signal.
Pema Device Control Tabs
Pema Control Surface Global Functions

Operating Manual - Pema Protea Equipped Media Amplier
12
Channel Thermal - This software LED indicator becomes lit when the channel is operating at an excessive and unsus-
tainable temperature.
Channel Protect - This becomes lit when any amplifier channel is switched into protect mode, meaning one or more fault
conditions are occurring. Fault conditions include overvoltage, overcurrent, and overtemperature.
Fuse Protect - This means that the amplifier has automatically attenuated the signal in order to prevent an internal non-
user-serviceable fuse from blowing.
Rail Fault - This means that the output power supply has encountered a rail overvoltage fault.
Supply Fault - This means there is a general power supply fault. Fault conditions include fuse protect, overtemperature,
and overcurrent.
Stereo/Bridged selection - The drop-down selection box above each pair of adjacent
channels assigns stereo or bridge mode for that pair. In bridge mode, input signal is auto-
matically taken from the odd channel input and inverted, then sent to the even channel. The
even channel controls become disabled. Note that in bridge mode, the even channel software
attenuators will still reflect the physical position of the amplifier's front panel attenuators,
even though they are removed from control of bridged signal.
Channel Name - This user defined text box names the amplifier output channel. Up
to 20 characters can be used.
Clip/Mute LED - This LED shows when the amplifier output is either muted or clip-
ping. Clipping is indicated when the output level is 1/2 Volt below the output power supply
rails, and accurately tracks AC line voltage sags. All outputs become muted when the unit
is put in standby mode. This LED always shows the same status as the amplifier front panel
clip/mute LED.
Mute Button - This button mutes the output channel. Output mute can be controlled
by the event scheduler.
Polarity Button - This button inverts the polarity of the output channel signal.
Main Output Channel Fader - This controls the output attenuation. Output attenu-
ation below -40dB mutes the output.
Input Meter - This indicates the signal level in dBu as in arrives at the amplifier section.
Output Meter - This indicates the amplifier output level in dB below full rated output.
Protect LED - This individual channel protect LED indicates an overvoltage, overcur-
rent, or overtemperature fault.
Current Meter - This shows that the amplifier is delivering current to a load, and is
useful to determine if a speaker load is open or shorted.
Temperature Meter - This meter and temperature box show the current operating
temperature of the output devices. Excess of 100°C will trigger overtemperature protec-
tion.
Offset Link Group and Offset Faders - A group of output channels can be linked together to attenuate the group as a
whole without changing the relative levels of each channel. If a channel is assigned to one of the 16 offset link groups, a colored
triangular marker appears on the left side of the main fader graticule for secondary level control of all channels in that group.
Left click and drag this marker up or down to adjust the link group level. The main level control faders can not be linked to a
group. Note that more than 40dB of cumulative channel attenuation causes the channel to mute.
In addition to the control surface offset link group attenuator control (not the main fader), most DSP functions have a link
group check box in their work window to assign a specific DSP parameter to one of 16 link groups if desired. Link groups can
be renamed by clicking on any group name and entering the new name then pressing <enter> on the keyboard.
Pema Control Surface
Channel Functions

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Operating Manual - Pema Protea Equipped Media Amplier
Attenuators - These two dials indicate the physi-
cal position of hardware level controls on either the amp
front panel or the remote DC level control (if present).
Note that these will display the position of attenuators
even when disabled in software.
Total Attenuation - This indicates the total amount
of attenuation being applied to the channel in dB. This is
the sum of the following attenuators: main fader, offset
link group attenuation, front panel and remote attenua-
tors (if enabled).
Note: The maximum dynamic range of the ampli-
fier is only achieved when the amplifier’s attenuators
are set to the optimal value. The amplifier’s cumulative
attenuators (as listed in the above paragraph) are located
in the signal path after all DSP processing but before the
power amplifier section. The optimal setting is deter-
mined by the maximum input signal of +20 dBu (with the
attenuators set far down), minus the input sensitivity of
+6.2 dBu (with the attenuators set at 0 dB). This equates
to approximately 14 dB of attenuation. The amplifier’s
specified dynamic range is measured with the attenuators
set to this optimal setting of 14 dB
3.4b Security Tab
Password protected user access is set up in the
security tab. User names and password are stored
within the Pema amplifier. User access is defined
by the primary user (admin or default). Available
security levels are: View only, DSP Output Channels
Access, DSP Input Channels Access, Preset Recall
Access, Audio Parameter Access, Audio Only Ac-
cess, IP only Access, and Full Access.
3.4c Network Properties Tab
In this tab, device information includes device
type, MAC address, and network connect status.
Device network configuration can be set to auto-
matic DHCP (recommended) or Manual Static IP.
Advanced Network Configuration allows the user to
bypass corporate firewalls and assign a specific port
to PEMA for remote setup and monitoring.
The user can visually identify the amplifier on
a network by clicking the "Identify Device" button,
which lights the COM LED on the amplifier's front
panel for two seconds. The amplifier's firmware
revision is shown in the hardware configuration
section as well. From time to time Ashly may post
updated firmware on our website which can be
downloaded and then flash reprogrammed to the
amplifier. Flash reprogram is found in the device
options menu when connected to a live Pema device.
Pema Security
Pema Network Properties

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14
3.4d DSP Control Tab
The DSP tab includes an input side and an output side, with a cross linking matrix mixer in between. Key features of the
DSP window include:
Input Channel Number - Right click on this to bring up Clear, Copy/Paste, Link, and Sub Preset functions for that input
channel.
Input Channel Name - The user can name each input channel.
Input Mute Button - Mutes the input.
Pluggable DSP Tools - Six processing blocks are available on both inputs and outputs for custom configuration of plug-
gable DSP processing blocks. Total DSP usage for the four input and output channels is indicated as a percentage at the bottom
of each input section in the DSP tab. Increasing the number and complexity of applied DSP tools increases the DSP usage.
Note: The total DSP usage per group of four channels is limited, and cannot exceed 100%. Available DSP tools include:
1) Dynamics controls - Brick Wall Limiter, Compressor, Autoleveler, Ducker, and Noise Gate.
Ambient Noise Compensation is available on outputs only.
2) Gain functions - Gain, Gain with VCA, RD-8C Remote Control Gain, neWR-5 Remote Control Gain
3) Equalization - Graphic Equalizer, 10/6/4/2 Band Parametric Equalizers, Feedback Suppressor
4) Crossover functions - Four Way, Three Way, and Two Way Crossovers are available on outputs only.
HPF and LPF filters are available on both inputs and outputs.
Pema DSP Control Tab

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5) Delay - Speaker Delay at 48kHz sampling rate is ≤21mS, and Delay is ≤682mS. At 96kHz, ≤10mS and ≤341ms.
6) Metering - -60dBu to +20dBu display
7) Signal Generator - Pink noise, White Noise, Sine Wave
Extensive online help information is available for all DSP blocks within the software. From within any DSP tool, simply
press <F1> on the keyboard for online help for that tool. Also look in the Proteane Software Help Menu/Contents and Index/
Contents/Protea NE Products/PE Multichannel Amplifiers/DSP Control for details of all DSP functions.
Input/Output Matrix Router - Any input can be routed to any or all outputs. Click and drag from the input to output to
assign routing. For faster routing of a single input or output to multiple channels, highlight its node and then press Ctrl+Click
over the desired nodes to connect to. To delete a route or clear the matrix, right click on the routing line or node. Also, right
click anywhere in the matrix area to bring up a menu of common routing choices.
Output Matrix Mixer and Auto Mixer - For a given amplifier output, all inputs that have been routed to that channel in
the matrix router are mixed together here.
This is also where individual channels can be selected as part of an automix group. The automixer function is a “gain-
sharing” type automixer which automatically makes smooth gain transitions on all selected automixer input channels to achieve
a constant total system gain. It is designed primarily to automate the mixing of multiple speech microphones to follow the
dynamic nature of the speech dialog and attenuate idle microphones. The automixer may also be used in conjunction with the
Autoleveler, Compressor or Gate on the input signal paths for more advanced control of varied input signal levels produced by
different talkers. A Feedback Suppressor function may also be used on the inputs to further help control feedback problems.
For a full description of automixer features and setup, read the online help by pressing F1 when in the output mixer window.
Output Mute Button - Mutes the output.
Output Channel Name - The user can name each output channel.
Output Channel Number - Right click on this to bring up Clear, Copy, Link, and Sub Preset functions for that output
channel.
Pema DSP Output Channel Matrix Mixer and Automixer

Operating Manual - Pema Protea Equipped Media Amplier
16
3.4e Input Source Tab
Inputs are analog balanced mic/line, summed analog mono unbal-
anced RCA connectors, or digital audio input (optional). Analog mic/
line preamp gain of 0dB, +20dB, +40dB, or +60dB is selected in this
window by clicking on the <PRE> icon. Setting the input source to
Auto gives priority to digital audio inputs if they are installed.
3.4f Metering Tabs (not shown)
There are three meter tabs, including general I/O Meters, Meter Dynamics for gate and compressor/limiter functions, and
Autoleveler Meters. All meter tabs display both DSP input and DSP output level for each channel.
3.4g Event Scheduler Tab
The Events tab allows the user to
program specific device actions to occur
based on the time of day or day of the
week. Scheduled events can include Pre-
set Recall, Power Status Change, Channel
Mute, Output Source Select, and certain
remote control settings. Up to 100 events
can be scheduled. The Pema date and time
can be manually set by the user or linked
to the host PC. All event schedule data is
stored on the amplifier.
A common use of the event sched-
uler would be for programmable energy
efficiency. Schedule the Pema to go idle
or off during down times, and turn back
on when the facility opens for business.
3.4h Fault Log Tab (not
shown)
The Fault Log is a register of amplifier events triggered by fault conditions and date/time changes . It is useful for diag-
nosing an amplifier/system problem by allowing the administrator to review events which may have led to a fault condition.
The log can be saved as a XML text file.
Pema DSP Input Source Tab
Pema Event Scheduler

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4. PEMA REMOTE CONTROL
The following hardware devices are currently available for remote control of Pema amplifier functions. Some devices
control only one function, while others can control several different functions. Some remote control functions are also con-
trolled by software. A complete listing of all Pema amplifier functions which can be remotely controlled, along with a listing
of respective control devices for each function, is found following the hardware descriptions listed here:
4.1 Remote Control Devices
4.1a WR-1 Remote Level Control - The WR-1 is a dual potentiometer remote volume control designed to fit in a stan-
dard wall electrical box, and is wired to the amplifier back panel Euroblock connector labeled “Remote Level Control” using
four conductor wire. If wiring a custom potentiometer assembly other than the WR-1, connect +5V from the Remote Level
Control Euroblock connector to the potentiometer's CW pin, GND to the CCW pin, and the channel under control to the wiper.
Do not connect the WR-1 remote level control ground to any other external grounds.
4.1b WR-2 Remote Preset Recall Switches - The WR-2
allows selection of one of four presets via interlocking push-
button switches. Each pushbutton switch can be connected to
a Preset Recall Pin on the back panel of the controlled Pema
amplifier. The terminal numbers correspond to the first 4 Preset
Memory locations in the controlled amplifier. Pressing a button
will select the corresponding preset. Windows are provided for
a user-generated label.
4.1c WR-5 Programmable Remote Control - See illus-
tration on next page. The WR-5 is a programmable button remote
control which mounts into a standard North America electrical
wall box and connects to a Pema amplifier data port using four
conductor wire. Maximum cable length is 1000 ft using #24
gauge twisted pair. A decora cover plate (not included) can be
purchased at hardware stores to cover the WR-5 electrical box
and satisfy the aesthetic needs of the installation. The WR-5 is
phantom powered from the amplifier. Up to four different WR-5
remotes can be wired in series and phantom powered from a
Pema amplifier, and more can be added by using an Ashly RPS-
18 remote power supply.
WR-1 Assembly WR-1 Wiring
WR-2 Wiring

Operating Manual - Pema Protea Equipped Media Amplier
18
(WR-5 continued)
WR-5 buttons are
programmed from Proteane
software after the WR-5 is
wired to a Pema amplifier
and assigned a unique ID
number in its WR-5 device
window. Each button has
a status LED. Controlled
functions include preset
recall/scroll, mute, zone
source selection, individual
channel and matrix point
level control. A windowed
mylar pocket is available
to insert custom function
button labels.
The Ashly RPS-18
remote power supply is
required when more than four WR-5 remotes are connected to one Pema amplifier.
4.1d RD-8C or RW-8C - The RD-8C and RW-8C are
remote level controllers which are connected to the Pema ampli-
fier's Data Port, and are phantom powered from the amplifier.
Maximum cable length is 1000 ft using #24 gauge twisted pair.
The RD-8C is a desktop controller, while the RW-8C is electroni-
cally the same but mounts as a wall plate using a standard North
American 4-gang electrical box and connects using a Euroblock..
There are eight channels and a master, each with a fader control
and an on/off button. Note: Only one RD-8C can be used per
amplifier, and use of an RD-8C will exclude the use of the data
port for a WR-5. One or the other remote control device may be
connected, but not both.
4.1e neWR-5 - See neWR-5 illustration on following page.
The neWR-5 remote control is a networked version of the WR-5,
using Ethernet instead of the Data Port to communicate with the
Pema amplifier. Connecting and powering the neWR-5 is done
using Cat-5 Ethernet cable and an IEEE 802.3af Power over
Ethernet (PoE) switch, hub, or in-line PoE injector. If PoE is
unavailable, the Ashly RPS-18 (sold separately) is a 15-48VDC
power supply capable of at least 2 watts per neWR-5 and can be
hard wired to the back of the neWR-5. PoE current draw is 38mA @48VDC and 80mA@15VDC. A decora cover plate (not
included) can be purchased at hardware stores to cover the neWR-5 electrical box and satisfy the aesthetic needs of the installation.
The neWR-5 appears in the Proteane software device menu tree and must be assigned, within its neWR-5 device window,
to a specific Pema amplifier under control. The neWR-5 has six programmable function buttons which can light up green, red,
or amber to display status. Further information on LED status is found in the neWR-5 owner's manual. To the right of the
function buttons is a pocket in the mylar overlay for a printed function label to be inserted. The two other buttons are used to
adjust function parameters such as gain or preset number, and are indicated by the LED display.
There is also a hard-wired Lock-Out feature on the neWR-5, where the closing of a switch wired to the lockout Euroblock
renders all buttons inactive.
4.1f INA-1 Inline RS-232 Adapter - The Pema amplifier Data Port uses a proprietary serial communications protocol
which can be converted to RS-232 using the Ashly INA-1 RS-232 adapter. This allows the use of custom designed third party
RS-232 controllers.
WR-5 Wiring
RD-8C or RW-8C-5 Wiring

19
Operating Manual - Pema Protea Equipped Media Amplier
4.2 Remote Control Functions:
The following functions within the Pema amplifier can be remotely controlled. A listing of the devices by which each
function can be controlled is shown below and explained in the following paragraphs:
Pema Function Control Device(s)
• Power Switch Disable Proteane Software
• On/Off Remote Standby Contact Closure, Proteane Software, Event Scheduler
• Remote Preset Recall Proteane Software, Contact Closure, WR-2, WR-5,
neWR-5, Event Scheduler,
• Remote Gain Control WR-1 DC Level Control, WR-5, neWR-5,
RD-8C, Event Scheduler, Proteane Software
• Remote Channel Mute WR-5, neWR-5, Event Scheduler, Proteane Software
• Remote Zone Source Selection WR-5, neWR-5, Event Scheduler
4.2a Power Switch Disable
When the power switch is turned off the amplifier is completely off, UNLESS the power switch has been disabled from
within Proteane software (Control Surface Tab), in which case the power switch on the amplifier has no effect at all. If the power
switch has been disabled from software, the Pema amplifier front panel DISABLE LED will be lit. Even if the AC power is
removed, the amplifier’s internal memory will maintain the <power switch disabled> status until changed again from Proteane
software. Performing a factory reset will clear and restore all internal amplifier memory to factory settings.
4.2b On/Off/Remote Standby
Pema amplifiers have three possible power states, OFF, ON, and STANDBY, each with a status LED on the front panel.
Control for these states is managed by the following:
1) Remote Standby Contact Closure - When the two Euroblock pins labeled "Remote Standby"on the back of the am-
plifier are wired to a switch and connected, the amplifier goes into Standby mode, whereby the amplifier is active but not fully
powered up. For remote standby to work, the power switch must be turned on OR be disabled through Proteane software. Open
the switch to remove the amp from remote standby mode.
neWR-5 Networked Programmable Remote Control

Operating Manual - Pema Protea Equipped Media Amplier
20
2) Proteane Software On/Standby - On/Standby in the Pema amplifier
software functions the same as the hardware based remote standby contact closure
on the back panel. Clicking on Standby in the Pema amplifier software control
surface places the unit into standby mode until further action is taken to bring the
amp out of standby. The software standby control does not override the Remote
Standby contact closure control, they both remain active at all times. See Control
Surface Tab descriptions on page 11.
3) Event Scheduler - Proteane software offers an event scheduler for several
key Pema amplifier functions including placing the unit into standby mode. With
the event scheduler, the installer can assign one or more times of day or days of
the week for the amplifier to automatically go into and come out of standby mode,
disabling overall function and conserving power during those times when the amplifier
is not being used. See the Event Scheduler Tab description on page 16.
4.2c Remote Preset Recall
A preset file is created when the user has made all required software settings, DSP processing settings, source
selection, signal routing, mixing, etc, for a given application using this device. A preset is essentially a snapshot of all
current settings on a given amplifier. This Pema amplifier can internally store up to 31 named presets, each preset stor-
ing control data for all channels and audio functions. Individual preset files stored on a PC use the extension (*.pmc).
While working in Proteane software, changes to an individual preset can be saved to the amplifier using <Preset Op-
tions/Save Preset To Protea>, or saved to the PC using <Preset Options/Save To Disk>. Sub Presets (collections of
DSP parameters individually selected from software) are saved in a similar fashion.
Presets can be recalled to the Pema amplifier using the following methods:
1) Proteane Software - Use a direct or network Ethernet connection from the amplifier to a PC using Proteane
software. Click (Preset Options >Recall From Disk/Recall From Protea) to load a stored preset into the amplifier.
2) Contact Closure - The four contact closure connections on the amplifier back panel allow for amplifier presets
#1-4 (presets already saved and stored in the amplifier memory) to be loaded into the Pema amplifier at the instant a
remote switch connected to one of pins 1-4 is connected to its ground pin.
3) WR-5 - A WR-5 will appear in software as a captive device to its host amplifier. The six buttons on the WR-5
can be programmed to recall a specific amplifier preset, or scroll through a defined list of presets.
4) neWR-5 - A neWR-5 will appear in the software menu tree as a device on the network, and must be assigned
to the Pema amplifier under control. Like the WR-5, the six buttons on the neWR-5 can be programmed to recall a
specific amplifier preset, or scroll through a defined list of presets.
5) Event Scheduler - Proteane software offers an event scheduler for several key Pema amplifier functions
including preset recall. With the event scheduler, the installer can assign one or more times of day or days of the week
for the Pema amplifier to automatically recall and load a new preset.
Caution: A new preset may have dramatically different settings capable of damaging sound system components,
so be careful not to recall the wrong preset while the system is on.
4.2d Remote Gain Control
1) WR-1 DC Level Control - The WR-1 remote potentiometer functions as if it were a front panel attenuator
but in a remote location. Attenuation from a remote DC level control attenuator is cumulative with all other attenuation
for a given channel, including the front panel level control.
2) WR-5 - The WR-5 can be programmed to select single or multiple input or output channels for remote gain
control function. After programming one of the six buttons for gain control, then pressing that button, pressing the
WR-5 up/down buttons will adjust the gain for all selected channels associated with that button. A gain range can also
Remote Standby
Contact Closure Wiring