Camco iD4 User manual

USER MANUAL
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iD4 USER MANUAL
TDA302USERGBC
Revision C, 2013-10-01
Please visit our website www.camcoaudio.com for the latest version of this user manual. Please note that the leading version of CAMCO manuals is always the English one.
© Copyright 2013 by CAMCO Produktions- und Vertriebs-GmbH
für Beschallungs- und Beleuchtungsanlagen
Fischpicke 5, D-57482 Wenden, Germany
Telephone [phone]
INFORMATION FOR USE iD4
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IMPORTANT SAFETY INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
1. General
The amplifier may only be used in accordance with the information pro-
vided in the user manual. Before and during the usage of the amplifier
please ensure that all recommendations, especially the safety recommen-
dations as detailed in the user manual, are adhered to.
The iD4 amplifier is designed for the amplification of pulsed audio sig-
nals. The amplifier should only be connected to speakers with an average
impedance as indicated.
2. User Manual
Read the information for use (user manual) and heed all warnings. Keep
this user manual in a safe place during the lifetime of the amplifier. The
user manual forms an integral part of the amplifier. Reselling the amplifier
is only possible if the user manual is available. In case of reselling the
amplifier, the reseller has to document any changes made to the amplifier
in writing and pass the documentation on to the buyer.
3. Environments
Use this amplifier only in E1, E2, E3, or E4 environments according to
EN55103-2 “Electromagnetic compatibility – Product family standard for
audio, video, and audio-visual and entertainment lighting control appara-
tus for professional use – Part 2: Immunity”.
4. Mounting / Placement
Do not place this amplifier on an unstable cart, stand,
tripod, bracket, or table. The amplifier may fall caus-
ing serious injury and serious damage to the prod-
uct. Any mounting of the amplifier should follow the
manufacturer´s instructions. Only mounting acces-
sory shall be used which is recommended by the
manufacturer.
5. Power Cord Protection
Power supply cords should be routed so that they are not likely to be
walked on or pinched by items placed upon them or against them, paying
particular attention to cords and plugs and the point where they exit from
the amplifier. The disconnection device from mains (mains plug or external
all-pole circuit breaker) shall remain readily operable and freely accessible
at all times.
6. Heat
Do not use this amplifier near any heat sources such as radiators, heat
registers, stoves, or other apparatuses that produce heat.
7. Water and Moisture
Do not expose this device to rain or moisture. Do not use this amplifier
near water (for example swimming pools and fountains). Do not place any
objects containing liquids, such as bottles or glasses, on the top of the
unit. Do not splash liquids on the unit. IP-20 equipment. There is no protec-
tion against splashing water.
8. Ventilation
Slots and openings in the cabinet are provided for ventilation to ensure
reliable operation of the amplifier and to protect it from overheating. These
openings must not be blocked or covered. This amplifier should not be
installed unless proper ventilation is provided or manufacturer’s instruc-
tions have been adhered to.
9. Interference of External Objects and/or Liquids with the Appliance
Never push objects of any kind into this amplifier through openings as they
may touch dangerous voltage points or short-out parts that could result in
fire or electric shock. Never spill liquid of any kind on the amplifier.

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IMPORTANT SAFETY INSTRUCTIONS
10. Connections
When you connect the amplifier to other equipment, turn off the power and
unplug all of the equipment from the supply source. Failure to do so may
cause an electric shock and serious personal injury. Read the user manual
of the other equipment carefully and follow the instructions when making
the connections.
11. Lightning
For additional protection of this amplifier during lightning storms or when
it is left unattended and/or unused for long periods of time, unplug it from
the wall outlet. This will prevent damage to the amplifier due to lightning
and power line surges. Disconnection from the mains power supply can
only be achieved by removing the plug from the mains socket and by
external disconnecting all poles from the mains.
12. Damages that require service
Unplug this amplifier from the mains supply and refer to your dealer/dis-
tributor or other authorized repair workshop if any of the following situa-
tions occur:
if liquid has been spilled or objects have fallen into the amplifier
if the amplifier has been exposed to rain or moisture
if the amplifier has been dropped or damaged in any other way
if the power supply cord or plug has been damaged
when the amplifier exhibits a distinct change from its normal function
or performance
in case the amplifier has been used in a dusty environment for quite
a period of time
13. Servicing
All service and repair work must be carried out by a dealer/distributor
authorized by CAMCO. Do not attempt to service this amplifier yourself.
As opening or removing covers may expose you to dangerous voltage or
other hazards, the amplifier may only be opened by qualified personnel.
Please refer to your dealer / distributor.
14. Spare parts
When spare parts are required, please ensure that the dealer/ distribu-
tor only uses spare parts specified by the manufacturer. The use of
unauthorized spare parts may result in injury and/ or damage through fire
or electric shock or other electricity-related hazards.
15. Safety check
Upon completion of any service or repairs to this product, ask the
dealer / distributor to perform safety checks to determine that the amplifier
works properly.
Recommendations on how to carry out the safety test can be found in
DIN VDE 0701-1 “Maintenance, Modification and Test of Electronic Appli-
ances“.
16. Cleaning
Unplug this amplifier from the wall outlet before cleaning. Do not use liquid
or aerosol cleaners. Clean only with dry cloth.
17. Packaging and shipping
When shipping the iD4 amplifier, always use the original shipping carton
and packing materials. For maximum protection repack the unit as it was
originally packed at the factory.
18. Altitude (for China only)
The amplifier shall only be operated at altitudes below or
equal 2000 m.
19. Non-tropics (for China only)
The amplifier shall only be operated in non tropic areas.

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EXPLANATION OF SYMBOLS
CAUTION – RISK OF ELECTRIC SHOCK – DO NOT OPEN.
WARNING – TO PREVENT FIRE OR SHOCK HAZARD, DO NOT
EXPOSE THIS AMPLIFIER TO RAIN OR MOISTURE.
CAUTION – HIGH VOLTAGE HAZARDS
EXIST WITHIN THIS PRODUCT.
REFER ALL SERVICING TO
AUTHORIZED PERSONNEL.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
THE LIGHTNING FLASH WITH ARROW HEAD SYMBOL ALERTS
THE USER TO DANGEROUSLY HIGH VOLTAGE AT THE OUTPUT
CONNECTORS! THAT COULD POTENTIALLY BE LIFE THREATENING.
THE LIGHTNING FLASH WITH ARROW HEAD SYMBOL IS INTENDED TO
ALERT THE USER TO THE PRESENCE OF UNINSULATED DANGEROUS
VOLTAGE WITHIN THE PRODUCT’S ENCLOSURE.
THE EXCLAMATION MARK IS INTENDED TO ALERT THE USER
TO IMPORTANT INSTRUCTIONS ALSO FOR MAINTENANCE IN THE
LITERATURE ACCOMPANYING THE AMPLIFIER.
THE AMPLIFIER MAY ONLY BE CONNECTED
TO A SOCKET WITH A PROTECTIVE EARTH CONDUCTOR.
EXPLANATION OF SYMBOLS

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EC DECLARATION OF CONFORMITY
EC DECLARATION OF COMFORMITY
EC Declaration of Conformity in accordance to EC Directives:
Electromagnetic compatibility (Council Directive 2004/108/EC);
low-voltage electrical equipment (Council Directive 2006/95/EC)
Manufacturer´s Name:
CAMCO Produktions- und Vertriebs-GmbH
für Beschallungs- und Beleuchtungsanlagen
Manufacturer´s Address:
Fischpicke 5, D-57482 Wenden, Germany
Declares that the product with the model name:
CAMCO Power amplifier iD4
Conforms to the following standards:
EN60065 Safety
EN55103-1 Emission
EN55103-2 Immunity
The operating conditions and application environments presupposed in
the information for use (user manual) are to be kept accordingly.
Wenden, 17.06.2013
Joachim Stöcker

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CONTENTS
Important Safety Instructions P. 2
Explanation of Symbols P. 4
EC Declaration of Comformity P.5
1. Welcome to CAMCO P.7
1.1 Unpacking P.7
2. The Amplifier P.8
2.1 iD4 – The Front P.9
2.2 iD4 – The Rear P.9
3. Installation P.10
3.1 Mains Supply P. 10
3.2 On / Off Switch P.10
3.3 Mounting P.11
3.4 Cooling P.11
3.5 Signal Inputs P.12
3.5.1 Analog Input P.12
3.5.2 AES Input P.12
3.6 Remote Control / Network Input P.12
3.7 Power Outputs P.12
3.7.1 SPEAKON®Connection P.12
3.7.2 Dual Channel Operation P. 1 3
3.7.3 Mono Bridge Operation P. 1 3
4. Operation P.14
4.1 User Interface Elements P. 14
4.1.1 Signal- / Protect-LEDs (multifunctional) P.14
4.1.2 Clip-LEDs (multifunctional) P.14
4.1.3 CHANNEL Buttons P.14
4.1.4 ITEM Buttons P.14
4.1.5 MENU Buttons P. 15
4.1.6 Rotary Encoder with Push Button P.15
4.2 Hot Key Functions – Standby P.15
4.3 Standby Function P.15
4.4 Power Amp Protection Systems P.16
4.4.1 Clip Limiter / Underimpedance Limiter P.16
4.4.2 SOA Protection P.16
4.4.3 DC Protection P.16
4.4.4 Over Current Protection P.16
4.4.5 Thermal Protection P.16
4.5 Mains Protections P.16
4.5.1 Inrush Current Limitation P.16
4.5.2 Mains Over Voltage Detection P.16
4.5.3 Mains Surge Overvoltage Protection P.16
4.5.4 Mains Failure Detection P.16
4.5.5 Fuse Protection P. 1 7
4.6 Main SMPS Protections P. 1 7
4.6.1 Over Current Protection P. 1 7
4.7 Fans P. 1 7
4.8 Filter Cleaning P.18
5. Troubleshooting P. 1 9
5.1 Problem: No reaction when switching the amplifier on P. 1 9
5.2 Problem: No sound P. 1 9
5.3 Problem: Error message: “Error – amp switched off” P. 1 9
6. Specification P.20
7. Typical Performance Diagrams P. 2 3
8. Unit Conversion Equations and Lookup Table P.26
8.1 Unit Conversion Equations P.26
8.2 Lookup Table P.26
9. Warranty Information P. 2 7
9.1 Summary of Warranty P. 2 7
9.2 Items Excluded from This Warranty P. 2 7
9.3 What CAMCO Will Do P. 2 7
9.4 How to Obtain Warranty Service P. 2 7
9.5 CAMCO Product Improvement P. 2 7
10. Service Information P.28
11. Maintenance Information P. 2 9
12. Decommissioning P. 2 9
13. Company Information P.3 0
14. Changes Made to The Amplifier / Notices P.3 1

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1 WELCOME
1. Welcome to CAMCO
Thank you for choosing CAMCO products. You are now the proud owner
of a very advanced CAMCO Amplifier. The technologies used in your
amplifier are of the latest generation and designs delivering a far reaching
set of results across all functions.
The amplifier has been designed to be incorporated into a professional
speaker system and is suitable for use across all applications from Touring
Live Sound to Fixed Installations.
Your speaker systems will benefit from the renowned CAMCO sonic qual-
ity as well as the many operating functions and features detailed within
this manual which are incorporated within the design to maximise results.
The CAMCO peace of mind long term manufactures warranty is our com-
mitment to you that every CAMCO amplifier is ready to give you many
years of faultless service.
WELCOME TO CAMCO!
1.1 Unpacking
Please unpack and inspect your new amplifier for any damage that may
have occurred during transit. If damage is found, notify the transportation
company immediately. Only you the consignee may initiate a claim for
shipping damage. CAMCO will be happy to cooperate fully as needed.
Please save the shipping carton as evidence of damage for the shipper’s
inspection.
Even if the amplifier has arrived in perfect condition, save all packing mate-
rials so you will have them if you ever need to transport the unit.
lNOTE
Never ship the amplifier without the original packing materials.
When shipping the iD4 amplifier, always use the original shipping carton
and packing materials. For maximum protection, repack the unit as it was
originally packed at the factory.

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2 THE AMPLIFIER
2. The Amplifier
The iD4 is a Class-H power amplifier with a power output of:
Power output Operating mode
iD4
1× 4 500 W  monobridge@ 8Ωpeak
1× 3 800 W  monobridge@ 8Ω
1× 3 000 W  monobridge@ 4Ω
2× 2 250 W  dualchannel@ 4Ωpeak
2× 2 000 W  dualchannel@2,7Ωpeak
2× 1 900 W  dualchannel@ 4Ω
2× 1 500 W  dualchannel@ 2Ω
iD4 amplifiers are fitted with Switched Mode Power Supplies (SMPS),
which significantly reduces the weight and size (only 2U) of the amplifier.
Using SMPS, the 2 symmetrical supply voltages of the power amplifier
are more stable than the power supplies used in conventional amplifiers.
The iD4 has been designed as a powerful two channel amplifier with on-
board 64 bit DSP processing. Both amplifier settings and DSP settings
can be user adjusted to match a speaker systems specifications. With up
to 100 onboard speaker pre-set storage capability, fine tuning of a system
or differing systems is fast, easy and strait forward; the user interface is
designed to be intuitive allow for quick familiarisation.
The combination of both power amplifier and on-board DSP technologies
used in the iD4, provide the level of control and audio quality expected
in any professional applications. The iD4, a very powerful and complete
speaker management system, with optimum flexibility and maximum con-
trol and security.
Since some of the externally mounted controls have multiple functions, it
is important that users should familiarise themselves thoroughly with the
entire range of controls.

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MODEL :
OUTP UT PWR P ER C H/IMP:
MADE IN GE RMANY
S E R . NO. :
iD 4
220 V ~ 50 / 60 Hz 11,3 A 1220 W
1900 W / 4 Ohm
xxxxx
2 THE AMPLIFIER
2.1 iD4 – The Front
Signal-LEDs
Clip-LEDs
Character LCD
Channel buttons
Item buttons
Menu buttons
Rotary encoder with push button
Removable air filter system
Cooling air inlet vents
On/Off switch
2.2 iD4 – The Rear
XLR – line input 1
XLR – line input 2
AES input
Ethernet network input
Cooling air outlet vents
SPEAKON® output 2
SPEAKON® output 1
Rating plate
AC power cable
      


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
   
  
  
iD4
120 V ~ 50/60 Hz 22,6 A 1220 W
1900 W / 4 Ohm

   
  
  
iD4
220 V ~ 50/60 Hz 11,3 A 1220 W
1900 W / 4 Ohm

   
  
  
iD4
230 V ~ 50/60 Hz 11,3 A 1220 W
1900 W / 4 Ohm
3 INSTALLATION
3. Installation
3.1 Mains Supply
When mounting or connecting the amp always disconnect it from mains.
Only connect the iD4 amplifier to an appropriate AC circuit and outlet,
according to the requirements indicated in the second line on the rating
plate.
Exemplary rating plates for the three available amplifier variants.
Power supply data of all available variants:
Operating condition
Mains
current
(4Ω/2Ω)
Power
consumption
(4Ω/2Ω)
Output
power
iD4
Amplifier standby (power off) < 0,5 A 8 W 0 W
Idle (amplifier powered on) 1,3 A 70 W 0 W
250 W per channel 8,5 / 10 A 1 220 / 1 500 W 500 W
Mains current draw and power consumption @ 230 V, 50 Hz
Measured with pink noise with crest factor of 12 dB to represent typical music signal.
For 120 V mains operation, the current values can be multiplied by 2.
3.2 On / Off Switch
The On / Off Switch is a rocker-type switch. It is located on the right side
of the front panel. To turn the amplifier on, press on the upper part of the
switch. During power up the Clip- and Signal-LEDs from both channels
will light up in red for a few seconds. To turn the amplifier off, press on the
lower part of the switch.
Amplifier is switched on Amplifier is switched off
lNOTE
This switch does NOT disconnect the amplifier from mains. Discon-
necting the amplifier from the main power supply can only be achieved
by disconnecting the mains plug or by an external all-pole disconnection
(e.g. a mains / circuit breaker). The mains plug or circuit breaker therefore
has to be freely accessible at all times. Disconnect the mains plug from the
mains during a lightning storm or when the amplifier remains unused or
unsupervised for a prolonged period of time.
The switch initiates start-up by activating the inrush current limiter. As soon
as the power amplifier is connected to the mains power supply, a voltage
is supplied to both the line-filter and the fused input of the controllable
rectifier.
If a power cut occurs while the amplifier is switched on, it will restart auto-
matically once the power supply has been restored. All amplifier settings
prior to the loss of power will be maintained.

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465,0 mm
76,20 mm
88,10 mm
10,50 mm
7,50 mm
442,00 mm
483,00 mm
418,60 mm
409,60 mm
431,00 mm
3 INSTALLATION
3.3 Mounting
Use four screws and washers when mounting the amplifier to the front rack
rails. For mobile use, the amplifier should also be secured using the 19”
mounting elements on the rear panel.
3.4 Cooling
The air is taken in from the front and out through the back. It is essential
that while the amplifier is running the air is able to circulate around it freely.
The efficiency of the cooling will depend on the immediate environment
(e.g. an enclosed rack, direct sunlight). If the amp is installed in a case,
the open area at the back of the case must be at least 140 cm². This area
should be in line with the amplifier.
If this cannot be achieved a forced ventilation system has to be used.
Note that continous high power draw at low load impedance (equal or
lessthanapprox.2,7Ω)candrivetheamplifierintothermallimitation.So
please check the amplifier temperatures on the display or in the DSP con-
trol application and reduce the onput levels if necessary.

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3 INSTALLATION
3.5 Signal Inputs
3.5.1 Analog Input
XLR: Pin 1 = Ground
Pin 2 = Hot (inphase)
Pin 3 = Cold (out of phase)
Always use symmetrical (balanced) shielded cable to connect the amplifier.
3.5.2 AES Input
The digital AES XLR input accepts any AES / EBU signals (pro or consumer
format) in 16 to 24 bit resolution and 44,1, 48, 88,2, or 96 kHz samplig fre-
quency. This wide input frequency range of is guaranteed by an integrated
sample rate converter (SRC) chip.
3.6 Remote Control / Network Input
The Ethernet Link network connector allows you to access the iD4 from
a host computer for remote control, firmware update and downloading
DSP presets.
The iD4 is configured by default to use DHCP for automatic IP address
assignment in the network. If not desired, this feature can be set through
the DSP Control application.
3.7 Power Outputs
3.7.1 SPEAKON®Connection
Both SPEAKON®connectors are connected to channel 1 and channel 2
outputs. The pin configuration of the SPEAKON connectors is as follows:
SPEAKON®right: Pin 1 + Channel 1 signal
(View at the back) Pin 1 – Channel 1 ground
Pin 2 + Channel 2 signal
Pin 2 – Channel 2 ground
SPEAKON®left: Pin 1 + Channel 2 signal
(View at the back) Pin 1 – Channel 2 ground
Pin 2 + Channel 1 signal
Pin 2 – Channel 1 ground
!WARNING!
SPEAKON®connectors marked with the lightning flash indicate high
voltages that are potentially life threatening.
Wiring to these terminals requires installation by an instructed person or
the use of ready-made leads or cords.
Custom wiring should only be made by qualified personnel.
To prevent electric shock, do not operate the amplifier with any of the con-
ductor portion of the speaker wire exposed.
lNOTE
For reasons of safety and performance, use only high-quality fully
insulated speaker cables of stranded copper wire. Use the largest
wire size that is economically and physically practical, and make sure the
cables are no longer than necessary.
lNOTE
When connecting speaker cabinets in parallel, always use all the con-
tacts in both SPEAKON®connectors. If not, this may cause permanent
damage to the connectors and considerably reduce performance.

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In 1
In 2
iD4
In 1
In 2
iD4
180°180°
3 INSTALLATION
3.7.2 Dual Channel Operation
Two fully independent amplifier channels (“Stereo” – normal operating
mode).
Zmin=2ΩforDualChanneloperation
3.7.3 Mono Bridge Operation
One-channel mono bridged operation.
Zmin=4ΩforMonoBridgeoperation
In this mode the channel 2 amplifier stage processes the identical input
signal than channel 1, but with reversed phase. The channel 2 input signal
is not used / ignored.
The loudspeaker load must then be connected between the two posi-
tive channel outputs (pin 1+ and pin 2+) using a specially configured
SPEAKON®connector/ cable. This effectively doubles the maximum out-
put voltage. But please note that this also doubles the minimum allowed
loudspeaker impedance Zmin.
!WARNING!
In Mono Bridge Operation RMS output voltages can be as high as
200 VAC.
Wiring to the speaker loads must conform to NEC class 3 safety stand-
ards or its equivalent that meets all national and local electric codes. All
customer specific cables may only be manufactured by qualified suppli-
ers / personnel. All cabling or rewiring work must be carried out by quali-
fied personnel.

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4 OPERATION
4. Operation
4.1 User Interface Elements
lNOTE
This chapter only describes the basic user interface operation and
functions. Please refer to the separate DSP Control manual for an expla-
nation of the extensive Digital Signal Processing (DSP) options and
advanced features offered by the remote application.
4.1.1 Signal- / Protect-LEDs (multifunctional)
The Signal-LEDs are illuminated in green when the voltage level at the
outputreachesapprox.4V;thiscorrespondstoapowerof4Wintoa4Ω
load. The channel Signal-LEDs are illuminated red when the amplifier is in
Protect Mode (Mute), for example because of persistent DC-voltage at the
outputs or overheating.
When switching the amplifier on, the Signal-LEDs will also light red for
a few seconds while the DSP is starting up (along with the Clip-LEDs).
In case the FuseProtect limiter is activated, it is possible that the (green)
Signal-LED’s will glow in orange or red colour for short periods of time
while the amplifier is playing music.
àSee also chapter 4.5.5 Fuse Protection
4.1.2 Clip-LEDs (multifunctional)
The colour of the bi-coloured LED changes between orange and red,
depending on the clip intensity. Orange indicates light clipping, red indi-
cates heavy clipping. These LED’s exclusively indicate hardware clipping
of the power amplifier stage. Possible internal DSP limitation and compres-
sion is not indicated here.
4.1.3 CHANNEL Buttons
The CHANNEL buttons allow to select the channels to make adjustments
on. Selectable items are In 1 to In 4 and Out 1 and Out 2 (depending on
user and access rights). Note that if channels are linked the settings will
always affect both linked channels. In this case the channel selection will
display In 12, In 34 or Out 12.
4.1.4 ITEM Buttons
The ITEM buttons allow you to navigate trough all parameters which can
be set from the front panel. Note that currently only a small choice of
parameters can be set from the amplifier user interface. For full access
on all settings and parameters please use the DSP Control remote control
application. The parameters are:
Gain àGain settings in 0,25 dB steps*
Source àSelects the source of the chosen input channel:
Analog
AES Channel 1
AES Channel 2
AES Mono Sum
AES Stereo
Delay àSignal delay settings
Link àSelects if Input 1 & 2, Input 3 & 4 or Output 1 & 2 shall be
linked
*Smaller steps (0,01 dB) can be set via the DSP Control remote application.

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4 OPERATION
All settings and selections are done through the rotary encoder. Changes
will take effect immediately.
4.1.5 MENU Buttons
The left (3) MENU button will always act as an ESCAPE / EXIT button.
The right (4) MENU button offers following sub-menus, accessible
through repeated pressing on the right MENU button:
Load preset
Save preset
Access Level control
Auxilliary information:
àVersion Info Serial Number (SN)
àVersion Info FW Version (SW)
àVersion Info Hardware Version (HW)
àIP Address
àMAC Address
àTemperature of both amplifier stages
Inside the Auxilliary information menu you can navigate through the sub
menus with the encoder wheel. Note that in this menu the encoder will only
work in a round-robin fashion, regardless of the rotation direction.
lNOTE
The left (3) MENU button always acts as an ESCAPE / EXIT button in
all menus.
4.1.6 Rotary Encoder with Push Button
The rotary encoder allows to make swift adjustments of parameters (like
for example the Gain settings) by simply turning it in the desired direction.
In some menus the push-function of the encoder will act as an ENTER
button, for example when selecting / loading presets.
4.2 Hot Key Functions – Standby
To set the iD4 to standby mode simply press both (34) MENU buttons
simultaneously for more than three seconds. You will then be asked if you
want to switch to Standy Mode. Pressing the encoder knob (without rotat-
ing it) will then power down the main power supply of the iD4.
The standby function can of course also be controlled by the DSP Control
remote application.
4.3 Standby Function
The iD4 offers the possibility to set the amplifier into standby mode either
from the user interface or by the DSP Control remote application.
In standby mode the iD4 will power down it’s main SMPS, thus saving
energy while at the same time staying accessible via network connection.
From the amplifier’s user interface this function is accessible through a Hot
Key function as described above.
Inside the DSP Control remote application you can access this function
through the Hardware menu.
An additional feature is the automatic standby function which will set the
iD4 in standby mode if no input signal (analogue and / or AES) is applied
for a certain period of time. This delay time can be set individually (or
switched off) inside the DSP Control remote application through the
Hardware àConfigure àStandby Delay menu.
lNOTE
If the amplifier has been set into standby through the auto-standby
function, automatic wakeup will only work if digital AES input signal
is applied again.
Applying analogue signal again will not wakeup the amplifier.
When unsing analogue input signal, exiting the automatic standby mode
must be done manually through the user interface or the DSP Control
remote application. So please consider this carefully before using this
function with analogue input signal.

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4 OPERATION
4.4 Power Amp Protection Systems
4.4.1 Clip Limiter / Underimpedance Limiter
The DSP section of the iD4 offers various limiter and compressor settings,
both on the signal inputs and on the signal outputs. Those limiters and
compressors can be adjusted and even switched off completely if desired.
Disabling the limters is done by setting the thresholds to their highest
values.
But in case the amplifier is driven into hardware clip (i. e. when the Clip-
LED is glowing orange or red) for longer periods of time, the threshold
setting of the output limiter will automatically be reduced temporarily.
Note that this is automatically done inside the amplifier and cannot be
seen in the DSP control application.
This automatic threshold reduction will especially take place at low output
impedances(smaller4Ω)andhighoutputpowersandshallpreventthe
amplifier from being operated in continuous hard amplifier cliping.
4.4.2 SOA Protection
Whenever the power transistors leave their Safe Operation Area (SOA), the
SOA-protection switches back the rail of the respective channel.
4.4.3 DC Protection
Each output of the power amp is constantly monitored for persis-
tent DC voltage levels. If the 3 V thresholds are exceeded at any
of the outputs, the corresponding channel will be muted. If DC
was only detected for a short moment, the amplifier will release
mute and work as normal. If DC is detected for longer periods or
repeatedly, the amplifier will switch to standby mode and disable the
main power supply. If this happens the display will indicate “Error – amp
switched off”.
In this case, switch off the amplifier for at least 4 minutes and switch the
amplifier on again.
4.4.4 Over Current Protection
Over current is permanently controlled in the output stage. There are two
limiting levels of over current depending on output voltage. These limits
will be set automatically. This improves reliability without degrading sound
quality when driving complex loads.
4.4.5 Thermal Protection
There are several sensors inside the amplifier in order to ascertain tem-
perature data. If a temperature of more than 85 °C is detected at the heat
sinks, the input signal on that channel is reduced.
4.5 Mains Protections
4.5.1 Inrush Current Limitation
Within 2 seconds of the amplifier being switched on, the inrush current
limiter will increase mains current from nearly zero to nominal value. This
value depends on program material, output level and speaker loads.
4.5.2 Mains Over Voltage Detection
Mains over voltage detection is always operative. When the mains voltage
exceeds approx. 263 V (220 / 230 V operation) or 134 V (110 / 120 V opera-
tion), the amplifier will be switched off. The system will try to restart in inter-
vals and will return with a soft start when the regular mains voltage returns.
4.5.3 Mains Surge Overvoltage Protection
The iD4 is fitted with a varistor unit, protecting the SMPS from sporadic
surge overvoltages coming from the mains distribution.
4.5.4 Mains Failure Detection
Mains failure detection is always operative. When the mains supply is inter-
rupted for about 2 mains cycles, the amplifier will be switched off. When
the mains voltage returns to a normal value, a soft start occurs.

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4 OPERATION
4.5.5 Fuse Protection
When driving the iD4 at very high output levels over a longer period of time
(i.e. several seconds and minutes) the average mains current draw can
become very high. In such situations, the FuseProtect limiter will reduce
the output signal in order to prevent the external mains breaker from trip-
ping. But this limiter in turn will not affect the output signal on dynamic
music signal and short current peaks, thus guaranteeing the full available
peak output power.
Please note that the FuseProtect limiter only controls the average mains
input current, not the short term peak input current. This means that with
very dynamic music signals the (short term) input current can still reach
very high levels, which can be very demanding for a mains distribution.
If active, the operation of the FuseProtect limiter can be seen by short
orange or red glowing of the Signal-LED’s.
4.6 Main SMPS Protections
4.6.1 Over Current Protection
Main SMPS (Switched Mode Power Supply) transformer current is continu-
ously monitored. If over current occurs, the main SMPS immediately stops
working. Should there be an internal failure, this feature prevents other
parts being damaged.
4.7 Fans
The fans mounted in the iD4 operate permanently, but as long as the tem-
perature remains below 40 °C they run at their slowest speed and can
hardly be heard. The highest detected temperature from either channel
controls the speed of the fans: above 40 °C the speed is increased until it
reaches its maximum value.

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


4 OPERATION
4.8 Filter Cleaning
The air intake on the front of your iD4 amplifier is fitted with a removable
filter system. If the filter becomes clogged, the unit will not cool as effi-
ciently as it should and may result in reduced output levels.
iD4 Filter Assembly
Foam filter
Front frame
Screw
!WARNING!
Turn off and disconnect the amplifier from the mains before removing
the front frame.
To clean or replace the filter just slightly unscrew the fixing screw with the
help of a 3 mm allen key. The screw will be held back by a small plastic
spacer on the back of the frame to avoid losing it. Then shift the front
frame slightly to the right. Then you should be able to remove the frame
from the amplifier completely (pull gently to avoid any bending of the front
frame).

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5 TROUBLESHOOTING
5. Troubleshooting
5.1 Problem: No reaction when switching the amplifier on
If nothing happens when switching the amplifier on (i.e. the display stays
totally dark, no message inside the display), please check following points:
Check mains cable and plug
Confirm that the AC outlet works by plugging in any other device
5.2 Problem: No sound
If no sound can be heard on the outputs please check following DSP set-
tings (through the DSP control application):
Input source selection
Input and output gain settings
Input and output limiter settings
If digital (AES) input signal is used, please check AES signal source
(samplig frequency, bit resolution and signal quality (long cables))
5.3 Problem: Error message: “Error – amp switched off”
This error message indicates an internal error which forced the main
power supply (SMPS) to be switched off. This can be caused by:
Detection of permanent DC on the outputs
Detection of amplifier stage malfunction (protect)
Detection of main SMPS error
You can try to power-cycle the amplifier to reset all amplifier stage detec-
tion circuits. This might help in case the DC or amplifier fault was caused
by an invalid input signal (e.g. an extremely high frequent or extremely
distorted input signal).
For this please switch off the amplifier for at least 4 minutes and switch
the amplifier on again. If the message still appears after this procedure the
fault is permanent and the amplifier requires servicing.

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6 SPECIFICATION
6. Specification
Output power
1 kHz, THD ≤1%, in dual channel operation
typical values @ 230 V / 50 Hz
durationlimitedbyfuse/thermalprotectionforRL≤8Ω
2 × 600 W @ 16 Ω
2 × 1 100 W @ 8 Ω
2 × 1 900 W @ 4Ω
2 × 1 950 W @ 2,7Ω
2 × 1 500 W @ 2Ω
Peak output power
1 kHz, single sine wave in dual channel operation
typical values @ 230 V / 50 Hz, may be subjected to component tolerances
2 × 630 W @ 16Ω
2 × 1 240 W @ 8Ω
2 × 2 250 W @ 4Ω
2 × 2 000 W @ 2,7Ω
2 × 1 500 W @ 2Ω
Mono bridge operation output power
1 kHz, THD ≤1%,inmonobridgeoperation
typical values @ 230 V / 50 Hz
durationlimitedbyfuse/thermalprotectionforRL≤16Ω
1 kHz, single sine wave in mono bridge operation
typical values @ 230 V / 50 Hz, may be subjected to component tolerances
1 × 2 200 W @ 16 Ω
1 × 3 800 W @ 8 Ω
1 × 3 000 W @ 4 Ω
1 × 2 480 W @ 16 Ωpeak*
1 × 4 500 W @ 8 Ωpeak*
1 × 3 000 W @ 4 Ωpeak*
70 / 100 V line operation output power
1 kHz, THD ≤1%
* only possible in mono bridge operation (single channel)
2 × 1 800 W @ 70 V line
1 × 2 500 W*@100 V line
Circuitry Bipolar, Class H 2 step high efficiency circuit
Signal to noise-ratio
10 Hz – 20 kHz, 8 Ωload
> 102 dB (unweighted)
> 105 dB (A-weighted)
Power consumption @ 230 V
* both channels driven at 250 W output power (approx. of max. THD limited output power
with pink noise to represent typical music signal)
Amplifier standby (power off): 8 W
Idle (Amp powered on): 70 W
4Ω:1 220W*
2Ω:1 500W*
Maximum output voltage
in dual channel operation; typical values @ 230 V / 50 Hz ± 142 V peak
Maximum output current
in dual channel operation; typical values, may be subjected to component tolerances ± 39 A peak
We reserve the right to make technical alterations without prior notice.