Glensound ADA2:6 User manual

ADA2:6
Analogue Distribution Amplifier
2 in 6 out (Stereo) or 1 in 12 out (Mono)
User Guide
Glensound
6 Brooks Place, Maidstone
Kent, UK, ME14 1HE
Tel: [phone]
www.glensound.co.uk

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Glensound Electronics Ltd
Thank you for choosing a new Glensound product.
All rights reserved.
Information contained in this manual is subject to change without notice, if in
doubt please contact us for the latest product information.
If you need any help with the product then we can be contacted at:
Glensound lectronics Ltd
1 – 6 Brooks Place
Maidstone
Kent
M 14 1H
United Kingdom
Telephone: [phone]
Fax: [phone]
MAIL ADDR SS S
General enquires: [e-mail]
Technical enquires: [e-mail]
Sales enquires: [e-mail]

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IMPORTANT SAFETY INSTRUCTIONS
1) Read these instructions
2) Keep these instructions
3) Heed all warnings
4) Follow all instructions
5) Do not use this apparatus near water
6) Clean only with a dry cloth
7) Do not block any ventilation openings. Install in accordance with manufacturer s
instructions
8) Do not install near any heat sources such as radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce heat
9) Do not defeat the safety purpose of the polarized or grounding type plug. A polarized plug
has 2 blades with one wider than the other. A grounding type plug has 2 blades and third
grounding prong. The wider blade or the 3
rd
prong are provided for your safety. If the
provided plug does not fit into your outlet, consult an electrician for replacement of the
obsolete outlet
10) Protect the power cord from being walked on or pinched, particularly at plugs,
convenience receptacles and the point where they exit from the apparatus
11) Only use attachments/ accessories specified/ supplied by the manufacturer
12) Use only with the cart, stand, tripod, bracket, or table specified 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
13) Unplug tis apparatus during lightning storms or when unused for long periods of time
14) Refer all servicing to qualified 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
15) Do not attempt to modify this product. Doing so could result in personal injury and/ or
product failure
This symbol is intended to warn that
dangerous voltages within the product are
present and constitute a risk of electric
shock.
This symbol is intended to highlight that
there are important operating &
maintenance instructions in the literature
accompanying this unit.

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IMPORTANT: MAINS PLUG WIRING INSTRUCTIONS
This Signature unit is supplied with a moulded mains plug fitted to the AC mains
lead.
Mains wiring colours/ connections
The Green/ Yellow or Green wire must be connected to the terminal in the plug
marked ‘E’ or with the Earth Symbol.
The Blue or Black wire must be connected to the terminal in the plug marked ‘N’
(Neutral).
The Red or Brown wire must be connected to the terminal in the plug marked ‘L’
(Live).
THIS UNIT MUST BE EARTHED
THIS UNIT IS FITTED WITH AN INTERNAL MAINS FUSE.
The fuse is located internally between the Live terminal of the IEC plug and the
Live input of the power supply. The fuse should only be changed by a qualified
service engineer. If replacing the fuse care should be taken to fit a correctly rated
replacement. The fuse rating can be found in the technical specifications page of
this handbook.

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CE
This equipment manufactured by Glensound lectronics Ltd of Brooks Place
Maidstone Kent M 14 1H is CE marked and conforms to:
Low Voltage Directive: N60065
missions: N55103.1
Immunity: N55103.2
WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT
REGULATIONS 2006 (WEEE)
Glensound lectronics Ltd is registered for business to business sales of W in
the UK our registration number is:
W /JJ0074UR
RoHS2 DIRECTIVE
C directive 2011/65/ U restricts the use of the hazardous substances listed below
in electrical and electronic equipment.
This product conforms to the above directive and for this purposes, the maximum
concentration values of the restricted substances by weight in homogenous
materials are:
Lead
0.1%
Mercury
0.1%
Hexavalent Chromium
0.1%
Polybrominated Biphenyls
0.1%
Polybrominated Diphenyl thers
0.1%
Cadmium
0.
01%

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PRODUCT WARRANTY:
All equipment is fully tested before dispatch and carefully designed to provide you
with trouble free use for many years.
We have a policy of supporting products for as long as possible and guarantee to
be able to support your product for a minimum of 10 years.
For a period of one year after the goods have been despatched the Company will
guarantee the goods against any defect developing after proper use providing
such defects arise solely from faulty materials or workmanship and that the
Customer shall return the goods to the Company’s works or their local dealer.
All non-wear parts are guaranteed for 2 years after despatch and any defect
developing after proper use from faulty materials or workmanship will be repaired
under this warranty providing the Customer returns the goods to the Company's
works or their local dealer.

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ADA2:6 Analogue Distribution Amlifier
Handbook Contents
Issue 1,
Description Page No.
Contents
IMPORTANT SAFETY INSTRUCTIONS ........................................................................................................................ 3
PRODUCT WARRANTY: ...................................................................................................................................................... 6
OVERVIEW .......................................................................................................................................................................... 8
PHYSICAL INSTALLATION ................................................................................................................................................. 9
AUDIO BLOCK DIAGRAM ................................................................................................................................................ 11
EXAMPLES OF USE ........................................................................................................................................................... 12
1. R dio St tion CTA ............................................................................................................................................... 12
2. Comment ry Feed @ IBC ................................................................................................................................... 12
USER CONTROLS .............................................................................................................................................................. 13
1. G in/ Loss Controls ............................................................................................................................................ 13
2. Mono/ Stereo Switch .......................................................................................................................................... 13
WIRING INFORMATION ................................................................................................................................................... 14
1. St nd rd Pin Outs............................................................................................................................................... 14
2. Wiring to unb l nced devices ........................................................................................................................... 15
TECHNICAL SPECIFICATION ............................................................................................................................................ 16

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OVERVIEW
The Glensound Signature Series ADA2 6 is a professional audio distribution amplifier. It is
manufactured using high quality components and low noise audio circuits to provide many
years of trouble free use.
Although traditionally a broadcast manufacturer, Glensound’s products are equally at home
in professional and high end home studios, industrial installations and live pro sound
environments. The ADA2 6 can therefore be used in a number of applications.
The ADA2 6 features two individual balanced audio inputs on Neutrik XLRs. These inputs are
fed via preset gain controls (providing -10 to +15 dB of gain/ loss) to 12 individual output
amplifiers each fully isolated from each other.
It is possible to connect the balanced audio inputs & outputs to domestic style unbalanced
audio circuits and the preset gain controls provide sufficient input level adjustment to allow
this.
The unit is able to operate as a 2 into 6 stereo distribution amplifier or a 1 into 12 mono
distribution amplifier. A front panel toggle switch selects between these 2 modes.
The ADA2 6 is powered from an internal switch mode mains power supply fed from a filtered
IEC mains plug suitable for use Worldwide. It has an internal fuse for safety. The unit can also
alternatively be powered from an external +/-12V DC power source (such as the Signature
Series PS1). If both mains and external DC power sources are present then, if one power
source were to fail the unit would continue to work seemlessly from the other source.

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PHYSICAL INSTALLATION
The Glensound Signature Series have been designed to be highly versatile for installation and
can be installed in 19” racks with either their front or rear panels facing the front of the rack.
They can also be mounted underneath desks or work tops and can be either permananetly
mounted or stood (using the supplied feet) on top of desks or worktops.
INSTALLING SIGNATURE SERIES IN A 19” RACK
Firmly hold the signature subrack within the 19” rack and locate in 1RU of space. Use the
supplied 6mm rack screws to securly attach the unit to the rack.
INSTALLING ADHSIVE FEET FOR NON PERMANENT TABLE TOP MOUNTING
Remove the front rack ears (if they are not required), turn the unit upside down and attach
the supplied 4 sticky feet as per the above drawing.
Signature
g
Series
Keeps Working
PWR ON
PART No
CE
W
50/60Hz 2.7 Watts
100-240V
+/-12V - - -
PIN 1 = GND
PIN 3 = -12V (100mA)
PIN 2 = +12V (100mA)
Top

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SWAPPING RACK EARS TO ALLOW THE REAR TO BE INSTALLED AT THE FRONT OF A
RACK
First remove the 4 silver button head screws that fix the rack ears onto the front of the unit as
shown in the top picture above.
Remove the rack ears and turn the unit around for access to its back panel.
Re-fit the 2 rack ears using the same 4 silver button head screws that were removed from the
front as per the bottom picture above.
USING THE MOUNTING HOLES FOR PERMANENTLY ATTACHING THE UNIT ABOVE OR
BELOW A WORKTOP/ DESK
Use either the top or bottom mounting holes as indicated above to use suitable screws to
attach the signature unit to a worktop or bench. **PLEASE ENSURE THAT YOU USE SUITABLE
FIXINGS**
Series
Signature
g
K eep s Wo rkin g
PWR ON
PART No
CE
W
50/60Hz 2.7 Watts
100-240V
+/-12V - - -
PIN 1 = GND
PIN 3 = -12V (100mA)
PIN 2 = +12V (100mA)
Series
Signature
g
Keeps Working
PART No
PWR ON

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AUDIO BLOCK DIAGRAM
LEFT (MONO) IN
RIGHT IN
GAIN/ LOSS CONTROL
MONO/ STEREO
SWITCH
(SHOWN IN MONO)
100 - 240 VAC
INTERNAL
FUSE
AC/DC PSU +12V
-12V
EXT DC +/-12V

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EXAMPLES OF USE
1 Radio Station CTA
Mixer
Output
FM
Transmiter
Local
Monitoring
Digital
Services
Logging
ISDN
Backup
Headphone
DA
2 x XLR3
(balanced or
unbalanced)
2 x XLR3
2 x XLR3
2 x XLR3
2 x XLR3
2 x XLR3
2 x XLR3
The main stereo programme audio from a radio station needs to be distributed across
multiple platforms. The output from the desk or automation system no longer just heads off
to the transmitter. The audio must be distributed across all of the relevant services that
require a connection of the original programme audio.
In this example, the Signature ADA 2 6 provides 6 stereo outputs of the main programme
audio. One output connects to the transmitter as the main FM broadcast feed. As multiple
guest headphones are required in the studio, another output connects to a separate
headphone distribution amplifier. This station also broadcasts online, so another output
connects to a PC to become the internet broadcast stream. Local monitoring is required, so
one feed goes to the local monitoring system. The transmitter B chain is on ISDN, so one
output goes to an ISDN codec. And the final output connects to another PC that manages all
of the stations logging requirements.
2 Commentary Feed @ IBC
Commentators’
Mix
1 x XLR3
(balanced or
unbalanced)
1 x XLR3
Broadcaster 1
Broadcaster 3
Broadcaster 4
Broadcaster 5
Broadcaster 6
Broadcaster 2
1 x XLR3
1 x XLR3
1 x XLR3
1 x XLR3
1 x XLR3
1 x XLR3
Broadcaster 12
Broadcaster 10
Broadcaster 9
Broadcaster 8
Broadcaster 7
Broadcaster 11
1 x XLR3
1 x XLR3
1 x XLR3
1 x XLR3
1 x XLR3
A single channel mono feed is connected to the Signature ADA 2 6. This could be the master
programme mix output from a host commentary system at a sports stadium. This needs to be
distributed to all the relevant broadcasters who want to take the host commentary audio.
Twelve outputs from the ADA 2 6 are available, which all contain the original audio, and are
available to distribute to all of the relevant 12 broadcasters.

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USER CONTROLS
1 Gain/ Loss Controls
The front panel preset gain controls are recessed to prevent accidental usage. A small
screwdriver is required to adjust the controls.
The gain/ loss controls adjust a gain stage amplifier after the input amplifiers but before the
output amplifiers. There are 2 controls one each for the 2 inputs (Left & Right).
To turn the input gain down (i.e. lower the overall output level) rotate the preset pot anti-
clockwise. To turn the input gain up (i.e. increase the overall output level) rotate the preset
pot clockwise.
These gain controls are factory set for unity gain (i.e. 0dB input on the rear produces 0dB
outputs). The overall gain / loss available is +15dB of gain and -10dB of loss. Therefore the unit
will easily accommodate domestic unbalanced levels.
2 Mono/ Stereo Switch
The front panel Mono/ Stereo toggle switch is used to set the unit between 2 stereo inputs &
6 stereo outputs; or 1 mono input & 12 mono outputs.
When the switch is in the ‘MONO’ position the left input only is routed to all 12 outputs. When
the switch is in the ‘STEREO’ position the left input is routed to the 6 left outputs and the right
input is routed to the 6 right outputs.
1.
Gain/ Loss Controls
2.
Mono/ Stereo Switch

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WIRING INFORMATION
1 Standard Pin Outs
HEADPHONE WIRING NOTE:
The Signature Series range of products feature sophisticated headphone amplifiers whose stereo
outputs can be connected directly to mono headphone jacks without damaging the headphones
internal amplifiers.
12
3
XLR SOCKET (FEMALE)
1 2
3
XLR PLUG (MALE)
TIP
RING
SLEEVE
STANDARD XLR AUDIO PINOUTS:
1: Ground/ Earth
2: INPHASE/ POSITIVE/ MIC
3: MATE/ NEGATIVE/ MIC -
STANDARD HEADPHONE WIRING
:
TIP: A/ LEFT Ear
RING: B/ RIGHT Ear
SLEEVE: Common/ Earth

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2 Wiring to unbalanced devices
The input & output circuits of the Signature Series can be connected to unbalanced (domestic
style) devices. The wiring diagrams below show a mono jack plug as the unbalanced end of
the cable but this of course could easily be a different type of connector such as an RCA
Phono or ‘D’ type connector.
TO TIP
TO SLEEVE
TO TIP
TO SLEEVE
BALANCED OUTPUT
ON SIGNATURE UNIT
UNBALANCED INPUT
OF EXTERNAL DEVICE
BALANCED INPUT
ON SIGNATURE UNIT UNBALANCED OUTPUT
OF EXTERNAL DEVICE
12
3
21
3TIP
SLEEVE
TIP
SLEEVE

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TECHNICAL SPECIFICATION
FEATURES
POWER
AUDIO
PHYSICAL
Mains Input
Size
Internal Mains Fuse
Shipping Weight
DC Input
Mechanics
AC Consumption
Weight
Shipping Carton
Filtered IEC, 100 to 240VAC
47 - 63Hz
445 x 123 x 44mm (LxDxH no rack ears
482mm 19” (1RU with rack ears
20mm 500mAH Anti Surge
2.6kg
4 Pin Neutrik XLR plug +/- 12V
All aluminium construction, anodized and
laser etched
2.8 Watts @ 230VAC
1.16kg
Rugged export quality cardboard carton
610 x 420 x 130mm LxDxH
Frequency Response
Input Impedance
Common Mode Rejection
Maximum Input evel
Distortion
Input Type
Gain Range
Output Impedance
Output Type
Maximum Output evel
Noise
<-0.5dB 20Hz to 20kHz
>30k Ohm
Circa -63dB @ lineup
>+28dB
0.013% THD @ 100Hz, 1kHz & 10kHz
Reference to +8dBu output
Electronically balanced (can be wired
Unbalanced on Neutrik 3 pin XLR socket
-10dB to +15dB
=<50 Ohms
Electronically balanced (can be wired
unbalanced on Neutrik 3 pin XLR plug
+24dBu
-89dB @ line up unweighted
RMS (22Hz to 22kHz