Amperes DA2208 User manual

Precision Design,Absolute Confidence www.ampereselectronics.com
INSTRUCTION MANUAL
DA2208
2 in 8 out audio distributor
CH1
P O W ER
a m pe r e s

We believe your trust in employing this product in your installation shall in a way enhance the
performance of the system. Why ?... We had came a long way to make every product rolled out
from our factory meets your demands for reliable and worthy piece of equipment.
By using every Amperes product, you can be assured of money well worth invested in, as we do
not end here. After sales services, parts availability and prompt turn around downtime are our key
matters in our after sales objectives.
Our continuous improvement policy ensures any new features or upgrades shall be included in
future batches and is our commitment in producing best possible product for the industry.
Although it is not difficult to install this unit, a brief reading of the manual is truly recommended to
avoid any wrong connections as well as explore the potential usage of the product to its maximum.
Thank you for purchasing another product from Amperes.
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CH1
P O W E R
a m pe r e s
1. TREBLE LEVEL ADJUST
Every individual output shall have it treble level adjustment knob. Position at the centre shall be
unity gain for treble.
2. VOLUME ADJUST
Each output channel has volume adjustment knob from min ( -40 dB ) to max gain of 4 dB.
amperes DA2208 2
Parts Identifications

3. BASS LEVEL ADJUST
Similar to treble adjust knob, every individual output shall have it bass level adjustable from its
original signal. Position at the centre shall be unity gain.
4. POWER SWITCH
To switch on / off the DC power connected to the unit.
5. DC POWER CONNECTOR
The unit operates using 24V DC power supply, either via AC/DC adaptor or Amperes PS9400
power supply unit. We strongly recommend regulated power supply for powering the unit. Direct
powering via 24V battery charger or battery connected to battery charger should be avoided.
6. AUDIO SIGNAL INPUT - GROUP A
Audio signal input to be amplified and distributed should be balanced line signal. Max input shall
be 1.2V rms. Signal inserted to this input shall be routed to Group A outputs.
7. INPUT SIGNAL LINK SWITCH
.If the unit is to be used as 1 input and 8 output, switch the slider to link position. In this case, do
not connect the input signal to the input signal jack for Group B
8. AUDIO SIGNAL INPUT - GROUP B
Audio signal input to be amplified and distributed should be balanced line signal. Max input shall
be 1.2V rms. Signal inserted to this input shall be routed to Group B outputs.
9. AUDIO OUTPUT - GROUP A
Audio signal from XLR input Group A shall be distributed through the 4 nos of XLR jacks
indicated as Group A outputs.
10. AUDIO OUTPUT - GROUP B
Audio signal from XLR input Group B shall be distributed through the 4 nos of XLR jacks
indicated as Group B outputs. If the unit is in linked mode, the outputs shall be the amplified
signal of Group A input.
amperes DA2208 3
Parts Identifications

DA2208 can be used for various applications, such as :
- distribution of single audio signal to multiple units of power amplifiers
- distribution of audio signal from one location to multiple sites
- tone controls of various locations according to lestening taste from single audio source
- PA application in uninterrupted paging system
Typical schematics for audio distribution from single / double source to multiple units of
amplifiers.
amperes DA2208 4
CH 1
PO W E R
am p e re s
O
I
2 1 22
MX
amp e r e s
SIG IN
AUX
MAXMIN MAXMIN MAXMIN MAX
SIG IN SIG IN
CH 2CH 1 CH 3
MINMIN MAXMIN MAX
SIG INSIG IN SIG IN
CH 4 CH 6CH 5
TON EC T R L
MIN MAX
TRE B L EMIX E RC HIME
SIG IN
MIN
SO U R C E
MIN MAXMAX
EXT INP U T
MIN MAX
BAS S
SIG IN
MU S I C SOU R C E
MA S T E R
OFF
CAS S
CD
TUN E R
SEL E C TOFF
PO W E R
O
I
P A 2 1 2 0
am p e re s
SIG N A L -40 d B
SIG N A L -10 d B
POW ER
PRO TECT
CLIP
2 1 20
P A
120W atts
PO W E R
O
I
P A 2 1 2 0
am p e re s
SIG N A L -40 d B
SIG N A L -10 d B
POW ER
PRO TECT
CLIP
2 1 20
P A
120W atts
PO W E R
O
I
P A 2 1 2 0
am p e re s
SIG N A L -40 d B
SIG N A L -10 d B
POW ER
PRO TECT
CLIP
2 1 20
P A
120W atts
PO W E R
O
I
P A 2 1 2 0
am p e re s
SIG N A L -40 d B
SIG N A L -10 d B
POW ER
PRO TECT
CLIP
2 1 20
P A
120W atts
PO W E R
MX2222 Pre-amplifier mixer
BGM output to Group B input
mixed output to Group A input
BGM amplifiers
Paging amplifiers
Group B output
Group A output
to speaker zone selector - amperes zs5602
balanced line output
Note :
Use DA2208 when the output from a mixer ( or any other source ) is to be linked to many
amplifiers ( typicall exceeding 6 units ). Otherwise it shall not be required and can be fed to
amplifier inputs directly from mixer.
Schematic illustrates the
setup for uninterrupted
paging system, with dual
audio signals are to be
connected to 2 sets of
amplifiers.
AMPERES DA2208
Application Schematics

Typical schematics for audio distribution from one location to multiple sites / multiple zones
with different tone controls
amperes DA2208 5
PO WE R
a m pe r e s
O
I
2 1 2 2
M X
am p e r e s
SIG I N
AU X
MAXMIN MAXMIN MAXMIN MAX
SIG I N SIG I N
C H 2C H 1 C H 3
MINMIN MA XMIN MAX
SIG I NSIG IN SIG IN
C H 4 C H 6C H 5
TO N E CT R L
MIN MAX
TR E B L EMI X E RCH I M E
SIG I N
MIN
SO UR C E
MIN M A XMAX
EX T I N P U T
MIN MA X
BA S S
SIG I N
MU S IC SO U R C E
M A S T E R
OF F
CA S S
CD
TU N E R
SE L E CTOF F P OW ER
C H 1
output 1
output 2
output 3
output 4
output 7
output 8
pre-amplifier mixer
AMPERES DA2208
audio output - line balanced
location A
( soft music )
location B
( paging only )
location C
( monitoring )
location D
( recording )
location E
( general )
location F
( general )
The schematic above illustrates a setup where a single source is to be distrib-
uted to different locations ( eg. different block of building ), and each requires
different level of treble or bass.
balanced line outputs

amperes DA2208 6
Group A input Group B input
Link switch
output 1 to output 4
of group A
output 5 to output 8
of group B
treble control bass control
output level
control
signal amplifier
audio splitter
XLR Female XLR Male
Pin 2 ( Hot )
Pin 1 ( Ground )
Pin 3 ( Cold or -ve )
Pin 2 ( +ve )
All inputs and outputs available in DA2208 are in balanced mode. In the event that
unbalanced signal is to be used, pin 1 and pin 3 shall be shorted.
It is recommended that for a long distance cabling, balanced signal mode is used to
avoid noise distortion in cabling.
Unbalanced signal can be inserted to DA2208 and obtain balanced output.
Block Diagram
Connections

NOTE :
Amperes Electronics Sdn Bhd has the policy of improving or reviewing its products in design, performance as
well as quality from time to time. It is therefore, Amperes Electronics has the right to change the above
specifications without prior notice. The specification change shall cover the physical appearance, features as well
as components used. However, amperes Electronics shall maintain at all times that the products manufactured
are of highest quality.
Input voltage 24V DC
Power consumption 2.4W
Configuration 1 in x 8 outputs / 2 in x 4 outputs
Input impedance 10 K Ohm
Input level Line ; 1V rms max
Input jack XLR balanced line signal
Output 8 x XLR balanced line signal
Indicator Power LED
Controls Channel volume, Bass and Treble
Cut off frequencies Bass :
Treble :
Bass control +/- 2.5 dB ( 100 Hz )
Treble control +/- 2.5 dB ( 10 KHz )
Max output level 1.2V @ 1 KHz
Nominal gain + 4dB
Frequency response 150 - 19 KHz (+/- 3dB @ 1KHz)
Dimensions 482 x 44 x 180 mm
Weight 2.0 kg
amperes DA2208 7
Technical Specifications

Only Amperes Electronics Service Centres are allowed to make warranty repairs : a list of Amperes
Electronics Service Centres may be asked for by the purchaser or send directly to Amperes
Electronics Sdn Bhd or its authorized master distributor, Amperes Global Marketing.This warranty is
not valid if repairs are performed by unauthorized personnel or service centres.
This warranty covers only repairs and replacement of defective parts ; cost and risks of
transportation as well as removal and installation of the product from the main system are for the
account of the purchaser.This warranty shall not extend to the replacement of the unit.
This warranty does not cover damages caused by misuse, neglect, accident of the product as well as
using the product with power supply voltage other than shown on the product, or any other power
supply source / adaptor not recommended by the manufacturer.
This warranty does not cover damages caused by fire, earthquakes, floods. lightning and every cause
not directly related to the unit.
This warranty does not include any indemnity in favor of the purchaser or the dealer for the period
out of use of the unit; moreover the warranty does not cover any damages which may be caused to
people and things when using the product.
This warranty certificate is valid only for the described product, and is not valid if modifications are
made on this certificate or on the identification label applied on the product.
This warranty covers all the material and manufacturing defects and is valid for a period of 12
months from the date of purchase or for a longer period in countries where this is stated by a
national law. In this case, the extension is valid only in the country where the product is purchased.
Amperes Electronics Sdn Bhd is not obliged to modify previously manufactured products under
warranty if the design changes or improvements are made.
Warranty Conditions
Disclaimer
Information contained in this manual is subject to change without prior notice and does not
represent a commitment on the part of the vendor. AMPERES ELECTRONICS SDN BHD shall not be
liable for any loss or damages whatsoever arising from the use of information or any error contained
in this manual.
It is recommended that all services and repairs on this product be carried out by AMPERES
ELECTRONICS SDN BHD or its authorized service agents.
AMPERES series must only be used for the purpose they were intended by the manufacturer and in
conjunction with this operating manual.
AMPERES ELECTRONICS SDN BHD cannot accept any liability whatsoever for any loss or damages
caused by service, maintenance or repair by unauthorized personnel, or by use other than that
intended by the manufacturer.
Made In Malaysia
By AMPERES ELECTRONICS
www.ampereselectronics.com
Updated Jan2010
ISO 9001: 2008
Design & Manufacture of Public Address Equipment and Systems
Certicate No. 16895 / A / 0001 / UK / En