ASA Series.indd - Extron Electronics

AUDIO PRODUCTS
ASA Series
AUDIO SUMMING AMPLIFIERS
■ Converts stereo audio signals to
balanced/unbalanced mono audio
■ The ASA 101, ASA 111, ASA 121,
and ASA 131 are convenient, passive
single-cable audio summing adapters
■ The ASA 204 and ASA 304 are four
independent, active audio summing
amplifiers in single enclosures
■ Versatile mounting options
ASA 101
ASA 111
ASA 121
ASA 131
ASA 204
ASA 304
The Extron ASA Series of high performance Audio Summing Adapters and Audio
Summing Amplifiers convert two-channel stereo audio signals to balanced or
unbalanced mono audio. Designed to be inserted between a stereo audio source
output and a mixer or pre-amplifier input, the ASA Series models are ideal for
background music, paging systems, distributed audio sound systems, and
environments that have a mono sound system.
www.extron.com
DESCRIPTION
FEATURES
ASA 100 Series
ASA 100 Series
The Extron ASA 100 Series of Audio Summing Adapters are
convenient, single-cable solutions for combining two-channel stereo
audio into a mono audio signal. They are ideal for mono PA systems
in churches, halls, arenas, stadiums, and other environments where
stereo sound reinforcement would provide an uneven reproduction to
the listener. Because they are small and passive devices, these Audio
Summing Adapters are especially useful in systems where power and
space are limited.
The ASA 100 series are configured as 2 foot long adapters with
various input connectors to match the specific outputs of stereo
source equipment. Each features a resistor network to properly sum
stereo signals without signal loss or damage to source equipment.
An internal transformer is offered on the ASA 101 to isolate the signal
from load and provide a balanced output. For a wider frequency
response the ASA 111, ASA 121, and ASA 131 are offered without an
internal transformer. The table below identifies the configurations of
the ASA 100 series.
■ Converts stereo audio to mono audio
■ Resistor network provides passive audio summing
■ Compact design for easy installation into small spaces or
behind equipment in a rack
■ Mono output on captive screw connectors
■ 2 foot (60 cm) length
■ The ASA 101 features an internal transformer to isolate signal
from load and provide a balanced audio output
■ The ASA 111, ASA 121, and ASA 131 feature a transformerless
design for wide frequency response
ASA 204 and ASA 304
■ Converts stereo audio to balanced or unbalanced mono audio
■ Active summing circuit
Model
Input Connector
ASA
100 Configurations:
ASA 101
(2) RCA Male
ASA 111
ASA 121
ASA 131
(1) 3.5 mm Stereo Mini Jack
(2) RCA Male
(1) Captive Screw Plug
Output
Transformer
■ Mono outputs on captive screw connectors
Bal./Unbal.
Unbalanced
Unbalanced
Bal./Unbal.
Yes
No
No
No
■ Switchable gain
All ASA 100 Series products are 2 feet long and have a captive screw
connector output.
Model
InputASA
Connector
ASA
204 and
304
Output
ASA Extron
204
(4) RCA
Pairs 304 are high performance
Bal./Unbal. Audio
The
ASA
204Female
and ASA
(4) 5-pole Captive
Screw Connectors
ASA 304 Amplifiers
Unbalanced
Summing
that convert
two-channel stereo
audio signals to
balanced/unbalanced mono audio signals. They are ideal for mono PA
systems in churches, halls, arenas, stadiums, and other environments.
The ASA 204 and ASA 304 offer four independent, active audio
summing amplifiers in a single enclosure. They convert stereo audio
signals from four different sources into mono audio signals and
include switch-selectable gain to achieve different output gain levels.
While the ASA 204 and ASA 304 offer different input connector
configurations to meet specific integration needs, both provide
Model
Input Connector
Transformer
balanced/unbalanced
outputs on captiveOutput
screw connectors.
These
ASA performance
101
(2) RCAsumming
Male
Bal./Unbal.
high
amplifiers enable
long cable Yes
runs and
(1) 3.5
mm Stereo Mini
Unbalanced
ASA 111 from
immunity
interference
andJack
noise normally
associatedNowith
(2) RCA Male
No
ASA
121of unbalanced
Unbalanced
the
use
audio equipment in
professional integration
(1) Captive Screw Plug
No
ASA 131
Bal./Unbal.
projects. The table below shows the configurations of the ASA 204
and ASA 304.
ASA 204 and ASA 304 Configurations:
Model
Input Connector
Output
ASA 204
ASA 304
(4) RCA Female Pairs
(4) 5-pole Captive Screw Connectors
Bal./Unbal.
Unbalanced
Active ASA products are housed in a 1U, quarter rack
width metal enclosure.
Part of the VersaTools® line of products, the ASA 204 and ASA 304 are
housed in 1U, quarter rack width metal enclosures, are easy to install
in small spaces, and are rack, under-desk, and projector-mountable.
■ Rack, under-desk, and projector-mountable
■ The ASA 204 features stereo inputs on RCA connectors
■ The ASA 304 features stereo inputs on captive screw
connectors
■ External international power supply included
(part # 70-055-01)
ASA 101 Gain Specifications
Input Channel
Output Wiring
Left
Right
Unbalanced
Balanced
signal
signal
——*
signal
——*
signal
0 dB
-6 dB
-6 dB
+6 dB
0 dB
0 dB
with this
connected
*Tested with
thisinput
inputremaining
remaining
connected
ASA 111, 121, & 131
Gain Specifications
Input Channel
Left Channel
Right
Input
Output
Unbalanced
Output Wiring
Left
Right
signal
signal Unbalanced
-1 dB
signal Signal
——*
-7dB
dB
Signal
0
——* ——*
signal
-7dB
dB
Signal
0
——* with
0 dB
**Tested
Tested
thisinput
inputremaining
remaining
withSignal
this
connected
connected.
Balanced
+6 dB
+6 dB
+6 dB
ASA 204 & ASA 304 Gain Specifications
Input Channel
Output Wiring
Output DIP Switch Settings
Left
Right
Unbalanced
Balanced
Signal
Signal
——
Signal
——
Signal
Balanced
Balanced
Balanced
+9 dB
+3 dB
+3 dB
+3 dB
-3 dB
-3 dB
Signal
Signal
——
Signal
——
Signal
Unbalanced
Unbalanced
Unbalanced
+3 dB
-3 dB
-3 dB
-3 dB
-9 dB
-9 dB
SPECIFICATIONS
ASA 101, 111, 121, and 131
ASA 204 and 304
AUDIO
AUDIO
Gain
Gain ......................................................... Generally unity. Actual gain depends on whether or
not both inputs have signals and also on the output
wiring and DIP switch settings. See previous page for
gain table.
Frequency response .................................... 20 Hz to 20 kHz, ±0.05 dB
THD + Noise ............................................... 0.03% @ 1 kHz at nominal level
S/N ......................................................... >90 dB (balanced) at rated maximum output
CMRR ......................................................... >75 dB @ 20 Hz to 20 kHz
ASA 101 .............................................. See previous page. Tested with a 20k ohm load.
ASA 111, ASA 121 ............................... See previous page. Tested with an unbalanced
output and a 20k ohm load.
ASA 131 .............................................. See previous page. Tested with a balanced output
and a 20k ohm load.
Frequency response
ASA 101 .............................................. 87 Hz to 20 kHz, -3 dB (with a 20k ohm load,
1% THD, and -10 dBV input)
All other models .................................. 20 Hz to 20 kHz, ±0.05 dB THD + Noise
ASA 101 .............................................. 1% @ 87 Hz to 20 kHz at nominal level
All other models .................................. 0.03% @ 20 Hz to 20 kHz at nominal level
S/N .................................................... 130 dB at maximum output
AUDIO INPUT
Number/signal type
ASA 101, ASA 111, ASA 121 ................
ASA 131 ..............................................
Connectors
ASA 101, ASA 121 ..............................
ASA 111 ..............................................
ASA 131 ..............................................
Impedance
ASA 101 ..............................................
1 stereo, unbalanced
1 stereo, balanced
1 pair of male RCA (tip-ring)
(1) 3.5 mm male stereo mini jack (tip-ring-sleeve)
(1) 3.5 mm captive screw connector, 5-pole
12k ohms (with a 20k ohm balanced load, one input
terminated); 250 ohms (with a 20k ohm balanced
load, both inputs terminated)
ASA 111, ASA 121 ............................... 22k ohms (with a 20k ohm unbalanced load, one
input terminated); 4k ohms (with a 20k ohm
unbalanced load, both inputs terminated)
ASA 131 .............................................. 24k ohms (with a 20k ohm balanced load, one input
terminated); 7k ohms (with a 20k ohm balanced
load, both inputs terminated)
Nominal level
ASA 101, ASA 111, ASA 121 ................ -10 dBV (316 mV)
ASA 131 .............................................. +4 dBu (1.23 V)
Maximum level
ASA 101 .............................................. +15 dBu (4.4 V) @ 1 kHz, (balanced or unbalanced)
at 1% THD+N; +4 dBu (1.23 V) @ 300 Hz to 20 kHz
at 1% THD+N
ASA 111, ASA 121, ASA 131 ................ +24 dBu (12.3 V) @ 20 Hz to 20 kHz, (balanced or
unbalanced) at 1% THD+N
NOTE: 0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu
AUDIO OUTPUT
Number/signal type
ASA 101 ..............................................
ASA 111, ASA 121 ...............................
ASA 131 ..............................................
Connectors .................................................
AUDIO INPUT
Number/signal type
ASA 204..................................................
ASA 304..................................................
Connectors
ASA 204..................................................
ASA 304..................................................
Impedance
ASA 204..................................................
ASA 304..................................................
4 stereo, unbalanced
4 stereo, balanced/unbalanced
4 pairs of female RCA (tip-ring)
(4) 3.5 mm captive screw connectors, 5 pole
>10k ohms unbalanced, DC coupled
>17k ohms unbalanced, 23k ohms balanced, DC
coupled
Nominal level
ASA 204.................................................. -10 dBV (316 mV)
ASA 304.................................................. +4 dBu (1.23 V)
Maximum level ........................................... +20 dBu (7.75 V), (balanced or unbalanced) at
1% THD+N
NOTE: 0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu
AUDIO OUTPUT
Number/signal type.................................... 4 mono, balanced/unbalanced
Connectors ................................................ (2) 3.5 mm captive screw connectors, 5 pole
(double stacked)
Impedance ................................................. <50 ohms unbalanced, 100 ohms balanced
Nominal level
ASA 204.................................................. -10 dBV (316 mV)
ASA 304.................................................. +4 dBu (1.23 V)
Maximum level (Hi-Z) (ASA 204, ASA 304 only)
>+23 dBu, balanced; or >+17 dBu, unbalanced at
1% THD+N
Maximum level (600 ohm)
(all models) ............................................. >+21 dBm, balanced; or >15 dBu, unbalanced
at 1% THD+N
GENERAL
1 mono, balanced/unbalanced
1 mono, unbalanced
1 mono, balanced
(1) 3.5 mm direct insertion captive screw connector,
3 pole
Impedance (with 50 ohm input impedance)
ASA 101 .............................................. 75 ohms unbalanced, 150 ohms balanced
ASA 111, ASA 121 ............................... 1k ohms unbalanced
ASA 131 .............................................. 2k ohms balanced
Nominal level
ASA 101, ASA 111, ASA 121 ................ -10 dBV (316 mV)
ASA 131 .............................................. +4 dBu (1.23 V)
Maximum level
ASA 101 .............................................. +15 dBu (4.4 V) @ 1 kHz, (balanced) at 1% THD+N
+4 dBu (1.25 V) @ 300 Hz to 20 kHz, (balanced) at
1% THD+N
ASA 111, ASA 121 ............................... +24 dBu (12.3 V) @ 20 Hz to 20 kHz, (unbalanced)
at 1% THD+N
ASA 131 .............................................. +24 dBu (12.3 V) @ 20 Hz to 20 kHz, (balanced)
at 1% THD+N
GENERAL
Power ......................................................... Not powered
Rack mount ................................................ Can be attached to any flat surface with supplied
Velcro®
Enclosure type ............................................ Molded plastic
Enclosure dimensions ................................. 0.7" H x 1.0" W x 1.5" D 1.8 cm H x 2.5 cm W x
3.8 cm D (Depth excludes the 24 inch long pigtail
for ASA 101 and ASA 121, and the 24 inch long
single cable for the ASA 111 and ASA 131.)
Product weight ........................................... 0.2 lbs (0.1 kg)
Shipping weight ......................................... 1 lb (1 kg)
Vibration ................................................... ISTA 1A in carton (International Safe Transit Association)
Listings ....................................................... UL, CUL
Compliances............................................... CE, FCC Class A, VCCI, AS/NZS, ICES
MTBF.......................................................... 30,000 hours
Warranty .................................................... 3 years parts and labor
NOTE: All nominal levels are at ±10%.
External power supply ................................ 100 VAC to 240 VAC, 50/60 Hz, external,
autoswitchable; to 12 VDC, 1 A (max.), regulated
Power input requirements .......................... 12 VDC, 0.2 A
Temperature/humidity ................................ Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%,
noncondensing Operating: +32 to +122 °F
(0 to +50 °C) / 10% to 90%, noncondensing
Rack mount ................................................ Yes, with optional 1U rack shelf,
part #60-190-01 or 60-604-01; or VersaTools® rack
shelf, part #60-190-20 or 60-604-20. Also furniture
mountable with optional under desk mounting
brackets, #70-212-01, or projector mountable with
bracket kit #70 217 01.
Enclosure type ............................................ Metal
Enclosure dimensions ................................. 1.7" H x 4.3" W x 3.0" D (1U high, quarter rack wide)
4.3 cm H x 10.9 cm W x 7.6 cm D (Depth excludes
connectors.)
Product weight ........................................... 0.5 lbs (0.3 kg)
Shipping weight ......................................... 3 lbs (2 kg)
Vibration ................................................... STA 1A in carton (International Safe Transit
Association)
Listings ....................................................... UL, CUL
Compliances............................................... CE, FCC Class A, VCCI, AS/NZS, ICES
MTBF ......................................................... 30,000 hours
Warranty ................................................... 3 years parts and labor
NOTE: All nominal levels are at ±10%.
Model
ASA 101 ....................................................
ASA 111 .....................................................
ASA 121 .....................................................
ASA 131 .....................................................
ASA 204 .....................................................
ASA 304 .....................................................
Part Number
60-551-01
60-738-01
60-739-01
60-740-01
60-552-30
60-552-20
Specifications are subject to change without notice.
APPLICATION DIAGRAMS
Zone 2 Ceiling
Speakers
Zone 1 Ceiling
Speakers
Extron
Program
Speakers
Extron
SW 6AV RCA
Switcher
SW 6AV RCA
Audio
Amplifier
RS
SW
OUT
INPU
C
0V
0V
1.3A
1.3A
1
2
100-24
100-24
1.3A
1.3A
CH
CH
2
CH
1
CH
1
2
40V
40V
100-2
100-2
2
1
UTS
TPU
L
TS
zz
RS-232
UTS
5
6
3
4
2
3
2
C
L
R
3
1
R
5
5
4
4
3
1
Extron
ASA 121
3
4
PROTEC
NORM
SIGNAL
SYN
RCA Connectors
R
CLIP
NORM
B
50-60H
50-60H
5
6
T
T
PROTEC
CLIP
RS-232
PUTR
754R
AMPLIFIE
POWER
SIGNAL
PANEL
T
PANEL
T
S
PUT
A
B
AUDIO
FRONT
LOCKOU
FRONT
LOCKOU
4
3
OUT
INP
Distributed Sound
System
OUT
L
6
INP
TS
INPU
SYN
APA
5
4
Switcher
A
B
754R
AMPLIFIE
RCA Connectors
232
RCA
A
L5
TS
OU
APA
POWER
AUDIO
6AV
PUT
L
R
232
A RS
RC
6AV
SW T A
TRB
TPU
TPU
OU
OUL
6
Hz
Hz
50-60
50-60
Summing
ExtronAudio
Adapter
ASA 121
754R
APA
AMPLIFIE
POWER
AUDIO
CH
CH
2
1
T
PROTEC
CLIP
NORM
RS-232
SIGNAL
PANEL
T
2' long
A
S
A
1
0
1
FRONT
LOCKOU
Extron
ASA 304
ER
EO
L
L
WER
PO
L
1
2
L
R
1
TP
UT
3
4
2
R
S
Distributed Sound
System
ASA
4
30
E L
AR
SP UNBA
Audio Summing
Adapter
10
1
ST
DIO
AU
AD
QU ING
MM RS
SU IFIE
PL
AM
O OU
3
TS
ON
4
L
BA
2' long
AS
A
MON
INPU
R
Mono Audio
Matrix
R
V
12 MAX
.2A
Audio Summing
Amplifier
FRO
NT
LOC PAN
KOU EL
T
RS-2
32
PRO
TEC
CLIP
T
CH
NOR
M
SIGN
AL
1
CH
2
Video Camera
CD Player
DVD Player
VCR
AUD
IO
AP
A 752
POW
ER
AMP
LIFE
R
Distributed Sound
System
FRO
NT
LOC PAN
KOU EL
T
RS-
232
PRO
TEC
CLIP
T
NOR
M
NAL
SIG
CH
1
CH
2
AUD
IO
AP
A
AMP 75
LIFE2
POW
ER
R
Distributed Sound
5-pin Captive
System
Screw Plug
3.5 mm Stereo
Connector
PANEL DRAWINGS
5-pin Captive
Screw Plug
1
0
1
QUAD AUDIO
SUMMING
AMPLIFIERS
A
S
A
RCA Connector
A
S
A
1
0
1
A
S
A
1
0
1
3.5 mm Stereo
Connector
Extron
ASA 111
L
Audio Summing
STEREO INPUTS
Adapter
MONO OUTPUTS
L
L
POWER
12V
.2A MAX
Audio Summing Adapters
R
R
3
4
SPARE
UNBAL
ON
1
0
1
R
1
2
Extron
ASA 111
1
2
3
4
BAL
Audio Summing
Adapter
ASA 204 (Front)
QUAD AUDIO
SUMMING
AMPLIFIERS
MONO OUTPUTS
STEREO INPUTS
L
L
POWER
12V
.2A MAX
R
R
R
2
3
1
3
2
4
ASA
204
QUAD AUDIO
SUMMING
AMPLIFIERS
Audio Summing
Adapter
POWER
SPARE
UNBAL
ON
12V
.2A MAX
MONO OUTPUTS
STEREO INPUTS
L
1
R
L
3
R
1
3
L
2
R
L
4
R
2
4
ASA
304
SPARE
UNBAL
ON
4
BAL
ASA 204 (Back)
Extron
ASA 131
ASA 304 (Front)
L
1
Audio Summing
Adapter
ASA
204
A
S
A
A
S
A
1
0
1
Extron
ASA 101 & ASA 121
Extron
ASA 131
BAL
ASA 304 (Back)
© 2005 Extron Electronics. All rights reserved. All trademarks mentioned are the property of their respective owners.
05-05
68-1093-01
REV. B