Extron Electronics ASA Series User Manual
Page 5
ASA Series • Introduction
ASA Series • Introduction
Introduction
About the ASA Series
The Extron ASA series high-performance audio summing
amplifiers convert stereo audio signals into balanced or
unbalanced mono signals. The series consists of the following
three models:
ASA 101
— The ASA 101 is a single, ultra-compact passive
summing adapter with two male RCA pigtail connectors
for one unbalanced stereo audio input. The unit has one
3-pole captive screw connector for one balanced or
unbalanced mono output.
ASA 204
— The ASA 204 has four independent active
summing amps with four pairs of RCA connectors for
unbalanced line level stereo audio inputs. The unit has
captive screw connectors for four balanced or unbalanced
mono outputs. Because of its input/output configuration,
the ASA 204 can also function as an unbalanced to
balanced audio converter.
ASA 304
— The ASA 304 has four independent active
summing amps with four 5-pole captive screw connectors
for balanced or unbalanced line level stereo audio inputs.
The unit has captive screw connectors for four balanced or
unbalanced mono outputs.
The ASA 204 and ASA 304 include an external 12V power
supply that accepts 100-240VAC input. The ASA 101 is a passive
device that does not need a power supply.
Features
Four summing amps in one box
— The ASA 204 and ASA 304
can accommodate up to four stereo source devices,
eliminating the need for four separate summing
amplifiers.
Furniture, projector, and rack mountability
— The ASA 204
and ASA 304 can be mounted under a desk, podium, or
other furniture, or secured to a projector mount with
optional brackets. Alternatively, they can be mounted on
an optional VersaTools™ or universal rack shelf. The
ASA 101 can be mounted in many convenient spaces
using the supplied double-sided Velcro
®
tape.
DIP switch selectable audio gain
— Each ASA 204 and ASA 304
has a DIP switch that can be set to achieve unity gain with
either balanced or unbalanced output wiring, or ±6dB for
level shifting.
1-2
Extron
ASA 101
Audio Summing
Adapter
2' long
Mono Distributed Sound
System
Ceiling Speakers
10
0-2
40
V
1.3
A
50
-60
Hz
RS
23
2
10
0-2
40
V
1.3
A
50
-60
Hz
SW
6A
V R
CA
L
R
OU
TP
UT
A
OU
TP
UT
B
L
R
OU
TP
UT
S
SY
NC
1
2
3
4
5
6
A
B
5
3
4
L
R
5
2
1
3
4
6
IN
PU
TS
IN
PU
TS
Extron
SW 6AV RCA
Switcher
Figure 1-1 — Typical ASA 101 application
PO
W
ER
12
V
.2A
M
AX
ST
ER
EO
IN
PU
TS
MO
NO
OU
TP
UT
S
BA
L
UN
BA
L
ON
SP
AR
E
3
1
4
2
4
3
2
1
L
QU
AD
AU
DIO
SU
MM
ING
AM
PL
IFIE
RS
R
AS
A
2 0
4
L
L
R
R
DVD Player
VCR
Video Camera
Mono Audio
Matrix
CD Player
Extron
ASA 204
Audio Summing
Amplifier
Audio
Amplifier
Zone 2 Ceiling
Speakers
Zone 1 Ceiling
Speakers
Program
Speakers
Distributed Sound
System
Distributed Sound
System
Figure 1-2 — Typical ASA 204 application
1-3