Maximum level
ASA Audio Summing Adapters
(ASA 111, ASA 121, ASA 131, ASA 141)
ASA 111, 121, 131 ................... +24 dBu (12.3 V)
ASA 141 ................................... +15 dBu (5.6 V)
The Extron ASA audio summing adapters sum left and right stereo audio signals into
mono signals for distributed sound and other applications that require mono sound.
The ASA 111 and ASA 121 output an unbalanced audio signal only. The ASA 131
outputs a balanced audio signal. The ASA 141 outputs a balanced or unbalanced audio
signal.
0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV 2 dBu
Audio output
Number/ signal type
ASA 111, ASA 121 .................. 1 unbalanced mono
ASA 131 ................................... 1 balanced mono
ASA 141 ................................... 1 transformer balanced/ unbalanced mono
Connectors ................................... (1) 3.5 mm direct insertion captive screw connector, 3 pole
Impedance (with 50 ohm input impedance)
ASA 111
N C
1
4
ASA 101 ................................... 75 ohms unbalanced, 150 ohms balanced
ASA 111, 121 ........................... 1k ohm unbalanced
ASA 131 ................................... 2k ohms balanced
ASA 141 ................................... 3.3k ohms balanced (typical)
Nominal level
ASA 121, ASA 141
2
NOTE This connector
is slightly smaller
on the ASA 121.
4
4
ASA 131
ASA 111, 121 ........................... -10 dBV (316 mV)
ASA 131 ................................... +4 dBu (1.23 V)
ASA 141 ................................... +15 dBu (5.6 V)
Maximum level
N C
3
ASA 111, 121, 131 ................... +24 dBu (12.3 V)
ASA 141 ................................... +15 dBu (5.6 V)
Ring
Tip
Sleeve(s)
Ring
Model
Input
connector
Input
signal
Output
connector
Output
signal
Tip
General
ASA 111 3.5 mm
Unbalanced 3-pin captive Unbalanced
stereo
ASA 131
Balanced
Input
2
Power ............................................ Not powered
mini
plug
screw
mono (only)
1
4a
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 .................................. Can be attached to any flat surface with supplied Velcro®
(2 pins
are used)
Sleeve
No connection
Tip
ASA 121 2 RCAs
Unbalanced 3-pin captive Unbalanced
stereo
ASA 111,
ASA 121,
ASA 141
screw
mono (only)
4a
2
4a
Enclosure type ............................. Molded plastic
(2 pins
Enclosure dimensions
Unbalanced
Output
are used)
ASA 111, 121, 131 ................... 0.7" H x 0.7" W x 1.3" D
1.8 cm H x 1.7 cm W x 3.4 cm D
ASA 131 5-pin
captive
Balanced
stereo
3-pin
Balanced
mono (only)
(Depth excludes the 24 inch long pigtail for ASA 121, and the
24 inch long single cable for the ASA 111 and ASA 131.)
Sleeve
Ring
Tip
captive
screw
3
2
4b
screw
ASA 141 ................................... 1.1" H x 1.1" W x 1.6" D
2.8 cm H x 2.8 cm W x 4.0 cm D
ASA 131,
ASA 141 2 RCAs
Unbalanced 3-pin captive Balanced/
stereo
4b
ASA 141
Balanced
Output
screw
unbalanced
mono
(Depth excludes the 24 inch long pigtail)
4a 4b
Product weight ............................ 0.2 lbs (0.1 kg)
Shipping weight .......................... 1 lb (1 kg)
ASA 141 unbalanced output — Do not short the negative (-) terminal to
ground (Gnd).
Vibration ....................................... ISTA 1A in carton (International Safe Transit Association)
Listings .......................................... UL, CUL
The ASA 131 supports the wiring scheme used by Extron products that output
audio on 5-pole captive screw connectors.
Compliances ................................. CE, FCC Class A, VCCI, AS/ NZS, ICES
MTBF ............................................. 30,000 hours
Warranty ....................................... 3 years parts and labor
All nominal levels are at ±10%.
Extron Electronics, USA
1230 South Lewis Street
Anaheim, CA 92805
USA
Extron Electronics, Europe
Beeldschermweg 6C
3821 AH Amersfoort
The Netherlands
+31.33.453.4040
Fax +31.33.453.4050
Extron Electronics, Asia
135 Joo Seng Road, #04-01
PM Industrial Building
Singapore 368363
+65.6383.4400
Fax +65.6383.4664
Extron Electronics, Japan
Kyodo Building
16 Ichibancho
Chiyoda-ku, Tokyo 102-0082 Japan
+81.3.3511.7655
Fax +81.3.3511.7656
Specifications are subject to change without notice.
68-1150-01
Rev. C
714.491.1500
11 06
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