Extron electronic ASA 100 User Manual

Extron
ASA 141

Audio Summing
Adapter

2' long

Ext ron
SW 6AV RCA

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China

+ 86.21.3760.1568 / +4 00.883.1568
+ 86.21.3760.1566 FAX

Japan

+81.3. 3511.7655
+81.3. 3511.7656 FAX

Europe

+31.33 .453.4 040 / +800. 3987.6673
+31.33 .453.4 050 FA X

Dubai

+97 1.4.299 1800
+97 1.4.299 1880 FAX

Asia

+65.6 383.440 0 / +800.7339. 8766
+65.6 383.4664 FAX

China

+ 86.21.3760.1568 / +4 00.883.1568
+ 86.21.3760.1566 FAX

Japan

+81.3. 3511.7655
+81.3. 3511.7656 FAX

Europe

+31.33 .453.4 040 / +800. 3987.6673
+31.33 .453.4 050 FA X

Dubai

+97 1.4.299 1800
+97 1.4.299 1880 FAX

Asia

+65.6 383.440 0 / +800.7339. 8766
+65.6 383.4664 FAX

ASA 100 Series

Passive ASA - Audio Summing Adapters

s ig nA l P ro ce s s o rs

common feAtures

•

Output: Captive screw terminal

•

Resistor network provides passive audio summing

• Compact design for easy installation into small spaces or behind equipment
in a rack

• 2 foot (60 cm) length

descriPtio n

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 summing
stereo signals for use in mono PA systems in churches, halls, arenas, stadiums, and other
environments where stereo signals would result in cancellation. Because they are small and
passive devices, these Audio Summing Adapters are especially useful in systems where power
and space are limited.

The ASA 111, ASA 121, and ASA 131 feature connectivity options for popular stereo sources
such as RCA, stereo mini plug, or captive screw connectors. The ASA 141 features RCA input
connectors while an internal transformer provides a balanced output isolating the signal from
load and preventing ground loops. All ASA 100 series products are designed as 2 foot long
adapters with a resistor network to properly sum stereo signals without signal loss or damage
to source equipment.

Continued

665

www.extron.com

© 2008 Extron Electronics. All rights reserved.
Pricing and specifications may change without notice.

USA West

+1.714.491.1500 / +80 0.633.9876
+1.714.491.1517 FAX

USA East

+1.919.86 3.1794 / +80 0.633.9876
+1.919.86 3.1797 FA X

China

+ 86.21.3760.1568 / +4 00.883.1568
+ 86.21.3760.1566 FAX

Japan

+81.3. 3511.7655
+81.3. 3511.7656 FAX

Europe

+31.33 .453.4 040 / +800. 3987.6673
+31.33 .453.4 050 FA X

Dubai

+97 1.4.299 1800
+97 1.4.299 1880 FAX

Asia

+65.6 383.440 0 / +800.7339. 8766
+65.6 383.4664 FAX

s ig nA l P ro ce s s o rs

ASA 100 Series

ASA 111

Passive ASA - Audio Summing Adapter with Stereo Mini Plug
Input and Unbalanced Output

uni qu e f eAtu re s

•

Converts unbalanced stereo audio to unbalanced mono audio

•

Input: 3.5 mm stereo mini plug

model Version d escriPtio n PArt #

ASA 111 Stereo Mini Plug Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60-738-01

ASA 121

Passive ASA - Audio Summing Adapter with RCA Inputs and
Unbalanced Output

uni qu e f eAtu re s

•

Converts unbalanced stereo audio to unbalanced mono audio

•

Input: Male RCA connectors

model Version d escriPtio n PArt #

ASA 121 RCA Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60-739-01

ASA 131

Passive ASA - Audio Summing Adapter with Captive Screw
Plug Input and Balanced Output

uni qu e f eAtu re s

•

Converts balanced stereo audio to balanced mono audio

•

Input: Captive screw plug

•

Designed for use with Extron products featuring balanced audio outputs on

captive screw connectors

model Version d escriPtio n PArt #

ASA 131 Captive Screw Plug Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60-740-01

ASA 141

Passive ASA - Audio Summing Adapter with RCA Inputs and
Balanced/Unbalanced Output

uni qu e f eAtu re s

•

Converts unbalanced stereo audio to balanced or unbalanced mono audio

•

Input: Male RCA connectors

•

Internal transformer provides balanced output and isolates signal from load to

prevent ground loops

•

Wide frequency response from 20 Hz to 20 kHz

model Version d escriPtio n PArt #

ASA 141 RCA Input; Transformer Balanced . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60-804-01

666

Continued

China

+ 86.21.3760.1568 / +4 00.883.1568
+ 86.21.3760.1566 FAX

Japan

+81.3. 3511.7655
+81.3. 3511.7656 FAX

Europe

+31.33 .453.4 040 / +800. 3987.6673
+31.33 .453.4 050 FA X

Dubai

+97 1.4.299 1800
+97 1.4.299 1880 FAX

Asia

+65.6 383.440 0 / +800.7339. 8766
+65.6 383.4664 FAX

China

+ 86.21.3760.1568 / +4 00.883.1568
+ 86.21.3760.1566 FAX

Japan

+81.3. 3511.7655
+81.3. 3511.7656 FAX

Europe

+31.33 .453.4 040 / +800. 3987.6673
+31.33 .453.4 050 FA X

Dubai

+97 1.4.299 1800
+97 1.4.299 1880 FAX

Asia

+65.6 383.440 0 / +800.7339. 8766
+65.6 383.4664 FAX

ASA 100 Series

s ig nA l P ro ce s s o rs

sPecificAtions

Aud io

Gain

ASA 111, ASA 121 . .. . .. .. . .. .. . See the table below. Tested with an unbalanced output and a 20k ohm load.

ASA 131 . .. . .. .. . .. .. .. . .. .. . .. .. . See the table below. Tested with a balanced output and a 20k ohm load.

ASA 141 . .. . .. .. . .. .. .. . .. .. . .. .. . See the table below. Tested with a 20k ohm output load. Gain numbers are ±2

Frequency response

ASA 111, ASA 121, ASA 131 . . 20 Hz to 20 kHz, ±0.05 dB
ASA 141 with -10 dBV,

+4 dBu, or +15 dBV input . .. .. 20 Hz to 20 kHz, -3 dB to +1 dB

THD + Noise

ASA 111, ASA 121, ASA 131. . .. 0.03% @ 20 Hz to 20 kHz at nominal level

ASA 141

-10 dBV input . . .. .. . .. .. . .. .. .. . . 0.05%, 1 kHz, 1% from 40 Hz to 20 kHz

+4 dBu input . .. . .. .. . .. .. . .. .. . . 0.05%, 1 kHz, 1% from 50 Hz to 20 kHz

+15 dBV input . .. .. . .. .. . .. .. .. . . 0.05%, 1 kHz, 1% from 80 Hz to 20 kHz

S/N .. .. . .. .. . .. .. .. . .. .. . .. .. . .. .. . . 130 dB at maximum output

Aud io in Put

Number/signal type

ASA 111, ASA 121, ASA 141 .. .. 1 stereo, unbalanced

ASA 131 .. . .. .. . .. .. . .. .. . .. .. .. . .. 1 stereo, balanced

Connectors

ASA 111 .. . .. .. . .. .. . .. .. . .. .. .. . .. (1) 3.5 mm male stereo mini plug (tip-ring-sleeve)

ASA 121, ASA 141 .. . .. .. . .. .. . .. 1 pair of male RCA (tip-ring)

ASA 131 .. . .. .. . .. .. . .. .. . .. .. .. . .. (1) 3.5 mm captive screw connector, 5-pole

Impedance

ASA 111, ASA 121 .. . .. .. . .. .. . .. 22k ohms (with a 20k ohm unbalanced load, one input terminated);

ASA 131 .. . .. .. . .. .. . .. .. . .. .. .. . .. 24k ohms (with a 20k ohm balanced load, one input terminated);

ASA 141 .. . .. .. . .. .. . .. .. . .. .. .. . .. 5.4k ohms (with a 20k ohm balanced load, both inputs terminated)

Nominal level

ASA 111, ASA 121 .. . .. .. . .. .. . .. -10 dBV (316 mVrms)

ASA 131 .. . .. .. . .. .. . .. .. . .. .. .. . .. +4 dBu (1.23 Vrms)

ASA 141 .. . .. .. . .. .. . .. .. . .. .. .. . .. -10 dBV (316 mVrms) or +4 dBu (1.23 Vrms)

Maximum level

ASA 111, ASA 121, ASA 131 . . +24 dBu (12.3 V)

ASA 141 .. . .. .. . .. .. . .. .. . .. .. .. . .. +15 dBV (5.6 V)

NOTE 0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu

Input Channel

Left Right

signal signal -1 dB
signal —* -7 dB

—* signal -7 dB

* Tested with this input remaining connected.

Output

dB.

Input Channel Output Wiring

Left Right Unbalanced Balanced

0 dB 0 dB +3 dB -3 dB
0 dB open +3 dB -3 dB
0 dB 50 ohms -3 dB -9 dB

* Tested with this input remaining connected.

4k ohms (with a 20k ohm unbalanced load, both inputs terminated)

7k ohms (with a 20k ohm balanced load, both inputs terminated)

Aud io ou tPu t

Number/signal type

ASA 111, ASA 121 .. . .. .. . .. .. . .. 1 mono, unbalanced

ASA 131 .. . .. .. . .. .. . .. .. . .. .. .. . .. 1 mono, balanced

ASA 141 .. . .. .. . .. .. . .. .. . .. .. .. . .. 1 transformer, mono, balanced/unbalanced

Connectors . .. .. . .. .. . .. .. . .. .. .. . (1) 3.5 mm direct insertion captive screw connector, 3 pole

Impedance (with 50 ohm input impedance)

ASA 111, ASA 121 .. . .. .. . .. .. . .. 1k ohms unbalanced

ASA 131 .. . .. .. . .. .. . .. .. . .. .. .. . .. 2k ohms balanced

ASA 141 .. . .. .. . .. .. . .. .. . .. .. .. . .. 3.3k ohms balanced (typical)

Nominal level

ASA 111, ASA 121 .. . .. .. . .. .. . .. -10 dBV (316 mV)

ASA 131 .. . .. .. . .. .. . .. .. . .. .. .. . .. +4 dBu (1.23 V)

ASA 141 .. . .. .. . .. .. . .. .. . .. .. .. . .. -10 dBV (316 mV) or +4 dBu (1.23 V)

Maximum level

ASA 111, ASA 121, ASA 131 .. .. +24 dBu (12.3 V)

ASA 141 .. . .. .. . .. .. . .. .. . .. .. .. . .. +15 dBV (5.6 V)

GEN ERAL

Power . .. . .. .. . .. .. .. . .. .. . .. .. . .. .. Not powered

Temperature/humidity . .. .. . .. .. Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing

Rack mount . .. . .. .. . .. .. . .. .. . .. . Can be attached to any flat surface with supplied Velcro

Enclosure type .. .. .. . .. .. . .. .. . .. Molded plastic

Enclosure dimensions

ASA 111, ASA 121, ASA 131 . . 0.7” H x 0.7” W x 1.3” D

ASA 141 .. . .. .. . .. .. . .. .. . .. .. .. . .. 1.1” H x 1.1” W x 1.6” D

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%. Specifications are subject to change without notice.

Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing

1.8 cm H x 1.7 cm W x 3.4 cm D
(Depth excludes the 24 inch long pigtail for ASA 121 and the 24 inch long single
cable for the ASA 111 and ASA 131.)

2.8 cm H x 2.8 cm W x 4.0 cm D
(Depth excludes the 24 inch long pigtail.)

®

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