Extron electronics ASA Series User Manual

ASA 204 and ASA 304 • User Guide
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 two models:
ASA 204 — The ASA 204 has four independent active summing amps with four pairs of RCA connectors for
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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.
Features
• Four, independent active audio summing amplifiers in a single enclosure
• Stereo inputs on RCA connectors, mono output on captive screw connectors
• Converts stereo audio to balanced or unbalanced mono audio
±6 dB output gain switch
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• Rack-mountable 1U, quarter rack width metal enclosure
• Extron Everlast Power Supply (included) is covered by a 7-year parts and labor warranty

Installation and Operation

Mounting the ASA 204 and ASA 304

The ASA 204 and ASA 304 can be set on a table, or mounted on a rack shelf, under a desk or tabletop, or on a projector
mount.

Tabletop placement

Attach the four provided rubber feet to the bottom of the unit and place it on a convenient tabletop location.

Rack mounting

For optional rack mounting, do not install the rubber feet. Mount the ASA on a 19" 1U rack shelf or a standard universal
1U rack shelf. On the standard rack shelf, the ASA mounts in one of four locations to the rear of the rack or in one of four
locations to the front of the rack.
1. Remove rubber feet if they were previously installed on the
bottom of the ASA.
2. Mount the ASA on the rack shelf, using two 4-40 x 3/16"
screws in opposite (diagonal) corners to secure the amplifier
to the shelf.
3. Install blank panels or other units on the rack shelf (see the
image on the right).
Attach the rack shelf to the rack using the supplied bolts.
4.
NOTE: Most 1U rack-mountable Extron products can be
mounted on the standard shelf.
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