Atlas ASL, AST, ASL-4, ASL-6, AST-4 Quick Manual

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1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A. TELEPHONE: (800) 876-3333 / FAX (800) 765-3435

AtlasSound.com

Specifications subject to change without notice

281

FOUR

IMPEDANCE-MATCHING

LOUDSPEAKER SWITCHING SYSTEMS

ASL Series AST Series

SPEAKER POWER HANDLING VOLUME WIRE WEIGHT

MODEL CAPACITY *CONT. AUDIO CONTROLS CAPACITY LBS / KGS. ASL-4 4 Pair 70-Watts RMS 210-Watts 4 12 to 24 ga. 9 lbs. / 4.1kgs. ASL-6 6 Pair 70-Watts RMS 210-Watts 6 12 to 24 ga. 10.5 lbs. / 4.7kgs. AST-4 4 Pair 40-Watts RMS 120-Watts N/A 12 to 24 ga. 6 lbs. / 2.7kgs. AST-6 6 Pair 40-Watts RMS 120-Watts N/A 12 to 24 ga. 6.5 lbs. / 2.9kgs.

FEATURES

• Automatic Impedance-Matching and On/Off Push-Button Control

• Dual-Amplified Source Switching Capability

• Control of Four or Six Speaker Pairs in Multi-Room or Surround Sound Applications

• Choice of Models with Individual Loudspeaker Controls for Volume and Source Selection or System-Wide Source Selection Only

• Compact, Low-depth Size is Perfect for Shelf or Rack Mounting

APPLICATIONS

These dual-amplified source, impedance-matching loudspeaker switching systems provide control of up to four (ASL-4, AST-4) or six (ASL-6, AST-6) loudspeaker pairs positioned in multiple room configurations. Units are designed to be used with one or two stereo amplifiers. This enables the user to access different program material (system Aor B) or customize a configuration.

GENERAL DESCRIPTION

The ASL and AST Series loudspeaker systems include an impedance protection circuit that operates in pairs, allowing each set of loudspeakers to operate directly and simultaneously from the amplifier for maximum efficiency. The left and right channels are completely isolated for protected operation. Models are 17" W x 15⁄8

" H x 5

⁄8

" D (432 x 41 x 149mm) and can be shelf or 19" rack-mounted, with supplied brackets. All switcher models feature Euro-style screw terminals that will facilitate 12 to 24 ga. wire, push-button on/off controls for each connection, and attractive mar-resistant black finish. ASL Series are equipped with frontmounted volume controls and push-button A-B selector switches for each loudspeaker pair connection (four or six). AST Series provides for overall A-B system selection, but does not include volume controls.

ASL Series. Models ASL-4 and ASL-6 are designed to provide switching and volume control of up to four or six loudspeaker pairs respectively, and will accommodate any combination of loudspeakers with 4, 8, and/or 16 ohm impedance. ASL Series features an independent on/off switch, volume control, and A-B source selector switch for each loudspeaker pair. Volume controls are equipped with heat-reducing transformers; recognized for dependable operation in a closed environment. Attenuation is accomplished in eight steps; six steps of 3dB, one 6dB step and an off step. (Note: attenuators are employed and pre-set to guard against system overload so that when positioned at maximum volume; the full power of the source amplifier is divided equally among each of the loudspeaker pairs.) Models have a power handling capacity of 70-watts RMS* / 210-watts audio.

AST Series. Models AST-4 and AST-6 provide for switching control of up to four and six loudspeaker pairs respectively, and will accommodate any combination of 8 and/or 16 ohm loudspeakers. Model AST-6 also features a switch for safe connection of 4 ohm loudspeakers. AST devices include separate on/off controls for each loudspeaker pair and one A-B source selector switch for overall system control. Loudspeaker volume can be adjusted using individual room volume controls such as the Atlas Sound DAT-8 or SAT-8 Series (not included). AST Series has a power handling capacity of 40-watts RMS* / 120-watts audio.

ASL SERIES

* Per channel, 8 ohm load, single room (measured @50Hz continuous)

ASL-4

( Shown With Rack-Mounting Brackets Attached )

ASL-6

( Shown With Rack-Mounting Brackets Attached )

AST-4

( Shown Without Rack-Mounting Brackets )

AST-6

( Shown Without Rack-Mounting Brackets )

AST SERIES

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1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A. TELEPHONE: (800) 876-3333 / FAX (800) 765-3435

AtlasSound.com

Specifications subject to change without notice

* Per channel, 8 ohm load, single room (measured @50Hz continuous)

ASL-6

L+L-R- R+

L+L-R- R+ L+L- R- R+ L+L-R- R+ L+L- R- R+ L+L- R-R+ L+L-R- R+ L+L- R-R+

ATLAS SOUND ENNIS,TEXAS

MADE IN U.S.A.

SPEAKERS

6-1

AMPLIFIERS IN

B/A

ASL-4

L+L-R- R+ L+L- R-R+ L+ L-R- R+ L+ L-R- R+ L+L- R-R+ L+L-R- R+

ATLAS SOUND ENNIS,TEXAS

MADE IN U.S.A.

SPEAKERS

4-1

AMPLIFIERS IN

B/A

AST-6

R+R- L- L+ R+R- L-L+ R+R- L- L+ R+R- L- L+ R+R- L- L+ R+R- L- L+ R+R- L- L+ R+R- L- L+

ATLAS SOUND ENNIS,TEXAS

MADE IN U.S.A.

SPEAKERS

6-1

AMPLIFIERS IN

B/A

AST-4

R+R- L- L+ R+R- L-L+ R+R- L-L+ R+R- L- L+ R+R- L-L+ R+R- L-L+

ATLAS SOUND ENNIS,TEXAS

MADE IN U.S.A.

AMPLIFIERS IN

A/B

SPEAKERS

4-1

4321BA

AB4321

654321BA

21BA

ARCHITECT AND ENGINEER SPECIFICATIONS

The impedance-matching loudspeaker switching system shall be Atlas Sound Model _________ (ASL-4, ASL-6, AST-4, or AST-6). System shall provide on/off control of up to ____ (four or six) loudspeaker pairs and shall accommodate one or two stereo amplifiers, or four channels of a surround-sound system. Units shall be 17"W x 1

⁄8"H x

⁄8"D (432 x 41 x 149mm), and facilitate shelf or rack mounting. Units shall include spring-loaded terminals capable of accepting 12 - 24 ga. wire for loudspeaker connection and a ___foot power cord.

ASL Series shall have a continuous power handling capacity of 70watts RMS* / 210-watts audio. Models shall be equipped with separate on/off switches, 9-position attenuators, and A-B selector switches

for each loudspeaker connection. ASL Series shall facilitate up to _____ (four or six) pair of 4, 8, and/or 16 ohm loudspeakers in any combination.

AST Series shall have a continuous power handling capacity of 40watts RMS* / 120-watts audio. Models shall be equipped with separate on/off switches for each loudspeaker pair and a single A-B switch for overall system selection. Model AST-4 shall accommodate up to four pair of 8 and/or 16 ohm loudspeakers in any combination. Model AST-6 shall provide for the connection of 4, 8, and/or 16 ohm loudspeakers in any combination.