FP-ALC2 RADIO DESIGN LABS, FP-ALC2 Datasheet

FP-ALC2

Manufacturer Part Number

FP-ALC2

Description

RDL STEREO AUTOMATIC LEVEL CONTROL, POWER REQUIREMENTS: 24 VDC, 80 MA, IMPEDANCE: 10 KOHM, CONNECTOR TYPE: RCA FEMALE, FEATURES: IT MAINTAINS CONSISTENT -10 DBV OUTPUT FOR INPUT SIGNAL VARIATIONS AS GREAT AS 25 DB

Manufacturer

RADIO DESIGN LABS

Datasheet

1.FP-ALC2.pdf (2 pages)

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FLAT-PAK

Model FP-ALC2

Automatic Level Control

ANYWHERE YOU NEED...

•

You Need The FP-ALC2!

The FP-ALC2 is part of the group of versatile FLAT-PAK products from Radio Design Labs. The unique FLAT-PAK

case can be directly screwed or bolted to cabinets or shelves. Optionally available rack-mounting accessories permit

single or multiple FLAT-PAK module mounting. All FLAT-PAK modules are supplied with a power interconnect cable

for daisy-chaining multiple modules from a single power supply.

APPLICATION: The FP-ALC2 is the ideal choice in many applications where consistent stereo audio levels are

needed from consumer sources with varying audio output levels. Power connections are made using either the full-size

barrier block terminals or a dc power jack located in one end panel. A second dc power jack is provided on the other

end panel for connecting additional FLAT-PAK modules.

The FP-ALC2 is a two channel (stereo) module featuring phono jack INPUTS and OUTPUTS. A single user

adjustment makes installation simple and efficient. The gain adjustment is set as high as possible with the loudest

source without the INPUT OVERLOAD indicator flashing. No further adjustments are needed. Foreground as well as

background sound systems fed from variable audio source levels, such as multiple CD changers or satellite receivers,

benefit from consistent levels.

The automatic level control circuitry in the FP-ALC2 maintains a consistent –10 dBV output for input signal variations as

great as 25 dB. Yet the operation of the module is nearly transparent to the listener for a wide variety of source

material from rock to classical. The level pumping effect frequently associated with automatic gain and compression

devices is minimized in the FP-ALC2 by controlling mid and high band audio separately from the bass frequencies. The

automatic gain circuitry and compression attack release times adjust according to the program material to further

reduce any audible effects of the module. The level seeking effect also associated with various automatic level

products is avoided in the FP-ALC2. When audio levels fall and remain below a level appropriate to that source, the

module stops increasing the gain. As audio levels fade out, the module tracks the level for a natural sound. These

features combine to produce nearly inaudible adjustment yet consistent levels without the listener fatigue associated

heavily compressed music dynamics.

The FP-ALC2’s low profile and compact size permit mounting in confined spaces and in various locations in equipment

racks. The location of the input/output jacks permits high density mounting against flat surfaces while maintaining

accessibility to the connectors. The economical cost can provide assurance of correct signal levels in nearly any stereo

audio system. The FP-ALC2 may be mounted where needed, to rack sides or in an equipment rack (either the front or

rear rack rails) using the RDL FP-RRA. Use the FP-ALC2 individually, or combine it with other RDL products as part of

a complete audio/video system.

Consistent Levels from Variable Sources

Split-Band AGC for Audio Transparency

Self-Adjusting Attack and Release Times

AGC with Simple Single Control Setup

Level Control Range >20 dB

Gated Control to Avoid Level “Seeking”

Convenience of RDL FLAT-PAKs

RDL

•

™

659 N. 6

SERIES

St.

•

Prescott, AZ., USA 86301

•

(928) 443-9391

•

FAX (928) 443-9392

•

www.rdlnet.com

Related parts for FP-ALC2

FP-ALC2 Summary of contents

Page 1

... The economical cost can provide assurance of correct signal levels in nearly any stereo audio system. The FP-ALC2 may be mounted where needed, to rack sides equipment rack (either the front or rear rack rails) using the RDL FP-RRA. Use the FP-ALC2 individually, or combine it with other RDL products as part of a complete audio/video system. • ...

Page 2

... FLAT-PAK ™ SERIES Model FP-ALC2 Automatic Level Control GAIN INPUT OVERLOAD OR 24 VDC INPUTS POWER SOURCE UNBALANCED STEREO SOURCE TYPICAL PERFORMANCE Inputs (2): Input Level: Output: Output Level: Automatic Level Range: Gate Threshold: Frequency Response (excluding AGC kHz (+/- 0.5 dB) THD+N (excluding AGC): ...

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