The FP-ALC1 is the ideal choice in many applications where consistent monoaudio levels are needed from professional sources with varying audio output levels. Power connections are made using either the full-size barrier block or a dcpowerjack located in one end panel.
The FP-ALC1 is a single channel (mono) module featuring a detachable terminal block for the input and output. 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. Sound systems fed from variable audio source levels, such as multipleCD changers, satellite receivers or paging sources benefit from consistent levels.
Common FP-ALC1 applications include paging outputs from telephone systems, music-on-hold feeds for telephone systems, background or foreground amplifier inputs in sound systems, voice feeds in communications/intercom systems.
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
Input: 10 kΩ balancedbridging (may be
Input Level: +4 dBu (nominal)
Output: 150 Ω balanced (may be connected
Output Level: +4 dBu
Automatic Level Range: -16 to +14 dBu
GateThreshold: -18 dBu (20 Hz to 3 kHz)
Frequency Response (excluding AGC): 20 Hz to 20 kHz (+/- 0.75 dB)
THD+N (excluding AGC): < 0.15% (20 Hz to 20 kHz)
Noise: < -90 dB (below +4 dBu output)
Headroom: > 18 dB
Indicator (1): INPUT OVERLOAD
Power Requirement: GROUND-REFERENCED, 24 Vdc @ 80 mA
Radio Design Labs - RDL FP-ALC1 Automatic Level Control - Mono - Terminal Block
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