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Peak Limiting with AGC Action |
Very Low Noise (-75 dBu S/N Ratio) |
30Hz-15KHz Frequency Response |
Standard 0dBu 775 mV rms Output |
Better than 1 mS Attack Time |
Very Low Distortion (0.2% at Limiting) |
Selectable Pre-emphasis (50uS/75uS/none) |
Compression Level Indication Via 3 LED's |
Accepts Audio Inputs up to +24dBu 12Vrms |
Single Supply Operation 11-16V DC |
The circuit operates the audio gain around 3 individual time constants. These control a smooth AGC (Automatic Gain Control) combined with a very fast attack on audio signal peaks. Audio compression and output level are constant for input levels between -6dBu and +24dBu. This kit also contains selectable Pre-emphasis.
In any sound broadcasting system the audio level must be controlled to prevent over modulation. The current trend is for broadcast stations to transmit a constant level of audio optimised to 100%. This gives the listener 'loud' audio and prevents constant re-adjustment on the receiver volume control. The Aareff Limiter Compressor is specifically designed to achieve constant 100% modulation without any over modulation using a FM Transmitter. The result is a professional sound on your station output with all music and speech inputs. NOTE: STEREO REQUIRES TWO UNITS