THIS PRODUCT IS NO LONGER IN PRODUCTION
This AGC processor boasts four separate and independent channels of analog audio gain control, which can be used separately for microphone leveling or similar mono applications, or selectively linked for dual-stereo or split mono/stereo program control.
Featuring colorless Class D (PWM) technology for stable and transparent operation, the 264 employs a unique combination of peak and average response to program dynamics, delivering the gain-riding advantage of an intelligent AGC coupled with the tight peak control of a fast limiter.
This combination of long- and short-term level correction normalizes the average-to-peak ratios of diverse audio sources, giving a consistent level of subjective loudness without using excessive, ear-fatiguing compression.
Better than 70dB below the nominal program output level, 20Hz–20kHz.
<0.15% THD, 20Hz–20kHz.
Active-balanced, bridging (XLR) inputs accept nominal program line levels between –15dBu and +15dBu.
The gated-AGC function acts on both the average and the peak program content to normalize input levels between –18dB and +12dB, relative to the nominal, ‘zero-VU’ input setting.
A closed-loop, time-domain limiter restricts program peak values to a level between 0dB and +8dB, relative to the AGC-leveled input signal. Peak control is based on the limiter’s complex response to program dynamics.
A front-panel-adjustable ‘semi-hard’ clipper may be set by the user at any value between 0dB and +8dB, relative to the peak limiter output ceiling. Settings below +8dB will be predicated on acceptable levels of clipping artifacts for the specific program content.
Active-balanced (XLR) outputs; level may be adjusted between 0dBm and +15dBm.
To preserve stereo imaging, gain reduction circuitry may be linked between channels 1 and 2 and/or between channels 3 and 4.
Each channel has an open-collector-transistor output that saturates to ground for a program-loss or out-of-limits condition. Tally outputs may be tied together to create a common alarm.
23” x 16” x 2” (2U); 8 lbs
584mm x 406mm x 51mm ; 3.6 kg