Frequency Response
±0.5dB, 20Hz–20kHz.
Noise
Better than 80dB below 100% modulation, 10Hz–20kHz.
Distortion
(With full AGC correction and “subjective” adjustments centered)
<0.25% THD, 1kHz–20kHz; <0.5% THD, 250Hz–20kHz; <1% THD, 20Hz–20kHz.
Crosstalk
Better than 65dB, 10Hz–20kHz.
Active-balanced, bridging; accept nominal line levels between –20dBu and +10dBu.
Outputs
Active-balanced, 600-ohm resistive source; deliver 0dBm to +15dBm into 600 ohms.
Gated AGC
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Gating inhibits AGC “hunting” and compression release during brief pauses in the program.
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The gating threshold is frequency-weighted and fixed at –25dB, relative to the corrected program level.
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AGC corrects input level variations over a ±12dB range.
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AGC response to program content is quasi-peak, conforming to the 10ms UK/EBU “PPM” characteristic.
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Conversely, the slow correction rate is variable between 0.25 and 1.0 dB-per-second.
3-Band Compressor/Limiter
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Compression and Limiting share common gain control circuits in each of the three frequency bands. The two functions are separated by a time-domain, “floating platform” attack/release characteristic.
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The spectrum is divided with a LOW/MID crossover at 200Hz (795μs), and a MID/HIGH crossover at 2120Hz (75μs) or 3180Hz (50μs).
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A high frequency “activity detector” monitors dynamics at the upper program frequencies to determine an optimum limiting/clipping ratio.
Power Requirement
105–130VAC or 210–255VAC, 50/60Hz; 12W.
Size and Weight
31/2”H x 19”W x 7”D (2U); 10 lbs.
