SPECIFICATIONS (Cont’d)
Input/Output:
Distortion:
Below compression threshold, under 0.5% THD at
+15 dBm output, 30-20 kHz.
At 10 dB compression, under 1% THD at +15 dBm
output, Response Rate set to 7, 50-20 kHz. With Re-
sponse Rate set to 0 (fast), under 2% THD at 50 Hz.
At 1 kHz, under 0.8% THD at any level of compres-
sion from 0 to 40 dB.
Compression Ratio:
8:1 minimum from 10 to 20 db compression.
5:1 minimum from 10 to 30 dB compression.
Compression Threshold:
Microphone: -96 dBV at maximum input gain.
Line: -48 dBV at maximum input gain.
Recovery Time:
Time required for gain to reach 90% of its final value
when input is reduced by 10 dB from 20 dB com-
pression is adjustable from approximately 100 milli-
seconds to 8 seconds by Response Rate control.
Attack Time:
Same as recovery time for increases up to 12 dB.
Maintains peak to average ratio at 12 dB (sine-wave
equivalent).
Gated Memory:
In “hold” condition, less than 20 dB gain recovery
after 1 minute.
Tone Oscillator:
1.0 kHz ± 10%, THD under 1%.
Input Control Interaction:
Under 0.1 dB with any combination, mix bus jack
open. Under 1.5 dB with mix bus terminated in 50 K
ohms or less.
Lo-cut Filters:
-6 dB per octave, 3 dB down at approximately 150
Hz.
4
Mix bus:
Impedance 3.9 K ohms. Gain (through 3.9 K ohms)
from mix bus to line output, is 63 dB. Gain from micro-
phone input to mix bus is 26 dB (terminated in 3.9 K
ohms). Overall gain drops by 10 dB with mix bus
terminated.
Circuit Protection:
Shorting the outputs, even for prolonged periods, will
not damage the unit.
Microphone inputs will not be damaged by signals
of up to 3 volts.
Temperature Range:
Operating:
-18°C (0°F) to 57°C (135°F).
Storage:
-29°C (-20°F) to 74°C (165°F).
Weight:
9 Ibs., 13½ oz. (4.5 kg) with batteries and line cord.
Operating Voltage:
AC Operation:
108-132 volts, 50/60 Hz (SE30 only).
108-132 or 216-264 volts, 50/60 Hz (SE30-2E
only).
DC Operation:
30 volts ± 20%.
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