UNIVERSAL AUDIO Model 175 B LIMITING AMPLIFIER
6
PERFORMANCE SPECIFICATIONS
FREQUENCY RESPONCE:
Without limiting: ± 1 dB, from 20 cps t0 20 kc
With 5 dB limiting: ± 1 dB, from 20 cps t0 20 kc
MAXIMUM POWER OUTPUT
After output attenuator with limiting switch off to prevent limiting at +24 dBm
less than 1% THD from 50 cps to 15 kc.
GAIN
Jumper in low gain position: 24 dB
Jumper in high gain position 37 dB
MINIMUM INPUT LEVEL TO ACCOMPLISH LIMITING
Jumper in low gain position: -24 dBm
Jumper in high gain position: -24 dBm
MAXIMUM OUTPUT AT THERSHOLD OF LIMITING: +13 dBm
INPUT AND OUTPUT IMPEDANCE: 600 ohms, unbalanced
SIGNAL TO NOISE RATIO: 80 dB
COMPRESSION RATIO (above threshold of limiting): 12 to 1
ATTACK TIME: Adjustable from 100 to 1000 microseconds
REALEASE TIME: Adjustable from 27 to 527 milliseconds
TUBE COMPLEMENT: One each, 6BC8, 12AX7, 12BH7, 6AL5, 0B2, GZ34
DIMENSIONS: Width: 19 inches
Height: 3-1/2 inches
Depth: 9-1/4 inches
WEIGHT: 17 pounds
