Specifications - BBE 401 User Manual

Specifications
Frequency Response
Bypass
Process Mode
Noise in Process Mode
gain control to maximum
gain control to minimum
Total Harmonic Distortion
in Process Mode
Input Characteristics
Input Impedence
Nominal Input Range
Maximum Input Level
Gain Control
Hl-Z IN to Hl-Z OUT
LO-Z IN to LO-Z OUT
Lo Contour Control
Maximum
Minimum
(Note: middle position is flat)
DC to 20kHz
program controlled
-85dBu
- lOOdBu
less than 0.1% @ 1kHz @ - lOdBu, Hl-Z IN
LINE Input: 47K ohms
Hl-Z Input: 470K ohms
LO-Z Input: 1K ohms
LINE Input: -lOdBu
Hl-Z Input:
-20dBU
LO-Z Imput; -40dBu
LINE Input; -1-16dBu (input clip point)
Maximum; -20dBu below input
Minimum; + lOdBu above input
Maximum; -26dBu below input
Minimum;
■f 4dBu above input
+10dBu above input at 50Hz
- lOdBu below input at 50Hz
Phantom Power
-1-24 volts DC on pins 2 and 3 of LO-Z IN connector; pin 1 is common,
(Note: If Phantom Power exists at the LO-Z OUT connector of the BBE 401 and is greater than the -i- 24 volts DC already
present at the LO-Z IN connector it will automatically be fed through to the LO-Z IN connector allowing the use of a
condenser microphone that requires larger voltage, typically -i-48 volts DC.)
Power Requirements
120 VAC (nominal) 50/60 Hz 8 Watts (220 VAC available)
A/C Line fused protected
Dimensions
1 3/4" H
X
17" W
X
5 3/4" D Standard 1U Single Rack
Weight
4 1/2 lbs. (2.5 Kgs)
NOTE; OdBu = 0.775Vrms
Calibration Procedure for the BBE Model 401
For serial numbers CXXXXX
Equipment Required:
1. DVM (digital voltmeter).
2. Signal source (audio frequencies, sine wave).
3. Low impedance, balanced source (input and output for LO-Z).
Initial Settings:
1. Definition control (VR3) to minimum.
2. LO CONTOUR (VR7), VR@ and VR5 to their middle positions.
3. GAIN (VR1) to maximum.
4. Function button IN and POWER on.