Boulder Amplifiers 101 Stereo Amplifier User Manual


 
7
Model 101 Specifications
GAIN RANGE
Mic input 5dB steps 10-60dB
Mic input 5dB steps High gain version 20-70dB
Hi-Z input 5dB steps -10-40dB
Hi-Z input 5dB steps High gain verzsion 0-50dB
Output trim attenuator 0 to -10dB
THD+N
@20dB Gain +20dBu out <0.00085%
@40dB Gain +20dBu out <0.0010%
@60dB Gain +20dBu out <0.0050%
IMD (SMPTE/DIN 4:1 7kHz/50Hz)
@40dB Gain +20dBu out <0.0020
NOISE (EIN)
50 Ohm source <-130dB
150 Ohm source <-128dB
600 Ohm source <-124dB
CMRR
100Hz >68dB
1kHz >75dB
10kHz >65dB
PHASE DEVIATION (HPF off)
50Hz-25kHz <6 degrees
FREQUENCY RESPONSE
Mic input @40dB Gain -3dB 4.5Hz-400kHz
Mic input @40dB Gain -0.5dB 12Hz-170kHz
Hi-Z input @20dB Gain -3dB 3.0Hz-300kHz
Hi-Z input @40dB Gain -0.5dB 7.5Hz-300kHz
IMPEDANCE
Mic input 1600 Ohms
Hi-Z input (unbalanced) 1.0M Ohms
Hi-Z input (balanced) 2.0M Ohms
PEAK LED METER
Green threshold -20dBu
Red threshold +16dBu
MAXIMUM OUTPUT LEVEL
100k Ohm load, 0.1% THD +25dBu
CROSSTALK None!