Model 101, Specifications – Boulder Amplifiers 101 User Manual

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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!