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Mic Preamp

Equivalent Input Noise (20Hz-20kHz)

 150 ohm

-129.5 dBu

   50 ohm

-131.0 dBu

 0 ohm

-134.5 dBu

Frequency Response

 -1dB

5Hz to 100kHz:

 -3dB

3Hz to 192kHz:

IM Distortion (4 to 1 ratio SMPTE)
 35dB gain

0.0008%

Harmonic Distortion (20Hz-20kHz)
 35dB gain

0.0007%

Gain
 Max +60dB
 Min 0dB or Unity
Max Input +22dB
Input Impedance 1.3k Ohm
Common Mode Rejection > 90dB
Common Mode Rejection Ratio > 140dB
Main Mix Noise
20Hz-20kHz bandwidth, 1/4" Main out, channels 1-4 Trim @ unity gain, channel EQs flat, all channels assigned to Main Mix, channels 1 and 3 Pan left, 2 and 4 Pan right, Reference +4dBu
Main Mix knob fully counterclockwise, channel Gain knobs down:

-104dBu

Main Mix knob unity, channel Gain knobs down:

-90.5dBu

(90dB Signal to Noise Ratio, ref +4dBu)Main Mix knob @ unity, channel Gain knobs @ unity:

-88.5dBu

Total Harmonic Distortion (THD)
1kHz @ +14dBu, 20Hz-20kHz.
Mic in to Main out:

0.005%

Attenuation (Crosstalk)
1kHz relative to 0dBu, 20Hz-20kHz bandwidth, Line in, 1/4" Main Out, Trim @ unity
Main Mix knob down:

-85dBu

Channel Mute/Alt 3/4 switch engaged:

-84dBu

Channel Gain knob down:

-83dBu

Frequency Response
Any input to any output
  +0dB/-1dB

20kHz to 60kHz

  +0dB/-3dB

20kHz to 100kHz

Maximum Levels
Mic in:

+22dBu

Tape in:

+16dBu

All other inputs:

+22dBu

Main Mix XLR out:

+28dBu

All other outputs:

+22dBu

Impedances
Mic in:

1.3 kilohms

Channel Insert return:

2.5 kilohms

All other inputs:

10 kilohms or greater

Tape out:

1.1 kilohms

All other outputs:

120 ohms

EQ
High Shelving

±15db @12kHz

Mid Peaking

±12dB @ 2.5kHz

Low Shelving

±15db @ 80Hz

Power Consumption:

120VAC, 50/60Hz, 25 watts

Weight:

6 lbs 8 oz. (3 kg)

Since we're always striving to make our stuff better by incorporating new and improved materials, components and manufacturing methods, we reserve the right to change these specifications at any time without notice.
 

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