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Quick set up – Drawmer 1969 Vacuum Tube Compressor Pre-Amplifier User Manual

Page 10

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1969 OPERATORS’ MANUAL

8

Bass EQ:

Passive equaliser control, which can be set to provide up to

15dB of bass boost at 40Hz.

Treble EQ:

Passive equaliser control, which can be set to provide up to

18dB of treble boost at 16kHz.

Gain:

Provides up to 30dB of gain at the Low Gain switch setting

or 40dB at the High Gain setting.

Low/High:

Sensitivity selector switch. Adds 10dB of gain in the High

position.

Flat/EQ:

Switches the equaliser controls out of circuit when a flat

response is required, or for 'A/B' comparison of EQ
effectiveness.

Norm/Bright:

Switches in 10dB of boost at 2kHz in the Bright position, (

when 'EQ' has been selected on the Flat/EQ switch.)

QUICK SET UP

"

Select Stereo Link mode for use with a stereo signal, otherwise ensure

this switch is Off.

"

Choose correct signal source for each channel using selector.

"

Initially, set the Attack selector to 3 (a Medium position) and set Release

to 6 (Programme Dependent).

"

Set the Mode switch to Normal and the Meter switch to GR.

"

W ith programme material playing, adjust the Threshold control until the

desired amount of gain reduction registers on the meters.

"

Use the Output Gain control to restore any level lost due to compression.

"

If necessary, change the Attack and Release settings to suit the material.