Quick set up – Drawmer 1969 Vacuum Tube Compressor Pre-Amplifier User Manual
Page 10
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.