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録音機器 Drawmer 1969のPDF 取扱説明書をオンラインで閲覧またはダウンロードできます。Drawmer 1969 13 ページ。 Dual vacuum tube compressor
Drawmer 1969 にも：取扱説明書 (13 ページ)

1969 OPERATORS' MANUAL

Stereo Link:

Big Link:

MICROPHONE PRE-AMPLIFIER

Mic Input Gain:

The Auxiliary Input has a 2M2Ù impedance and feeds a specialised instrument input

stage which provides both gain and equalisation, suitable for use with both active and

passive guitar pickup systems as well as with electronic keyboards. The passive Bass

and Treble controls are based on those used in classic tube guitar amplifiers while the

Bright switch puts a peak in the frequency response at around 2kHz to simulate the

voicing of a typical guitar amplifier. A two position high or low gain switch provides an

additional 10dB of gain when required for level matching or for creating overdrive

effects.

When setting up a good starting point is to switch Bright 'On' and set the compressor for

'3' attack and '6' release. The threshold should be adjusted to give a gain reduction

reading of around 5dB on signal peaks. By increasing the Gain control setting, the input

stage can be made to overdrive in a manner similar to that of traditional valve guitar

amplifiers.

This makes Channel 1 controls the stereo master and disables the

compressor stage of channel 2 when the unit is used for

processing a stereo signal. Since the same gain reduction is

applied to both audio channels no image shifting can occur.

Makes the compressor side chain less sensitive to low bass

frequencies, so reducing the ducking effect caused by bass energy

and effectively boosting the bass output.

This switchable control sets the mic input gain over the range 0 to

66dB in 6dB steps. The adjacent Clip LED illuminates when

excessive Mic gain has been applied and there is a danger of

clipping.