Input Gain - Signal Level Indication
The GAIN control should be set in conjunction with the SIGNAL LEVEL INDICATING LED. Setting
this control correctly may also influence the decision on which input to use. When correctly set
the amplifier will perform with very little background noise. It is therefore important to set the
gain control correctly using the following procedure:-
1.
Plug the instrument into the appropriate input chosen from the previous descriptions.
2.
Set the graphic to flat.
3.
Play the instrument in the way you wish to use it (e.g. plucked, slapped, bowed, etc.).
4.
Increase the GAIN control until the LEVEL INDICATION LED lights up green for most of the
time while playing.
5.
Advance the GAIN control further such that on heavy playing the LED changes from green
to red.
6.
Decrease the GAIN control slightly to allow a margin of safety.
7.
If the LED cannot be made to register red while using the ACTIVE/HI LEVEL input then
transfer your input to the PIEZO/LO LEVEL input and re-adjust the gain, as from 3.
IMPORTANT When correctly set, the green LED should light for most of the playing time.
NOTE As the LEVEL INDICATION LED is driven from after both the GRAPHIC and SHAPE circuits,
it may be necessary to re-adjust the GAIN control once these have been selected/altered.
Hi Trim/Lo Trim
The HI and LO TRIM controls have been provided to “trim” the sound from the user’s
instrument/pickup combinations to achieve a fundamentally flat response prior to any tailoring of
the sound with the graphic of shape facilities.
Channel 2
The channel 2 input operates in exactly the same way as the PIEZO/LO LEVEL input of channel 1.
Input Gain - Signal Level Indication
Set the GAIN control in the same way as channel 1.
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