Trace Acoustic TA40R - Trace Acoustic Amplifier Front Panel Controls; Input and Sensitivity Settings; Gain and Level Indicator Setup

Input/Input switch
There is a single INPUT jack socket that will perfectly match ACTIVE instruments with their own
internal preamp and passive instruments with just a PIEZO pickup or transducer by selecting either
type with the switch adjacent to this socket.
With the input sensitivity set to PIEZO (switch out) the input impedance is extremely high i.e 4
million Ohms. This will perfectly match any PIEZO device giving a clear and accurate response with
no degradation to the signal.
With the input sensitivity set to ACTIVE (switch in) the impedance is much lower 47k Ohms and the
sensitivity much lower. This will match instruments with a built in preamp without fear of clipping
the input. If however your active instrument has an insufficient level of output to light the LEVEL
LED (as some do) then it is perfectly alright to switch back to the PIEZO setting to increase the
sensitivity to a level that works best with your instrument.
Input gain/level indication
The GAIN control should be set in conjunction with the LEVEL LED. When correctly set the amplifier
should perform with very little background noise. It is therefore important to set the GAIN control
correctly using the following method:
1. Plug the instrument into the input jack and select the appropriate INPUT sensitivity.
2. Play the instrument in the style that you would use it e.g. strumming, finger picking etc.
3. Increase the GAIN control until the LEVEL LED is lighting quite often.
4. Decrease the GAIN control so that the LEVEL LED is only lighting on peaks.
5. If the LED cannot be made to light whilst playing then do the following:-
If your instrument is an ACTIVE one then either turn its own level control up further or switch the
INPUT sensitivity to PIEZO and try again.
FRONT PANEL CONTROLS
GAIN LO-TRIM HI-TRIM NOTCHINPUT 1 INPUT PHASE
OFF
PIEZO
ACTIVE
IN PHASE
REVERSE
CHANNEL 1
GAIN LO-TRIM HI-TRIM NOTCHINPUT 2 INPUT PHASE
OFF
PIEZO
ACTIVE
IN PHASE
REVERSE
CHANNEL 2
BALANCE
CHORUS
DEPTH LEVEL MASTER
LEVEL
CHAN 1 CHAN 2
SPEED
REVERB
POWER
PULL - SHAPE
TA40CR
LEVEL
LEVEL
IN
OUT
IN
OUT
PULL - ONPULL - ON
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