Effects Loop; Tuner Out; Direct Output - Pre/Post Switch; Direct Output & Ground Lift Switch - Mesa/Boogie M9 Carbine Owner's Manual

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reAr PANeL CONTrOLS:

EFFECTS LOOP: (Continued)

disconnecting your patch cables from the SEND and RETURN jacks while making fine adjustments at the processor until you hear

no level difference. Keep in mind you might have to adjust the CARBINE OUTPUT control also if the processor indicating lights read

unity gain (look good and are not clipping).

NOTE: The EFFECTS LOOP IS optimized for professional quality rack mount processors. Most pedal type effects work better in the

"front-end" between your instrument and the INPUT. You will experience some tonal changes because of the additional cable and

the fact that your instrument will no longer be going straight into the grid of the first tube. It's up to you to decide if the trade off is

acceptable.

This Rear Panel auxiliary TUNER output provides for Rear Panel interfacing of rack mount tuners, where it is prefer-

able to have all wiring stay in the rear of a rack system.

DIRECT OUTPUT - PRE/POST:

the entire preamp and all the controls affect the sound – and a PRE signal – where the instrument signal is fed directly to the DIRECT

OUTPUT bypassing the entire preamp. In the PRE setting, the controls will not affect the signal at the DIRECT

OUTPUT.

The PRE setting is useful for large venues when the sound you have dialed up for your optimum stage tone might

have to much low end for the front of house engineer to balance through a large PA where there are subwoofers

employed.

DIRECT OUTPUT & GROUND LIFT:

to send a Balanced signal to either a House Main Board or a Recording console. There are two elements to this circuit which are; (1)

a male XLR jack and (2) a GROUND LIFT switch.

GROUND LIFT: This switch removes the circuit-to-chassis ground connection from the XLR jack. Leave it in the

grounded position (switch down) normally unless you experience a hum when connecting to a console. If you do

experience a hum when connecting the XLR Output to a console, try lifting the ground (switch up) on the circuit.

This will usually (but not always) remedy most ground loop type noise from the signal path.

NOTE: Ground loops can occur in many places in a complex signal path. The DIRECT OUTPUT GROUND LIFT switch is not a cure-

all and therefore should not be expected to remedy every type of ground related problem.

Now that we have the Rear Panel sussed-out, you are ready to enjoy the musicality and power of the CARBINE. We hope this

instrument brings you many years of inspiration and musical discovery. From all of us here at MESA...Enjoy!

(Continued)

3) Adjust the processor's Input/Output Level attenuator to achieve unity gain by connecting and

This switch toggles the output signal at the DIRECT OUTPUT between a POST signal - where

This section captures the entire pre-amp signal including the Effects Loop and allows you

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