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Mesa/Boogie Big-Block 750 User Manual

Mesa/Boogie Big-Block 750
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Mesa/Boogie Big-Block 750 Specifications

General IconGeneral
Power Output750 Watts
Channels2
Speaker Outputs2 x 1/4"
Power Output @ 4 Ohms750 Watts
Tube PreampNo
Effects LoopYes
Direct OutputYes
Dimensions19" x 10.5" x 3.5"
Inputs1 x 1/4"
TypeSolid State

Summary

Precautions and Warnings

Front Panel Controls

Instrument Input

The instrument input jack feeds the first tube in the all-tube preamp, designed for ample headroom.

Gain Control

This control determines input sensitivity, affecting headroom and tonal character from bright to full.

Master Control

Sets the overall playing volume by feeding the Simul State power section, influenced by preamp settings.

O.D. Master Control

Provides independent volume control for the overdrive mode, allowing preset levels for footswitchable parts.

Rear Panel Controls

Direct Output Circuit

Captures preamp signal for balanced output to consoles, with LEVEL, POST/PRE, and GROUND LIFT options.

Effects Loop

Series effects loop provides interface for external signal processors via SEND and RETURN jacks.

Speaker Outputs

Outputs for connecting speaker enclosures, offering Speak-On and 1/4" jacks for cabinet interfacing.

Diagnosing Pre-Amp Tube Problems

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