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Mesa/Boogie 2:90 User Manual

Mesa/Boogie 2:90
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STEREO SIMUL-CLASS 2:90
Operating Manual
1
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Mesa/Boogie 2:90 Specifications

General IconGeneral
TypeTube Power Amplifier
Power Output90 Watts per Channel
Channels2
Impedance4, 8 Ohm
ControlsPresence
Dimensions10.5 x 8.5 x 24 inches
Weight45 lbs

Summary

Front Panel Overview

Voicing Feature: Deep

Activates Deep function for lower fundamental, added warmth, and 3D sound.

Voicing Feature: 1/2 Drive

Reduces output, brightens top end, adds sponginess and easier playability.

Voicing Feature: Modern

Provides high-gain crunch, tightens lows, and enhances percussive mids/highs.

Channel Controls: Level and Presence

Controls volume levels (A/B) and tonal brightness/sparkle (Presence A/B).

Power and Standby Operation

Manages AC mains and filament voltage, including warm-up procedure.

Main Fuse Replacement

Locates and specifies replacement for the main fuse.

Back Panel Connections

Input Jacks and Sensitivity

Connects pre-amps/effects, offers instrument or line level input sensitivity.

Voicing Switches Actuation

Details how to activate voicing features using tip-to-ground switches.

Speaker Output Configurations

Provides guidance on connecting speaker cabinets with various impedance loads.

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