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Mesa/Boogie Dual Rectifier Road King II Amp User Manual

Mesa/Boogie Dual Rectifier Road King II Amp
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Owner's Manual
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Mesa/Boogie Dual Rectifier Road King II Amp Specifications

General IconGeneral
BrandMesa/Boogie
ModelDual Rectifier Road King II Amp
CategoryMusical Instrument Amplifier
LanguageEnglish

Summary

Precautions and Warnings

Overview of the Road King Amplifier

Getting Started with Your Road King Amplifier

Helpful Hints for Amplifier Use

MESA Road King Channel Modes

Channels 1 & 2: Clean

Describes the lowest gain circuit for balanced pristine clean sounds.

Channels 1 & 2: Fat

Emphasizes low mid and bottom end for girth and warmth.

Channel 1: Tweed

A variation on CLEAN with an elastic, bouncy character for vintage feel.

Channel 2: Brit

Inspired by 50s/60s British amps, offers thicker, throatier tone.

Channels 3 & 4: Raw

Lowest gain lead channel for wide spectrum, from blues to crunch.

Channels 3 & 4: Vintage

Famous liquid Recto voice with lush harmonic content and fat creamy feel.

Channels 3 & 4: Modern

Aggressive tone with menacing power, top-end cut, and fast response.

Road King Amplifier Controls

Gain Control

Adjusts the predominant gain stage, shaping tone and character.

Treble Control

Dominant tone control, shapes overall frequency response and balances tone controls.

Mid Control

Blends midrange frequencies, affecting feel and focus.

Bass Control

Determines low frequencies, varying in style and frequency from channel to channel.

Presence Control

High frequency attenuator affecting voicing, crucial for channel tone.

Master Control

Master feed from preamp to driver stage and effects loop, matching channel volumes.

Output Control

Overall output level control for the amplifier, active when Effects Loop is active.

Solo Control

Additional output control for a footswitchable boost for solos.

Hi Volts Switch

Standby switch for warming tubes before powering up.

A.C. Mains (Power On)

Delivers AC power to the amplifier, requires proper grounding.

Rear Panel Overview

Slave Output

Provides a signal derived from speaker jack for pre-amp or FX Send.

Speaker Outputs & Cabinet Switching

Assignable speaker outputs for different cabinets and impedance loads.

Reverb Control

Controls dry/wet mix ratio for analog reverb, dedicated per channel.

Channel Strips

Clusters of switches and controls for pre-assigning features per channel.

Progressive Linkage

Assigns different power amplifiers to preamps for sonic versatility.

Selecting Power Tubes

Discusses the characteristics and sounds of different power tube configurations.

Rectifier Select with Tube-Tracking

Feature allowing rectifier circuit to track progressive linkage power for correct rectification.

Speaker A/B Select Switch

Mini toggle assigning signal to speaker output jacks.

Loop 1 & 2 Select Switches

Mini toggles assigning status for Series Effects Loops.

Tuner Output

Rear panel output for connecting a tuner, maintains direct instrument signal.

Ext Mute Function

Jack for Tuner Mute function with external switching systems.

Power: Spongy / Bold Switch

Selects between two AC power voltages via built-in Variac for tone shaping.

Fuse Information

AC main fuse protecting against fluctuations and power tube damage.

Serial Number Location

Location of the amplifier's serial number for warranty registration.

Factory Sample Settings Guide

Channel 1 Setting #1 Versa Clean

Sample settings for a clean tone on Channel 1.

Channel 1 Setting #2 Spank

Sample settings for a bright, punchy tone on Channel 1.

Channel 1 Setting #3 Elastic Tweed

Sample settings for a vintage, elastic tweed tone on Channel 1.

Channel 1 Setting #4 Fat Solo

Sample settings for a fat, sustained solo tone on Channel 1.

Channel 2 Setting #1 Skinny Skank

Sample settings for a bright, articulate tone on Channel 2.

Channel 2 Setting #2 Rhythm Mix

Sample settings for a balanced rhythm tone on Channel 2.

Channel 2 Setting #3 Power Rhythm

Sample settings for a powerful rhythm tone on Channel 2.

Channel 2 Setting #4 Brit Grind

Sample settings for a classic British grind tone on Channel 2.

Channel 3 Setting #1 Purring Blues

Sample settings for a smooth blues tone on Channel 3.

Channel 3 Setting #2 Smooth Grind

Sample settings for a smooth, gritty tone on Channel 3.

Channel 3 Setting #3 Liquid Solo (Recto Vintage)

Sample settings for a liquid, vintage solo tone on Channel 3.

Channel 3 Setting #4 Giant Fur

Sample settings for a thick, powerful tone on Channel 3.

Channel 4 Setting #1 Atlantic Blues

Sample settings for a bluesy tone on Channel 4.

Channel 4 Setting #2 Stripped Grind

Sample settings for a sharp, grinding tone on Channel 4.

Channel 4 Setting #3 Hot Liquid Solo

Sample settings for a hot, liquid solo tone on Channel 4.

Channel 4 Setting #4 Recto Modern

Sample settings for a modern, aggressive tone on Channel 4.

Tube Noise and Microphonics

Diagnosing Power Tube Failure

Diagnosing Tube Noise

Diagnosing Pre-Amp Tube Problems

Bias Adjustment Explained

Speaker Impedance Matching Guide

Impedance

Proper wiring and loading of speakers for optimal sound and amplifier protection.

Mis-Matching

Effects of running higher resistance loads and slight mismatches.

What is My Cabinets Impedance

Calculating speaker load and wiring methods like Series and Parallel.

Amplifier to Speaker Cabinet Wiring Schemes

Understanding Tube Types: Triodes, Pentodes, and Irishmen

Road King Tube Task Chart

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