MESA ENGINEERING POWERHOUSE User Manual

SAFETY PRECAUTIONS:
• Read these instructions.
• Keep these instructions.
• Heed all warnings.
• Follow all instructions.
• Caution: When using the Internal Load with high output amplifiers (100+ watts), do not set the amplifier’s Output (Master) all the way up.
This can stress the amp and prematurely wear the output tubes, the same as if it were connected to a speaker. If the POWERHOUSE
chassis gets hot to the touch, back down the Master Volume. Your amp will thank you.
• Do not use this apparatus near water.
• Clean only with dry cloth.
POWERHOUSE Reactive Load Attenuator Quick Start Guide
Thank you for choosing the POWERHOUSE
®
Reactive Load Attenuator and welcome to the MESA/Boogie Family! This product benefits from the
same strict code of fine instrument building that all MESA/Boogie Products share and we hope you find years of inspiration and enjoyment through
its features.
OVERVIEW
Every experienced player knows there’s nothing like a great tube amp running in the power band for tone, feel and excitement. Be it a 30-watt Combo running
6V6 or EL84s, or a full-blown 100-watt Head cranking with 6L6 or EL34s, nothing compares to the dynamics, expressiveness, fullness and dimensionality of a tube
power amp operating in “the zone”.
However, these days venue volumes are down and neighbors everywhere aren’t as tolerant as they once were. That’s no reason to compromise your sound and
run your favorite amp, be it combo or head, in its less dynamic idle zone …because we’ve got you covered with our POWERHOUSE
®
Reactive Load Attenuator.
Quick Start Guide

MESA ENGINEERING POWERHOUSE Specifications

General

Brand	MESA ENGINEERING
Model	POWERHOUSE
Category	Music Pedal
Language	English

Summary

Safety Precautions

Overview

Rear Panel Connections and Outputs

Input - From Amp SPKR Out

Connects to the amplifier's speaker output. Must set SPKR/LOAD to LOAD for protection.

Line Out (Dry)

Line level output for outboard gear or additional amplification. Unprocessed signal.

Line Out Control

Rotary control for the Line Out (Dry) output level adjustment.

Outputs - To Live Speaker Cab

Outputs for connecting speaker cabinets for live monitoring.

Front Panel Controls

SPKR/LOAD Switch

2-position toggle for internal load status: connected or defeated.

Attenuation Control

5-position rotary switch for attenuation levels from 0dB to -16dB.

Level Control

Active only in 16dB setting for fine-tuning listening level.

Voicing Options

3-position toggle for voicing options: warmer, neutral, or brighter.

Cooling Fan

Internal cooling fan powered by speaker signal, speed varies with output level.