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Acoustic 450 User Manual

Acoustic 450
21 pages
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Note: This owner’s manual for the Acoustic 450 has been reconstructed from digital scans of an
original manual, run through OCR software and reconstituted into a printable document. Every effort
has been made to retain the content integrity of the original
document. Thanks Julien
for the files.
OWNER'S MANUAL
control corporation
MODEL 450
LEAD / BASS AMPLIFIER
acoustic control corporation
7949 Woodley Avenue
Van Nuys, Ca. 91406
(213) 997-6631
1 P/N 410134
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Acoustic 450 Specifications

General IconGeneral
BrandAcoustic
Model450
CategoryAmplifier
LanguageEnglish

Summary

A WORD TO ACOUSTIC AMPLIFIER OWNERS

ACOUSTIC LIFETIME WARRANTY

IMPORTANT WARRANTY REGISTRATION

Stresses the necessity of registering the product within 10 days for warranty validation and service.

GENERAL DESCRIPTION

MODEL 450 SPECIAL FEATURES

LEAD/BASS SELECTOR SWITCH FUNCTION

Explains the switch for lead vs. bass guitar modes and its effect on harmonics.

SPECIAL OUTPUT CIRCUIT CONFIGURATION

Describes circuit design providing constant power, good bass, and augmented harmonics.

AUXILIARY VOLUME CONTROL FEATURE

Allows pre-setting two volume levels for switching with a foot switch.

INTERNATIONAL VOLTAGE SELECTION

Details voltage selection for international use via internal switches.

OPERATION OF CONTROLS AND CONNECTIONS

INPUT JACKS OPERATION

Describes the two input jacks, their loudness difference, and optimal usage for signal-to-noise ratio.

BRIGHT SWITCH FUNCTION

Explains how this switch boosts treble for a crisper sound.

VOLUME CONTROL FUNCTION

Describes the volume control for all frequencies and functions.

TREBLE CONTROL FUNCTION

Details the treble control for upper-range tones, its cut/boost type, and flat position.

MID-RANGE CONTROL FUNCTION

Explains the mid-range control for middle tones, its cut/boost type, and use with Graphic EQ.

BASS CONTROL FUNCTION

Describes the bass control for low-range tones, its cut/boost type, and use with Graphic EQ.

DISTORTION CONTROL FUNCTION

Explains the distortion control for creating fuzz effects, bypass, and foot switch operation.

AUXILIARY VOLUME CONTROL OPERATION

Allows pre-setting two volume levels and switching between them with a foot switch.

GROUND REVERSE SWITCH FUNCTION

Helps reduce or eliminate persistent hum or buzz from guitar strings.

LEAD/BASS SELECTOR SWITCH OPERATION

Selects amplifier mode for lead or bass guitar, affecting harmonic response.

POWER ON/OFF SWITCH FUNCTION

Turns the system on/off, with an indicator light and potential thump on power-up.

GRAPHIC EQUALIZER EXPLANATION

Explains the five-section graphic equalizer, its frequency ranges, and shaping capabilities.

REAR PANEL CONNECTIONS AND FEATURES

SPEAKER OUTPUT JACKS

Describes the two speaker output jacks and how to connect speakers.

BOOSTER OUTPUT FUNCTION

Explains the booster output for driving additional power amplifiers and speakers.

LINE OUTPUT FUNCTION

Details the line output for controlling multiple amps/speakers from the preamp.

ACCESSORY JACK FUNCTION

Describes the three-conductor jack for routing signal to/from accessory equipment.

FOOTSWITCH CONNECTOR

Explains the connector for the distort and auxiliary volume footswitch.

FUSE REPLACEMENT AND SAFETY

Details the fuse location, type, and replacement guidelines for safety.

AC CONVENIENCE OUTLET

Describes the outlet for auxiliary power, warning about exceeding rating.

AC LINE CORD GROUNDING

Discusses the grounding system of the line cord for shock prevention and hum reduction.

SPEAKER IMPEDANCE GUIDELINES

MODEL 450 PHYSICAL SPECIFICATIONS

PHYSICAL CONNECTIONS

Lists physical connection types and quantities on the amplifier.

AMPLIFIER CONTROLS

Details the types of potentiometers and switches used for amplifier controls.

MODEL 450 ELECTRICAL SPECIFICATIONS

OUTPUT SPECIFICATIONS

Details continuous and peak power output ratings across different impedance loads.

GAIN SPECIFICATIONS

Provides preamp, total, and power amp gain figures in dB and X multipliers.

SENSITIVITY AND IMPEDANCE

Lists input voltage requirements for maximum output and input impedance.

NOISE MEASUREMENTS

Specifies the noise-to-full-output ratio under minimum and maximum volume conditions.

FREQUENCY RESPONSE DETAILS

Outlines the amplifier's frequency response at 10W and power bandwidth.

AUXILIARY OUTPUT DETAILS

Details output voltage and impedance for auxiliary and booster outputs.

DISTORTION CIRCUIT SPECIFICATIONS

Provides the minimum input voltage required to clip the power amp.

TONE CONTROL RANGES

Lists the boost/cut ranges for Bass, Treble, Mid-Range, and Bright Switch.

GRAPHIC EQUALIZER RANGES

Specifies the boost/cut ranges for each of the five graphic equalizer sections.

AMPLIFIER LINE VOLTAGE REQUIREMENTS

107 VOLTS LINE OPERATION

Details fuse and usage for 107V/110V supply lines, with caution for 120V.

120 VOLTS LINE OPERATION

Specifies fuse and usage for 117V/120V supply lines in the USA.

214 VOLTS LINE OPERATION

Details fuse and usage for 210V/220V AC supply lines, with caution for higher voltages.

240 VOLTS LINE OPERATION

Specifies fuse and usage for 225V/230V/240V AC supply lines in Europe/Australia.

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