Crown Macro-tech -2400 User Manual

Macro-Tech 2400 Amplifier Service Manual
1
MACRO-TECH
®
-2400
POWER AMPLIFIER
SERVICE MANUAL
K-SVCMA24
3-96
Macro-Tech
®
, ODEP
®
and Crown
®
are registered trademarks of Crown International, Inc.
Mailing Address:
P.O. Box 1000
Elkhart, IN U.S.A. 46515-1000
Shipping Address:
57620 C.R. 105
Elkhart, IN U.S.A. 46517
©1996 by CROWN INTERNATIONAL, INC.

Crown Macro-tech -2400 Specifications

General

Total Harmonic Distortion (THD)	< 0.05%
Voltage Gain	20:1
Input Impedance	10k ohms balanced, 5k ohms unbalanced
Power Output (4 Ohms)	800W
Frequency Response	20Hz - 20kHz
Input Sensitivity	1.4V
Signal-to-Noise Ratio	> 100 dB
Cooling	Forced air
Dimensions	48.3 cm x 13.3 cm x 41.1 cm
Power Requirements	120V
Weight	21 kg (46 lbs)

Summary

Introduction

Scope

Defines the manual's applicability and scope for different amplifier versions.

Warranty

Outlines warranty service policies and procedures for contacting Crown.

Parts Information

General Information

Provides general context and notes regarding parts availability and product modifications.

Part Numbering Systems

Explains Crown's part numbering conventions for identification and ordering.

Standard and Special Parts

Differentiates between commonly available and specialized electronic parts.

Ordering Parts

Guides users on how to correctly order replacement parts, including necessary information.

Shipment

Details shipping methods and terms for parts orders, including domestic and international.

Terms

Outlines payment terms, credit policies, and restocking fees for parts orders.

Specifications

POWER

Lists the output power ratings of the amplifier under various impedance conditions.

PERFORMANCE

Details key audio performance metrics such as frequency response, THD, and slew rate.

MECHANICAL

Describes the physical dimensions, weight, connectors, and construction of the amplifier.

Voltage Conversion

Theory

Amplifier Features and Front End

Explains amplifier features and front-end signal processing stages.

Amplifier Signal Path

Details signal path from voltage amplification to LVAs.

Output Stage and Protection

Describes the output stage design, operation, and protection systems.

Electrical Checkout Procedures

Initial Setup and Basic Tests

Covers manual introduction, initial conditions, and basic DC offset/bias/ODEP tests.

Performance and Input Tests

Details tests for AC power, CMR, gain, phase, levels, current limit, slew rate, and crosstalk.

Output and Protection Tests

Covers output power, reactive loads, ODEP limiting, LF protection, and S/N ratio.

Transient and Distortion Tests

Covers turn-off transients, IM distortion, clipping, and final control settings.

Parts List (Non-Module)

Supplementary and Chassis Parts

Lists supplemental, output, back panel, and front chassis components.

Main Chassis and Power Supply Parts

Details parts for the power supply and main chassis assemblies.

Module and Schematic Information

Module History

Provides context for module updates and changes since the amplifier's introduction.

Output Modules

Lists part numbers for various output module revisions and their replacements.

Main Modules

Lists part numbers for various main module revisions and their replacements.

Fuse Module

Identifies specific fuse module part numbers and their associated boards.

Display Module

Lists part numbers for different display module versions and their boards.

Schematic Information

Guides users on identifying the correct schematic for specific amplifier revisions.

Module Parts Lists

Fuse Module Parts Lists

Detailed parts list for the fuse module assembly.

Display Module Parts Lists

Lists components for various display module versions.

Output Module Parts Lists

Lists components for various output module versions.

Main Module Parts Lists

Lists components for various main module versions.