NAD 3240 Service Manual

: NAD
SERVICE
_
MANUAL
m
Z
1958BYNAD 555
PAINTEDINJAPAN
STARTING
SERIAL
NUMBER A 340 IJ00001
3240
NAD
ELECTRONICS
INTEGRATED
AMPLIFIER
Ii
II

NAD 3240 Specifications

General

Power Output	40 watts per channel into 8Ω (stereo)
Frequency Response	20Hz to 20kHz
Damping Factor	50
Input Sensitivity	2.5mV (MM), 150mV (line)
Speaker Load Impedance	4Ω to 16Ω
Dimensions	420 x 100 x 300mm (W x H x D)

Summary

Rear Panel Layout and Connections

Front Panel Controls and Features

Amplifier Specifications

Power Amplifier Section

Details specifications for the power amplifier stage, including output power and distortion.

Preamplifier Section

Details specifications for the preamplifier stage, including input sensitivity and noise ratio.

Amplifier Alignment Procedures

Main Amplifier Adjustment Steps

Procedure for adjusting center voltage, idle current, and final settings for the main amplifier.

Preamp and Volume PCB Layout

Diagram showing component layout for the preamp and volume circuit boards.

Amplifier PCB Layout Diagram

Amplifier Schematic Diagram

Wiring Diagram

Power Transformer Primary Wiring

PCB Parts Location

Volume and Preamp PCB Parts

Diagram indicating the location of parts on the volume and preamp circuit boards.

Amplifier PCB Parts

Diagram indicating the location of parts on the main amplifier circuit board.

Electrical Parts List

Exploded View Diagrams

Exploded Parts List

Packing Diagram and Instructions