Audio research sp 3 owners manual
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Page 1
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INSTRUCT10N MANUAL
MODEL SP-3A-1
PREAMPLIFIER
(INCLUDES ALL VERSIONS)
audio research
-
HIGH DEFINITIDN®
3900 ANNAPOLIS LANE NORTH / PLYMOUTH, MINNESOTA 55447-5447
PHONE: 761577-9700 FAX 763-577 0323
Page 2
TABLE OF CONTENTS
Section
Introduction
Line Voltage Conversion
Equipment Packaging
Installation and Mounting
Rear Panel Functions
System Connection
Front Panel Functions
General Operation
System Diagnostics
Factory Service
Routine Maintenance
Technical Specifications
Circuit Description
Parts List
Equipment Servicing . .
Nominal Power Supply Filter Ripple Waveforms
Voltage/Resistance Table
Troubleshooting Table
LIST OF ILLUSTRATIONS
Title
Equipment Packaging
Equipment Dimensions
Rear Panel Layout
Single Amplifier Connection (for clual output tape recorders)
Single Amplifier Connection (for single output tape recorders)
Bi-Amplified Connection
TriAAmpIified Connection
Front Panel Layout
Tone Control Response
Contour Control Response
Frequency Response
Phase Response
Simplified Schematic Diagram
Schematic Diagram
Chassis & Tube Layout
PCBA85C Component Layout
PCB-86 Layout (Resistors)
PCB-86 Layout (Capacitors)
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