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optonica SM-1515H User Manual

optonica SM-1515H
12 pages
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optonica SM-1515H Specifications

General IconGeneral
Brandoptonica
ModelSM-1515H
CategoryAmplifier
LanguageEnglish

Summary

General Description and Key Specifications

Unit Overview

Covers power source, consumption, semiconductors, dimensions, and weight.

Main Amplifier Performance

Details continuous power output, intermodulation distortion, damping factor, and power bandwidth.

Preamplifier and Tone Control Specs

Lists preamp circuit, input/output specs, RIAA deviation, tone control, and low cut filter.

Frequency Response

Specifies frequency response for main and preamp sections.

Front Panel Layout

Front Controls and Indicators

Lists and describes front panel controls like Bass Control, Volume, Power Switch, and selectors.

Rear Panel Layout

Rear Connectivity Ports

Details rear panel connections including speaker terminals, input/output jacks, and fuse holder.

Disassembly Procedures

Cabinet and Panel Removal

Instructions for removing the cabinet, front panel, and bottom plate.

Preparation For Use

Voltage Selection

Guidance on checking and setting the mains voltage selector before connecting the unit.

Block Diagram

Overall System Architecture

A visual representation of the amplifier's internal circuits and signal flow.

Circuit Descriptions

Main Amplifier Circuit

Details the differential 1-stage pure complementary circuit with Darlington power packs.

Meter Circuit

Explains how output signals are converted to DC for logarithmic amplification to drive output meters.

Muting Circuit

Electronic Muting Operation

Describes the muting circuit for preventing noises during power on/off and thermal issues.

Equalizer Circuit

Equalizer Circuit Operation

Details the two-power-supply FET and transistor-based equalizer circuit.

IC Output Circuit

IC Output Circuit Handling

Notes on replacing ICs, recommending silicone grease for heat sink contact.

Wiring Side of P.W. Board

Wiring Diagram Overview

Illustrates the wiring connections for various components on the printed wiring board.

Schematic Diagram

Complete Circuit Schematic

Presents the full schematic diagram of the amplifier, including component references.

Troubleshooting Chart

Troubleshooting Common Issues

Lists common phenomena, their causes, and countermeasures for troubleshooting.

Replacement Parts List

Integrated Circuits and Transistors

Lists replacement part numbers and descriptions for ICs and transistors.

Resistors and Capacitors

Details replacement part numbers and descriptions for resistors and capacitors.

Parts List Details

Miscellaneous Components

Lists replacement parts for capacitors, switches, sockets, and other miscellaneous items.