Dual CV 1260 Service Manual

Technische Daten
CV 1260
Service-Anleitung
Service Manual
Instructions de Service
Technical Data
Caractéristiques techniques
1 Koaxialbuchse 1/4 inch für Kopf-
hórer
1 Bandausgang an Tape 1 (DIN)
1 Line-Ausgang an Tape 2
(Ri = 4700)
1 Spannungsversorgungsbuchse
für Tuner Dual CT 1160
1 coaxial jack 1/4 inch for head-
phone
1 tape output to Tape 1 (DIN)
1 Line output to Tape 2
(Бі = 4700)
1 Power supply socket
fur tuner Dual CT 1160
1 prise coaxiale de 1/4 inch le
raccordement du casque-écouteur
1 sortie magnéto sur la prise Tape 1 (DIN)
1 sortie LINE sur la price Tape 2
(Ri = 470 Q)
1 Jack d'alimentation en tension
pour un tuner Dual CT 1160
(typische Werte) (typical value) (valeur caractéristiques)
Ausgangsleistung (DIN / 8 Q) Rated output (DIN / 8 Q) Puissance de sortie (DIN / 8 0)
Musikleistung music power Puissance musicale 2 x 80 Watt
Sinus-Dauertonleistung Rms continuous power output Puissance efficace 2 x 60 Watt
Klirrfaktor Harmonic distortion Facteur de distortion
bis 2 x 40 Watt, 1000 Hz up to 2 x 40 W, 1,000 Hz jusqu'à 2 x 40 watts, 1000 Hz « 0,03 %
Leistungsbandbreite Power bandwidth Réponse en puissance
nach DIN 45 500 Complying with DIN 45 500 selon DIN 45500 10 Hz — 45 kHz
Übertragungsbereich Frequency response Bande passante
(Baß- und Höhenregler in Mitten- (bass and treble controls at center (Régulateurs des basses et des aigus 20 Hz — 20 kHz + 1 dB
stellung) position) en position centrale) 10 Hz - 45 kHz + 3 dB
Phono nach RIAA Phono complying with RIAA Phono selon RIAA 20 Hz - 20 kHz + 1 dB |
Eingänge Inputs Entrées
Tuner, Tape 1, Tape 2, Monitor Tuner, Tape 1, Tape 2, Monitor Tuner, Tape 1, Tape 2, Monitor 200 mV, 47 KQ
Phono Phono Phono 2,5 mV, 47 КО
Ausgünge Outputs Sorties
2 Druckklemmen für zwei Laut- | 2 press-type terminal strips for two 2 barres a ressort pour deux paires
sprecherpaare, Ausgang 1 und Ausgang 2 | sets ot Speakers, output 1 and output 2 de hauts-parleurs, sortie 1 et sortie 2
schaltbar switched commutables 8-16 Ohm
13,5 V ~/500 mA
Fremdspannungsabstand
Spitzenwert über Fremdspannungsfilter
(DIN 45405)
bezogen auf Nennleistung
Tuner, Tape, Monitor
Unweighted signal-to-noise ratio
Peak value via external voltage filter
(DIN 45 405)
related to Nominal output
Rapport signal/bruit non-pondéré
Valeur de pointe aprés le filtre de
lension non pondérée (DIN 45 405)
ramené à la puissance nominale
Tuner, Tape. Monitor Tuner, Tape. Monitor 82 dB
Phono Phono Phono 64 dB
Gerüuschspannung gemessen nach IHF | Noise voltage measured in accordance | Tension pertubatrice mesurée selon IHF |
bewertet mit A-Filter (RMS) with ІНЕ pondérée avec filtre A (RMS), ramenée
bezogen auf Nennleistung weighted with A-filter (RMS) in à la puissance nominale
relation to rated power
Tuner, Tape. Monitor Tuner, Tape, Monitor Tuner, Tape, Monitor 95 dB
Phono Phono Phono 75 oB
Übersprechdümpfung Crosstalk attenuation Affaiblissement de diaphonie
bei 1000 Hz at 1,000 Hz pour 1000 Hz
zwischen den Kanálen between individual channels Entre les canaux 50 dB
zwischen den Eingangen between inputs Entre les entrées 68 dB
Leistungsautnahme (max.) Power consumption (maximum) Pulssance absorbée (maximale) 365 Watt
Netzspannungen
Line voltages.
Tensions du réseau
115 und 230 Vott
Dual GmbH :
920830 6/1283
Postfach 1144
: 7742 St. Georgen/Schwarzwald
Copyright by Dual

Dual CV 1260 Specifications

General

Brand	Dual
Model	CV 1260
Category	Amplifier
Language	English

Summary

Technical Specifications

Rated Output Power

Rated output power specifications for the device.

Frequency Response and Bandwidth

Frequency response and power bandwidth limits.

Input/Output Connector Details

Details on input/output connectors, impedance, and sensitivity.

Noise and Crosstalk Performance

Signal-to-noise ratio and crosstalk attenuation measurements.

Power Consumption and Voltages

Maximum power draw and operating voltage requirements.

Block Diagram and Component Identification

Overall Signal Path Block Diagram

Diagram illustrating the audio signal path and functional blocks.

Semiconductor Component Listings

Listings and diagrams of transistors and integrated circuits.

Circuit Diagrams: Input and Tone Control

Phono and Tuner Input Stage Schematics

Detailed schematic for phono and tuner input signal processing.

Tone, Loudness, and Balance Circuitry

Schematic of tone, loudness, and balance control circuitry.

Circuit Diagrams: Amplifier and Power Supply

Power Amplifier Output Stage Schematics

Schematic detailing the power amplifier output driver stages.

Protection and Power Supply Regulation Circuits

Circuitry for protection mechanisms and voltage regulation.

Component Layouts: ETC-525 Series Boards

ETC-525-1 to -525-3 Layouts

Component placement for ETC-525-1, -525-2, and -525-3 boards.

ETC-525-4 and -525-5 Layouts

Component placement for ETC-525-4 and -525-5 boards.

Component Layouts: ETC-506 Series Boards

ETC-506-1 to -506-3 Layouts

Component placement for ETC-506-1, -506-2, and -506-3 boards.

ETC-506-4 and -506-5 Layouts

Component placement for ETC-506-4 and -506-5 boards.

Wiring Diagram: Power and Primary Connections

Power Transformer Wiring Details

Diagram showing connections from the main power transformer.

ETC-506-4 to ETC-525-2 Wiring Schematic

Wiring schematic between ETC-506-4 and ETC-525-2 boards.

Wiring Diagram: Board-to-Board Interconnections

ETC-525-1 to ETC-506-3 Wiring Schematic

Wiring schematic connecting ETC-525-1 and ETC-506-3 boards.

ETC-525-3 to ETC-506-5 Wiring Schematic

Wiring schematic connecting ETC-525-3 and ETC-506-5 boards.

Adjustment Procedures and Calibration

Quiescent Current and Power Meter Calibration

Procedures for setting quiescent current and calibrating the power meter.

Alignment Potentiometer Locations

Identification of adjustment potentiometers (VRs) on the circuit boards.

Exploded View and Assembly Diagram

Chassis and Internal Component Layout

Diagram illustrating the physical assembly of the device's internal components.

Replacement Parts List: Control and Signal Path

Control Plates, Diodes, ICs, and Switches

Part numbers for control plates, diodes, integrated circuits, and switches.

Transistors, Resistors, and Potentiometers

Part numbers for transistors, resistors, potentiometers, and fuses.

Service Information: Input and Noise Specs

Input Specifications Summary

Summary of input types, impedances, and sensitivity.

Noise and Signal Ratio Specifications

Specifications for signal-to-noise ratio and crosstalk.

Circuit Diagrams: Pre-amp and Switching

Phono Pre-amplifier Circuit Details

Detailed schematic for the phono pre-amplifier stage.

Input Selector and Function Switch Circuits

Schematic for input selection and function switch circuits.

Wiring Schematics: Board-to-Board and Panel

ETC-525 Series Board Interconnections

Wiring diagrams detailing connections between ETC-525 series boards.

Input/Output Panel Connector Wiring

Wiring details for front and rear panel input/output connectors.

Signal Flow and Power Supply Block Diagram

Revised Block Diagram Overview

Updated block diagram showing signal flow and power supply distribution.

Replacement Parts List: Components and Hardware

Capacitors, Diodes, LEDs, and Fuses

Part numbers for capacitors, diodes, LEDs, and fuses.

Transistors, ICs, Knobs, and Hardware

Part numbers for transistors, ICs, potentiometers, knobs, and chassis hardware.

Manuals and Packaging

Part numbers for manuals and packaging materials.