Apparecchiature informatiche

Lafayette LR-120DB Ricevitore
Produttore:
Modello:
LR-120DB
Data:
1978
Categoria:
Gruppo:
Descrizione:
AM/FM Stereo Receiver

Informazioni

The Lafayette LR-120DB is a highly sophisticated solid-state stereophonic high fidelity TV Multimedia">Receiver that combines an AM tuner, a highly sensitive FM stereo tuner, and a high quality integrated stereo TV Multimedia">Amplifier in one single, handsomely styled unit. The TV Multimedia">Receiver not only offers all the advantages expected from solid-state circuitry such as instant operation, low current consumption, and cool operation, but also provides extremely low distortion and noise, plus wide frequency response at its full rated power to ensure the finest sound reproduction. Stereo inputs have been provided for reproduction from a wide variety of external program sources that you may wish to use — a record players, tape recorders, tape players, etc. Some of the special features that have been incorporated in this TV Multimedia">Receiver to ensure a high degree of performance and to provide complete flexibility of operation are as follows: * 75 ohm and 300 ohm antenna inputs for FM. * Sensitive dual-gate MOS FET in the FM RF section with 4-section variable capacitor. * Two 2-element ceramic filters and 6-pole Linear Phase LC Block Filter used in the IF section for high selectivity. * PLL [Phase Lock Loop) IC used in the FM stereo decoder section for optimum stereo performance with minimum distortion. * A newly-developed IC functioning as an IF amplifier, a low-distortion Quadrature FM detector, a driver for the tuning meters, and as a sophisticated FM muting circuit which not only eliminates noise between stations on FM in the conventional manner, but also silences the TV Multimedia">Receiver when not properly turned to a station. * Dual Tuning Meters used — a conventional signal strength meter plus an FM center-tuning meter for precise tuning. * Power Output Meters are provided for both channels to allow reading of average power with the aid of Meter Range Button. * Built-in Dolby Noise reduction circuit for decoding Dolby FM broadcasts. * Two sets of magnetic phono inputs accommodating a range of cartridge output levels from 2.5mV to 600mV (for rated power output). * A single TV Multimedia">Microphone input controlled by a mic on-off switch and level control for convenient mixing with other program sources. * Two-position turnover frequency switches for Bass and Treble controls. * Direct-coupled OCL power TV Multimedia">Amplifier stages. * TV Multimedia">Amplifier output stages protected by a dual system of relay and electronic overload protection circuitry. * FM Mute Level Control — adjusts the FM muting level. * Audio-Mute Switch — reduces TV Multimedia">Receiver volume to one of two low levels (~15dB, —30dB). * Quick-connect output terminals for up to three sets of stereo speakers. * Antenna Attenuate Switch — Acts as a Local-Distance Switch. * 2-position Low Frequency Filter Switch (15 or 70Hz). * 2-position High Frequency Switch (7 or 12kHz). * Dual Tape Monitoring facilities plus special dubbing switch to permit recording from one TV Multimedia">Tape recorder onto another in either direction. 4 In order that you may benefit from the many operating and performance features designed into this receiver, we recommend that you carefully read all the instructions contained in this manual. Also, we suggest that you keep the manual close at hand and in a safe place so that you can refer to it when necessary.

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Servizio e manuale utente
Tipo manuale:
Servizio e manuale utente
Pagine:
67
Dimensione:
16.72 Mbytes (17532683 Bytes)
Lingua:
english
Revisione:
ID del manuale:
21-03109HW
Data:
Qualità:
Documento scansionato, tutto leggibile.
Data di aggiunta:
05 settembre 2015
MD5:
99a219e1acecab1e82243549e9e3279b
Downloads:
842

Informazioni

GENERAL DESCRIPTION ... 4 INSTALLATION ... 6 AC Power ... g Convenience Outlets ... g Ground Connection ... g ANTENNAS ... g AM ... g FM ... 6 FM Antenna Attenuate Switch ... 8 CONNECTING YOUR ASSOCIATED EQUIPMENT ... 9 Loudspeakers ... 9 Impedance of Speakers Used ... 11 Stereo Headphones ... 13 Connecting a Stereo Record Player ... 13 Stereo Tape Recorder Connections ... <12 Connecting an 8-Track Stereo Tape Player ... 15 DESCRIPTION OF RECEIVER CONTROLS ... 15 OPERATING PROCEDURES ... 20 Tuning in FM Stereo ... 21 Interference on FM ... 21 Reducing Noise on FM Stereo ... 21 A Quick Guide to Operating Your Stereo Receiver ... 22 Operation of the FM Mute Circuit ... 23 Adjusting the FM Muting Level ... 24 Adjusting Phono Input Sensitivity on the Receiver ... 24 Stereo Tape Recorder Operation ... 25 Recording/Playback using one tape recorder ... 25 Simultaneous Recording [two recorders connected] ... 25 Dubbing or Duplicating [two recorders connected] ... 25 Recording on one tape recorder while playing tape on another ... 26 Playback [two recorders connected] ... 27 8-Track Tape Player Operation ... 27 Microphone Operation ... 27 Bass and Treble Turnover Switch Action ... 27 Speaker Phasing ... 28 Power Overload Safeguard System ... 29 TROUBLE-SHOOTING GUIDE ... 30 RETURNING THE UNIT FOR SERVICE ... 30 Shipping Instructions ... 31 TECHNICAL SPECIFICATIONS ... 32 INSERTS [1] Schematic Diagram/Interior Parts Location/PC Board Diagrams. [2] Operating Chart. [3] Front Panel Operating Controls/Connecting Associated Equipment.

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