Marantz 2250 Receiver
Manufacturer:
Model:
2250
Date:
0
Category:
Group:
Description:
STEREOPHONIC RECEIVER
Information
TECHNICAL SPECIFICATIONS Amplifier Section: RATED POWER OUTPUT................................................................................ 50 Watts per channel, Continuous Average Power, both channels driven. Power Band....................................... . . . ...................................................................... 20 Hz to 20 kHz Total Harmonic Distortion ............................................................................................................... 0.3% Load Impedance............................................................................................................................ 8 ohms Intermodulation Distortion at Rated Power....................................................................................0.25% Damping Factor .................................................................................................................................. 55 Frequency Response .................................................................................. 20 Hz to 20 kHz ±0.5 dB Preamplifier Section: Phono: Dynamic Range .......................................................................................................................... 96 dB NOTE: Dynamic Range is the ratio in dB of the phono input overload to equivalent input noise. Equivalent Input Noise ........................................................................................................... 1.5 μν Input Overload ....................................... ............................................................................. 100 mV Sensitivities (for rated power output) Phono......................................................................................................................................... 1.8 mV Tape .......................................................................................................................................... 180 mV Main In ............................ Frequency Response (phono) ............................ 1.5 V 30 Hz to 15 kHz ±1.0 dB Input Impedances Phono.................................................................................................................................. 47 K ohms Aux or Tape ....................................................................................................................... 100 K ohms Main In ............................................................................................................................... 30 K ohms Tape Output Level ...................................................................................................................... 775 mV Ref.: 7.75 mV at phono input Signal to Noise Ratio Aux Input ............................................................................................................................... · ■ 85 dB Phono Input ............................................................................................................................... 75 dB Tone Controls Bass: 100 Hz............................................................................................................................. ±10 dB Tone Mode at 250 Hz................................................................................................. ± 3 dB Mid: 700 Hz ........................................................................................................................±7.5dB Treble: 10 kHz............................................................................................................................. ±10 dB . Tone Mode at 4 kHz ................................................................................................. ± 3 dB FM Tuner Section: IHF Usable Sensitivity .................................................................................................................. 2.5 /xV Sensitivity (DIN) ..............................................................................................................................2.1 μν Selectivity (alternate carrier) ......................................................................................................... 60 dB Quieting Slope RF Input for 30 dB Quieting .................................................................................................... 1.9 μν Quieting at 5 μν RF Input......................................................................................................... 55dB Quieting at 10 μν RF Input ................................................................................................... 60 dB Quieting at 50 μν RF Input .................................................................................................... 70 dB Total Harmonic Distortion Mono:............................................................................................................................................. 0.3% Stereo:............................................................................................................................................. 0.4% Capture Ratio................................................................................................................................... 1.5 dB Stereo Separation at 1 kHz............................................................................................................. 40 dB Spurious Rejection ........................................................................................................................ 95 dB Image Rejection ............................................................................................................................... 70 dB IF Rejection........................................................................................................................................ 90 dB AM Suppression ............................................................................................................................... 55 dB AM Tuner Section: Sensitivity ....................................................................................................................................... 20 μ V General: Power Requirements . ....................................................................... 110/120/220/240 V AC, 50 Hz Power Consumption at rated output, both channels operating...................................................................................... 220 Watts Idling Power (Volume Control at zero) ................................................................................ 35 Watts Dimensions: Panel Width ............................................................................................................................... 43.1 cm Panel Height ........................................................................................................................... 13.6 cm Depth ........................................................................................................................................ 35.6 cm Weight: Unit Alone............................................................................................................................... 15.3 kg Packed for Shipment........................................................................................................... 18.3 kg

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Service Manual
Manual type:
Service Manual
Pages:
42
Size:
3.17 Mbytes (3325761 Bytes)
Language:
english
Revision:
Manual ID:
Date:
Quality:
Scanned document, all readable.
Upload date:
08 March 2015
MD5:
f8669272385eb4dc504601d9ec561dcb
Downloads:
324
Information
Introduction ... 1 P.W. Board ... 1 Test Equipment Required for Servicing ... 2 This service manual was prepared for use by Authorized Warranty Stations and contains service information for Marantz Model 2250 Stereophonic Receiver. Servicing information and voltage data included in this manual are intended for use by the knowledgeable and experienced technician only. All instructions should be read carefully. No attempt should be made to proceed without a good understanding of the operation of the Receiver. The parts list furnishes information by which replacement parts may be ordered from the Marantz Company. A simple description is included for parts which can usually be obtained through local suppliers. AM Alignment Procedure ... ... 2 FM Alignment Procedure ... 3 Stereo Separation Alignment ... 3 Muting Circuit Alignment ... 3 Dolby FM Tape Output Setting ... 4 Audio Adjustment ... ... 4 Technical Specifications (for U.S.A. Model) ... 25 Parts List ... , ... 38 Technical Specifications (for European Model) ... 38

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