Rotel RSS-900 Speaker Selector, 2004-2006, made in Taiwan

 

Link: rotel  | Owner's Manual

Rotel's RSS-900 answers the dilemma faced by many audiophiles seeking a combination of multi-speaker convenience in addition to accurate and transparent signal transfer from an amplifier to a single pair of high resolution speakers. Five pair of speaker outputs benefit from Rotel's unique Impedance and Anti-capacitance Compensation to preserve sound quality while protecting your power amplifier from the potentially difficult conditions that can otherwise arise when driving multiple pairs of loudspeakers. The sixth output pair ("Direct"), designed for the main system speakers, has minimal effect on the critical amplifier-loudspeaker interface. The RSS-900 provides yet another example that Rotel's Balanced Design concept brings you convenience without sonic penalty.

Rotel RX-803 AM/FM Stereo Receiver, 1977, made in Japan

Link: radiomuseum | hifiengine | hifi-wiki | rotel.com [Owner's Manual] | service manual elektrotanya [Service Manual]

General

• Manufacturer: Rotel
• Model: RX-803
• Years of construction: 1976 - 1981
• Made in: Japan
• Color: silver, metal case with handles
• Remote control: no
• Power consumption:
• Dimensions (WxHxD): 490 x 145 x 430 mm
• Weight: 16 kg
• New price approx .: 550 US $, 1,800 DM

connections

• Number of inputs:
  • Phono MM: 2 mV, 50 kOhm
  • Aux: 150 mV, 50 kOhm, max. 15 V
  • Tape Play 1, 2: 150 mV, 50 kOhm, max. 15 V
  • Main In: 1.5 V, 50 kOhm
  • Antenna FM (75/300 Ohm), MW (300 Ohm)
• Number of exits:
  • Tape Rec 1, 2: 350 mV, 3.3 kOhm
  • Tape Rec DIN: 120 mV, 90 kOhm
  • Pre Out:
  • Headphone:
  • 2 pairs of speakers

Technical specifications

amplifier

• Continuous output (with distortion factor)
  • 8 ohms: 2x 80 watts (20 Hz - 20,000 Hz)
  • 4 ohms: 2x 120 watts (1 kHz)
• Dynamic performance
  • 8 ohms:
  • 4 ohms:
• Frequency response: 5 Hz - 40 kHz, ± 3 dB, 8 ohms, both channels rated power
• Total harmonic distortion: <0.1%
• Damping factor: 80 at 8 ohms
• Signal-to-noise ratio:
  • Phono MM: 75 dB
  • High level: 90 dB
• Tone control
  • Bass: ± 10 dB at 100 Hz
  • Treble: ± 10 dB at 10 kHz
• Loudness: + 10 dB at 100 Hz / + 3 dB at 10 kHz
• High filter: - 12 dB / octave at 8 kHz
• Low filter (subsonic): - 12 dB / octave at 15 Hz
• Muting: 0 dB, - 15 dB

tuner

• Reception: FM, MW
• Frequencies:
  • FM: 87-108 MHz
  • MW: 525 - 1'605 kHz
• Frequency response: 30 - 15,000 Hz, ± 0.5 dB
• Input sensitivity: 1.5 µV (IHF)
• Total harmonic distortion: 0.3% (mono), 0.5% (stereo)
• Signal-to-noise ratio:
  • Mono: 70 dB
  • Stereo: 65 dB
• Channel separation: 47 dB
• Selectivity: 75 dB
• Single frequency selection: 1.5 dB
• Spurious selection:> 90 dB
• Image frequency attenuation:> 100 dB
• IF attenuation:> 100 dB (at 98 MHz)
• AM suppression: 60 dB

Special equipment

• Tape dubbing
• Muting

New Lamp's

Rotel RA-913 Stereo Integrated Amplifier, made in Japan

Link: hifiengine

Specifications
Power output: 60 watts per channel into 8Ω (stereo)
Frequency response: 8Hz to 40kHz
Total harmonic distortion: 0.3%
Damping factor: 50
Input sensitivity: 2mV (MM), 150mV (DIN), 150mV (line)
Signal to noise ratio: 75dB (MM), 95dB (line)
Output: 330mV (line), 100mV (DIN), 0.8V (Pre out)
Speaker load impedance: 4Ω to 16Ω
Dimensions: 480 x 150 x 375mm
Weight: 11.5kg

Downloads
instruction/owners manual
service manual

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