Optonica SM-4100

Data

General

• Manufacturer: Optonica
• Model: SM-4100
• Year of manufacture: 1980
• Made in: Japan
• Color: silver / brown metallic
• Type: Analog
• Remote control: No
• Power consumption: 330 watts
• Dimensions: 430 x 75 x 382 mm (WxHxD)
• Weight: 7,7 Kg
• Original price approx.: 600,- DM

Connections

• Number of inputs:
  • Phono MM 2.3 mV/47 KOhm
  • Tuner, Aux, 2x Tape 150 mV/47 KOhm
  • Tape2 DIN 150 mV/47 KOhm
• Number of outputs:
  • 2x Rec-out 150 mV/47 KOhm
  • Rec-out DIN 60 mV/82 KOhm
  • Headphones
  • 2x loudspeaker

Technical Data

• Continuous power (at distortion factor)
  • 8 Ohm: 2x 33 Watt (DIN)

4 Ohm: 2x 40 Watt (DIN)

• Dynamic power
  • 8 Ohm: 2x 45 Watt
  • 4 Ohm: 2x 68 Watt
• Total harmonic distortion: 0.09%
• Attenuation factor: 20
• Frequency response: 10 - 65000 Hz
• Signal to noise ratio: 90 dB
• Stereo channel separation:
• Tone control:
  • Bass: ±10 dB at 100 Hz

Treble: ±10 dB at 10000 Hz

• Loudness: Yes
• High Filter: No
• Low Filter (Subsonic): 30 Hz/ 6 dB, switchable
• Mute: No
• Direct/Line-Straight: No

Special Features

• Mono/Stereo switch
• Tape dubbing tape 1>2

This amplifier is largely identical in construction to the SM-5200 model and is considered extremely rare. The SM-4100 was sold exclusively in Great Britain and Japan. The SM-4100 has only one tape connector in cinch design. Another tape device can be connected via a DIN socket.

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