Luxman Laboratory Reference Series 5M-20
Data[edit]
General
- Manufacturer: Luxman
- Model: Laboratory Reference 5M-20 (identical to 5M-21, but without VU meter)
Type: DC Stereo power amplifier
- Years of manufacture: 1977 - 1982
- Made in: Japan
- Color: Silver
- Power consumption: 450 W
- Dimensions (WxHxD): 442 x 146 x 400mm
- Weight: 18.8 kg
- Original price approx.: 210'000 Yen (Japan, 1977), 1095 US-$, 2'950 DM
Connections
- Number of inputs:
- Direct in: 890mV, 50 kOhm
- Number of outputs:
- 2 x loudspeaker
1 x headphone jack
Technical Data
- Continuous power (at THD)
- 8 Ohm: 2 x 100W (10 Hz ... 20 kHz, 0.005% THD)
- 4 Ohm: 2 x 150W DIN
- Dynamic power
- 8 Ohm:
- 4 Ohm:
- Total harmonic distortion: < 0.005%.
- Attenuation factor: 80 at 8 Ohm
- Frequency response: 0 - 100'000 Hz (- 1 dB)
- Signal to noise ratio: >120 dB
- Crosstalk attenuation: - 70 dB (20 Hz ... 20 kHz)
- Noise voltage:
Special Features
- Real Time Processed DC Stereo Power Amplifier
- Function indicator lamp: "White" = Normal operation, "Red" = DC Offset
- Separate level controls L / R on rear panel
- Switch on rear panel for loudspeakers: "Direct Coupling - General Speaker", "Input Capacitor - Elektrostatic Speakers
- Output for peak LED display
Remarks[edit]
- The Luxman Laboratory Reference Series made its debut in 1976.
- Highlights included the first Real Time Processed DC amplifier and the first synthesizer tuner.
- Other components of the Laboratory Reference Series included the 5C-50 preamplifier and the 5M-21 power amplifier, the 5G-12 Graphic Equalizer, the 5F-70 Parametric Tone Control, and the 5E-24 LED Level Meter Unit.
- In 1977 and 1978, the Luxman Laboratory Reference Series was expanded to include the 5L-15 integrated amplifier, the 5M-20 power amplifier without VU meter, and a less expensive tuner, the 5T-10, and the 5K-50 cassette tape deck, the latter of which was probably obtained from a third-party manufacturer.
- The functionality, performance and innovative design made the series unique and distinctive.
- Special features were:
- World's first DC amplifier and synthesizer tuner.
- Computer controlled cassette deck
Stackable components (the 4 device feet had corresponding recesses with the device standing underneath)
- Other models in the same series:
Pictures[edit]
- [[Luxman Laboratory Reference Series 5M-20 Front
- Luxman Laboratory Reference Series description from Luxman USA
Reports[edit]
- External report: "Hifi Studio" website: [1]
Links[edit]
- External link: "The Vintage Knob" website: [2]
- External link: Audio Heritage, Japan website: [3]
Luxman Product Overview: Luxman