Luxman Laboratory Reference Series 5L-15

Data

General

• Manufacturer: Luxman
• Model: Laboratory Reference 5L-15
• Type: DC Stereo Integrated Amplifier
• Years of manufacture: 1977 - 1982
• Made in: Japan
• Color: Silver
• Power consumption: 380 W
• Dimensions (WxHxD): 442 x 146 x 400 mm
• Weight: 13.3 kg
• Original price approx.: 168'000 Yen (Japan, 1977), 995 US-$, 2'400 DM

Connections

• Number of inputs:
  • Phono MM 1: 2.7 mV (subsonic switchable).
  • Tuner: 300 mV
  • Aux 1,2: 300 mV
  • Tape 1: 300 mV
  • Tape 1 DIN:
  • Tape 2: 300 mV
  • Main In: 300 mV
• Number of Outputs:
  • Pre Out: 300 mV
  • Tape 1 Rec Out: 300mV
  • Tape 1 DIN:
  • Tape 2 Rec Out: 300mV
  • 2 x Loudspeaker
  • 1 x headphone jack

Technical Data

• Continuous power (at THD)
  • 8 Ohm: 2 x 80W (10 Hz - 20 kHz, 0.02% THD)
  • 4 Ohm: 2 x 120W DIN
• Dynamic power
  • 8 Ohm:
  • 4 Ohm:
• Total harmonic distortion: < 0.02%
• Attenuation factor: 80 at 8 Ohm
• Frequency response:
  • Phono: 20 Hz - 20'000 Hz, ±0.2dB
  • Tuner, AUX: 5 Hz - 200'000 Hz, 0.5dB
• Distortion factor: <0.02%
• Signal-to-noise ratio:
  • Phono: 80dB
  • Tuner, AUX 1 & 2: 100dB
  • Tape 1 & 2: 100dB
• Volume attenuator: adjustable from -40 dB to - 15 dB
• Loudness: no
• High Filter: no
• Low Filter (Subsonic): no

Special Features

• Real Time Processed DC Stereo Amplifier
• Function indicator lamp: "White" = Normal operation, "Red" = DC Offset
• Mono - Stereo - Reverse - Switch
• Volume attenuator switchable: Preset (adjustable from -40 dB to - 15 dB), Off, Signal Off
• VU meter separately for left and right channel
• Sensitivity selector switch for VU meter: 0 dB, - 10 dB
• Switch on rear panel for loudspeakers: "Direct Coupling - General Speaker", "Input Capacitor - Elektrostatic Speakers
• Separable pre- and power amplifier
• Output for peak LED display

Remarks

• 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:
  • 5C-50 Preamplifier
  • 5M-21 Power Amplifier
  • 5T-50 Tuner
  • 5F-70 Tone Control
  • 5G-12 Equalizer
  • 5E-24 Level Meter
  • 5L-15 Integrated Amplifier
  • 5M-20 Power Amplifier
  • 5T-10 Tuner
  • 5K-50 Tape

Pictures

• [[Luxman Laboratory Reference Series 5L-15 Front

• Luxman Laboratory Reference Series 5L-15 interior view

• Luxman Laboratory Reference Series 5L-15 rear view

• Luxman Laboratory Reference Series brochure image

Links

• External Link: "Hifi Archive" website: [1]

• External Link: "Hifi Archive" website: [2]

• External Link: "The Vintage Knob" website: [3]

• External link: Audio Heritage, Japan website: [4]

• Luxman product overview: Luxman