Realtime Processed DC Integrated Amplifier L-11

Luxman, Lux Corp.; Kinsuido of Osaka

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  • Year
  • 1977–1982 ?
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 366812

 Technical Specifications

  • Number of Transistors
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC)
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 200 W (undistorted)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Realtime Processed DC Integrated Amplifier L-11 - Luxman, Lux Corp.; Kinsuido of
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 438 x 125 x 395 mm / 17.2 x 4.9 x 15.6 inch
  • Notes

  • The Luxman L‑11 is a high‑end integrated amplifier from the company’s Laboratory Standard Series, introduced around 1978. It features Luxman’s “Realtime Processed DC” design philosophy, aimed at maintaining DC integrity throughout the signal path to minimize phase shift and achieve wide‑bandwidth, low‑distortion performance.

    The L‑11 includes an advanced phono stage, a four‑position linear equalizer instead of conventional tone controls, and a dedicated mode for driving electrostatic loudspeakers. Its build quality, smooth control feel, and understated industrial design make it a sought‑after model among collectors and vintage audio enthusiasts.

    For MC (moving coil) phono a plug-in transformer is required.

    Key Technical Specifications

    Power & Performance

    • 100 W per channel into 8 Ω (20 Hz–20 kHz, ≤0.02% THD)
    • 155 W per channel into 4 Ω (DIN)
    • Frequency response:
      • High‑level inputs: 10 Hz–90 kHz
      • Phono: 20 Hz–20 kHz ±0.2 dB
    • Total harmonic distortion: 0.015–0.02%
    • Signal‑to‑noise ratio:
      • Phono: >92 dB
      • Line: >100 dB

    Inputs & Outputs

    • Phono 1 (MM)
    • Phono 2 (MM / MC via optional transformer)
    • AUX 1, AUX 2, Tuner, Tape 1, Tape 2
    • Pre‑out / Main‑in (1.6 V)
    • Two speaker zones (relay‑switched)
    • Headphone output

    Notable Features
    Linear Frequency Equalizer
    Instead of conventional bass/treble knobs, the L‑11 uses a four‑position linear equalizer offering two “up‑tilt” and two “down‑tilt” curves—an audiophile‑oriented approach to tonal shaping.

    Additional Functions

    • Subsonic (low) filter
    • Low‑boost circuit
    • Electrostatic speaker mode
    • Dual tape monitor & dubbing
    • Overcurrent & DC‑sensing speaker protection
    • 4‑gang volume control
  • Net weight (2.2 lb = 1 kg)
  • 18.5 kg / 40 lb 12 oz (40.749 lb)
  • Mentioned in
  • -- Original prospect or advert
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Instruction & Owners Manual, ME0093-1078-0)

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