Luxman L 507F (2001)
A high-end integrated amplifier from Luxman's f-Series, released in 2001 with advanced circuitry and modular expandability.
Overview
The Luxman L-507F is an integrated amplifier released in October 2001 as part of Luxman's premium f-Series. It's a pre-main, so the preamplifier and power amplifier share one chassis. You can upgrade it into a separate system with external power or control amplifiers. It supports bi-amping and multi-amping. It has a wireless remote control and an unswitched AC outlet for powering other components.
Specifications
| Continuous effective output | 130W + 130W (8 Ω) |
| Total harmonic distortion factor | 0.005% or Less (8 Ω, 1 kHz, Both Channel Operation, Line Straight on) |
| Total harmonic distortion factor | 0.03% or less (8 Ω, 20 Hz to 20 kHz, Line Straight on) |
| Input Sensitivity / Impedance Phono MM | 2.5mV/47k Ω |
| Input Sensitivity / Impedance Phono MC | 0.3mV/100 Ω |
| Input Sensitivity / Impedance Line | 180mV/42k Ω |
| Input Sensitivity / Impedance Recorder | 180mV/42k Ω |
| Input Sensitivity / Impedance Bal. LINE | 180mV/79k Ω |
| Input Sensitivity / Impedance BAL. CD/DVD-A | 180mV/79k Ω |
| Input Sensitivity / Impedance Main in | 1V/51k Ω |
| Output voltage Recorder | 180mV |
| Output voltage Pre out | 1V |
| S/N ratio (IHF-A correction, Line Straight on) Phono MM | 91 dB or more (5 mV input) |
| S/N ratio (IHF-A correction, Line Straight on) Phono MC | 75 dB or more (0.5 mV input) |
| S/N ratio (IHF-A correction, Line Straight on) Line | 106 dB or more (input short circuit) |
| Frequency response (Line Straight on) Phono MM | 20 Hz to 20 kHz ± 0.5 dB |
| Frequency response (Line Straight on) Phono MC | 20 Hz to 20 kHz ± 0.5 dB |
| Frequency response (Line Straight on) Line | 20 Hz to 100 kHz -3dB or less |
| Tone control Bass | ± 10 dB (100 Hz) |
| Tone control Treble | ± 10 dB (10 kHz) |
| Loudness control 100 Hz | + 7 dB (+ / - 1 dB) |
| Loudness control 10 kHz | + 5 dB (+ / - 1 dB) |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Power consumption | 285W |
| External dimensions | Width 467x Height 179x Depth 440 mm |
| Weight | 22.5kg |
| Original price | ¥ 300,000 |
Design
The power amplifier section uses Luxman's ODNF (Optimal Discrete Non-feedback) circuit, also found in the M-7f and C-7f. The signal path is ultra-wide-band, high-slew rate and low-distortion, and it needs no phase correction. There are no DC servo amplifiers for ultra-low frequency control. The chassis is thick and vibration-resistant, with isolated blocks shielded by plates to prevent interference. Power transformers, capacitors and amplifier sections sit apart from each other in a BOX structure. Internal filtering is reinforced against flux interference and external noise. Luxman made custom parts for it: carbon film resistors, power transformers, block and electrolytic capacitors, copper bus bars and high-purity cabling. Inputs are both RCA and balanced. The large proprietary speaker terminals take banana plugs and Y lugs. The front panel has a logarithmic compression power meter with an 8 mm acrylic face, and the chassis has a precision hairline finish.
Context
The L-507F belongs to Luxman's f-Series, a line developed with a complete circuit and design overhaul from earlier integrated models. It's built for system expansion, so it can join other power and control amplifiers in a fully separated setup. Adding external power amplifiers also lets it run bi-amp or multi-amp. For home theater use, the optimal volume setting is -14dB on the main control.
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