Luxman L-450 (1980)
The Luxman L-450 is a Japan-market integrated amplifier from the early 1980s. It sits in the L-series between the L-420 below it and the L-480 above. It was the affordable way into Luxman ownership, though by most accounts the build quality was better than the price suggested. The L-480 shared the same chassis but was rated higher. The L-450 itself rarely shows up on the secondhand market today, and the L-480 is considerably more common.
The spec sheet has a few conflicts, depending on which source you read. The service manual and HiFi Engine both list 40W RMS per channel into 8 ohms (20Hz-20kHz, both channels driven). The Vintage Knob claims 50W/ch. The manufacturer's figure of 40W is the safer number. THD is split too: 0.05% at rated output in one manual, 0.1% at 1kHz in the service manual. Frequency response is 20Hz-20kHz ±0.5dB. Weight is disputed as well, at 8.8kg per HiFi Engine and 7.5kg per Audio Database. The phono stage is MM-only. Some listings suggest MC capability, but the manual specifies 2.5mV for MM and there is no MC headamp on this model.
Inside, the L-450 is a DC-coupled, direct-coupled design with an all-discrete phono stage on a single-board PCB. A large toroidal transformer feeds the output stage. The volume control is a motorized ladder-type pot, which is unusual at this price point. Loudness compensation is switchable at -30dB. The rear panel has phono (MM), tuner, aux, and two tape loops, plus A/B speaker switching. Dimensions are 438mm × 138mm × 320mm.
Audio (1983, p.61) covered the L-450 in its integrated amplifier section.
Released in 1980 at 49,800 yen, the L-450 was mostly sold domestically and never exported widely. The Vintage Knob calls it an anomaly from Luxman's early-'80s downturn, with build quality far above its price point. Owners commonly complain about four things: the speaker protection relay failing (a scarce NEC part shared with other Luxman models), undersized heatsinks that run hot with 4-ohm loads, a phono stage that picks up hum, and faceplate lettering that wears off. The phono stage is generally considered the weakest link, noisy compared to a separate preamp, though the mids are reportedly detailed. DC offset is adjustable via solder bridges on the front of the PCB. Both owner's and service manuals circulate freely as PDFs.
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