Luxman T-105 (1985)

Name: Luxman T-105
Brand: Luxman

A forgotten FM/AM tuner from Luxman's Brid series, built like a tank and engineered to pull in every whisper on the broadcast band.

Overview

The Luxman T-105 was released in March 1985. It is a digital synthesized FM/AM tuner and the top model of Luxman's Brid series, a line that quietly pushed what consumer tuners could do. Plenty of vintage audio fans fixate on amplifiers and turntables, but high fidelity often starts at the antenna, not the speaker. The T-105 was engineered with that in mind.

It was sold as both Luxman and ALPINE/LUXMAN T-105. Alpine's ownership didn't dilute Luxman's commitment to precision. This was no rebadged budget unit. The T-105 carried forward Luxman's reputation for over-engineering and packed a lot of advanced features into a sleek, minimalist chassis. It wasn't flashy, but inside it had a super wide FM detector, a dual MOS-FET RF stage, and a high-energy PLL circuit designed to lock onto weak signals. For anyone who still listens to FM, especially where reception is marginal, it's functional even today.

Specifications

Type	FM/AM Tuner
FM Practical sensitivity (IHF)	0.9 μV (75 Ω) 1.8 μV (300 Ω)
FM 10.3dBf quieting sensitivity	1.75 μV (75 Ω) 3.5 μV (300 Ω)
FM Signal-to-noise ratio	mono:77dB stereo:75dB
FM Frequency characteristic	20 Hz to 15 kHz ± 0.5 dB or less
FM Distortion factor	mono:0.09%(1kHz) stereo:0.15%(1kHz)
FM Selectivity	70 dB (75 kHz dev. / ± 400 kHz)
FM IF interference ratio	100 dB or more
FM Image interference ratio	80 dB or more
FM Stereo separation	50dB(1kHz) 45dB(100Hz) 30dB(10kHz)
FM Muting level	5 μV
FM Output voltage	630mV(100%mod.)
AM Practical sensitivity (IHF)	53dB/m
AM Signal-to-noise ratio	50dB
AM Distortion factor	0.3%
AM IF interference ratio	50dB
AM Output voltage	250mV
Power consumption	10W
External dimensions	Width 438 x Height 85 x Depth 244 mm
Weight	3.0kg

Key Features

Digital Synthesis & High-Energy PLL Front End

The T-105's digital synthesized tuning was about precision, not just convenience. Luxman used a high-energy PLL (Phase-Locked Loop) circuit in the front end to keep reception stable and drift-free, even with weak signals. Cheaper analog tuners hunt and jitter. The T-105 locked on instantly and stayed put, because the design put signal integrity first, starting at the first stage.

Super Wide FM Detector

One of the T-105's most impressive technical feats was its super wide FM detector. It could directly detect 10.7 MHz IF signals with linear performance across a bandwidth exceeding 5 MHz. Standard FM modulation requires about 150 kHz of bandwidth, so the detector had more than 30 times that capacity. The headroom wasn't for show. It gave cleaner demodulation, reduced distortion, and a more faithful reproduction of the broadcast signal, especially under challenging reception conditions.

S.T.A.R. Circuit for Silence Reproduction

Luxman borrowed the S. T. A. R. circuit from its Brid series amplifiers and applied it here to improve the reproducibility of sound silence.

In practice, this meant a blacker background, deeper channel separation, and a more convincing sense of space. Those details matter when you're trying to hear the subtle decay of a hall's reverb or the faint rustle of a microphone stand on a live broadcast.

Dual MOS-FET RF Stage with Spectrum AGC

The RF stage used a dual MOS-FET configuration, chosen for its low noise and high input impedance, paired with a spectrum AGC (Automatic Gain Control) circuit. The AGC adjusted gain based on signal strength and spectral content. It prevented overload from strong stations and boosted sensitivity for weak ones, without the pumping artifacts common in simpler AGC designs.

CS Filter and AM Oscillator Auto-Level Control

Interfering beats, those annoying heterodyne whistles between stations, were tamed by a dedicated CS filter.

On the AM side, the local oscillator had auto-level control. It stabilized performance across varying signal strengths and reduced distortion, a common weak point in AM tuners of the era.

16 Presets and Memory Scan

For 1985, 16 programmable presets for FM and AM stations were generous. The tuner also has Memory Scan, which automatically searches only previously stored frequencies, so you can cycle through your favorite stations without wading through static.

Collectibility & Value

The Luxman T-105 is described as a "rare tuner," and the market data is limited. An auction listing from December 11, 2019, estimated a lot containing a Luxman LV-105U amplifier and the T-105 tuner at $464. Separately, a used T-105 was listed for sale at €145 on October 1, 2025, according to a listing monitored by HifiShark. These figures suggest it's not a high-value collector's item like some Luxman tube gear, but it's not disposable either. Enthusiasts are still seeking it out. Given its technical sophistication and solid build, it's a sleeper pick for building a complete Brid series system or restoring a period-correct 1980s rig.