The Luxman K-109 was released in October 1985 as part of the Alpine/Luxman Bridd series. It was positioned as a serious high-performance cassette deck, built around a three-head configuration and a precision transport system designed to improve tape stability, recording accuracy and playback consistency.
At the centre of the Luxman K-109 was Luxman’s GT transport mechanism. This system used a structure in which the capstan bearing and pinch roller bearing were integrated with the motor frame chassis, helping to keep the capstan shaft and pinch roller shaft accurately aligned. This arrangement supported the deck’s dual capstan tape path and was intended to maintain stable tape movement across the heads.
The head system in the Luxman K-109 used separate record, playback and erase functions. The recording head was a 3 μm-gap Sendust head made from three layers of Sendust material, selected for high-frequency recording performance. The playback head used a 0.8 μm-gap HIP-ferrite design, while the erase head used a dual-gap Sendust/ferrite composite construction for more complete erasure.
The Luxman K-109 included manual calibration, allowing bias, level and equalisation to be adjusted for the tape being used. This was a key feature for users who wanted to optimise the deck for different cassette formulations rather than rely entirely on automatic settings. It also included automatic functions such as auto monitor, auto tape selector, music search and time memory.
Noise reduction in the Luxman K-109 was provided by Dolby B and Dolby C. The equaliser circuit also included a 50 μs metal position in addition to the conventional 70 μs metal position. This setting was designed to reduce noise in the middle and high frequencies when using metal tape.
Performance figures were strong for a cassette deck of its period. With metal tape, the quoted frequency response extended from 20 Hz to 23 kHz, while wow and flutter was specified at 0.022% or less WRMS. Signal-to-noise ratio with Dolby C was rated at 73 dB or more for metal and chrome tape, and 71 dB or more for normal tape.
The Luxman K-109 remains a notable deck from the Alpine/Luxman era because it combined advanced transport engineering, a proper three-head layout, manual calibration and high-grade tape compatibility in a substantial 9.3 kg chassis. It was not a lightweight consumer cassette recorder, but a carefully engineered machine aimed at users who wanted high cassette recording and playback performance.
Features
- Three-head stereo cassette deck design
- GT transport mechanism
- Dual capstan tape transport system
- Soft-touch logic control operation
- Separate recording, playback and erase head functions
- 3 μm-gap Sendust recording head
- 0.8 μm-gap HIP-ferrite playback head
- Dual-gap Sendust/ferrite composite erase head
- Manual calibration for bias, level and equalisation
- Dolby B and Dolby C noise reduction
- 50 μs metal equaliser position
- Auto monitor function
- Auto tape selector
- Music search function
- Time memory function