Luxman D-109

September
1 9 8 6 september 1986
1 9 8 8 1988

Rare semi-big CD player for once not based on a Toshiba OEM chassis and parts but centered around a Sony pre-BU-1 drive - as used in the CDP-555ESD for instance.
Luxman just after the D-109 would make a DAT recorder, the KD-117, based on the Sony DTC-1000ES...

The important rest of the D-109 however doesn't come from Sony : NPC digital filter and Burr Brown PCM56P d/a converter.
The not so important rest, display, remote etc, was sourced from all over the place : Luxman's traditional business was amplifiers, not digital digitalia.

Inside, alas never shown, is a beefy power supply section with 21,000µF of smoothing caps assorted with "high-speed and high-capacity fast recovery rectifier diodes", a fair amount of regulations (two just for the d/a section), three shielded sub-chassis (drive+PS / digital section / analogue section).

The digital filter is of the FIR (Finite Impulse Response) to "eliminate ultrasonic digital noise from the final audio output signal" which, with 2x oversampling, displaces the remaining noise far above the audio band while giving the brickwall filter a smoother angle. The coaxial digital output is switchable from the front.

The rest is sadly all black with mutiple buttons all over and a million useless programming modes - 1986.
Made to feed in direct digital link (or analogue) the LV-109 big black bong.

One thing worth mentionng is that, in late 1986, Luxman maintained the "sub-code output" of the early days and mentioned that it would still be used for "connection of a decoder for future video displays of CD information".

Even stranger : the 109 does have a regular RCA coaxial PCM digital output !

Luxman D-109, image 1 Luxman D-109, image 2 Luxman D-109, image 3
Luxman D-109 specifications
Title Value
System : 16bit Linear
Frequency response : 5Hz...20Khz (+0,3 / -0,7dB)
THD : 0,003% (1Khz @ 2V output ; 30Khz LPF weighted)
S/N ratio : 100dB (4Hz...20Khz ; IHF-A ; emphasis ON)
{> 96dB (30Khz LPF weighted} ?
Channel separation : 88dB (1Khz) {91dB} ?
Dynamic range : > 96dB {100dB ?} (30Khz LPF weighted)
Direct Digital Serial Output : 1V p-p / 75 Ohm (backplate, behind the drive/trafo section)
Subcode output : DIN-like plug (backplate, center)
Analogue output : 2V
PC : 25W
Dimensions : 43,8 x 10,2 x 38,7cm
Weight : 12,5kg. {11kg} ?
IR remote control : RD-109
List price : 160,000¥ (1986)
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page online since : december 2009
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