ALPINE DAC 3900 (Rare and Hi-end External DAC from ALPINE,made by LUXMAN)
This is for the legendary alpine 3900 dac/preamp, using quad 18bit burr browns. It has 3 optical inputs and 2 analog inputs, copper chassis, and looks beautiful.
Author(s):
Takashi Tokuyama - Alpine Electronics Inc.
Tadashi Sano - Alpine Electronics Inc.
Abstract:
Six years ago Alpine made the proposition that ultrasonic components were important to audio reproduction. The implementation of our proposal was the DA-07, a unique D to A converter employing a new interpolation program. Since then we have continued to study the impact of ultrasonics. We introduced a D to A converter unit for car audio (model 3900), which employed this technology. But, it did not penetrate widely because of its size and cost. Success required integration. The new one-chip Fluency DAC (FEDAC) incorporated D/A conversion and DSP to fully implement the "Fluency" interpolation method without loss of audio performance. This paper describes the theory of Fluency interpolation, the history of integration, and the performance evaluation of the one-chip Fluency DAC.
This is for the legendary alpine 3900 dac/preamp, using quad 18bit burr browns. It has 3 optical inputs and 2 analog inputs, copper chassis
The 3900 is a high end D/A convertor which has seperate PCB's for both the analogue/digital section. Its also supposed to extend the frequency range past 20kHz and give a 'natural' sound. The D/A was intended for Class A amplifiers and has outputs for 'Front', 'Rear' & 'Non-fading'. It also has a Fixed level output RCA which we will cover later. The D/A can handle 32k, 44.1k (CD), & 48k (DAT) inputs
The 3900 can only accept a 'fixed' RCA input, so you need one of these decks for the analogue section to work correctly. If you stick a bog standard deck on without this feature it will not work - trust me I've tried it
The 3900 has 3 digital inputs which range from 'changer', 'master', & 'aux'. The 5959/5959s changers were the intended targets for the 3900 as they had digital outputs or 5959 using 4323 interconnector from digital coaxial to optical digital outputs.
The 3900 also utilitises an M-BUS connection which goes from the headunit straight into the D/A itself. This is so you can use the volume controller on the headunit to control the overall volume. The D/A also has an M-BUS out which then connects to the changer as normal to power it etc. The wiring diagram is on
www.alpine1.com if you need any further clarification on this.
From then on you use the Front, Rear & Non-fading outputs RCA's which go to the amplifiers.
Saying all of that, you can still use the 3900 with todays headunits which utilise an optical out on the deck - with a few niggles might I add.
Lets say for example you have a 7998R - you can wire it directly from the optical out straight into the 'changer' digital input - be aware that you will have to use the 'fixed output RCA' on the D/A.
Retailed for $1400USD
Uses Burr Brown DAC ICs
Freq: 5-20000 Hz (-2,5 dB, 20 kHz)
THD: 0,008%
SN Ratio: 103 dBA
Poze reale, relatii la telefon 0751488830
pretul meu 100 euro!
ALPINE DAC 3900
