Reversing the Disney Sound Source

Discussion about old sound cards, MIDI devices and sound related accessories.

Re: Reversing the Disney Sound Source

Postby matze79 » 2017-12-10 @ 08:22

This is anoying the Device runs alone very well, no problems...

As you can see:
http://www.vartaleaks.com/chipdac-metal.mp4

i use a simple Amp:
https://english.electronica-pt.com/db/i ... DA7050.jpg
Added 100nf and 10uf as deblocking.

Unfortunaly i did not paint a Schematic for now.
Only soldered on protoboard.

http://www.epanorama.net/circuits/dacs.html

its combined with this Schematic:
http://www.epanorama.net/circuits/cent_dac.gif

Circuit is driven from 9V Lab Power Supply or 9V Batterie (For mobile usage)
VIA 7805 with 2x 100nf and 2x 10uf Deblocking on in and output.

As you can hear above, its working glad and has no issues on every computer i tried (at least 4)
Only one older Laptop is not working, LPT has not much driving Power and with 74HC244 added it works.
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Re: Reversing the Disney Sound Source

Postby Paralel » 2017-12-10 @ 22:52

matze79 wrote:
2017-12-09 (1).png


:/ from Amp Output, also happens without Amp (only when DSS is not active)

Very nice. So. Definitely 50 Hz, highly structured, and also sub structured.
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Re: Reversing the Disney Sound Source

Postby matze79 » 2017-12-12 @ 06:30

Update:
The DAC does not like having Inputs float.
Adding a Bus Driver solved one of the problems for me.
At least my perfboard build is working now.

The DSS has still some noise on it :/
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Re: Reversing the Disney Sound Source

Postby matze79 » 2017-12-19 @ 12:18

I have 5 DSS Boards left, if anyone is intressed just write me a PM.
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Re: Reversing the Disney Sound Source

Postby dr.zeissler » 2017-12-19 @ 12:20

please tell me the "simplest" way for the getting voltage? Thx Doc
CPU: PII 133-333 MOBO: SNI-D981 RAM: 512- FDD: Dualfloppy 3,5"HD/5,25"HD - 3,5"HD - 5,25"DD ISA-Catweasel HDD: 2x40GB - DVD
ISA(3): Audician32-S2Dreamblaster - GusACE PCI(3): Monster3D- Intel NW AGP(1): Matrox G200 8MB
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Re: Reversing the Disney Sound Source

Postby matze79 » 2017-12-19 @ 12:29

Just pass 5V to the 2 Pin Header, maybe from Computer Powersupply Molex connector ?

3,5" Floppy Connector maybe ^^
Attachments
stuf.jpg
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Re: Reversing the Disney Sound Source

Postby dr.zeissler » 2017-12-19 @ 12:31

USB-Solution possible? I want to use this machine: https://images-na.ssl-images-amazon.com ... N5PqzL.jpg

Thx!
CPU: PII 133-333 MOBO: SNI-D981 RAM: 512- FDD: Dualfloppy 3,5"HD/5,25"HD - 3,5"HD - 5,25"DD ISA-Catweasel HDD: 2x40GB - DVD
ISA(3): Audician32-S2Dreamblaster - GusACE PCI(3): Monster3D- Intel NW AGP(1): Matrox G200 8MB
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Re: Reversing the Disney Sound Source

Postby matze79 » 2017-12-19 @ 12:36

You can also use USB, do you have some old USB Cable ?
just strip it and connect Redwire near the Diode and Blackwire next to R1 on the Jumperheader.
Last edited by matze79 on 2017-12-21 @ 07:25, edited 1 time in total.
matze79
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Re: Reversing the Disney Sound Source

Postby dr.zeissler » 2017-12-19 @ 16:29

I should have some USB-Cables :)
CPU: PII 133-333 MOBO: SNI-D981 RAM: 512- FDD: Dualfloppy 3,5"HD/5,25"HD - 3,5"HD - 5,25"DD ISA-Catweasel HDD: 2x40GB - DVD
ISA(3): Audician32-S2Dreamblaster - GusACE PCI(3): Monster3D- Intel NW AGP(1): Matrox G200 8MB
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