Internally routing one sound card's output to another?

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

Internally routing one sound card's output to another?

Postby appiah4 » 2018-1-12 @ 08:34

I have several builds where I have one card for Win9x and one card for DOS, and usually the Win9x card's Line Out is externally routed to the DOS card's Line In. So essentially the DOS card is a noise generator passthrough. I do this with an external audio cable, which is messy. I was wondering if this can be done internally? Maybe I could route the DOS card's output to the Win9x's AUX or TAD headers somehow? Anyone have such a setup and how does it work?
A500:Rev6|512K+RTC|ACA500+|HxC/df1|C1084S
1994:PCI597-1|P133|32MB|Trio64|ES1868/S2
1997:S1573S|K6-2/400|64MB|M220|V2-SLI|CT4500/32M
2000:GA-BX2000|P3-700E|256MB|GF2GTS|MX300
DELL:GX110LP|PIII-1000|512MB|G450|128i/X3M
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Re: Internally routing one sound card's output to another?

Postby derSammler » 2018-1-12 @ 10:42

Many sound cards have headers on the PCB directly beside the audio jacks. They provide the same signals than the jacks, so you can use them as well. And the cool thing is that they get disabled as soon as you plug something into the jack.

What sound cards do you have exactly?
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Re: Internally routing one sound card's output to another?

Postby appiah4 » 2018-1-12 @ 12:18

derSammler wrote:Many sound cards have headers on the PCB directly beside the audio jacks. They provide the same signals than the jacks, so you can use them as well. And the cool thing is that they get disabled as soon as you plug something into the jack.

What sound cards do you have exactly?


What I have at hand are:

Creative Sound Blaster 16 CT2290 Creative CT1745A ISA
Creative Sound Blaster 16 CT2890 Creative CT2504-CQ ISA
Creative Sound Blaster 16 CT2920 Creative CT1745A ISA
Creative Sound Blaster 16 CT2940 Creative CT2502-SDQ ISA
Creative Sound Blaster 16 CT2980 Creative CT2502-SDQ ISA
Creative Sound Blaster AWE64 Value CT4500 Creative EMU8011-01 ISA
Creative Sound Blaster AWE64 Value CT4520 Creative EMU8011-01 ISA
Creative Sound Blaster AWE64 Value CT4520 Creative EMU8011-01 ISA
Creative Sound Blaster PCI 128 CT4750 Creative CT5880-DC0 PCI
Creative Vibra 128 CT4810 Creative CT2518-DBQ PCI
Creative Sound Blaster Live! Value CT4780 Creative EMU10K1-JFF PCI
Creative Sound Blaster Live! Player CT4830 Creative EMU10K1-NDF PCI
Creative Sound Blaster Live! 5.1 SB0100 Creative EMU10K1-JFF PCI
Creative Sound Blaster Audigy 2 ZS SB0350 Creative CA0102-ICT PCI
Creative X-Fi Xtreme Music SB0460 Creative CA0107-PAG PCI
Edison Gold 16 Rev3.2B ESS ES688FC ISA
Genius 0207000 V2.0 ESS ES1868F ISA
Best Union MF-1868 REV:3.1 ESS ES1868F ISA
Formosa MPB-000074 Ver:1.1 ESS ES1868F ISA
Best Union MF-1869 REV:2.1 ESS ES1898 ISA
(Noname) ESS Solo-1 ESS ES1946S PCI
S-Link SL-41A ESS Solo-1 ESS ES1938S PCI
Yamaha SM718 Rev:2.00 Yamaha YMF719B-S ISA
Zoltrix Audio Plus 6400 3D PnP (AV309) Crystal CS4232 ISA
Diamond MX300 Aureal AU8830A2 PCI
Terratec 512i Digital ForteMedia FM801-AU PCI

I would like to route one the PCI and/or ISA chips with FM synthesis through PCI cards that have wavetables in Win9x or vice versa. So say an SB16 through an SB Live!, an ESS Solo-1 through an Audigy 2 ZA, or the other way around.
A500:Rev6|512K+RTC|ACA500+|HxC/df1|C1084S
1994:PCI597-1|P133|32MB|Trio64|ES1868/S2
1997:S1573S|K6-2/400|64MB|M220|V2-SLI|CT4500/32M
2000:GA-BX2000|P3-700E|256MB|GF2GTS|MX300
DELL:GX110LP|PIII-1000|512MB|G450|128i/X3M
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Re: Internally routing one sound card's output to another?

Postby Kamerat » 2018-1-12 @ 16:17

I once routed the line out of a Terratec ESS Solo-1 to a CD in or AUX in header of a Turtle Beach Santa Cruz. The Solo-1 card had internal headers for all external sound connectors. Used a cable for CD audio and had to rearrange the wires of the connector going to the Solo-1 as it differed from the output of a CD-ROM drive.
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Re: Internally routing one sound card's output to another?

Postby RJDog » 2018-1-12 @ 22:19

I have a Yamaha 718S and it has the solder positions for a header behind each external audio jack... it would be easy enough to solder in a small header and use a CD audio cable to route its line out to another cards CD or AUX in.
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