Need something to mix digital audio signals together or digital and analog mix with SPDIF out

The only device I know of that clearly mixes multiple SPDIF signals and analog signals into a single analog and SPDIF output is the Roland M-1000. Roland - M-1000 | Digital Line Mixer

Unfortunately this device is discontinued and I can’t find it on eBay or anywhere online in the used market.

I need at least one analog and one SPDIF input that’ll run through some sort of mixing process, and output into a single SPDIF connection. Does anyone know of any device that can do this?

I found something that might but I can’t find any clear information, which is the Behringer FCA610 Firepower. I don’t want to have to use a computer with it though either, if it can be helped.

I’d like to be able just hook my home theater system up to this.

Primary use is so I can use my MS-DOS gaming rig. The AWE32/AWE64 soundcards output midi/fmsynth via SPDIF at all times. However they will not output voices/digital game sounds. (The AWE64 will for certain high quality wave files.) Though my intentions is to use only the AWE32 sound blaster cards for the fact I can have the real Yamaha OPL support for my DOS games.

So I want midi/fmsynth to come out via SPDIF, then mix the analog out for digital sounds only. (Soundblaster’s mixer software can disable midi output on the analog outputs, so that way there’s no music coming from two sources.)

Which I would then be able to also mix my Roland MT-32, Roland SoundCanvas SC-88, or even my Yamaha MU-80 into the mix if so desired.

So in short, my primary need is one analog in and one SPDIF in at least, and final mix output over SPDIF. Worst case? I suppose a high quality DAC (that doesn’t cost an arm and a leg) and a high quality mixer aren’t completely out of the question.

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Could you post a drawing of the components you want to hook up?

Sure. Something like so. The "or" options is mostly due to the potential hookup plans I have.

To keep in mind, SPDIF = Midi and FM Synth based music/effects and Analog = Voicing/Digital sound here.

I keep the XRGB-Mini in my system for all the older game consoles, such as the GameCube, PS2, SNES, and Sega Genesis via RGBs (or component in the case of the GameCube and PS2.). So I may end up getting a SPDIF switch hub for both optical and coaxial needs, so I can utilize this and the PS2 more easily.

Couldn´t you use something like an SPDIF to Cinch as Cinch is more common than SPDIF.

I'm afraid I'm not familiar with that term, upon looking it up, I take it is the same as RCA style connectors? https://en.wikipedia.org/wiki/RCA_connector

Which is what the SPDIF uses here on the AWE64 Gold example. Just digital signal rather than analog. I plan to end up with SPDIF TOSLINK as the end result.

Though off my AWE32 card I plan to use, I may end up with either TOSLINK or Coaxial, with some minor modifications needed for the latter choice.

Messed up some terms there. What I meant was something like this.

Ah okay. Well, unfortunately that won't work. SPDIF I want is basically sent in digital zeros and ones. Pretty well computer data. You won't be able to combine that with an analog or another digital signal without a device that'll handle the processing. Such as the Roland M-1000 for example. ;)

Well some good news, I've managed to obtain the Roland M-1000!

Things are working quite well with the MS-DOS machine I have with the SoundBlaster AWE32 CT3980 card. Basically I've used a Gigabyte S/PDIF bracket and connected the S/PDIF wires to the AWE32's S/PDIF header, and then connected the 5+ VCC connector on the bracket to the PSU of the system. This is needed for using TOSLINK off the bracket. The AWE32 cards have the necessary 5 volt TTL signal needed to drive TOSLINK. AWE64 cards on the other hand, only are 0.5 volts which meed the specification coaxial uses.


So all I needed was an optical cable to go from that bracket to the M-1000. Then I got a 3.5mm stereo to separate left and right 1/4" TS cable to plug the analog audio out of the AWE32, to the analog in of the M-1000.

Then I go to the mixer settings of both MS-DOS and Windows 95, and basically mute midi output. The mixer chip on the AWE cards do not touch the S/PDIF signal whatsoever. Since S/PDIF out is midi/OPL3 output only, we need the analog out to provide voice / cd-audio. Though some games have their own mixers (Example, Wacky Wheels) and the music needs to be turned all the way down to prevent it's output to the analog jack.

I really enjoy having my DOS game music clean, and directly fed into the main system with out worries of the DAC quality of the AWE32. I wish I can find a way to mod my Roland MT-32, Roland SC-88, and Yamaha MU-80 external midi devices to output S/PDIF and run them through this thing as well! Maybe some day.

I finally found what I needed, and I'm quite pleased with it. =)

Sounds good!