Shponglefan wrote on Today, 12:08:

You're mixing up MIDI and audio signals. […]
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DustyShinigami wrote on Today, 10:58:

How would this work exactly? Do I need to get and plug in two MIDI cables from the MT-32 and SC-55 OUTPUT into the mixer's INPUT 1 and 2...? And then... what do I connect to the OUTPUT of the mixer...? 😖

You're mixing up MIDI and audio signals.

MIDI is not sound. It is a digital data signal.

The computer sends digital data via the MIDI cable to the sound module(s). The sound module(s) convert that MIDI data into music/sound and then output sound via audio cables to the audio mixer. The audio mixer then sends the sound to your speakers.

Therefore you need to connect the MIDI cables from your computer to the sound module(s). Then you connect the audio cables from the sound modules to the audio mixer. Then your speakers to the audio mixer.

Ah. Okay. ^^;

Yeah, it sounds simple in theory. Still struggling to get my head around it in practise. And also because I only have one red and one white RCA cable connected to the line-in of the sound card, which is for the SC-55. And I don't know what I'll need, or how to connect them, to the 6.35mm adapter jacks I've plugged into the MT-32. Or if I'm connecting these RCA cables to the mixer, how...? I'm so damn confused.

The cheapest option is to get a few of these so you can plug in normal 3.5mm jacks to the mixer
https://www.amazon.co.uk/XINXINGDINGSHENG-Hea … d/dp/B0FXFWZV4K

The mixer you bought has 6.35mm stereo jacks. So you need adapters or cables that go from the hardware you want to connect to it, to the 6.35mm stereo jacks on the mixer.

SC-55 - two RCA jacks (L/R) to a single 6.35mm stereo jack
MT-32 - two mono 6.35mm jacks (L/R) to a single 6.35mm stereo jack
PC sound card(s) - 3.5mm stereo jack to 6.35mm stereo jack
Speakers - (I'm assuming) 3.5mm stereo jack to 6.35mm stereo jack

This can all be done either with adapters or my preference is pre-made cables that have the respective connectors on each end.

You use the respective cables/adapters to connect the audio outputs from your PC sound cards, MT-32 and SC-55 to the mixer. Then connect the output from the mixer to your speakers.

Then you should be good to go.

NeoG_ wrote on Today, 13:25:

The cheapest option is to get a few of these so you can plug in normal 3.5mm jacks to the mixer
https://www.amazon.co.uk/XINXINGDINGSHENG-Hea … d/dp/B0FXFWZV4K

Perfect. Thanks for the link. And the diagram. I wasn't sure if the stereo ones existed because when I did a search, all that came up were splitters. One male and two female.

Shponglefan wrote on Today, 13:31:

The mixer you bought has 6.35mm stereo jacks. So you need adapters or cables that go from the hardware you want to connect to i […]
Show full quote

The mixer you bought has 6.35mm stereo jacks. So you need adapters or cables that go from the hardware you want to connect to it, to the 6.35mm stereo jacks on the mixer.

SC-55 - two RCA jacks (L/R) to a single 6.35mm stereo jack
MT-32 - two mono 6.35mm jacks (L/R) to a single 6.35mm stereo jack
PC sound card(s) - 3.5mm stereo jack to 6.35mm stereo jack
Speakers - (I'm assuming) 3.5mm stereo jack to 6.35mm stereo jack

This can all be done either with adapters or my preference is pre-made cables that have the respective connectors on each end.

You use the respective cables/adapters to connect the audio outputs from your PC sound cards, MT-32 and SC-55 to the mixer. Then connect the output from the mixer to your speakers.

Then you should be good to go.

Brilliant. Thanks for the explanation. 😀 Okay, that makes things a lot more clearer. I've ordered some stereo 6.35mm adapters; they should arrive tomorrow. Whew.

Good luck! Hope you're able to get everything connected and working right.

Thanks. 😀 I'll post an update once everything's set up. Or if I run into any issues.