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MIDI Thru box

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First post, by dreamblaster

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Hi guys,
i needed a MIDI Thru box for my 'MIDI module tower', and made one for myself
See photos.

If it makes sense, i will consider making a larger batch.

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Reply 2 of 11, by matze79

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Nice MIDI Splitter 😀

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Reply 6 of 11, by dreamblaster

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Oh well, ok i will build a few more then 😉

Visit http://www.serdashop.com for retro sound cards, video converters, ...
OPL3LPT, X2, S2, S2P, MCE2VGA, ... many projects !
New X2GS sound card : https://www.serdashop.com/X2GS
Thanks for your support !

Reply 7 of 11, by CrossBow777

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I would buy one, but I want one that allows me to select with output is actually receiving the data. I also prefer to not have any cabling on the front of the unit. In my case I have 3 separate modules I like to switch between when playing games. But currently I'm using the midi thru on two of them to do this. So it requires all three modules to be powered on if I want to listen to just #3 at the end of the chain. It would be nice if some essentially made a cheap replacement of the old Roland MPU-105 midi selector.

g883j7-2.png
Midi Modules: MT-32 (OLD), MT-200, MT-90, SD-20

Reply 8 of 11, by keropi

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Well a midi switch won't help you much with what you describe... if games send some data to modules or setup in a certain way and you switch modules then the new module will miss that data and you will get wrong playback. What you need IMHO is a sound mixer where you can select which module to hear - they would all be powered on and received all needed data so no playback issues.

🎵 PCMIDI mpu
🎧 Orpheus soundcard
Action Rewind
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💻 WTB Amstrad PC7486SLC-33

Reply 9 of 11, by RetroGamer4Ever

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I'd love to see a DreamBlaster external USB audio box, with MIDI I/O and an internal Waveblaster header for the X2GS (or whatever) board. With PCI slots being gone from new boards, the only alternative for MIDI is external boxes and consolidation always makes things easier.

Reply 10 of 11, by CrossBow777

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keropi wrote on 2021-11-22, 17:51:

Well a midi switch won't help you much with what you describe... if games send some data to modules or setup in a certain way and you switch modules then the new module will miss that data and you will get wrong playback. What you need IMHO is a sound mixer where you can select which module to hear - they would all be powered on and received all needed data so no playback issues.

What you have state does happen even now and I usually have to power off the module I want to use to correct for odd issues like this. With something like the old MPU-105, you can select which module is actually receiving the signal. I don't normally swap modules in the middle of playing a game. I do currently use a physical speaker selector box to control which of the modules is actually able to be heard. The volume of each of my modules is adjusted individually to essentially be at the same level so a mixer isn't needed in this case.

I do get what you are saying in that even with this device, all the signals go to everything plugged in, and so the devices I don't want to use I just leave powered off and that would work too. But again, I don't like cables coming out the front of the device and would prefer if all the cabling was just on the backside of the device.

g883j7-2.png
Midi Modules: MT-32 (OLD), MT-200, MT-90, SD-20

Reply 11 of 11, by keropi

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Ah ok I get it, I kinda thought you did it at random times to hear differences on the fly... Sure what you say works fine

🎵 PCMIDI mpu
🎧 Orpheus soundcard
Action Rewind
MegaCard
💻 WTB Amstrad PC7486SLC-33