Wiring for MC6 MK2 5 PIN MIDI OUT -to- 3.5mm TRS Midi In (?)

Morningstar Gear MC3/6/8 MIDI Controllers
1

Hi all !

Looking to connect my MC6 MK2 5 PIN Midi OUT to my Boss GT1000 Core 3.5mm TRS MIDI-IN Female Jack.

I only need Midi Out from MC6 to Midi In on the Boss … no need at all for Boss Midi Out to MC6 Midi In.

Just wondering if someone could post a quick pic / description of which wires go to which ends ?

I know I only need to use the 5 PIN Midi 5, 4 and 2 Pins

But I dont know where the 5, 4 and 2 Pins go (?) … to the Tip (?) Ring (?) or Sleeve (?) on the TRS 3.5mm Male plug (?)

Many thanks,
Ben

2

I just found this Pic on your website in a search:-

5 PIN MIDI to TRS WIRING
5 PIN MIDI to TRS WIRING1448×554 53.5 KB

It shows:-

=> Midi Plug PIN 2 to TRS Jack SLEEVE
=> Midi Plug PIN 4 to TRS Jack RING
=> Midi Plug PIN 5 to TRS Jack TIP

Will this Wiring Layout work (?)

Thanks,
Ben

3

I can confirm that this will work

4

Hey GuitarWolf !

Thanks for that.

I wired up the lead … checked the wiring with a Multimeter and its all wired Midi Plug PIN 2 to TRS Jack SLEEVE, Midi Plug PIN 4 to TRS Jack RING & Midi Plug PIN 5 to TRS Jack TIP … all good.

However … the Midi Triggering is very erratic and not always correct / inconsistent.

The 3.5mm TRS Jack I used was one from my local parts store which they sell for Headphone audio-mini-plugs.

I have no idea if it is a Type A or Type B or something else.

=> would the fact that it is an audio 3.5mm TRS plug be causing this erratic midi triggering (?)

=> how do I tell if I have or get a Type A 3.5mm TRS Jack (?)

Many thanks,
Ben

5

Hi, TRS is always the same. Type A and Type B refers to the connection of the pins and the TRS plug. The schematic you’ve posted is from the official Roland/Boss website and shows the connection of the boss bmidi adapter plug. This plug is a Type A 5 pin to TRS adapter. That’s the standard Boss has been using since they introduced TRS midi. My guess is that you’ve soldered your cables wrong. The pins shown in the schematic are from the point of view of the BACK of the 5 pin plug

6

Thanks. I’ll swap 5 and 4 on the TRS Jack and report back !

Thanks again,
Ben