Drum machine internal sequencing vs MPC3000

Hi everyone,

I did a previous thread but I wasn't clear enough. I’m running an all-hardware rig with an Akai MPC3000 as my central sequencer. I sequence all of my analog synths (Juno-60(midified), DX, Korg etc) and my vintage drum machines (Roland TR-707, TR-626, Boss R-8) in parallel. For the synths I send Note-On/Off from MPC tracks, on separate tracks and midi OUT of the MPC. For the drums, I run them thru MIDI OUT B (midi thru box with all the drums)

I’m experimenting with two modes:

-Sequencing drums as notes from the MPC

-Using each drum machine’s internal sequencer in Slave-Clock mode but sending MIDI Clock from the MPC.

My challenge

When I use the drum machines’ internal sequencers , I can start them by hitting “Play” on the MPC (they sync to the clock), but I have no way to stop just one drum machine while keeping the MPC running another sequence. Or make the mpc to send empty patterns while I do not want them to play in one sequence.

Track On/Off on the MPC does not stop the internal sequencer.

Program Change does not change patterns on these machines (they ignore PC for pattern select).

What I’ve tried including the above

Gating the clock with an ERM Multiclock (cutting the DIN-Sync line), but this requires a dedicated hardware button.

Using MIDI Machine Control (MTC) for global Stop, but that affects all devices.

What I’m looking for
A way to mute the internal sequencer of an individual vintage drum machine (TR-707, TR-626, R-8) via MIDI or via MPC3000 controls, without stopping the MPC transport or affecting the other machines.

Has anyone solved this problem? Are there obscure SysEx commands, external MIDI patch-bays, or creative workflows you’ve used live to mute one drum box on the fly?

How was it done in the past?

Any tips, gear recommendations, or MPC programming tricks greatly appreciated!

Thanks in advance