Clocking a Eurorack Case with Hapax

Hey Hapaxians!

My Hapax (v3.00) is the master clock of my dawless setup. Mainly MIDI Hardware Synths, MIDI Controllers, and a MIDI Hub (MRCC).

I’d like to add my Eurorack case to the setup. I can plug gate and cvs from the Hapax ‘s four CV/Gate outputs directly to VCOs, VCAs etc. but I what I’d like to achieve is to send a clock to my Eurorack system, that I can dispatch wherever I need it (e.g., FX modules that take a clock in for synced delays, modulation modules like the Maestro etc.).,

Sounds like a n00b question (also I did some research in the forum before) but, how do you send a clock signal from the Hapax to the Eurorack world (without going through a computer plugin)?

The manual is comprehensive when it comes to the other way around (syncing Hapax from Eurorack), not so much in my use case.

  • Do you take one Hapax MIDI DIN or TRS output and plug it into a MIDI module that can then convert to a CV clock? (I do have a FH-2 + MIDI Break Out Expander)
  • Or do you use a CV/Gate track and directly send from there (I tried this, sending one note per beat on a pattern through a CV output, directly into an FX module Clock In, it works, the tempo is detected, but it uses one track and one CV output just for that, feels like a big waste)

My concern is to avoid wasting a connection just for that and I regret there is no dedicated CV Clock Out, but I can live with that.

My guess is you’ll go the MIDI OUT way, but I’m curious to hear what are your own strategies here.

Thanks!

The first option is what I went with. I configured my Mutant Brain to expose the MIDI clock with different time divisions on fixed gates (so e.g. CV12 will always be /24, CV11 /4, etc.) so I can patch directly without having to do any further time division. You can probably do something similar with the FH-2. If you don’t want to sacrifice in-rack CV outs for this, you could also do the same with an external MIDI-CV interface (like the Kenton Pro Solo), but you will have more flexibility in-rack.

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Nice trick regarding splitting clock divisions over dedicated gate ouputs! Since I also have an 8-Gate expander with the FH-2, I have more than enough outputs to stay in-rack. This way I don’t need to use Pam’s Pro to do that work and keep its channels for other useful tasks :slight_smile:

I’ll check the FH-2 manual about this.

Thanks for sharing!

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I think using the FH-2 plus gate expander is a great idea. But I thought it should be mentioned that Hapax can output Clock, Start and Reset without needing to sacrifice a track. The options are to be found under Settings→Sync Output (Gate Run/Trig Reset/Gate Clock).

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Indeed, just checked the manual, I missed that part, meaning I don’t need to use any track to ouput a fake clock with a note per beat. The gate output are configurable to send a clock and even a clock division. Great and good to know in case I want to clock my case directly via CV and not MIDI.

That said, I will first try to clock it via MIDI, because this way I can play notes and use poly/MPE Hapax track(s) to sequence the case, with polyphonic tracks thanks to FH-2 configurations.

Hapax MIDI OUT A/B/C/D → Expert Sleepers MIDI Breakout Expander MIDI IN → FH-2 Configurations → Output gate/CV/AT/CC74 (for MPE) per voice.

Looks great! Now I need to test all this for real :slight_smile:

Thanks a lot!