Archive of the former Yahoo!Groups mailing list: MOTM

previous by date index next by date
previous in topic topic list next in topic

Subject: Re: [motm] MOTM-650 4-ch MIDI-CV converter

From: "Paul Schreiber" <synth1@...>
Date: 2002-10-15

> 1) 16-bit DACs if you please.

Required, and there is most of the cost (dedicated DAC-per-output, no muxing).

> 2) Gate LEDs and a Midi Clock LED would be very very helpful (as proven by
> the Oakley MidiDAC2 and Expressionist breakout panel).

Gate LEDs are 'free', that's the 4 decimal points in the LED display :)

> 3) Add Trig out per voice for Attack-Decay enveloped drum sounds and
> envelope retriggering.

Possible map of Velocity to be Vel/Trig? Adds $1 of hardware. It would probably be "global" for
all 4, then you could move Velocity to an AUX (individually).

> 4) Dedicated Arp Clock in and Midi Clock out jacks.

No room in the inn.

> 5) Aftertouch, Pitchbend, Mod Wheel, Pedal, Breath Control assignable to
> AUXs.

Just SW. But the Velocity/AUX DACs are either 8 or 10-bits. I would think Pitchbend does just
that, it bends the main CV out.

> 6) Midi In, Out and Thru accessible on a header would be great.

In is already on the front, Out is already on a jack at the rear. Will look at Thru.

> 7) Selectable polyphony level (1-Unison). You might also want to support an
> interesting Unison mode (similar to the Jupiter I think?) where if one note
> is held, all 4 voices are assigned to that note; if a second note is played,
> two voices are assigned to each note; if three, then two-one-one: and
> finally if four, each has one voice.

Just SW.


> 8) When polyphony set to 1, allow each voice to be assigned a different MIDI
> chan, like four separate midi-to-cv units.

See above.

> 9) A 440Hz reference out might be a nice addition.

Wacky.

> 10) Hmm.. did I mention gate LEDs??

No.

>
> Suggestion:
> How about a much less congested 3U or 4U layout? You could add Trig per
> voice as well as separate Arp Clock in and Midi Clock out and have plenty of
> room for those useful LEDs.

Because I want to keep it under $239.

>
> Questions:
> 1) Could you describe the Arpeggiator functionality?
> 2) Could you describe the note priority/assignment modes?

Later when the SW spec is nailed down.

> 3) What power supply will be required?

The new MOTM-950 with the +5V output.

Paul S.