The MPX-1 has in input level switch to choose between Unbalanced (8 dBu
to -14 dBu) and Balanced (+20dBu to -2dBu). I am using the inputs
unbalanced at the higher sensitivity, patched from my mixer effects
sends. I suppose I could switch to the lower sensitivity, but the MOTM
outputs are unbalanced. Shouldn't matter if the ring lug gets grounded
by a patch cord, right? The outputs are +18 dBu at max scale. I'll
just have to try it. The only thing I did with the MIDI on the MPX-1
was hook it to my keyboard MIDI out. But I did not try using it as a
controller for the MOTM-650. I'll try that too. Thanks for the ideas.
-Richard
Mark wrote:
> While I don't own an MPX-1 myself, as far as I can remember, it has
> both input and output level knobs, and -10/+4 switches in the back.
> So I don't think you would need any any sort of I/O module. Also,
> considering that the MPX-1 can send most of its internal mod sources
> as MIDI data, you could use it with a MIDI-->CV converter to create
> LFO's, envelope followers, etc.
>
> Anyway, it wouldn't be too difficult to build a 1U triple preamp.
> Just put an attenuator before an op-amp, then you would have
> adjustable gain from "negative infinity" to whatever you gain set the amp
> (eg. 15-20 dB). You could build it on a MUUB, MOTM breadboard, etc.
> You could even use an Oakley multimix panel if you didn't mind the
> knobs being labeled wrong.
>
> On 9/19/07, Richard Brewster put forth:
>
>> Great! Thanks. I get stuck in a rut or two myself.
>>
>> About this suggestion by Robert: I use a Lexicon MPX-1 to add effects
>> through my external mixer send and return. Great idea to take the MPX-1
>> output and feed it back into the MOTM. But it is at line level. I
>> don't have an external input module yet. This looks like another DIY
>> project. Blacet has an input module with envelope follower, but I want
>> a stereo unit. Ideas?
>>
>
>