From Peter Grenader Sent Tue, Nov 1st 2005, 17:58
From Peter Grenader Sent Tue, Nov 1st 2005, 17:58
This may or not not work. A lot of mixers use what's called decoupling caps which are there to kill stray voltage on the line and return the input's 'resting state' to ground. They are there to correct voltage offsets Problem is, the cap doesn't know the difference between stray DC and DC you're feeding through as a control signal. AC waveforms - no problem. DC (either a constant voltage level, or one that doesn't pass through zero or does so at a very slow rate) - this may not work. It won't blow anything up if you try it, the decoupler will just do it's job and stop these signals from passing into the internal summer. Not all mixers are fitted with these caps. Blacet's mixer/processor is one. Doepfer's 'EXP' A-138 is another. My model 18 won't have them, either. But in all cases of mixing signals from different synths, grounding and voltage range is an issue. Both systems will need to have the have ground reference or the VC coming form the outside world won't do jack to the other instruments. Also you must kep an eye for overdriving. A serge and Modcan is expecting a 6 volts signal. A Buchla, Wiard, Blacet can put out 10 or above. It's usually not a problem, but I have seen cases in certain Modcan modules where a zener in a CV input blows if fed a 10 volt signal. - P hope this helps, - P xxxxxx@xxx.xxx wrote: >> another thought was can I mix CV signals outside the synth > with a 'normal' mixer? > > **Uhh, you may want to be very careful with scenario. If you try this, take > your channel trims WAAAAAY down before you go feeding a raw voltage into a > conventional mixer intended for audio. There may be potential audio level > (and grounding?) issues. This is actually how people used to derive 'click > tracks' from sequencer boxes - take the trigger output into a mixer channel, > record the sixteenth note 'thud' and then feed that into a trigger input on > something else.** > > Pat