Can the CP-251 handle a +14v signal?

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DinosaurSR
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Can the CP-251 handle a +14v signal?

Post by DinosaurSR » Wed Oct 11, 2006 9:34 am

I'm using a TR-606 alongside the Mooger CP-251 processor. The 606 has two +14v trigger outputs - can the CP handle those without freaking out or getting fried? I know that it only goes up to +5 CV signals, but what if I run it into the attenuator first and then into something else?

OysterRock
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Post by OysterRock » Wed Oct 11, 2006 4:32 pm

Wouldn't do it. 14>>5

You could build a simple two resistor voltage divider so scale down the voltage, though.

CTRLSHFT
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Re: Can the CP-251 handle a +14v signal?

Post by CTRLSHFT » Wed Oct 11, 2006 5:26 pm

DinosaurSR wrote:I'm using a TR-606 alongside the Mooger CP-251 processor. The 606 has two +14v trigger outputs - can the CP handle those without freaking out or getting fried? I know that it only goes up to +5 CV signals, but what if I run it into the attenuator first and then into something else?
yeah that's fine, but it's current limited down to +5. what are you trying to do specifically?
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Impossible Sound
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Post by Impossible Sound » Wed Oct 11, 2006 6:28 pm

I use the CP to attenuate signals in the +10v range from my modular synth all the time. If you're just using the multiple to distribute the gate, that shouldn't be an issue, either.

OysterRock
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Post by OysterRock » Wed Oct 11, 2006 8:22 pm

In my experience, it is always a good idea to heed voltage ratings. While it may work for awhile, you might not know what sort of stress you are applying to the circuit. Keep in mind current is directly proportional to voltage. So while it may "work", you could be dooming your unit to an early death.

The CP's attenuator will probably be fine to scale the voltage, since it is most likely a voltage divider anyway. Just make sure you attenuate the signal sufficiently, as 14V is almost 3x larger than its rated maximum input.

Impossible Sound
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Post by Impossible Sound » Thu Oct 12, 2006 11:28 am

What are the voltage ratings? I don't remember seeing mention of this in the manual. Where did you find this?

OysterRock
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Post by OysterRock » Thu Oct 12, 2006 5:20 pm

I was just going by what the original poster said, I don't have a CP. Looking through the manual just now, your right, its not explicitly stated. It does, however, say that the maximum mixer gain is unity and the maximum output voltage is +/- 5V. The level of input voltage that will damage it, I don't know. But whatever voltage level you put into it, you're not getting more than 5V max out.

Impossible Sound
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Post by Impossible Sound » Fri Oct 13, 2006 2:01 pm

With the mixer offset at +5v, you can get outputs from the CP-251 up to +7.5v with the LFO and as much as +10v with an expression pedal. Even higher is possible with external signals.

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