Mutant Clap - noise osc leak into main output

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ilya.n
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Mutant Clap - noise osc leak into main output

Post by ilya.n » Wed Jun 24, 2015 8:09 am

Hi,

In my Mutant Clap there is a small leak of noise osc into main output, heard as a hiss (changing with pitch change) when outputting at higher levels.

Anyone has the same issue? Is it a feature or a bug of my module?

Thanks!

toneburst
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Post by toneburst » Thu Jun 25, 2015 5:26 am

It's normal, apparently, and there's no way to get rid of it.
Apparently it's worse in the DIY version (which I have) than in the pre-assembled module.

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ilya.n
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Post by ilya.n » Thu Jun 25, 2015 9:09 am

Pretty sad.

I ll try to re-calibrate.
Otherwise i ll put it through a vca to curb the noise...

toneburst
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Post by toneburst » Sat Jun 27, 2015 3:17 am

You can minimise the noise by careful calibration, but you won't get rid of it completely.

This was the best I was able to manage with my Mutant Clap DIY build:

https://soundcloud.com/toneburst/mutant-clap-test

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ilya.n
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Post by ilya.n » Mon Jun 29, 2015 11:46 pm

As I understand pre-built modules do not have this problem.
Can it be cheap hardware causing the problems?
Pots, trimmers etc.?

toneburst
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Post by toneburst » Tue Jun 30, 2015 4:13 pm

I corresponded with the designer about this, and it seems to be more to do with the 3-tiered PCB layout than with individual components. The industrially assembled version uses a single board, and surface-mount components which are much closer together, which makes it less susceptible to noise-leakage issues, apparently. I'm not sure why this is the case...

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ilya.n
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Post by ilya.n » Thu Jul 09, 2015 12:01 am

Is it possible to get the schematic? It looks like VCA that controls the body of the clap sound is leaking...

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Doc L Junior
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Mutant Clap DIY

Post by Doc L Junior » Thu Dec 07, 2017 10:03 am

Hi,

I had a perfectly working Mutant Clap until today. Now I have constant noise from all three outputs and it does not react to any trig signal - no blinking trig led.
I have no idea what could have caused this - nothing special has been patched into it ad I haven't had any power issues.
I would really appreciate if someone could guide me in troubleshooting this one.

So far I have checked the trig in jack but it seems fine. I have also examined all solder joints and gave some of them a reflow.
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dancelwerk
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Post by dancelwerk » Tue May 28, 2019 3:31 am

mmmmm

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