Author |
808 Toms |
br>whomper |
br>Have just finished building a three toms build and have run into two issues:
1. Mid and High tom's tune does not behave right. From pos 0-9 it is tuned below audible range, between 9-10 pos is the full sound range. Same goes for both boards. Have checked cap values, all in order. Which component should I check for range issues?
2. Noise board does not issue pink noise, barely white noise. Have used BC550 instead of 559 and rest are as designed.
Any hints? br> br> |
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br>Zsolti |
br>Have you just simply replaced the BC559 with BC550? One of them is a PNP, the other one is an NPN transistor. br> br> |
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br>whomper |
br>Doubled checked tranies and have 1 BC559 and the rest are BC550 inplace of the 549. The strange thing is that the low tom works and for all I can tell, apart from the different caps and 2 resistors, all components are the same to the mid and high boards.... br> br> |
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br>whomper |
br>Problem solved...
Have used 500K pots instead of 500 ohm... br> br> |
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br>jzurd0 |
br>Hi all,
It seems that Erez is not the only one with the noise source problem.
I have the same issue. No noise at all, only hum.
Just wondering if anyone could give us a hand on this... br> br> |
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br>jzurd0 |
br>Ok, I was using a +-15V power supply.
With +-12V it works flawlessly.
br> br> |
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br>antf4rm |
br> whomper wrote: | Problem solved...
Have used 500K pots instead of 500 ohm... |
That is exactly what i did as well! shit!
I put in some 10k pots just out of intuition and i have a better range but its still not right. Now i know why.
Where did you find 500 ohm pots?
I cant believe i overlooked that "K" br> br> |
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