Bass Balls Building, the saga! need help

[Gabriel Simoes]

Hello all,

Here I am, again, asking for help building an EH bassballs clone.

The twin filters work great ! I used pots instead of trimpots and I can get very very good configs from it, but the problem is that I can't use the sensitivity pot of the fuzz mod because the signal is somehow hiding when should be amplificated.

http://www.y3m.net/images/bassballs/bbschem.gif



This is the schematic ... I'm using two RC4559 from texas ... in the "1458" opamp, the signal goes to the leg number 6 and should get amplificated and out at leg number 7... but I get no sound from it! I've tried to replace it and nothing happened , replaced again and nothing, replaced for an TLC 2262 and nothing ... and then I decied to see if it was a cold joint, and no, it's not, everything redone and the same problem ... then I made cable for listening to the singla from the opamp legs so I would have no doubt, and yes, the signal reaches the leg number 6, and NO, the sound does not flow from leg number 7.

And yes , the voltage is almost 9... like 8.90
The other half of the opamp works like a dream!

What else could I do but changing the opamp (did it 3 times) or redoing the joints (did it once)

Thanks for your attention, help and patience.
Gabriel

[Gabriel Simoes]

Hohoho .... its working !!!

I decied to change not only 1 ic to TLC2262, but both, and then , tchanan! working !!! and great!

I did the tropopicione and got the same problem but never thought it was the ci ...
There they say it's a critical component, that some problems could occur if the ics where changed but ... I couldn't imagine this would happen! and the stuff does not work with a TLC2262 and a RC4559 (using the rc for the q filters ....)...
Anyway thanks for the ones who took a look at this thread!

See ya

Gabriel

[Zero the hero]

Nice to see that you get it working!
Sorry if I haven't had any chance to give you my support for the project I posted on my site:I hope that you enjoy the bassball anyway!

[Gabriel Simoes]

Thanks for your attention anyway ..

I see that the problem I had with the tropopiccione project was the opamp .... the same problem! .... so people should advise that you can gowith the rc4559 instead of 1458...

and I´d like to know if changing the 1n4148 for a ge diode like 1n60 wouldgive a better "fuzz"  sound .... and how could I give more ... hummm power to hat effect ... like more sensitivity ....

Thanks
Gabriel