My vibro champ project

winston_smith
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« on: March 24, 2008, 01:07:35 PM »

Hi everyone,

This is my short story. I have just finished a vibro champ clone that I built according to Nik's layout. I sourced all the parts by myself (and I'm forever in doubt to Nik, who was so kind to put his fabulous layouts on him website). The amp sounds great. In addition to Nik's layout, I added a standby switch and another filtering stage (22uF with 100ohm resistor) to further reduce the hum. What I would really like to see is a voltage chart from the people who also built this little amp. It would be nice to have all these data so we can compare our results and troubleshoot our amps.

W.S.


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Fluddman
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Re: My vibro champ project

« Reply #1 on: June 13, 2008, 05:03:54 AM »

Well done Winston,

I just went with a kit from Nik. I was interested in hearing that you added another filtering stage - any chance you could share that with me? (That is where you added the additional cap and resistor)

I have some AC hum that I assume your mod would fix. I know a few others that have a similar problem.

Thanks


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winston_smith
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Re: My vibro champ project

« Reply #2 on: June 24, 2008, 08:26:12 AM »

Hi,

I'm sorry for the delay I write back, I didn't check this thread in a long time. The mod is very simple. I added a filter stage before all the others. In other words, the DC from the rectifier tube goes to 22uf cap, then through the 100 ohm 5watt cement resistor and then to the rest of the circuit, like in the layout. It's very easy. Please let me know if you have any questions.

WS


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