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Messages - kin0

#46
Amplifier Discussion / Re: debugging a small amp
May 27, 2011, 01:53:18 PM
I don't think that there is a problem with the circuit. This is a barber LTD clone and it uses the exact schematic that is given in Barber site.
#47
Amplifier Discussion / Re: debugging a small amp
May 27, 2011, 08:13:21 AM
Clean I mean directly to the power amp and by drive channel i mean when i put the stompbox circuit i posted before the power amp
#48
Amplifier Discussion / Re: debugging a small amp
May 21, 2011, 12:56:54 PM
I tried to take out the pot the the switch. The clean works (straight to preamp) but the drive channel (through the pedal) don't work-just makes lots of noise.
#49
Amplifier Discussion / Re: debugging a small amp
May 18, 2011, 08:58:18 AM
KK
#50
Amplifier Discussion / Re: debugging a small amp
May 16, 2011, 08:30:54 AM
okay now I got the power amp working. A power wire got loose. I also put in the IC. the clean (staright to the power amp) works but the dist channel still just makes noise. Also I put a pot before the power amp (as it's said here in page 8:http://www.vellemanusa.com/downloads/0/illustrated/illustrated_assembly_manual_k4001.pdf -except I put it between a dpdt so it would work only with the clean) but it does nothing the volume stays the same.
Oh and there are some buzz then the volume is up. In my guitar amp there is no buzz at the same volume.
#51
Amplifier Discussion / Re: debugging a small amp
May 12, 2011, 12:04:23 AM
the problem it haven't worked even then I bypassed the overdrive. By the way I used a dpdt switch. 1 Pole is switching out put and 1 is switching the led (the inputs are joined together). Is this a good switching?
#52
Amplifier Discussion / Re: debugging a small amp
May 11, 2011, 01:04:09 PM
I made the pcb myself. Here it is:
I can't find form where I downloaded it.

http://www.siz.co.il/my/mvjyyahzftwm.bmp
oh and this is the power amp kit.
http://www.vellemanusa.com/us/enu/product/view/?id=350529

Oh, im so stupid. I forgot in insert the ic in the preamp. But it still don't explains why it haven't made any sound in the clean channel and why it made so much noise.
#53
Amplifier Discussion / debugging a small amp
May 11, 2011, 11:09:07 AM
Hay, today I finished building my first ss amp. It's a 8w chipamp kit for the power amp and the barber ltd (silver fox clone) for preamp. The power amp worked great and made sounds but after I added the preamp I can just hear white noise (then I turn on the drive channel i hear more gain but still no sound). What places to check and how to debug?
Here is the topic with my project planning (in the end I put a barber ltd instead of the shredmaster and used only 1 drive pedal instead of 2)

http://www.ssguitar.com/index.php?topic=1834.msg12006#msg12006
#54
Could you post the one without the 9v adaptor?
#55
Preamps and Effects / Re: Randall RG80/RG100 Preamp DIY
January 22, 2011, 01:21:57 PM
mensur can you tell how to use your schematic with the regular 24V? (What to erase and what to add?)
#56
OK I fixed it. The zener was the wrong way. Thanks anyway. Now I am working on the pcbs.
#57
It's why I  asked. I HAVE NO IDEA what is wrong.
#58
but won't it burn again?
#59
but the resistor have already been burned
#60
and what about the zener rgulator

I used 120 OHM 1\2 W and a 5W 9v zener. I haven't checked the voltage but there was smoke and the resistor turned black. I need about 50mA cause I use barber LTD as the clean preamp and the shredmaster as the dist.