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1  British Style / JTM 45, 50 / Re: Help please on mixed wiring confusion.. on: October 30, 2013, 07:40:07 AM
Thanks Wyatt, I appreciate the help.. I am learning from scratch and I started this journey whilst I had someone that knows about amps, unfortunately he moved back to the States so I am trying to learn from reading everything I can get my hand on.. I struggle sometimes with these schematics e.g. wires don't match the colours on the tone stack but appear to on the output transformer..
Thanks again for you help
Kev
2  British Style / JTM 45, 50 / Help please on mixed wiring confusion.. on: October 24, 2013, 10:00:19 AM
Help please. I am a little confused on two points with the Bluesbreaker I am building from Ceriatone.. (images attached)
I have attached the 2 images to highlight the confusion.
1. There are 2 versions of the Bluesbreaker schematics getting around on the site, one on the actual site you buy the amp from, the other from this forum.., you will see in the image that I have pasted both sections in and that the tremolo plug seems to have two different versions of the wiring,, the 2010 version shows a wire going across both point an wire going diagonally to the back left pin, yet the 2006 version doesn't have this?
It might make no difference but I would appreciate your feedback
2. I am confused about the choke wires..either one of the wires go to the 32 +32 cap direct and the other goes to the 16 ohm pin on the impedance selector or this attached image implies that the choke solders to the pins on the bread board the go off to the switch and cap.. .. I suspect it is the first statement but your help appreciated..
also what is the OT CT on the 32 + 32 cap.. I assume OT is output transformer but CT?

sorry one more thing, given the colour of the wires rarely match the diagram the output transformer wiring? are the wires accurate on the diagram

I would love a photo of the inside of one of the ceriatone Bluesbreakers if someone has one.. any help appreciated
regards
Kev
3  Website, Store / Support / Overdrive Special has very low volume on: September 19, 2013, 05:51:09 AM
Hi, built with support from a friend a Over Special (Ceriatone), all went well for a few weeks then it sounded a but crackly (like a guitar plug being pulled out of the jack on a guitar while the amps on) and then sound was virtually non existent.
I pulled it apart. tried the old chop stick trick and found one wire that crackle slight on the first preamp valve but nothing major, I also notice it was the only set of valve pins I could tap and here through the speaker box, each preamp after that was dead quite if I tap the resistors etc
Any help appreciated
Kev

Update:
I found that switching the Ax7s around i could get it to be a bit louder, that led me to believe it was these.
Swapped them out for some old ones I had and volume is back to normal
My question would be..
Given the amp is but a few weeks old, whats more likely.. The Ax7 was faulty from the start, band new JJs or that there is something that is causing it.. (maybe time will tell)
Off to buy some more Ax7s

your feedback would be appreciated..
regards
kev
 
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