wwwdotcomdotnet Posted October 11, 2007 Author Report Share Posted October 11, 2007 xanthus and otzelpeitz, i will get you that info later today Quote Link to comment Share on other sites More sharing options...
wwwdotcomdotnet Posted October 11, 2007 Author Report Share Posted October 11, 2007 Xanthus, I bought the parts from a lot of different vendors. Check into Mouser.com, mojomusicalsupply.com, hoffmanamps.com, angela.com, metroamps.com, and a few others that i cant remember. otzelpeitz, i cant remember exactly which transformers we used, but i can get that info once i am back in my room with the amp Quote Link to comment Share on other sites More sharing options...
Xanthus Posted October 11, 2007 Report Share Posted October 11, 2007 Thanks for the awesome sites Quote Link to comment Share on other sites More sharing options...
Thoughtless 7 Posted October 11, 2007 Report Share Posted October 11, 2007 Awesome project man. I'm just starting my Gilmour Jr kit as a starter project...then i want to make a 4watt. This has really inspired me to get on with it! Quote Link to comment Share on other sites More sharing options...
Maiden69 Posted October 11, 2007 Report Share Posted October 11, 2007 Hurry and post what transformers you used, because I'm really thinking about making these one or a different tube amp! And I'm clue less about the subject! But I'm pretty good at electronics! I did a search about the brand you used, but there are a lot to choose from and the site I checked got no price list... Quote Link to comment Share on other sites More sharing options...
wwwdotcomdotnet Posted October 11, 2007 Author Report Share Posted October 11, 2007 (edited) for everyone who wanted to know about the transformers: the output tranny is a Hammond 1650F and the power tranny is a Hammond 272FX. both of these you can order through angela.com for a really fair price compared to other transformers out there. we figured out the issues with the amps. Our negative feedback loops were wiring incorrectly, and we need to change a resistor value in order to bias the tubes correctly. that should be done over the weekend!! Edited October 11, 2007 by wwwdotcomdotnet Quote Link to comment Share on other sites More sharing options...
Digideus Posted October 11, 2007 Report Share Posted October 11, 2007 Ive looked into this before. In the UK, Maplins sell electronics Kits to build 200W mosfet power amps, which I was considering trying. None of the electronics look *THAT* difficult. I wasnt aware there was a web site/forum dedicated to it. Thanks for the info, Ill have to look into this more! Quote Link to comment Share on other sites More sharing options...
Otzelpeitz Posted October 11, 2007 Report Share Posted October 11, 2007 thanks for posting the transformers. Are you sure about the output transformer? Hammond says its 25 W but the 2204 is 50W. Quote Link to comment Share on other sites More sharing options...
wwwdotcomdotnet Posted October 12, 2007 Author Report Share Posted October 12, 2007 thanks for posting the transformers. Are you sure about the output transformer? Hammond says its 25 W but the 2204 is 50W. hmmm i will have to check into that Quote Link to comment Share on other sites More sharing options...
bancika Posted October 12, 2007 Report Share Posted October 12, 2007 Currently i am working on a 3W Class A cool, I love low power amps, I built 3 so far, all below 6W. The one I'm preparing to build will be push-pull class AB 4-5W with EL91 tubes Quote Link to comment Share on other sites More sharing options...
wwwdotcomdotnet Posted October 15, 2007 Author Report Share Posted October 15, 2007 the amp works! and by works i mean sounds like a jcm 800! so here were the issues i was talking about after some troubleshooting: -one of my three diodes was backwards -a few places were not grounded properly because i forgot to attach a string of grounds in my last step -one misplaced wire i was playing it for about an hour today with the chassis wide open on the operating table and with the gain cranked there was minimal noise, so once it is enclosed it will be great. once i put it back into the chassis and into the cab i was having some shorting out issues with wire ends and shielded cables touching, so i tried to solve that by wrapping key areas with electrical tape. im still having a problem with it, but thats no big deal. i'll get it solved later this week when i finish the cab completely. i'll do my best to get some sound clips within a week or so, i just have too much on my plate right now to get it done this moment. Quote Link to comment Share on other sites More sharing options...
Thoughtless 7 Posted October 28, 2007 Report Share Posted October 28, 2007 Do you have any pictures of the Cab and JCM all finished? Quote Link to comment Share on other sites More sharing options...
wwwdotcomdotnet Posted October 29, 2007 Author Report Share Posted October 29, 2007 not yet...the amp plays but its not completely finished (the cab, that is). ive been really busy with school lately so the amp got shoved to the side for a few weeks. i promise when its completely done ill post more pictures, but that might now be for a while Quote Link to comment Share on other sites More sharing options...
mattharris75 Posted October 29, 2007 Report Share Posted October 29, 2007 Have you gotten a chance to start working on your 2 guitar builds? I'm looking forward to seeing some progress on those! Quote Link to comment Share on other sites More sharing options...
wwwdotcomdotnet Posted October 29, 2007 Author Report Share Posted October 29, 2007 I have been working on them a little bit. The purpleheart/padauk one is done, it just needs to be sanded with 220 and 320 grit and its ready to laquer. I just need to get around to buying some laquer... but i should be spraying it next week sometime. As for the semihollow...i glued the bec and finished shaping hte beck. all i really need to do is route the pickup cavities, do the body and headstock binding, and sand sand sand. Quote Link to comment Share on other sites More sharing options...
Jalien21 Posted February 15, 2008 Report Share Posted February 15, 2008 thanks for posting the transformers. Are you sure about the output transformer? Hammond says its 25 W but the 2204 is 50W. hmmm i will have to check into that hammond transformers can handle way more power than they're rated for. 1650F is the right transformer for the job. Quote Link to comment Share on other sites More sharing options...
Bygde Posted February 16, 2008 Report Share Posted February 16, 2008 very true, i'm actually getting my fiance addicted too! You should make a tutorial about that, so people like me can understand how that's done Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.