Kippei 0 Report post Posted January 10, 2006 240v side. Where ya put your fuse... I use a fused plug take out the 13A and put in the 0.2A in. You tried 2227? how does it compare with 2134 Share this post Link to post Share on other sites
squalle 0 Report post Posted January 10, 2006 (edited) I did try 2227 instead of 2134 (or the equivalent 2132) like no difference. 2227 has slower slew rate, but the tube has even a slower slew rate. so yah, the change makes no difference 2227 and 2134 have the same max current output. I havent tried any op-amp with higher current capability yet as with my circuit they'll introduce higher dC offset (200mV if I put in 2227) so right now stick with 2132 in my slot first I'm thinking of something else now EDIT: my fuse is at the neutral side, just before the trafo ur way of doing is good. save the money buying that fuse holder haha Edited January 10, 2006 by squalle Share this post Link to post Share on other sites
Kippei 0 Report post Posted January 10, 2006 (edited) I still wondering, this tube sound compressed or it is me hearing the wrong thing.... My PPA with opa627 sound with more soundstage with MS-1. Just now i almost wanna fired up my browndogs, den i cannot find any opa134.. I always tot i got some leftover... Edited January 10, 2006 by Kippei Share this post Link to post Share on other sites
squalle 0 Report post Posted January 10, 2006 eh wait ur buzz problem OK already? btw, saw ur post in headfi hahaha oh then have u properly set the plate voltage to 40v or thereabouts? Share this post Link to post Share on other sites
Kippei 0 Report post Posted January 10, 2006 yep 40v ... measure from plate to gnd... Share this post Link to post Share on other sites
Kippei 0 Report post Posted January 10, 2006 After much digging in headwize.... http://headwize.com/ubb/showpost.php?fnum=...=47463&fpage=24 I think ours are the cheapo ones Share this post Link to post Share on other sites
squalle 0 Report post Posted January 10, 2006 the tube? yea lol I've asked for quotes from frankie of well audio JJ will cost 35 dollars the mullard will cost 50 dollars so pick ur poison Share this post Link to post Share on other sites
kross 0 Report post Posted January 10, 2006 hi squalle, what power supply u use? diy? i think the psu might be giving me the buzz. i tried using 2 x 9v batteries for a try and they don't give me any buzz or hum at all. Share this post Link to post Share on other sites
squalle 0 Report post Posted January 10, 2006 hmm... my 2 units of SOHA not giving buzz or hum at all I think you've misread it and no, we cant use batteries or DC output wallwart for SOHA errm, need AC to get the voltage doubler working Share this post Link to post Share on other sites
huangyong 0 Report post Posted January 11, 2006 hwy squalle, how's ur hybrid power amp project going on? Share this post Link to post Share on other sites
squalle 0 Report post Posted January 11, 2006 planning stage collecting info on parts availability and pricing Share this post Link to post Share on other sites
Kippei 0 Report post Posted January 11, 2006 hybrid power? wats that Share this post Link to post Share on other sites
squalle 0 Report post Posted January 11, 2006 just wait and see Share this post Link to post Share on other sites
Kippei 0 Report post Posted January 11, 2006 I got another idea for the dablok.. is to make it a seperate plug module, since almost every household item use a transformer. Whenever we need to use a specialised application. Just plug into that plug. But i got no idea how much current it can handle... Share this post Link to post Share on other sites
squalle 0 Report post Posted January 11, 2006 easy... how much are ur diodes rated for? that's the maximum continuous current handling Share this post Link to post Share on other sites
