DizRotus Posted February 19, 2005 Share Posted February 19, 2005 I'm thinking of building a SETH amp. I know the SETH design is simple and not audio perfection, but I want the experience of building a relatively simple tube amp that might later be reworked. Before I invest the time, I would be interested in any feedback (pun intended) regarding the SETH amp. If anyone has experience with similar DIY projects, Id welcome that knowledge. Quote Link to comment Share on other sites More sharing options...
NOSValves Posted February 19, 2005 Share Posted February 19, 2005 For information on the SETH I would stroll over here http://www.audioasylum.com/forums/magnequest/bbs.html Bottlehead kits are ultra simple and less expensive to build but very limited in the power output. The SETH should be a very nice amplifier not needing any upgrades if you use the designers recipe. Craig Quote Link to comment Share on other sites More sharing options...
3dzapper Posted February 19, 2005 Share Posted February 19, 2005 One of these days I want to build a Seth myself. Dr Jeff's designs have a great reputation. If you would like to build a 300B SET amp, there is the JELabs design at Angela Instruments.. I like this circuit better myself: http://forums.klipsch.com/idealbb/files/300bse6sn7.gif I have changed the PS caps a bit to stiffen the bass. These are not kits, and not for the timid but do sound very nice when properly done. Welborne Labs DRDs are kits with better iron than Bottleheads but cost more. It's all good!! Rick Quote Link to comment Share on other sites More sharing options...
Painful Reality Posted February 19, 2005 Share Posted February 19, 2005 To my knowledge, there is only one other guy that have finished building his Seth. You can reach him through the MQ forum probably. His moniker is Mrclassicman. As for upgradabilty of this desing, I think there are two interesting avenues down the road. First is to implement an adjustable bias scheme for the tubes (there where plenty of discussion about this on the MQ forum). Second would be to design another driver stage with a lower impedance than what I initially designed. Other design I like (for a beginner in mind) can be found here: http://www.pantheon-audio.com/pantheon_links.htm Quote Link to comment Share on other sites More sharing options...
mike stehr Posted February 19, 2005 Share Posted February 19, 2005 "Other than SETH, what DIY amp projects are out there?" Hell, the whole internet's saturated with them..... Quote Link to comment Share on other sites More sharing options...
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