Icarium Posted November 14, 2007 Report Share Posted November 14, 2007 Looking forward to someday having one of these built. Quote Link to comment Share on other sites More sharing options...
Nanoha Posted November 15, 2007 Report Share Posted November 15, 2007 Don't know, but I would be interested myself. And what happened to bamaslama boards? Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted November 15, 2007 Report Share Posted November 15, 2007 I'm waiting for linear systems to get their butt in gear and actually deliver on lsk109's. Then the floodgates open. The lsk389 is so much better than either the 2sk389 or the individual versions used in the B52 that it is worth waiting to do it right. I have a dynafet prototype with 2sk389/2sj109 and it is kickass. No matching of parts will be necessary, just stuff the board and it works. Quote Link to comment Share on other sites More sharing options...
Edwood Posted November 15, 2007 Report Share Posted November 15, 2007 Will I be able to fry an egg on the heatsinks? Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted November 15, 2007 Report Share Posted November 15, 2007 Will I be able to fry an egg on the heatsinks? Nope. If you want to do that, find a raptor with the original power supply. Cooks eggs just fine. Quote Link to comment Share on other sites More sharing options...
Augsburger Posted November 15, 2007 Report Share Posted November 15, 2007 Nope. If you want to do that, find a raptor with the original power supply. Cooks eggs just fine. It is also great for refinishing furniture, it removes varnish and paint with ease. No need to visit Home Depot anymore. Quote Link to comment Share on other sites More sharing options...
DigiPete Posted November 15, 2007 Report Share Posted November 15, 2007 Kevin, Will the DynaFet work properly at a gain or 4 or 5 for 60ohm headphones, with just two output devices per channel vs. the 4 per channel, shown on the latest pcbs over on headwize? I know your original sketch showed two output devices per channel. Pete Quote Link to comment Share on other sites More sharing options...
Icarium Posted November 15, 2007 Author Report Share Posted November 15, 2007 Excellent KG, most excellent. Quote Link to comment Share on other sites More sharing options...
purk Posted November 15, 2007 Report Share Posted November 15, 2007 Is this the upgrade version of Dynamight? Quote Link to comment Share on other sites More sharing options...
PFKMan23 Posted November 15, 2007 Report Share Posted November 15, 2007 Isn't this a new project unrelated to the Dynahi/might? Quote Link to comment Share on other sites More sharing options...
Edwood Posted November 15, 2007 Report Share Posted November 15, 2007 Nope. If you want to do that, find a raptor with the original power supply. Cooks eggs just fine. Sweet, there should be more convergence headphone products. George Foreman Headphone Amp Grill! Quote Link to comment Share on other sites More sharing options...
aerius Posted November 15, 2007 Report Share Posted November 15, 2007 Isn't this a new project unrelated to the Dynahi/might? It's exactly the same, but completely different. Quote Link to comment Share on other sites More sharing options...
fierce_freak Posted November 15, 2007 Report Share Posted November 15, 2007 I've been tinkering with tubes more lately, but I'll definitely build a dynafet when they're ready to go. Quote Link to comment Share on other sites More sharing options...
Icarium Posted November 15, 2007 Author Report Share Posted November 15, 2007 It's exactly the same, but completely different. It's actually a close cousin to the Dynasaur Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted November 15, 2007 Report Share Posted November 15, 2007 Kevin, Will the DynaFet work properly at a gain or 4 or 5 for 60ohm headphones, with just two output devices per channel vs. the 4 per channel, shown on the latest pcbs over on headwize? Yes it will, without any additional compensation, i have one running at a gain of 4 now. You can certainly build it with 2 devices per channel. But i like the sound of the renasys fets over the international rectifier versions, and they are not as strong, so you really should do 4 of them. There are 4 different versions of the boards, and when i'm sure of the pinout of the lsj109 there will be 4 new versions. Build what ever turns your crank. Then again compaired to the toy output transistors on the (well you know) you could probably just build it with one set of output transistors. But where is the fun in that. Need to be able to drive k1000's to painfully loud levels. Quote Link to comment Share on other sites More sharing options...
DigiPete Posted November 16, 2007 Report Share Posted November 16, 2007 Yes it will, without any additional compensation, i have one running at a gain of 4 now. You can certainly build it with 2 devices per channel. But i like the sound of the renasys fets over the international rectifier versions, and they are not as strong, so you really should do 4 of them. There are 4 different versions of the boards, and when i'm sure of the pinout of the lsj109 there will be 4 new versions. Build what ever turns your crank. Then again compaired to the toy output transistors on the (well you know) you could probably just build it with one set of output transistors. But where is the fun in that. Need to be able to drive k1000's to painfully loud levels. Kevin, I will never run K1000s, so I am looking to reduce the energy footprint of a blanced version, without a penalty in sonic quality. Which fets are the renasys? the "well you know"?? Cheers Pete Quote Link to comment Share on other sites More sharing options...
amb Posted November 17, 2007 Report Share Posted November 17, 2007 Renesas is the (not so) new owner of what was once the semiconductor arm of Hitachi. The Renesas parts Kevin refers to are the 2SK213/2SJ76 - 2SK216/2SJ79. Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted November 17, 2007 Report Share Posted November 17, 2007 the "well you know" are those toy 400mw transistors one particular famous manufacturer and good friend of mine use... Quote Link to comment Share on other sites More sharing options...
Nanoha Posted November 17, 2007 Report Share Posted November 17, 2007 Renesas is the (not so) new owner of what was once the semiconductor arm of Hitachi. The Renesas parts Kevin refers to are the 2SK213/2SJ76 - 2SK216/2SJ79. amb, you should post more!! Quote Link to comment Share on other sites More sharing options...
amb Posted November 17, 2007 Report Share Posted November 17, 2007 amb, you should post more!! I would love to, but have trouble keeping up with too many forums. Aside from headwize which remains my mainstay, head-fi and here, I also peruse several other forums periodically. Quote Link to comment Share on other sites More sharing options...
Nanoha Posted November 17, 2007 Report Share Posted November 17, 2007 I would love to, but have trouble keeping up with too many forums. Aside from headwize which remains my mainstay, head-fi and here, I also peruse several other forums periodically. Makes sense. Quote Link to comment Share on other sites More sharing options...
deepak Posted December 16, 2008 Report Share Posted December 16, 2008 Kevin any updates? And is the finalized name of the amp DynaGBF? Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted December 17, 2008 Report Share Posted December 17, 2008 still waiting for linear systems (or anyone else) to get off their asses and start selling dual matched complimentary front end fets. After that, lots of new stuff. Of course the world really does change in the middle of february. Quote Link to comment Share on other sites More sharing options...
Dreadhead Posted December 17, 2008 Report Share Posted December 17, 2008 still waiting for linear systems (or anyone else) to get off their asses and start selling dual matched complimentary front end fets. After that, lots of new stuff. Of course the world really does change in the middle of february. Middle of February? Quote Link to comment Share on other sites More sharing options...
cclragnarok Posted December 17, 2008 Report Share Posted December 17, 2008 Middle of February? My birthday? Or the end of analog TV? Quote Link to comment Share on other sites More sharing options...
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