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#21 |
diyAudio Member
Join Date: May 2005
Location: Lisbon Portugal
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I have a few questions about the v2 version:
what sort of power output could we expect into 6ohm speakers? What would be an appropriate transformer rating for such output? If mounting the 4 output devices and the 2 "double" diodes in one heatsink, what w/c value should one look for? |
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#22 |
diyAudio Member
Join Date: Jan 2007
Location: Tornesch
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Oh, the article is out! Thank you very much!
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#23 |
diyAudio Moderator
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So let me ask a question about configurations --
I am trying to use higher voltage transformers, but am not concerned about ultimate power output. My transformers are 49v-0-49v Can the v3 version be used as drawn with only 2 or 3 output pairs? The heatsinking required with the 4 pairs seems to be huge.
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Illustrated Build Guides - Pass F4 - Pass B1 - Pass F5 - Pearl 2 - O2 HPA - Hagerman Bugle 2 - Pass Aleph J - Me at BA '13 -Pass F5Turbo - BA-3 Amp - BA-3 Preamp - F6 AmpCampAmp |
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#24 |
AudioMaker.Tech
diyAudio Member
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Another classic. Fun, fun, fun. Thanks.
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#25 |
diyAudio Member
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F5c boards ordered
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#26 |
diyAudio Member
Join Date: May 2002
Location: oz
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Many Thanks Papa!!!
Is this , Particularly the V1 version, the beast with which i can drive my 0.1 ohm Ribbons speakers direct - ie no transformer? I see in the article the pictures of a 0.1 ohm being driven with high current... many thanks
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george a |
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#27 |
Sin Bin
Join Date: May 2008
Location: Front Row Center
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.1
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#28 |
diyAudio Member
Join Date: Mar 2004
Location: Bangalore
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Thanks Papa for the Turbo. It's been a long time since I read an article with such concentration and passion. Didn't want to miss a word.
Well next few months, if not years are going to be busy with these builds. Need to figure out a source for Fairchilds. Cheers.
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DIY F5T, F6, Aleph J, M2 & 45/2A3 DHT SET Amp, Fostex 206 based BLH, Altec 515 LF & 288 HF Onkens, Tannoy HPD Speakers. EMT950, Technics SP10, Garrard 401, TD124 turntables. |
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#29 |
Sin Bin
Join Date: May 2008
Location: Front Row Center
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Turbo F5 V3 for heeeeevaaar !!!!!!!!!
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#30 |
diyAudio Member
Join Date: Apr 2003
Location: MA
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Very interesting reading. Thanks for such an elaborate and thorough manual.
I noticed a couple of changes to the F5 circuit. R17 & R18 are now 100 ohm. And the gate resistors are 100 ohm. I have boards which I built last year. I guess it's not cricital to change those resistors? I don't want to risk my nicely assembled boards. Thanks again |
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