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Old 2nd November 2012, 12:37 PM   #111
Tea-Bag is offline Tea-Bag  United States
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F6D, I don't get it.
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Old 2nd November 2012, 12:41 PM   #112
Vix is offline Vix  Yugoslavia
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F6Dumb :P
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Old 2nd November 2012, 01:11 PM   #113
generg is offline generg  Germany
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Seems that everyone is humming about F6; I don't see much exitement about Nelson's Open Baffles, except myself...
Perhaps because I am happy with my feedbackless F3, so I don't feel the urge to build another amp. But, seeing those speakers makes my fingers itch...
@Vix
one half of my heatsinks is filled with an F3 clone, the other half with slide 13 F6...... besides the original F3 standing aside...
So you left off the feedback with F3, what was your impression, on open baffles?

Yes F3 is very charming, F6 has to fight....
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Old 2nd November 2012, 02:47 PM   #114
Vix is offline Vix  Yugoslavia
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Hi Generg,

F3 without feedback (and with some passive correction circuit as described in Nelson Pass article about transconductance amps) makes Visaton B200 on open baffle sounds much better than it does with feedback, not to mention any other SS amp. It sounds good enough that I stopped bothering about any other amps...
Eminence Beta 15 on the bottom is fed by the ordinary, class AB Sony SS amp. The OB itself still has room for improvement, and I liked the bass solution as seen at BAF...

Last edited by Vix; 2nd November 2012 at 02:50 PM.
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Old 2nd November 2012, 02:51 PM   #115
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Seems that everyone is humming about F6; I don't see much exitement about Nelson's Open Baffles, except myself...

Me too !!!!!!!!!! (bass load)
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Old 2nd November 2012, 04:43 PM   #116
jakubg is offline jakubg  Slovakia
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Oh my God , F6D ??
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Fcore
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F6D, I don't get it.
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F6Dumb :P
nicoch58 means the combination of Bruno's Ncore class D and Nelson's F-series
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Old 2nd November 2012, 06:09 PM   #117
Zen Mod is offline Zen Mod  Serbia
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Old 2nd November 2012, 06:25 PM   #118
dewardh is offline dewardh  United States
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I don't see much exitement about Nelson's Open Baffles, except myself...
What Thumper's father said . . .

Not everyone loves whizzer cones.
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Old 2nd November 2012, 11:00 PM   #119
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but no whizzer = no size , no size = not go deep , no deep =Hi xo ,Hi xo= no 15", no 15" = No boom boom
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Old 5th November 2012, 05:08 PM   #120
lhquam is offline lhquam  United States
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Does anyone have a photo of the F6 THD-vs-Frequency slide that Nelson showed at BAF? I have no idea what that looks like when tuned to the Master's ear.
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