Nope ;-) I was practicing with lifting my F5T ;-) so part of my victory is from this forum 🙂 so, please, make it simple for me for now: tell me one thing, is it so much better than F6? Do I need to make one, or start Buzzing you with pcb's ;-)
You are welcome to come down with your F5T V3 and do a little listening. You will know what to do then😀
Itis maxing out my speaker selection. Alpair 7.3 has wonderful detail, space and imaging, but no body down low. 10.2 have great body, but loose the detail and clarity you get with 7.3's. A two-way using both would be ideal, for this type. Altecs would be mind blowing.
Itis maxing out my speaker selection. Alpair 7.3 has wonderful detail, space and imaging, but no body down low. 10.2 have great body, but loose the detail and clarity you get with 7.3's. A two-way using both would be ideal, for this type. Altecs would be mind blowing.
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do not worry for me ; I repaired everything , from VOX15 to bigbadass Fender 200W bass combo
sole thing I never saw is small Champ
sole thing I never saw is small Champ
Damn you guys.... how do you expect us to finish anything when we see all those wonderful leds...
To put things in perspective, are we talking about a dodojFet build or an IRF build?
To put things in perspective, are we talking about a dodojFet build or an IRF build?
you can make it with IRFP too , even if they're used in sim strictly because I was lazy to include SJEP models instead
it was proof of concept , where part used for output wasn't so important
in fact , I think someone already tried F6 with IRFP , or at least Pa confirmed that option
it was proof of concept , where part used for output wasn't so important
in fact , I think someone already tried F6 with IRFP , or at least Pa confirmed that option
On the next board, I will give multiple outputs a try to see if how they perform. Biggest advantage of SS is the fact that you can get away without degeneration. Laterals will be first to tr on the next version, as they also allow this feature. Something about minimal degeneration that really frees and amp up. Kicker is getting distortion low and dampening reasonable. There are some Cree Sic devices that Iwill try as well. That being siad, Nelson made some wonderful sounding amps with the IRF fets. TIs the topology that is interesting in the end. I have started work on ZM's version with 5 fillar winding that is being negotiated as we speak.
Been listening to HiRes Concord Music Chamber - Brubeck, Gandolfi, Foss
This amp is ridiculous. Period.
This amp is ridiculous. Period.
What is your source for balanced vs single ended?
Buzz,
I was wondering if some of the magic may be in the difference between your single ended source and your balanced source?
What are you using for each?
Rush
Buzz,
I was wondering if some of the magic may be in the difference between your single ended source and your balanced source?
What are you using for each?
Rush
Same for both. 🙂
Here is the theory. AN amp with no feedbaclk, except for local meeting place of floating ground. You tune the circuit to nice warm 2k in SE, as posted in graphs, then you make magic connection, reducing 2k somewhat, but also maintaing some. It brings the spectra into nice balance and as a result, you have cleaned things up a bit and added a little DF. I loose some of the vertical height of the music which I often associate with SE tubes(also now higher negative 2k harmonics). I can assure you, it is the F6 on roids. I can wait to put a quality FE on it. With music, the better the recording, the better the sound. I am hoping the same is true of FE'nds and sources. It is an exciting thing to think you have some that will only improve as you add to. Today, I will compare to F5T V3 with no diodes, as I never get near thta power threshold.
Couple of options
Here is the theory. AN amp with no feedbaclk, except for local meeting place of floating ground. You tune the circuit to nice warm 2k in SE, as posted in graphs, then you make magic connection, reducing 2k somewhat, but also maintaing some. It brings the spectra into nice balance and as a result, you have cleaned things up a bit and added a little DF. I loose some of the vertical height of the music which I often associate with SE tubes(also now higher negative 2k harmonics). I can assure you, it is the F6 on roids. I can wait to put a quality FE on it. With music, the better the recording, the better the sound. I am hoping the same is true of FE'nds and sources. It is an exciting thing to think you have some that will only improve as you add to. Today, I will compare to F5T V3 with no diodes, as I never get near thta power threshold.
Couple of options
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Currently, a set of SS outputs for this amp would run you close to $400. I would pay it without hesitation and it would be at the top of my list if starting new system. I am interested to see if the 5 fillar winding version from ZM will best it. Unfortunately the delivary time is mid June, so no new excitement for a while.
Have you thought about building with the 2SK82?
You can still get them for around $25 each.
Rush
exactly , except..... expression same as "little pregnant"
that territory - you need either Pass SIT-1 , or V-Fet , or Shaded SJEP/SJDP , or Shaded IRFP , with maybe just small amount of feedback , needed for slightly better cone control
however - when one needs higher power , some amount of feedback is welcome .... no feedback is good in 10W territory
SE iteration enclosed - sort of universal project/pcb ; still need to be confirmed in vivo , but I have no doubts
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Any reason why we can't schade output? You can definitely tell that a non feedback amp that somehow maintains some linearity has to be a special thing. Just a certain freedom to the musak.
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you can Shade output but ..... few things :
- same as for Ultralinear connection of toobz , it's important to note that every part is having own sweet spot ; say that for IRFP240 1K for gate resistor and 10K from drain to gate is proven combo ; for every other part one need to find proper combination
-to have Shade and place a part in most linear part of load lines , think about at least 50% higher PSU voltages
- same as for Ultralinear connection of toobz , it's important to note that every part is having own sweet spot ; say that for IRFP240 1K for gate resistor and 10K from drain to gate is proven combo ; for every other part one need to find proper combination
-to have Shade and place a part in most linear part of load lines , think about at least 50% higher PSU voltages
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