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In Reply to: RE: Warning, rant ahead. posted by Tre' on February 12, 2014 at 17:05:25
About a biscuit away from being done with these "Soloist 88s", Push-Pull KT-88 mono blocks from Diyaudio.com. Mullard 5-20 designed by Tubemack, breathed on by Johan Potgeieter, Eli Duttman, Steve Brown, et. al. Professor Brown is showing me, by e-mail, how to build the schematic.
I currently alternate between a direct-coupled 45 SE (Schmalle/Tucker) and a triode wired, KT-88 SE (George Anderson). The purity of tone of the 45 is undeniable but the larger muscles of the KT-88 are seductive too. Listening to Steve Brown's Allen Wright inspired Push-pull a few years ago convinced me that a push-pull belongs on my shelf.
Going from 1.8 to 6 to 50 Watts is an eye-opener!
Follow Ups:
...I love the sound of a 45 ,,,, but I'm seduced by the sound of an 845..
JMHO..
Have fun
Willie
I'm with Willie and Tre in principle. Unless speakers demand high damping factors or simply need to be played at a SET-precluding volume. I'd opt for a higher power SET amp in preference to PP.
Interestingly, over the years I have read comments suggesting that despite their high-ish efficiency and over-damped bass response, the 4Pi speakers used by Bill seem to benefit from more oomph than one would usually expect.
Cheers.
“As long as we have any intention to be right… we should be wary. So long as words have the slightest ego attachment, they are dishonest.” Charlotte Joko Beck
....you hold the test leads to check the 1200 Volt B+
running about 700v plates and pulling 80ma..
Like a 45 on steroids..!
Have fun !
Willie
.
“As long as we have any intention to be right… we should be wary. So long as words have the slightest ego attachment, they are dishonest.” Charlotte Joko Beck
I understand the rant but....everyone who really loves the sound of reproduced music has their own idea and taste of what sounds good to them.
Not everyone can afford an SET that can drive the average speaker...or can they always afford a speaker that works well with SET amps that might have a more palatable price....with that said, there is definitely a range where we would all agree...maybe this discussion should happen on the DIY venue.
At this very moment, I'm listening to an EL84 triode strapped RC coupled power amp driven by a 5687 parafeed preamp with LL1674 opt all DIY driving DIY back loaded horns using Tangband drivers that cost 30 bucks apiece.
My IT coupled 50 mono blocks are down stairs and I'm happy to sit a listen to the EL84 rig..upstairs...
Hat's off to anyone willing to put the time into a design and build what makes them happy...
amioutaline? put your stuff on the DIY forum...
Stuben
You mean the one with Clocks, Crystas and Telephone Calls? That one?
maybe i'm missing the humor, or I just don't get the reference.
It is my understanding that the SET forum is for commercial SET amps, not diy discussion primarily. There is a TubeDIY forum for diy amp builders. Yes, it has been polluted by capacitor and low-DCR power supply babbling but I think most people can sort thru that stuff. I'd rather just browse thru one diy forum on AA then have to sort thru the SET and DIY areas, personally.
Nice looking amps there!
With two 97db speakers and 1 watt going into each you have 100db in the room. I doubt you are using any more than that.
Any differences you hear between the 1.8, 6, or 60 watt amps is the difference between those amps in the first watt or damping, etc.
Did I mention my first post was a rant? :-)
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
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