dgb Posted December 29, 2004 Share Posted December 29, 2004 Nakamichi PA amps and TA/SR recievers used Thresholds STASIS technology. I have a TA-4A 100 watt amp and need not go past 2 on the dial for my Fortes to be loud, clear and clean. Quote Link to comment Share on other sites More sharing options...
khorn58 Posted December 30, 2004 Share Posted December 30, 2004 The Threshold amps I pick up are the s150. new in the 80s around 2500 Just like the one the music box had powering a set of khorns back in the 80s. I do rember the music box I drooled all over there Khorns for years. Only thing I ever bought from them is my trust old threshold fet 1 preamp It really has'nt been turned off since I bought it in the early eights.I maxed out my first credit card buying that . Quote Link to comment Share on other sites More sharing options...
KungFuNat Posted December 30, 2004 Share Posted December 30, 2004 i loved that store... my friend bought a pair of heresies and a sony pro amp to power them there. he still has them to this day. there used to be a huge pair of electrostatics they had for years in the small demo room. cant remember what the make was, but i remember being impressed. of course i was about 13 back then. question on the s150, are those class a, a/b or high-bias class a-a/b? also, are they ballanced amps? i know some of the old thresholds were fully ballanced. Quote Link to comment Share on other sites More sharing options...
edwinr Posted December 30, 2004 Author Share Posted December 30, 2004 One of the big problems I find with some solid state amps and high sensitivity loudspeakers like the Klipschorns, is the poor tracking of the (volume) potentiometers at low levels. One channel always seems to be lower than the other when the volumes is advanced only a little. At higher listening levels of course, this isn't an issue. The Atoll doesn't suffer this problem at all. Even at extremely low listening levels, channel balance is maintained. Very impressive. Quote Link to comment Share on other sites More sharing options...
yaffstone Posted December 30, 2004 Share Posted December 30, 2004 I use Outlaw Audio M-200 monoblock amps and an Outlaw 950 preamp. I'm running the output to Belles at the front left and right, La Scalas at the rear left and right, and Fortes center and surrounds. You have to be on top of any of the horns to hear hiss at any volume setting with no input to the amps. The Outlaw gear is clean. 0.005% THD and somewhere around 100 db S/N. The sound with signal is breath taking. Jazz, classical, acid rock, nothing ever sounded so good. I'd love to try some tubes for the fun of it, but I can't knock good SS. Quote Link to comment Share on other sites More sharing options...
Colin Posted December 30, 2004 Share Posted December 30, 2004 mmm, wonder what the THD is at 1 milliwatt, one-hundredth of a watt and one-tenth of a watt... Quote Link to comment Share on other sites More sharing options...
yaffstone Posted December 30, 2004 Share Posted December 30, 2004 Good question. I'd have to get out the O-scope and measure, but that'd imply disconnecting the system; not going to happen when it sounds so good. What are the THD numbers like on good tube units? Quote Link to comment Share on other sites More sharing options...
Colin Posted December 30, 2004 Share Posted December 30, 2004 THD with measures horrible (5%), no break-down for what type of harmonic distortion each type of amp produces.... Quote Link to comment Share on other sites More sharing options...
edwinr Posted December 31, 2004 Author Share Posted December 31, 2004 ---------------- On 12/30/2004 8:40:20 PM Colin wrote: mmm, wonder what the THD is at 1 milliwatt, one-hundredth of a watt and one-tenth of a watt... ---------------- That must be where some solid state amps come undone with horns. High THD right on the crucial 'first watt'. Quote Link to comment Share on other sites More sharing options...
jt1stcav Posted December 31, 2004 Share Posted December 31, 2004 Your ATOLL is sweet (and love those knobs)! I know that good quality SS amplification can make Klipsch loudspeakers sing just as nicely as tubes...my McIntosh MC250 did that for me! I've also heard of Threshold/Nakamichi STASIS designs sounding wonderful with horns; the ol' harman/kardon Twin Powered receivers are also a known fact. And also the mighty-mite Monarchy Audio SM-70 at 25 WPC and zero feedback...I'd love to try these out someday (several forum members here have and they swear by 'em)! Can't beat that crucial first watt, no matter what topology it is. Quote Link to comment Share on other sites More sharing options...
Q-Man Posted December 31, 2004 Share Posted December 31, 2004 I think Klipschorns and SS McIntosh amps are a match. SS McIntosh amps do more for the bass output then tubes, and the mids and highs are close to the tube sound. Quote Link to comment Share on other sites More sharing options...
pete almquist Posted January 7, 2005 Share Posted January 7, 2005 one of the things i wanted with a new amplifier was absolutely no background hiss. i'm pleased with the results from my poor-boy's amplifier an NAD C 320BEE. ofcourse with the klipschorns i can barely crank the volume control more than a couple notches before starting to rattle the windows. and as far as i can tell the balance is fine between the different channels. i wish i had a better room to set up the speakers...not only is my music room/library/office fairly small but one wall is taken up by a full length/full height book shelf and another by a passageway into the hall. still and all i enjoy the sound very much. i don't often have a chance to crank up the tunes very loud with the wife and kids in the other room (or more often than not in the same room) so the quality at lower volumes is as important to me as much as anything else. Quote Link to comment Share on other sites More sharing options...
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