Deang Posted September 7, 2003 Share Posted September 7, 2003 http://www.vacuumstate.com/ More specifcally: http://members.ozemail.com.au/~joeras/ Quote Link to comment Share on other sites More sharing options...
leok Posted September 7, 2003 Share Posted September 7, 2003 Dean, Interesting and useful. Thanks for posting. leok Quote Link to comment Share on other sites More sharing options...
No Disc Posted September 7, 2003 Share Posted September 7, 2003 Outperforms SET? Anyone heard it? Sonic description sounds intriguing. I'd like to Just Listen To It. No local (CUS) repensentation though. - tb Quote Link to comment Share on other sites More sharing options...
Deang Posted September 7, 2003 Author Share Posted September 7, 2003 It is an interesting design, and similiar to some other types I've been following across the web for about six months. This particular site however, provides the most amount of detail regarding the circuit and implementation. What makes this amp especially nifty is that not only is it an integrated (which is really nice for several reasons), but actually uses tubes. I've been stuck on the following page for about a 1/2 an hour, and have been trying to nail down something that has been bothering me about the graphs. The link to Lynn Olsen's site reminded me what it was: none of these graphs, as well as the ones on lynn's site are generated using reactive loads. http://members.ozemail.com.au/~lisaras/gainclonesound.htm I have real problems understanding comments like: "This (distortion level) is commendably achieved without feedback. Compare this to more modern Push-Pull Ultra-Linear Tube amps (look at his web site: http://www.aloha-audio.com/triode1.html as he provides sample measurements) are much more elevated in higher order distortions." Of course, I had gone through the material at Lynn Olsen's site several times before purchasing the Dual 70. My problem is that I can't correlate this information with the available mass of contradictory information regarding SET and distortion. http://www.vac-amps.com/page0004.html Quote Link to comment Share on other sites More sharing options...
g3dahl Posted September 8, 2003 Share Posted September 8, 2003 Interesting thread! As it turns out, Allen Wright, the other VSE guy, is coming out from Germany in about three weeks to attend VSAC here in Silverdale, Washington, where he will be a guest speaker. His seminar will be on the topic of push-pull amplifier design. He also will be bringing his new amps that he is bringing to the show for their debut (not the Rasmussen design you have been discussing). He will also be bringing his amps to my house to compare with my Lynn Olson-designed Aurora/Amity amps (see http://www.nutshellhifi.com/triode1.html). Lynn Olson is my partner in Nutshell High Fidelity (formerly Aloha Audio), lives here in Silverdale, and has recently begun to participate in the Klipsch forum. If you have questions about how to reconcile his writings with other pieces of information you run into, just ask...I'm sure he would be happy to explain further. If you have questions about the Rasmussen stuff, maybe I can pry some info out of Allen. I'm sure he's well versed in it. Gary Dahl Quote Link to comment Share on other sites More sharing options...
mobile homeless Posted September 8, 2003 Share Posted September 8, 2003 Gary, you and ole Lynn have generated much interest in the audio world over the years. But what's with the company names? Aloha Audio? NUTSHELL High Fidelity? Has it been raining that much up there? kh Quote Link to comment Share on other sites More sharing options...
g3dahl Posted September 8, 2003 Share Posted September 8, 2003 Hi kh, The name "Aloha Audio" made sense at the time, because it was a partnership between Hiroshi Ito (who lived in Honolulu) and Lynn Olson (who lived in Aloha, Oregon). Lynn started the name "Nutshell High Fidelity", back before his Aloha Audio days, for the purpose of distributing his book, "The Soul of Sound". Aloha Audio began when he and Hiroshi decided to start importing Danish Audio Connect (DACT) attenuators. The "Nutshell" name was the result of a conversation between Lynn and his brilliant wife, Karna. He had been talking about the concept of designing the speakers and amplification chain as an integrated whole. She said something about that being his whole philosophy in a nutshell, and ended up suggesting that as a name for his business. Lynn and Hiroshi dissolved Aloha Audio near the end of last year. The replacement has been Nutshell High Fidelity, with a return of the old name. It consists of Lynn and me. We import DACT, and plan to eventually sell amps and line stages of our own design. It really doesn't rain all that much around here, less than in Seattle. It's more of a myth, actually, though there usually is a long stretch of gray skies through the colder part of the year. Gary Dahl Nutshell High Fidelity http://www.nutshellhifi.com Quote Link to comment Share on other sites More sharing options...
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