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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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In Reply to: why so much emphasis on SE triode? - push-pull wo nfb can be excellent posted by freddyi on May 23, 2001 at 01:38:37:
Hi Freddy,I'm not so sure that it is a matter of one toplogy being better than another, or the best in all respects. Different approaches have their strengths and weaknesses. After I finally got my bass horns assembled and installed in my system, I mostly used a solid state amp for the first couple of weeks. It had the bass extension and slam that I could never hope for from my SE 45 amp, and was perfect for playing "Oh yeah" by Yello at 110dB.
What I've found is that, over time, I keep returning to the components and technologies that give me the most realistic lights-out listening experience overall. The transformer coupled SE triode amp is a mainstay, despite frequent experimentation. I believe that SE triodes deliver more low level detail than PP amps, all the subtle chair squeaks and reverberant tails that place the listener at the recording venue. The best explanation I've heard is that microvolt signals represent tiny variations in the constant flux in the transformer core and are passed easily, whereas they have to survive the most nonlinear portion of the push pull transformer's operation, where the fields are collapsing and reforming. I also like the argument that the SE amp maintains a natural mix of even and odd harmonic distortion products, which the ear accepts easily, whereas the PP amp cancels the even ordered harmonics, leaving only the odd ordered harmonics, which the brain recognizes as the sound of a chain saw (just kidding!).
Certainly a DHT PP amp will offer a very convincing sound, probably the best that PP has to offer. I still think there's something to this SE business, however. My first SE listening experience, back in 1986, was with a cheap integrated amp I had found on the sidewalk. A friend and I listened to it for hours on end, amazed at the sound. It used 6BQ5s in the output, running in SE ultralinear mode with screen taps in the output transformer primaries. Hey, wait a minute; that amp is still over at my friend's house!
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Follow Ups
- Re: why so much emphasis on SE triode? - push-pull wo nfb can be excellent - Steve Schell 05/23/0103:50:50 05/23/01 (2)
- Re: why so much emphasis on SE triode? - push-pull wo nfb can be excellent - john dem 08:28:05 05/23/01 (1)
- Re: why so much emphasis on SE triode? - push-pull wo nfb can be excellent - TC 09:52:42 05/23/01 (0)
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