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SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
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SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
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In Reply to: Transmitter Tube SET. What Are Your Overall Experiences? posted by Mister Pig on September 5, 2021 at 08:28:26:
Something of a complicated topic with a lot of variables.
I am currently using an 805 SET amp, and am VERY pleased with it. Aside from an early life capacitor failure, it has worked flawlessly for about 5 years now. It has certainly been worth the cost of entry. I use vintage tubes, which have now become somewhat costly, so I cannot comment on NOS tubes and how they sound.
Formerly I was running a Primaluna power amp with the best tubes I could find, and was quite happy with it. The SET amp pretty much blew it away. Of course, that is MY opinion, and based on my ears and taste.
I am running Altec 604s, which have a 15" woofer, similar to your speakers. I would agree that driving a 15" WELL takes some power, and 25 watts might be adequate. I'm running around 50, and it is definitely adequate. Remember that distortion starts setting in when the amp is strongly driven, so likely it would not be optimal listening when driving the amp hard (towards the limit). Your JBLs are rated 6db down at 30Hz - you might want to look at the response curve down there to see where it starts to drop off, and where the 3 db down point is. That will properly temper you expectations on the bass side of things.
A critical aspect of SET amps, and I guess all amps aside from OTL, are the output transformers. Crap begets crap. So useful to make sure that the transformers used are as good as you can afford.
Personally I am a fan of vintage Tango and Tamura transformers. Wavac made some 805 amps with later Tango iron. There are a couple of sources of amps, but note that many of the Japanese amps are 100v, but some have 110V taps on the power transformers (which might sustain operation at 120v). If nothing else, the links might be provide some ideas. I have not purchased anything from Yahoo auctions Japan, so no idea how that works. One upside is that a domestic amp with Tango iron will likely retain its value, so perhaps can be justified as an investment.
http://soundgate.net/productlist/22.highend
https://www.hifishark.com/search?q=tango
Just my opinions, of course.....
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Follow Ups
- RE: Transmitter Tube SET. What Are Your Overall Experiences? - rogerh113 07:00:19 09/06/21 (0)
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