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Myth, perhaps but let look what might actually the myth migh be. There is nothing “on a paper” that presumes a good sound. 109dB sensitivity is not automatically means anything and a 300B SET is not a definition of some kind of abstractive quality. In fact 95 % of all 109dB sensitive playback that I have seen I would not consider worth affords as well and 100% of 300B SETs were not interesting. So, let do not refer to the specific, perhaps poor implantations and to the specific ignorantly setup installations.  Still, can we make any generalization? I do not think it would be necessary.

Scott, in your question there are tow phases: the phase about your setup and the phase about a generalization. In context of your setup I really do not know what is going on with you.  The confusion that from my point of view you experience is observable even in the format of your post. You’re unhappy about dynamics but wiling to address the problem with introduction of more powerful amps. More powerful amp will be able amplify the signal to the same amplitude, holding more inpout voltage, but it has nothing to do with dynamic range. To get better dynamic range you need a better amplifier. So if you are unhappy with your compressed 300B SET and if you wiling to make a generalization then it would make sense to try a dynamic-range capable SET, wouldn’t? Topologically and according to all theories the SET is capable to produce dynamic range that is unspeakable for PP, unless some tricks used in PP amps and those tricks have own negative effect to sound. Why your 300B do not have dynamics no one knows….

Still I do not know why you addressing the dynamics limitation of your elections (presumably it is the problems) with “I need an amp that can maintain the purity …. while delivering more power”? Did you heard those foolish intentions with powerful and tonally dead electronic that deliver high sensitively when the loudness goes up but sound still stay at 10% of what it should be? Well, with 90W PP it would be simple to accomplish… I certainly do not say that a powerful PP could not be theoretically interesting? I juts believe in what I experienced and I personally do not see PP that would be able to work with properly made horns.

Also, “to take control the 15" bass driver in my horns” is the separate issues and you know it. Wherever you expect this driver to work as upper bass horn the driver acts as a direct radiator. So, can a 90W PP drive a large and heavy direct radiator? Probably.  Would it do ”immediacy, presence, power, and punch - the life of the music” I do not think so, as well that I do not think that “the life of the music” might be a property of only audio methods.

Scott, as I always suggest before to make any movements or make any changes try to identify the real problem instead of a random addressing of abstractive dissatisfactions

http://www.goodsoundclub.com/TreeItem.aspx?PostID=432

You can get 800W amplifier but .... is POWER something that you are looking?

Rgs,
Romy the Cat

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