SET the best?

QUOTE from Mozartfan:::~~Poor Mr Jadis.... so sad,......ARC in Minnesota as well....End quote

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Well not true. Jadis amps, PP amps (under 100 watts please) will work just fine with a FR speaker, provided the speaker is not over 95db sens. Here’s the thing SET’s offer a super linear *speaker disappears* musical image pair witha high end FR. But on heavier jazz/blues, big symphonic orchestra, PP amps offer the ideal power for these complex loads. Good thing about a FR is a big PP amp is not required though is usable. With a FR speaker any/all PP will work just fine.

18Hz - 20Khz transmisson lines. Somehow I don’t miss this. ~~~~~~~~~~~~~~~~~~~~~~~~~~~

I just unhooked the dual Seas Excel W18’s from the system, running a single FR W8 + tweeter, I don’t miss the dual W18’s. A high end FR does not need bass assist, as far as voicing light jazz, chamber classical. Even heavy big orch jazz, symphonic/kettle drum, you might want to add a single 10 ibch woofer, but again, there is not much below 40 hz, so why add more ohm over laod to the SET?? If you want more bass w/o adding the ohms of a W26, , maybe try Cube Neuphar’s 10 inch speaker.

SET. However, if you feel that you need the entire frequency spectrum at decent or full weight, then you may end up disappointed ~~~~~~~~~~~~~~~~~~~~~

Somehow I failed to mention,, the highs witha SET may also be a bit rolled off along with hz’s under 40.

But really in classical chamber there is not much in terms of highs,, and for your ligher weight jazz ensembles, you might want a higher sens tweeter, say 94db+,, Now I know why bache Audio uses the Fostex super horn tweeter in his FR designs. So you see there are options to achieve sparkles in the highs with SET. We love SET’s for lifelike magical midrange, how you achieve the below 30hz and above 15khz is something you will need to figure out.

Myself, a dome tweeter at 91db and a single 8 inch FR offers all the band width I need.

I'll take a  SET + FR over any BIG NAME xover type speakers, Any and all.

I'm sooooo done with xover type LOUD speakers,

yuckkkk

My 300B amp measures flat well below 30hz.

To play the bottom octave properly you need bandwidth to 2Hz. This is because once the amp starts rolling off, it does so at 6dB/octave. When you have a slope like that it causes phase shift to be present up to about 10x the cutoff frequency. This is basic filter theory. So 2Hz bandwidth allows for 0 degrees of phase shift at 20Hz.

The ear perceives phase shift as a tonality. In the case of bass, its perceived as a lack of impact, as a thinness in the sound.

In the case of a 30Hz rolloff, the phase shift will go as high as 300Hz. As a side note, speakers are not part of this phase shift issue- its something that applies to electronics.

You can get around this problem if you have enough feedback. If you have enough, the feedback can correct for phase shift.

That kind of feedback isn’t available to SETs or for that matter, most tube amps. So bandwidth is the only way to solve the phase shift issue.