Tube amps and speaker ohms


In your opinion , do push pull amps work better with 8 ohms or 4 ohms. .I am under the impression the lower the ohms, the more power is demanded from the amp....Another question, are there low powered SET amps ,and high power SET amps?
I'm looking at a 40 watt 845 tube amp for my 8 ohm, 89 db speaker.. just cked the Thor has a 86 db W18 midwoofers(2 per cabinet) and a 88 db tweeter. Will an 845 amp rated 40 watts be able to drive the 86/88 db speaker? With authority, bass, mids, highs, in dynamic sound stage? Synergy? Or poor match?
bartokfan
+++ We are more interested in which labs are actually producing a tube amp to meet demanding power hungry speakers. +++

The best amp for meeting the demand of power hungry speaker is called a transistor amp. A person attempting to use a tube amp on said speakers is called ignorant (I am being kind)

+++ I am only interested in the end result. +++

No, I suspect you are interested in your own opinion ...

Regards
Paul
Yeah but can they produce a musical image equal or similar as does 2 tube amp labs that i have in mind. Its all about who can get closest to the high fidelity musical image. Audiofeil feels since i know nothing of the tech side and so suffer from deafness. 30 yrs audio critque and now I am deaf.
Dear paul: The statement is totally accurate, it is not talking about " speaker has a benign impedance curve across the frequency range. " like you state.

regards and enjoy the music.
raul.
Paul , ss amps may be the "ideal" for demanding speakers, but since I do not care for ss amps, I look for certain tube amps that can carry a relatively heavy load. I agree stats/panels/ribbons need ss current for optimum response. Vandersteens need good ss power as well, at least hios larger models. TRhe point of the topic was to ask the GENERALIZED question that tube amps prefer 8 ohm speakers(though even 8 ohm speakers can dip to 4 ohms on huge orchestral challenges). I think the consensus agreed, though some here want to split hairs and bring up their special agenda and objections. Which is fine. I'm staying with 8 ohms, and thats that.
+++ but since I do not care for ss amps +++

That is sad. The failure you mention your experienced with your tube equipment would not occur had you been using solid state.

I own (and have owned) solid-state amplifiers that are extremely musical and will work on most speakers.

++ I look for certain tube amps that can carry a relatively heavy load +++

These tube amps are not the best sounding tube amps and more often than not, cannot compete musically with good transistor amplifiers.

+++ though even 8 ohm speakers can dip to 4 ohms on huge orchestral challenges+++

Musical genre does not influence speaker impedance. If speakers dip to 4 ohm on Orchestra, they will dip to 4 ohm on every genre of music known to man.

Speakers rated at 8 ohm that dip as low as 4ohm are not suited to for tube amplification if quality reproduction is a requirement.

+++ TRhe point of the topic was to ask the GENERALIZED question that tube amps prefer 8 ohm speakers +++

No it wasn’t. You asked a myriad of questions but not what you state here.

+++ Which is fine. I'm staying with 8 ohms, and thats that.+++

I don’t believe anybody told you not to purchase an 8ohm speaker. Most posters indicated that there are other factors you need to consider also.

Fact is, most of the posters here have system that can do orchestra. By your own admission, your system cannot – and you do have 8ohm speakers already.

Regards
Paul