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

Showing 1 response by sbank

Pauly,
Your last post was one of the most helpful & educational from a practical standpoint the I've read in a long while.

Bartokfan, it might take a long while(i.e. months, not a few minutes w/Google) to fully appreciate how well Pauly broke it down. Yes, it's true that there are many types of tubes, tube amps, etc. Each of them will react to cabling, speaker matching, room matching etc. You just can't conclude too much from a small bit of exposure at a show, in a dealer's showroom, etc.
My best advice for you is to seek out a local audio club, and spend much time listening to others' rigs in their homes. Slowly but surely, you will learn which element of various designs are to your liking(e.g. SET vs. OTL vs push/pull). Cheers,
Spencer