how many "A" watts to drive 802d 75dbs

[Kal Rubinson]

Kal,

Wimpy Class A ???

Can you be more specific

No. In general, I am speaking of a whole class of small amps, often SETs, that demonstrate a lovely, clear sound when a selected non-challenging program is played over very high efficiency speakers. Use with more challenging programs and/or loads reveal anemic bass and contricted fortissimmos. Not my cuppa tea.

Kal

[Joey_V]

What you describe has nothing to do with output power of the amps but with their different input voltage sensitivities. A 100w amp and a 500w amp with the same sensitivity will output the same power at all input voltages until the former runs out of steam.

Kal

Exactly.

[Joey_V]

Kal,

Wimpy Class A ???

Can you be more specific

MD,

Of course there are wimpy Class A amps, as there are wimpy A/B amps, and D amps, and G amps. Just because something is Class A, doesnt make it the best or semi-invincible to load and impedance shifts.

All Class A is is that the amp runs at full capacity regardless of the load the speaker presents to it.... that's all it is.

Joey

[misterdoggy]

MD,

Of course there are wimpy Class A amps, as there are wimpy A/B amps, and D amps, and G amps. Just because something is Class A, doesnt make it the best or semi-invincible to load and impedance shifts.

All Class A is is that the amp runs at full capacity regardless of the load the speaker presents to it.... that's all it is.

Joey

I was always intrigued with those small amps pushing so little watts and no switchover to B when needed.

[PavelL]

http://www.bryston.ca/BrystonSite05/pdfs/MiscDocuments/Class-A-versus-B.pdf

what do you guys think?

[misterdoggy]

http://www.bryston.ca/BrystonSite05/...A-versus-B.pdf

what do you guys think?

Pavel,

Interesting essay. I'm covered either way according to his point of view, as the Pass Labs 250.5 is an AB Amplifier with the first 35 watts in A only. So I am not "passe" as he says, but "au courant" mon ami