(Bruce J. Richman) wrote in
:

Art wrote:


"Rich Andrews" wrote in message
.3.44...
Matt Zach wrote in
:

I am looking at my first tube amp. It delivers 40 wpc class A. I own
an
inefficient pair of A/D/S 810 speakers.
Will I have problems with this amp driving these speakers ?
Thanks,
Matt



What do you mean by inefficient? 85db watt/meter? 80db watt/meter?
What
would be efficient to you? 90db 2.83v/meter?


And furthermore, how big is the room?




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All important variables. As is the listener's customary volume level
with
which he feels comfortable. In short, the question he poses probably
can't be
answered by simply looking at amplifier power ratings or speaker
effriciency
statistics.



Bruce J. Richman





Well, the questions posed to the original poster certainly won't answer
the question of if he will be having difficulty driving the speakers, it
is a start. I think that trying to determine if the amp is even adequate
for the SPL expected is a good first step. If the speakers are very
inefeccient and he expects 118db, then yes, his amp will had difficulty
driving the load to his satisfaction.

r


--
Nothing beats the bandwidth of a station wagon filled with DLT tapes.