2. amps-preamps
  3. 1255117483

40-50w tube amp for Aerial 9

I heard the new Dehavilland 50a at RMAF and just loved it. Dehavilland says it is nominally 40w, but practically closer to 50. I have concerns that it will not have enough power for my Aerial 9s (which I also love). They are 90db sensitive (pretty good) and have an impedance of 4 nominally, 3.2 minimum, low resistance (while I know the impedance is a factor, I am not sure how to apply it in this context).

Anyway, has anyone powered their 9s with this amp or a similar relatively low power tube amp? Anyone have any other thoughts on compatibility.

Thanks much.
128x128shredder

Showing 3 responses by shredder

shredder's avatar
shredder OP
113 posts
 
Thanks Tvad, you always understand the compatability issues that I do not. And, yes, I will definitely demo in my system. There is a dealer nearby. I just wanted to determine whether it was a waste of time before the demo.

BTW, what did you think of the 50a? Anything with a similar sound that you think I should also check out?
shredder's avatar
shredder OP
113 posts
 
I have a basic understanding of how to impedance match a pre and power amp. I do not really understand how impedance works with speakers. Doesn't the power increase with higher impedance? (i.e. amps are often speced as x watts in 4ohms, 2x watts in 8ohms). If that is right, wouldn't the 6ohm impedance for the Wilson-B be a better match for the DH than my 4ohm Aerials. If you wouldn't mind, I would love a brief explanation. Thanks a lot.
shredder's avatar
shredder OP
113 posts
 
Vary helpful, thanks much.

Sorry for having more questions, but I am still learning. Anyway, how can you determine how the rise and fall of impedance for an amp correspond with rise and fall for a speake speaker?
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