thanx: RE: [sdiy] ot: please recommend a low power pentodepower amp circuit

[Brousseau, Paul E (Paul)]

But also consider proximity-- a headphone isn't meant to project more than an inch or so (though it can quietly project a few meters) in a relatively constraint space, while a 12" speaker is generally meant to project ~500 times farther (guessing up to 40 feet) in a relatively open space.

At any rate, this is why I'm no PhD!  :)  Anything I declare should be taken as a poorly phrased question asking for correction.

-----Original Message-----
From: Peter Grenader [mailto:peter at buzzclick-music.com]
Sent: Friday, August 15, 2003 3:54 PM
To: James Patchell; Synth-Diy
Subject: Re: thanx: RE: [sdiy] ot: please recommend a low power
pentodepower amp circuit


But there are 15 inch drivers out there that are a hell of a lot more
efficient than headphone speakers. Remember, while a smaller cone will react
to less energy,  a larger cone moves a lot more air  - and this contributes
to a drivers efficiency.