TIP: Click on subject to list as thread! ANSI
echo: audio
to: T OWEN
from: BONNIE GOODWIN
date: 1996-08-16 16:31:00
subject: Re: Impedances

Hi "T"!
-> BG> I don't believe that is actually true, but often it results in
-> BG> distortion, since the amp is working much harder at a lower
-> BG> impedance, often exceeding the capabilities of the amp, which
-> BG> was why you made the observation above. Actually, damping
-> BG> factor (control over the BG> speaker in essense) increases the
-> BG> lower the impedance. This is a p good thing for subs, as the
-> BG> amp is able to dump more power to the speakers and have
-> BG> better control
-> What? Damping factor *increases* with lowerimpedance? Hopw is that? I
-> have never seen anyone claim that; in fact, quite the opposite. I am
-> aware that lower impedances will allow better power transfer, but in
-> my experience, the "damping factor" falls off, rather than increasing
-> with lower impedances. Most amp manufacturers state in the spec
-> sheets that "damping factor" is best at 8 Ohms, and gets
-> progressively worse with lower impedances. Most interesting!
  I wrote that directly online without editing offline first, and have a
bad keyboard, and the online editor was not being cooperative. Yes, as
it is quoted, it is wrong and I agree totally.
I like to hit subs with a low impedance to get as much power transfer
as possible to the subs, and then use the biggest cable I can and
shortest runs to preserve as much damping factor as possible... In the
situation of doubling amp power while maybe loosing a little damping
factor, I would do it!
That's what I had originally intend to say, or something like it.
 Bonnie *:>
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