LC>                           
LC>              
-> Trivia question:  Who makes the UGLIEST consumer equip?
LC>IMHO - NAD
LC>Reminds me of a bad military dream......
I have a Hafler DH 500 which is not too pretty. 
Dennis Jenkins
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FIDO MESSAGE AREA==> TOPIC: 183 AUDIO         Ref: DBZ21865 Date: 07/30/96
From: MICHAEL SUHM                                          Time: 02:31am
\/To: DENNIS JENKINS                                      (Read 4 times)
Subj: R: Ugggggly

DJ>-> Trivia question:  Who makes the UGLIEST consumer equip?
DJ>LC>IMHO - NAD
DJ>LC>Reminds me of a bad military dream......
DJ>I have a Hafler DH 500 which is not too pretty. 
-
I've got an ancient Bozak preamp with approx. 30 great, big, UGLY
knobs on the front for input and tone controls.  Disgusting....
-
Mike
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FIDO MESSAGE AREA==> TOPIC: 183 AUDIO         Ref: DBY01150 Date: 07/24/96
From: MATT ION                                              Time: 08:42am
\/To: GREG COBB                                           (Read 4 times)
Subj: Re: CAR AUDIO...NEED A LITTLE HELP, I'M

And so it came to pass, on 23-07-96 18:06,
   that Greg Cobb spake unto John Jewell:
 GC> Hello John!
 GC> Tuesday July 23 1996, John Jewell babbled to Greg Cobb:
 GC>>> Voltage, not current.
 ->> Both, isn't it?
 GC> You can generate 30 Watts RMS easier with voltage and not have to
 GC> have this really intricate power supply.
Given a certain voltage, current (and thus, power) is dependant entirely upon 
the load impedance.  With a 12V nominal rail, maximum theoretical power into 
a four ohm load is 36W; maximum current draw is 3A (remember, current is not 
something that the amp "forces" into the speakers; current is dependant upon 
how much energy the load resistance *allows* to flow through the circuit).
V=IR, or I=V/R, so 12V / 4ohms = 3A.  P=VI so 12V * 3A = 36W.  But of course, 
that's a theoretical maximum.  Given the nature of music signals, ACTUAL 
power output from the amp will generally be a lot less.
If you increase the voltage available (most high-power amps use switching 
supplies to bring the rails up to around +/- 40V or better, giving a maximum 
80V of swing) then you require a lot less current to deliver a given amount 
of power.  The more you "download" an amp by putting more speakers on it, the 
more current (and thus, power) it is called on to deliver at a given voltage 
level.
(BTW, Greg, I know YOU know this stuff... just trying to make it a little 
clearer for John).
IKEA ... Swedish for "particle board."
--- Sqed/32 1.10/unreg
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