TS > the largest of which I know in commercial production.
TS > Those use 3 phase power, and have a rated output Z of 0.67
 LS> Well, how well does the crown 10kw amp old up it's damping factor at 2 
 LS> ohms?. Alot of people i know run their amps at either 
I don't recall.  Note that it's rated at 2/3 of an ohm, not 8 ohms.  
Obviously they're good enough for the target customer mil contractors.  
 LS> halved.  My largest amplifier puts out a measured 
 LS> 2,000 watts per channel into 2 ohms per channel on a 
 LS> run time limited basis of only 6 hours before the 
 LS> amp's thermal lights come on.  But it does not double 
 LS> from it's 800w into 8 ohms to 1325 watts into 4 ohms 
 LS> then to 2,000 watts into 2 ohms per channel.  Bridged 
 LS> mode is just plain lethal.  And this amp does not 
 LS> even use 3 phase power at all, only 2 20 ampere 117 
 LS> volt twist lock plugs.
TS > The larger Stewart amp is about the biggest for which I see TS > a 
practical need in pro audio.  At 17 lbs. and 2 rack
TS > units, one can power two double 18 bins and 4 double 15 TS > plus mid & 
high wedges with a single rack two men moving TS > the bins would find easy 
to lift.  (5 amps, 2 on 18's, 2 on TS > 15's, one in stereo mode for mids and 
highs, under 150 lb. TS > rack with crossover and AC distribution)  That 
allows a TS > choice of using a temporary 60 or better amp 240 single TS > 
phase drop, or scarfing up 4 120 circuits per rack, for an TS > 18,000 watt 
four way system.
 LS> 17 pound amplifier running bassbins?,  Does it have an 
 LS> external transformer or does it run directly off the 
 LS> 120AC without a toroid?
TS > Of course such amps have some peak headroom too, but that's TS > not 
what sustains solid audio outside someone's bedroom. TS > Besides, with a 
10,000 W amp, 2 AWG welding cable would be TS > inadequate for speaker wire.
 LS> Depends on current gain.  I use cabling of no more 
 LS> than 20 feet from the speaker of 8 AWG cable for the 
 LS> 100 sustained amperes per channel my largest amp can 
 LS> do without going into protect if a short circuit would 
 LS> happen (i've tried it, it melted the cable and dimmed 
 LS> the lights in the whole 240/120 volt distribution 
 LS> box).
TS > Now for a really big audio amp, look at the modulator
TS > section of a high level modulated shortwave transmitter TS > sometime.  
Those can exceed 500,000 KW audio output for a 1 TS > MW TX.  (Let's just 
hook these 300 8 ohm speakers in
TS > series....)
 LS> RF has no room in pro audio, unless you were talking about RF amps.
 LS> Laszlo Sokolai
 LS> Team ANTI-Windows95/PRO-OS2/PRO-Unix
 LS> lsokolai@bbs42.com
 LS> --- BBS 42
--- Maximus 2.01wb
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