TS > LS> I meant amp in parallel with 8 ohm speaker, and the
TS > LS> ammeter in between the two.
TS > Do you really mean two nominal 8 ohm speakers in parallel,
TS > yielding a 4 ohm nominal load?  (Still, dummy loads are
TS > usually used for power ratings, as speakers have so many
TS > quirks.)
Yes i was using speakers to test it out, and the speakers were generating 
electricity that i expected.  Back EMF is natural.
TS > LS> The building's wiring is ok, except for line losses from the 6 guage
TS > LS> wire they feed the house on AFTER i installed the
TS > LS> proper 0/3 cabling on my 200 ampere meter feed.
TS > LS> Still hydro insists on using 6 guage from the pole to
TS > LS> the house.
TS > That's not possible for a feed of more than 60 Amps.  I've
TS > seen 4 AWG Cu THHN inside a meter housing catch fire in a
TS > 100 A service loaded to 70-80 Amps.  I wouldn't be surpised
TS > to see 1 AWG Al (service wire is often high temp rated, and
TS > not subject to the cooling restriction or flammables
TS > exposure of indoor wiring).  1/0 Cu would be nice.  You
TS > have to allow for xfmr drop and breakers too in figuring
TS > service losses.
I've never see 4 guage copper wire catch on fire except where hydro connected 
the 2 wires with steel clips from the service wire directly to the connection 
point on top of the meter pole on the side of the house.  I did notice the 
wire gets hot even though it's 0 guage connected with a steel staple and not 
a marrette or oversized wiring posts.
TS > TS > LS> speaker did not like it, i measured 167 volts at 100 TS > LS>
TS > ampers into the speaker.  I noticed amps are getting
TS > 167 V P-P into 4 ohms would yield 870 Watts and a current
TS > of 42 A P-P, or about 15 A RMS.  Either your load is way
TS > below 4 ohms, or you have a huge reactive current flow, or
TS > inaccurate metering.  What are the plus and minus upper and
TS > intermediate rail voltages?
The rail voltages were like i said earlier, +145 volts, +78 volts, 0 volts, 
-78 volts, and -145 volts.
It uses the dual rail system that only new amplifier companies are dreaming 
of and are beginning to use.  I am switching to class H amplifiers because 
they compensate for power supply drops perfectly without losing wattage or 
current. The QSC ex4000 is the perfect amp for driving subwoofers because at 
2 ohms per channel the damping does not drop below a factor of 200 at 10hz to 
300 hz. However, even though the amp is rated for 4,000 watts, i only get a 
measured 1700 watts per channel into 2 ohms before the 40 ampere breakers 
trip on it. QSC amplifiers are damn wierd because the cheapo USA 850 draws 
more current than my carver pm-1200 amplifier which is 1200 watts.
TS > TS > LS> all my amplifiers with this class AB dual rail system.
TS > TS > It would be hard to spec meaningful efficiency on such a TS > 
esign
TS > without the context of the measurement conditions,TS > as
TS > it would be highly variable.
TS > LS> Yes, i figured that much out talking to an amplifier
TS > LS> company named Mark Levinson and Krell.  Class A/B has
TS > LS> distortion which i did not know about until now.  The
TS > LS> distortion between the puch pull rails known as
TS > LS> crossover distortion when the transistors are not
TS > LS> working to their linear maximum.
TS > Crossover distortion is a bias matching problem, often most
TS > noted at low levels and high frequencies.  All analog
TS > circuits have some distortion, though the best I've seen
TS > are around 0.0002% THD.  That wasn't consumer electronics.
TS > BTW, Mark's company and Krell are both local to me.
TS > They're both a little strange, and not what is practical
TS > for most apps you're discussing.
I know, and well, i will be switching to Crown amplifiers by june.  I am 
gonna buy a pair of their 5000 watt amplfiers (single phase mind you), the 
macro MZ 5000 model, and a set of 24x6's and a set of 2400's.  All the macro 
series because i want to use the Crown Drone IQ monitoring system to tell me 
through my computer when i've opened up a driver (blown driver).
Laszlo Sokolai
Team ANTI-Windows95/PRO-OS2/PRO-UNIX/PRO-XENIX/PRO-DOS
lsokolai@bbs42.com
lsokolai@albedo.net
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