BINGO! I'll bet one of your speakers is bad and showing the amp a short or
is actually shorting directly to ground. Disconnect all of the speakers and
then reconnect them one at a time until the noise comes back. Once you find
the set that's bad you can do the same thing to see if it's the mid, tweet
or crossover itself.


Paul Vina


"dconder" wrote in message
...
Well, lets throw another log on the fire. I tried several different cable
combinations and it is pretty much the same deal. I now have my setup
exactly the way it was. The JL 300/4 bridged and the gains on both amps
all
the way down. The hum is still there although not as loud. My problem
now
is that when I turn the volume up to about 3/4, (Eclipse goes to 80, so
60),
the front speakers shut off. I do not even have to get to 60. Anywhere
from 50-60 and they will shut off for a second or two and then might cycle
on and off. Could there be something in the Diamond M661's that could be
causing all the problem. Even with the gains down, it will get pretty
loud
but, it just shut them off. Where do we go now.

I am pretty convinced the rca cables and the amps are fine.


"Paul Vina" wrote in message
news:GwZdb.631995$Ho3.121509@sccrnsc03...

"Douglas Conder" wrote in message
ink.net...
Right now, they are down about to the bottom. I do use a test cd when
I
set
the gains and a multimeter to set to the JL specs. The one weird
thing
on
setting is the Eclipse has 5 volt preouts. The JL has a low/high
setting
for input sensitivity and with the Eclipse, it should be on high.
But,
if
I
set it on high, even with the gain all the way up, it will not reach
its
target voltage. That has puzzled me as well. Maybe all of this is
related
somehow.

\


They might not be 5V preouts. Sony used to say their HU's had 4V
preouts
but it was 2V per channel.


I am going to buy a really good set of long cables today so I can do
some
outside the vehicle and vehicle to vehicle testing. I too, think the
JL
amps are fine and it has to be farther up the chain. My rca's now are
Rockford Twisted cables run down the center console but, they have
been
thru
several installs and vehicles and maybe something has happened to
them.



It's possible. The strain of being moved around and pulled on a lot has
been
known to damage them.


Paul Vina