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[email protected] gaboozo99@aol.com is offline
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Default Looking for help with Cerwin Vega D-9's

Hi all,

Im usually found posting in the Rec.Games.Pinball forum, but I came
across this group while searching for some info to help repair my newly
acquired CV D-9's.

I'm the original owner of a set of D-5's since new back in 1984 or so,
and I decided I needed a bigger set of speakers for the larger home
we've moved into. These speakers having held up to the rigors of loud
and continuous partying, I figured the big brother to these should be
fine.

So to that end, I found a slightly abused set, but figured I'd delve
into the speaker repair bit as a break from pinball and video games for
a while.

The set I found is original, it seems to be an earlier version, as the
knobs on the crossovers are different than the silver center knobs on
sets I've seen elsewhere...

Here's the status. Both woofers have deteriorated foam. I have just
finised refoaming them myself with a correct set of new flat edged CV
foam for these woofers. So far so good, no rubbing of the voice coil
etc.

One tweeter was shot, I had a spare that I know works, (bench tested
for sound) and I verified that the small ribbon lead on the diaphram
of the shot tweeter was in fact broken from the voice coil. I actually
was able to solder it back, but it still has no continutity between
lugs, and still produces no sound.. Guess the voice coil is also broken
somewhere in the winding...

Both crossovers pots are completely frozen. I actually tried to free
up the adjustments with a pair of pliers, (with the knobs off of
course) and actually broke one of the grey plastic adjustment
cylinders...

So I hooked everything back up, (Ive also verified on the bench that
the 4 mids also work), but upon plugging them in, it just doesn't have
the volume they should. In fact the mids and tweeters while producing
sound, is so low, that it almost sounds like they aren't working at
all.

So, is this purely a function of the crossovers? I know that the
adjustments on my D-5's just aren't THIS dramatic as to make it seem
like there's no sound coming out at all when I turn it down, so even if
they were frozen at the bottom of the output range on all 4 pots, I'd
expect way more volume... The fuses are good, taking them out cuts the
woofers all together. and I've checked all the connections for proper
polarity . All black leads to the neg side, Blue for the pos highs,
two yellows for the pos mids, and purple for the pos on the woofer.
Red to the red input post, and the remaining black lead to the neg
input.

What do I do to turn up the volume on these? I've swapped one side for
one of my D-5's and the volume is measureably lower versus that when
one is on the right and the other is on the left..

Thanks in advance for any help, and forgive the long winded post.

Vinny