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Cerwin vega d7 phase help?

Audi0

Audi0

Super Member
Currently working on a set of cerwin vega d7. Besides a bad tweeter and foam. Somebody messed up the phasing bad. As in its a wiring mess up on both. Anybody know what it's supposed to be in a set of d7s? The d9 schemtic has the tweeter out of phase.
 
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Just for reference if anyone ever stumbles across this thread.

The D9 is in phase besides the tweeter.

The D7 may be all in phase. That's how I found the tweeters as well. The mids were all over polarity wise. I also found this on YouTube comments backing up my theory. I could easily be proven wrong.
 

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Hi, I can probably help you out. I redid my pair with real veneer a while back and took a few pics when pulling out drivers.
Let me know what/if you need more, I can pull them out and check wires.
 

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MegaHurts said:
Hi, I can probably help you out. I redid my pair with real veneer a while back and took a few pics when pulling out drivers.
Let me know what/if you need more, I can pull them out and check wires.
Click to expand...
Thx for the info. It looks like your mids are in phase. I was wondering about the tweeter mostly. As the d9 is out of phase tweeter wise.
 
It is not unheard of to have one of the drivers in a three-way crossover wired out of phase.
 
Audi0 said:
Thx for the info. It looks like your mids are in phase. I was wondering about the tweeter mostly. As the d9 is out of phase tweeter wise.
Click to expand...
Here is how the tweeter came out of mine. I color coded it with the blue dot, red/black lines.
I peeked at the the top speaker while the tweeter was out and if looking directly at it installed, it has yellow on the left and black on the right.
PXL_20240123_134309671.jpg
 
Waiting on tweeters and foam in the mail. Repaired both crossovers. New fuse holders / cheap caps from parts express and regluing of components.
Waiting on the jb weld to dry so I can drill and screw the woofer to something.
 

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I made a jig/helper for doing the foams that worked well.

Behold the refoaminator!

Started working on a CV D7 refoam today and not liking the glue up positioning, so I came up with an idea to help. We'll see soon enough if it was worth the effort to make. I was going to have the arms as friction fit but concerned of movement so it is waiting for the glue to dry. Stay tuned.
audiokarma.org

Also some pics of the full restoration of you're interested.

Behold the refoaminator!

Started working on a CV D7 refoam today and not liking the glue up positioning, so I came up with an idea to help. We'll see soon enough if it was worth the effort to make. I was going to have the arms as friction fit but concerned of movement so it is waiting for the glue to dry. Stay tuned.
audiokarma.org
 
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