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Dynaco A25 Woofer Washer

Frank Zhu

Member
My Dynaco has a typical problem of washer falling off. I am wondering how I can fix it. Should I just use glue? Thanks, Frank
 

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For the Dahlquist DQ-1W subwoofer driver, a SEAS 13" woofer, I did this:

Sub Connections.jpg


On this driver the tinsel goes through a grommet on the basket and is soldered to one of the tabs. You can see the two tinsels on the left and right in the pic going through the grommets.
Sub driver.jpg

I used the toothpick to give the washer on the back side better purchase and slathered that side (not a little dab) with JB Weld, front side some, too to give the front some part in holding the connection to the basket.

For your driver I would remove the tinsel, JB Weld the connection back onto the basket with a washer on the back side. Use enough JB Weld so that the entire connector is covered on the side that connects with the basket and have the washer covered, too. The washer is only going to hold a bit of the connection, the hard insulator and this should become one with the washer. If you have a smaller washer one that will allow the insulator to insulate but cover some of it, not touching the center post or the tinsel when reconnected that could back the first washer to add strength. Maybe this washer could be non-conductive and work great.

Not a hard repair. Good Luck.
 
Well, I am a certified idiot. While I am trying to glue the washer, somehow I managed to break the wire inside the woofer. I tried to solder the two ends together but somehow it just refused to stick together. Looking at the wire, I am not sure whether I should continue to try soldering. Help!!!!
 

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It may require flux and stuff.

Of course, one could add a chunk of wire from the connector to the tinsel and solder that in a more available area. Keep the wire loose on the connector end and solder it last so you can pull the tinsel close to avoid rubbing on the cone.

This is an easy repair as I said about the connector getting glued back onto the driver. Hope you have better luck with this one.
 
I ended up using some loose copper wire (from yellow RCA cable) to tie on the tinsel, putting one drop of solder and get it done. And it works. I think the solve is very fragile, but at least it works. Will wait when I find the right place to get it permanent fixed. Thanks everyone!
 
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