• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

How to repair a Dual Anti-resonator

T

terasearch

Member
Hi All,

I got overzealous and twisted the anti-resonator on my Dual 1264 till the purported spring (purported because I've read about it but never see it or even know how it fits) broke. Now the shebang hangs like a dead weight (literally) off the tonearm, although it still functions as a counterweight.

Does anyone have any info on how these pieces are supposed to go together
(the ring, the arrow, the anti-resontator, the spring), or how to repair the thing?

I've googled but havent come up with anything useful enough for me.

Thanks,
 
Register to hide this ad
Most snap apart after removing a clip. The 701 is glued.
Regardless of which design, the spring can be replaced with that from a metal tape measure. Bend to shape, cut to size, and punch out any holes, as they may not drill out with a common twist bit.
 
I had a Dual 606 before my Revox. I am not sure if I did it or someone else did as it was my first Dual, but one day I found that the antiresonator would keep turning. I took the counterweight out from the tonearm and as soon as it was free I heard things going clunk inside. I knew it was broken and took it apart. Couldn't fix it as there were parts missing.

It's quite easy to take it apart. Just make sure you don't use excessive force. There is a flat copper colored spring in there with the free end attached to a weight. That attachment is riveted and if its broke, you cannot fix it.

Good news is, you can always buy another weight on ebay. I actually managed to get a counterweight with fluid damping that was used in Dual's better TT's with the same arm length and mass. Worked like magic.

If you scan the info on the Dual Reference website, you can figure out the length and mass of your tonearm and see which other Dual TT's that were higher end or later year models had the same arm. That way you can scan ebay for counterweights of all those models.

Notransistors: the spring was very thin and flat - kinda like inside a relay, but larger and thinner. The tape measures are much, much thicker. Worse case scenario, I would just remove the broken parts inside and use the counterweight as is till a replacement is found. What's going to happen is that you will have more pronounced arm resonance and a little muddy sound because of that. For me it was liveable till I found another counterweight from a CS627Q.
 
Last edited:
The tape spring is a perfect replacement for some Dual, including the 701. Didn't know that yours is so much more thin.
 
Thanks all. Believe it or not what had happened was my tonearm kept skating off the record. I thought it was anti-skate setting, which led me later to muck around with the CW. After I broke the CW, I realized the reason why the tonearm kept skating off was because the cart wires were hanging down too low after I had replaced the cart, lower than the stylus ,so that was causing the tonearm to skate off! How silly. Now I've got a bum resonator!

I'll lookout for a replacement as you suggest. I havent even seen the spring!

Thanks! H
 
You must log in or register to reply here.
Back
Top Bottom