Electra Tube Connectors and GR Research Speaker Update Kits


  Has anyone here used one of GR Research' update kits for speakers?  My first issue is with the Tube Connectors.  Danny at GR claims them to be a superior product to everything else out their.  I cannot find any data or reviews that bolster his claim about their superiority over a high quality binding post.  The only review that I  found was with a speaker system with the cheapest quality binding posts.  I found the review useless.
  The second point is the price of the parts replacement kit.  I have not priced out the parts ( six Sonic Caps & eight better resistors, "No Rez" damping material ) but was wondering what the  the price difference between purchasing them my self as opposed to the kit.  Parts are simple swaps of the same value with the exception of a resistor on the tweeters which have a slightly lower value to raise its response.
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Showing 1 response by paulcreed

I have dealt with Danny, he is a nice honest guy that truly cares about helping you improve your sound. I have one of his monitors with sonicaps, mills resistors and foil inductors. 

I had a pair of towers sitting in a closet I wanted to sell or try to make them sound better. I sent Danny the crossover and he sent me Sonicaps, Mills, wire and inductors. It did improve the speaker. Though I did end up removing the sonicaps in the tweeter section and put in Clarity Cap CMR’s and Path resistors. That was a large improvement over the sonicap but at a much higher cost but well worth it. Much more clarity and refined no regrets on that one.


You may want to do a little research on tube connectors. I read some people have had issues with them coming unplugged. I  was scared to blow my amp which has happened before but with banana plugs coming loose. I almost tried the tube connectors to replace some Cardas copper post thinking maybe all that copper maybe over kill. I ended up soldering my speaker wire to bare wire coming out of crossover but my crossover is external so easy accces.