jimjimbo Posted April 10, 2014 Share Posted April 10, 2014 I'm sure folks have experience with upgrading all of the internal wiring of the Cornwall line. I feel like I'm playing with fire if it's not replaced after 32 years....What do folks recommend for brand, type, gauge, etc.?? Thanks. Quote Link to comment Share on other sites More sharing options...
moray james Posted April 10, 2014 Share Posted April 10, 2014 (edited) reflow any solder joints and cut off the old spades and install new ones and solder them after you crimp the new spades to fresh clean wire. That will sound about as good as just about what ever else you care to buy and install. If you really feel inclined get some ofc fine strand 16 gage PVC insulation hook up wire and twist it into pairs with a drill, install new spades crimp and solder. Be happy. Do other mods which will buy you greater results. Best regards Moray James. PS: regarding your comments on hard wiring with silver solder. I would suggest extreme caution to all about this. You need to be a very capable solder to use silver solder as it has such a high melt temp. It is very easy for a average skilled person to screw up a driver especially a tweeter when using high melt solders so please be careful. Crimp connectors when properly installed are better than a solder joint as the joint is a cold weld with no dissimilar metals. Light weight crimps as used in most loudspeakers don't have enough metal mass to stay compressed tight on the wire and so the recommendation to solder the joint to add strength think of it as as insurance. If you clean the connection and add a small quantity of micro powder silver loaded silicon you will have stunning sound quality and the ability to easily disconnect your driver when necessary. Edited April 10, 2014 by moray james Quote Link to comment Share on other sites More sharing options...
twistedcrankcammer Posted April 10, 2014 Share Posted April 10, 2014 jimjimbo, Your Cornwalls have the white Lamp Cord wiring with red and black marks on them right??? Not a thing wrong with that wiring unless it got all corroded at the terminal ends. Also, if you have a 9 volt battery handy, you can check if your woofers are good by disconnecting the wire to the cross over that go to the woofers and touching the wires to the 9 volt battery and assessing for cone movement. Roger Quote Link to comment Share on other sites More sharing options...
Paul29 Posted April 10, 2014 Share Posted April 10, 2014 (edited) what i did and noticed: have only Heresy ones so have no experience with Cornwall at all. What changed my heresy. I take one box- to start with- left right - so to listen and hear the difference with all kind of music. Have a E-2 filter in them. Changed the 33uF to a excellent new audiocap- > result positive Changed the first 2uF with a 2.2uF audyn-cap plus > result very positieve. Replaced it with a silver in oil 2.2 uF > result excellent and to keep. If i came across a used copperinoil or silvergold i do not hesistate. Looking at the wiring and spades on the crossover -wood. I took out the original stuffed with metal spades connections at first. I keep it so can place it back within minutes. Only the autotransformer and 4mH choke to unscrew I soldered the capacitors & wiring directly to the autotransf. and each other as much as poss.. I used some cardas hook up wiring 18.5 for mid and low and 20.5 for tweeter. Happy to get rid of all the metal spades they are not for music but for the ease of use >cause the result positive. I use silver solder from mundorf which flows very nicely. So now have one Heresy which is not a heresy any more but the difference is worth the work. It is still not a Saint or swinging monk/angels either....Guess the wiring is just electrical 110v wire out/from of the mains. When the other speaker done might consider changing the autotransformer with a new Bob one.Think there is no more i can squeeze out this speaker . (....Only to write a new song based on: From a jack to a King.....into From a Heresy to St.John.... ask Melanie for some.. ....https://www.youtube.com/watch?v=NcTKSMZCFKU..) So only changing the older wiring does not appeal to me. How to connect them seems as even or more important. Not gonna let the quality cardas wire be reduced by all the spades.(Cardas seems to good actualy...) Maybe of any use ..( i can be bit naughty at times..correct me if too....) Edited April 11, 2014 by Paul29 Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted April 10, 2014 Share Posted April 10, 2014 I agree with Moray. If there's no corrosion, be sure connections are tight and let it eat. Quote Link to comment Share on other sites More sharing options...
Max2 Posted April 10, 2014 Share Posted April 10, 2014 (edited) Even good wire is dirt cheap. If you're gonna break the seal, might as well freshen it all up. Update your X-over caps too while you're in there. Here is decent wire http://www.knukonceptz.com/productMaster.cfm?category=Karma SS Speaker Kable Edited April 10, 2014 by Max2 Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted April 10, 2014 Share Posted April 10, 2014 If you're gonna break the seal Replace the seals (gaskets) or install some if there aren't any. Quote Link to comment Share on other sites More sharing options...
Max2 Posted April 10, 2014 Share Posted April 10, 2014 jimjimbo, Your Cornwalls have the white Lamp Cord wiring with red and black marks on them right??? Not a thing wrong with that wiring unless it got all corroded at the terminal ends. Also, if you have a 9 volt battery handy, you can check if your woofers are good by disconnecting the wire to the cross over that go to the woofers and touching the wires to the 9 volt battery and assessing for cone movement. Roger Did the battery test, and there is nothing from the woofers, no movement, zippo. Waiting for the multimeter to arrive. If the back is off the cabinet, have you tried to just touch your speaker wire to the contacts on the woofer? With the volume tuned way down Oh and when you strip that old factory wire, if the copper is black, its oxidized. If its green I think its a sign of moisture. I wouldn't use it unless its still shiny. Quote Link to comment Share on other sites More sharing options...
Deang Posted April 10, 2014 Share Posted April 10, 2014 The old factory wire is tinned copper, and like Moray and Roger said, there's really no reason to mess with it unless the connections are bad. A superior equivalent would be the Supra from Madisound. 9v is a bit much for a driver test. A C sized battery works just as well. Quote Link to comment Share on other sites More sharing options...
IB Slammin Posted April 11, 2014 Share Posted April 11, 2014 The old factory wire is tinned copper, and like Moray and Roger said, there's really no reason to mess with it unless the connections are bad. A superior equivalent would be the Supra from Madisound. 9v is a bit much for a driver test. A C sized battery works just as well. Agree with Dean and the guys. If you have a good connection then don't bother. If you want to improve your CW's there are many worth while mods to consider. Should be many old CW mod threads for you to look at here. tc Quote Link to comment Share on other sites More sharing options...
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