JKent Posted June 7, 2018 Report Share Posted June 7, 2018 Although I've rebuilt several Model Five crossovers I don't actually own a pair of Fives. Too bad because i really liked the ones I had several years ago. Recently I refurbished a pair of KLH Twenty-Threes for a CSP member and when he picked them up he gave me a pair of Fives! The cabinets looked really bad. Virtually every corner had a BIG chunk missing. Then there were the usual scratches, and all the dust caps were pushed in. They looked so bad I even considered "parting them out." Decided to try to resurrect them. Pictures of the cabinets will follow but I filled the big chunks with epoxy. I don't have Glenn's skill or patience to fit in all new pieces of veneer and fortunately all the bashes are on the back edges. Given the fact that the speakers were free and I was not sure if they could be resurrected I decided to do a "no cost" crossover rebuild using parts from my parts box. Yes, I did pay for them at some point so it's not really "no cost" but there was no NEW outlay and I used a lot of inexpensive parts. I replaced all of the 5w resistors with 10, 12.5 or 15w. Resistors don't go "bad" but ever since finding burned 5w resistor in a Model Five and another in a Model Twelve I always replace them. The 25uF is made up of 2 Madisound surplus 10uF mylar caps + a Russian 4.7uF polyethylene. The 16uF is one 10uF surplus + 1 Carli 6.0uF. For the 4uF I used some Carli 3.9uF for 2 of them in each xo but that exhausted the supply so I used a surplus 3uF film + a 1uF Carli. The 3uF is a surplus film cap. All of the components were very inexpensive except for the 6 ohm resistor which is a Vishay finned aluminum job (about $4 each). I think all of the other components were under a buck apiece. I think the cobbled-together 25uF caps cost about $1.70 ($0.50 each for the Madisound surplus caps and 0.70 for the commie poly. Love those Madisound surplus deals!). I'm working on the cabs and will post photos when they're ready. KLH used a very tough lacquer (I assume) and it's taking a LOT of lacquer thinner, steel wool and paper towels to get it all off but I think the result will be worth the effort. -Kent Quote Link to comment Share on other sites More sharing options...
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