DRBILL Posted January 5, 2006 Share Posted January 5, 2006 There is obviously something to retrofiting crossovers or Bob Crites wouldn't have any business. My speakers have AK-2 "balancing networks". Sometimes I imagine I hear a slight raspyness in very complex waveforms like massed strings or a chorus of womens' voices. It makes me wonder if I need a new crossover or perhaps there is a crack in a diaphram. I know for sure that my left tweeter has more output than the right one. (Yes, I swapped left for right amplifiers and the same tweeter was too loud.) I know quite a bit about amplifiers and precious little about speakers. I will appreciate any guidance. DRBILL Quote Link to comment Share on other sites More sharing options...
BEC Posted January 5, 2006 Share Posted January 5, 2006 DRBILL, Yes, I think you need new crossovers or at least the caps should be replaced, but I doubt the crossover is causing what you describe. I know it is a pain to do it, buy you can swap the tweeters and/or midrange drivers to see if that problem follows a driver. Could also be a connection problem somewhere including where the terminal connects to the diaphram in the tweeter. On older than the ones you have, I would have suggested that you loosen and retighten the screws on the crossover terminal strips to see if a bit of corrosion at the connection might be the problem. I think all those are soldered on your AK-2s though. If after all that, the problem definately follows a driver, we can try a new diaphragm. Bob Crites Quote Link to comment Share on other sites More sharing options...
JJkizak Posted January 5, 2006 Share Posted January 5, 2006 Yes. Don't even give it another thought. Just do it. JJK Quote Link to comment Share on other sites More sharing options...
Daddy Dee Posted January 9, 2006 Share Posted January 9, 2006 I was just thinking that there would be no way for Klipsch to service crossovers of this age, but we have the problem because Klipsch Heritage speakers are of such long lived construction. I think that all Klipsch could do is offer an AK4 xover with upgraded k55 and k77, an upgrade which I think amounts to $1800 per speaker. To have an option of returning an aging crossover to factory spec without breaking the bank is great. Thanks Bob for servicing the Heritage community with the options you have. Quote Link to comment Share on other sites More sharing options...
pauln Posted January 9, 2006 Share Posted January 9, 2006 I bought my LaScalas last year to get the AL-4 , and the new drivers, before the same spec /more expensive LS II came out. I also don't care for the look of the LS II... $1800 x 2 = $3600 So basically I bought the upgrade and got the rest of the new LaScalas for free? Quote Link to comment Share on other sites More sharing options...
mikebse2a3 Posted January 9, 2006 Share Posted January 9, 2006 Hi BEC I'm curious because I've not seen you mentioning any testing of the AK-2 and AK-3 network's capacitors. Since these capacitors are made from different materials than the Oil Types used in the A and AA Networks have you found these capacitors showing high ESR from age like the Oil Types? mike[] Quote Link to comment Share on other sites More sharing options...
BEC Posted January 9, 2006 Share Posted January 9, 2006 Mike, The crossovers you mention are newer and I haven't messed with many of them. I have rebuilt a few AL-3s of the same age as the AK-3s and almost the same design. And suprisingly to me some of them did need it based on capacitor ESR. In all cases the bad caps were the small black rectangular ones Klipsch went to sometime in the 80s. Some of those caps test very good and some very bad. I think those are just cheap caps. I doubt they will last as long on average as the oil filled caps. Bob Crites Quote Link to comment Share on other sites More sharing options...
mikebse2a3 Posted January 9, 2006 Share Posted January 9, 2006 Mike, The crossovers you mention are newer and I haven't messed with many of them. I have rebuilt a few AL-3s of the same age as the AK-3s and almost the same design. And suprisingly to me some of them did need it based on capacitor ESR. In all cases the bad caps were the small black rectangular ones Klipsch went to sometime in the 80s. Some of those caps test very good and some very bad. I think those are just cheap caps. I doubt they will last as long on average as the oil filled caps. Bob Crites Bob thanks for the information. I assume you are describing the 2mfd caps in the Tweeter circuit? mike[] Quote Link to comment Share on other sites More sharing options...
BEC Posted January 9, 2006 Share Posted January 9, 2006 Yes, the little black plastic ones. Bob Quote Link to comment Share on other sites More sharing options...
Dylanl Posted January 9, 2006 Share Posted January 9, 2006 ALK's are nice also. Quote Link to comment Share on other sites More sharing options...
J.4knee Posted January 10, 2006 Share Posted January 10, 2006 ALK's: That is just what I was thinking. Quote Link to comment Share on other sites More sharing options...
Dylanl Posted January 10, 2006 Share Posted January 10, 2006 So what about the 299B?? Quote Link to comment Share on other sites More sharing options...
LarryC Posted January 11, 2006 Share Posted January 11, 2006 $1800 x 2 = $3600 So basically I bought the upgrade and got the rest of the new LaScalas for free? $900 each, $1,800 for two. Quote Link to comment Share on other sites More sharing options...
Daddy Dee Posted January 11, 2006 Share Posted January 11, 2006 $1800 x 2 = $3600 So basically I bought the upgrade and got the rest of the new LaScalas for free? $900 each, $1,800 for two. thank you Larry. I am now going to the user control panel to change my username to : rosannarosannadannah Quote Link to comment Share on other sites More sharing options...
Gilbert Posted January 11, 2006 Share Posted January 11, 2006 ALK's are nice also. That is an understatement. ALK's are awsome. By the way, what the life expectancy of the cap's Al uses..... I've got 3 pairs of his type B Xovers, and I've just gotta ask. Quote Link to comment Share on other sites More sharing options...
Deang Posted January 11, 2006 Share Posted January 11, 2006 You need to change those out every year or so. Al has me do it for him. Might as well go ahead and send me all of your networks now and get it over with. [] I suppose a real audioloon should change them out after about 20 years or so. Quote Link to comment Share on other sites More sharing options...
J.4knee Posted January 11, 2006 Share Posted January 11, 2006 So what about the 299B?? Brett, It arrived in great shape it is assembled and ready to go. I am waiting for some stuff from parts express to build a box to switch my mains between the 299B and Yamaha Receiver for HT/2 Channel ops. I'll e-mail you later with details. Sorry I have not gotten back to you sooner. R/Jim Quote Link to comment Share on other sites More sharing options...
Dylanl Posted January 12, 2006 Share Posted January 12, 2006 Good Deal. I just want my fellow Klipsch brothers happy. Brett Quote Link to comment Share on other sites More sharing options...
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