Dsrtjeeper Posted March 6, 2011 Share Posted March 6, 2011 Hi! I just purchased my first pair of Klipsch. They appear to be 1984 Cornwalls. The problem is that one speaker is louder than the other. The tweeters are new and all drivers are functioning. These have the K-57-K mid horns. The boards are the B-3 version. Could it be the x-over? I couldn't pass up the deal on these and they sound wonderfully musical. The only problem is they are too boomy in my small room. Thanks! Quote Link to comment Share on other sites More sharing options...
cfelliot Posted March 6, 2011 Share Posted March 6, 2011 ....The only problem is they are too boomy in my small room. Move them off the floor. I have mine on casters. Quote Link to comment Share on other sites More sharing options...
DizRotus Posted March 6, 2011 Share Posted March 6, 2011 Double check the connections of the drivers at the balancing networks for proper and consistent polarity. Also check the speaker input connections for polarity. Quote Link to comment Share on other sites More sharing options...
Guest " " Posted March 6, 2011 Share Posted March 6, 2011 Double check the connections of the drivers at the balancing networks for proper and consistent polarity. Also check the speaker input connections for polarity. ditto. I would go as far as installing star lock washers under all the screws on the crossover board. Check the polarity of the connections on the board. Quote Link to comment Share on other sites More sharing options...
Dsrtjeeper Posted March 6, 2011 Author Share Posted March 6, 2011 I checked all connections and polarity is correct and terminals are tight. I had thought about raising the cabinets off the flloor and will try tomorrow. I definately can't place them in the corner. Waaaaay boomy. I just read several threads where people mention the one note and boomy bass. This is what I'm experiencing but I suspect the problem is my small room. Quote Link to comment Share on other sites More sharing options...
Dsrtjeeper Posted March 7, 2011 Author Share Posted March 7, 2011 Well it appears the x-over is bad as the mid horn was not working in the one speaker. I temporarily hooked the mid to the input terminals on the inside back panel and the mid came alive. How can I tell which component on the x-over is bad? Thanks! Quote Link to comment Share on other sites More sharing options...
moray james Posted March 7, 2011 Share Posted March 7, 2011 Eric: there will be a large cap feeding into the auto transformer 3 or 4 uf depending upon your xover but will be marked that is the cap which has gone bad. Youu can replace that one (maintain polarity if it is an electrolytic) or use a plastic cap like a mylar (which is non polar so either direction). chances are the other caps are on the way too but this will get you up and running. Good luck buddy. Best regards Moray James. I can mail you a drawing if you need it. Quote Link to comment Share on other sites More sharing options...
moray james Posted March 7, 2011 Share Posted March 7, 2011 found a drawing which will be close enough for you to see what goes where on your board. Best regards Moray James. Quote Link to comment Share on other sites More sharing options...
Dsrtjeeper Posted March 7, 2011 Author Share Posted March 7, 2011 Eric: there will be a large cap feeding into the auto transformer 3 or 4 uf depending upon your xover but will be marked that is the cap which has gone bad. Youu can replace that one (maintain polarity if it is an electrolytic) or use a plastic cap like a mylar (which is non polar so either direction). chances are the other caps are on the way too but this will get you up and running. Good luck buddy. Best regards Moray James. I can mail you a drawing if you need it. Gracias Senior! That was the only cap I didn't try to bypass thinking it must be for the woofer. That thing is the size of a can of Red Bull! I bet the new ones are much smaller. I have some Solen caps around here somewhere. Is it better to use two in parallel or one 3 or 4 uf? Thanks! Quote Link to comment Share on other sites More sharing options...
Dsrtjeeper Posted March 7, 2011 Author Share Posted March 7, 2011 found a drawing which will be close enough for you to see what goes where on your board. Best regards Moray James. Mooray; I think your drawing is for a Cornwall ll x-over. I have the B-3 x-over which seems to be wired differently. The large cap goes from the negative input to the positive woofer on the terminal strip. Quote Link to comment Share on other sites More sharing options...
moray james Posted March 7, 2011 Share Posted March 7, 2011 see if you can find a xover schematic at Klipsch service dept, I don't have a copy of this. On the original B crossover the cap is 4 uf for the mid and 2 uf for the tweeter. so there are only two caps on that board, big for mid small for tweeter. That's all I got for you. good luck buddy Moray James. Quote Link to comment Share on other sites More sharing options...
moray james Posted March 7, 2011 Share Posted March 7, 2011 this may be closer to what you have. Regards Moray James. Quote Link to comment Share on other sites More sharing options...
djk Posted March 8, 2011 Share Posted March 8, 2011 A 1984 Cornwall is likely to have the B2 network with a K33E, K57, K77. http://forums.klipsch.com/forums/storage/3/495595/Klipsch_B2_network.jpg Quote Link to comment Share on other sites More sharing options...
Dsrtjeeper Posted March 8, 2011 Author Share Posted March 8, 2011 A 1984 Cornwall is likely to have the B2 network with a K33E, K57, K77. http://forums.klipsch.com/forums/storage/3/495595/Klipsch_B2_network.jpg Mine definately has the B-3 and is labeled as such. With some help; I discovered that the connections on the screw terminal were coroded. I cleaned those and the mid horn works but is quieter than the other speaker. I'm going to switch that driver with the louder mid and see if the problem follows the driver. Thanks! Quote Link to comment Share on other sites More sharing options...
moray james Posted March 8, 2011 Share Posted March 8, 2011 Older electrolytics (which yours are) can take some time to charge up and behave normally. If your speakers have not had any play time for a prolonged period of time they may just need some run time to get their act together and play at the same level. I would suspect the caps before I looked to the diaphragms. New polyester caps are cheap and will be a big upgrade from the stock electrolytic crossover caps. That way if you sell them later you can advertise an upgrade and not have spent a lot on a speaker which may be on its way out the door. If you decide to keep them you can look into better caps and crossover mods and such.You can see that changing out your electrolytic caps every 25 years is a good idea. Best regards Moray James. Quote Link to comment Share on other sites More sharing options...
Dsrtjeeper Posted March 8, 2011 Author Share Posted March 8, 2011 Older electrolytics (which yours are) can take some time to charge up and behave normally. If your speakers have not had any play time for a prolonged period of time they may just need some run time to get their act together and play at the same level. I would suspect the caps before I looked to the diaphragms. New polyester caps are cheap and will be a big upgrade from the stock electrolytic crossover caps. That way if you sell them later you can advertise an upgrade and not have spent a lot on a speaker which may be on its way out the door. If you decide to keep them you can look into better caps and crossover mods and such.You can see that changing out your electrolytic caps every 25 years is a good idea. Best regards Moray James. I ordered Crites x-over rebuild kit today. Hopefully that does it. All speakers are working. I did discover the bases are missing on the Cornwalls. Ooops! I didn't even give them a thought before purchase. I'm sure that getting them off the floor will help with the overwhelming bass in my small room as mentioned above. Maybe the mids and highs will come up in volume with less resistance from new caps. This may balance the sound out some. Thanks! Quote Link to comment Share on other sites More sharing options...
muel Posted March 8, 2011 Share Posted March 8, 2011 ... I did discover the bases are missing on the Cornwalls. Ooops! I didn't even give them a thought before purchase. I'm sure that getting them off the floor will help with the overwhelming bass in my small room as mentioned above... It is amazing what a difference just a couple of inches makes! Quote Link to comment Share on other sites More sharing options...
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