Schu Posted September 13, 2011 Share Posted September 13, 2011 I got lucky and found a set of Walnut CW's on CL yesterday... can you guys tell me what the differences between these two cornwalls(my first set and the new set) are and why and when(chronology) klipsch might have made the changes.I realize some of it is simply cosmetic, but I see motorboard differences and k33 differences. sonically they are slightly different also. why the change in badges? Quote Link to comment Share on other sites More sharing options...
neo33 Posted September 13, 2011 Share Posted September 13, 2011 Hey Schu, I have two pairs just like your. One pair with 3 ports, serial number 26U514/26U515 produced in 1980 as the 25,514th and 25,515th pairs consecutively. The other pair with 2 ports, serial number 10P870/10P871 produced in 1976 as the 9,870th and 9,871st pairs consecutively. Both set of speakers used different type of drivers for squawkers and woofers. Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 14, 2011 Share Posted September 14, 2011 Take a look at: http://forums.klipsch.com/forums/t/103886.aspx It was around '78 -'79 when the port configuration was changed from 2 ports to three ports. The reason (I was told...) was that it had to do with the grill. The 2 port motorboard required a 4 port grill board. A 2 port grill board was prone to breakage on the bottom as there were only 3 single 1" pieces to support the weight if it sagged, and almost always would break if dropped. So they used a 4 port grill. But then you had 2 vertical parts of the board in the middle of each port. So they compromised and went to 3 & 3, respectively. Quote Link to comment Share on other sites More sharing options...
Schu Posted September 14, 2011 Author Share Posted September 14, 2011 excellent... thank you both! Quote Link to comment Share on other sites More sharing options...
Schu Posted September 14, 2011 Author Share Posted September 14, 2011 one question please... does anyone know if the woofer on the older unit(right) can be upgraded to newer k33(left) without any crossover changes.. which seem to deliver slightly more bass? Quote Link to comment Share on other sites More sharing options...
Ave Bona Cornwall Posted September 15, 2011 Share Posted September 15, 2011 why the change in badges? I am not sure why the changes in the badge, because I think they went from copper to laser back to copper. perhaps it had something to do with the cost, but I think that the Klipsch is more easily identified in the copper; there is more contrast. As a company, you want your name and brand visible. Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 18, 2011 Share Posted September 18, 2011 The K-33's.... theoretically.... are more or less the same. The older square magnets had a different resonance frequency (as I was told...), and were supposedly more desirable. If you replace one woofer, you should replace both. Also since you have not "fooled" with them; I'd disconnect the woofers and test them with a meter. They should both be 3.75 to 4.0 ohms, and should be very, very close. That being said.... You should re-cap the CW's if you have not done so already. Once that's done, then any comparisons within the pairs, or between the pairs may not be valid. On my CW's, I have replaced the old K-33's with BEC's CW1526's. Caps were redone during the rebuilds, and now all is matched. [H] Quote Link to comment Share on other sites More sharing options...
Schu Posted September 18, 2011 Author Share Posted September 18, 2011 The K-33's.... theoretically.... are more or less the same. The older square magnets had a different resonance frequency (as I was told...), and were supposedly more desirable. If you replace one woofer, you should replace both. Also since you have not "fooled" with them; I'd disconnect the woofers and test them with a meter. They should both be 3.75 to 4.0 ohms, and should be very, very close. That being said.... You should re-cap the CW's if you have not done so already. Once that's done, then any comparisons within the pairs, or between the pairs may not be valid. On my CW's, I have replaced the old K-33's with BEC's CW1526's. Caps were redone during the rebuilds, and now all is matched. ^ Interesting... one pair already has C125's, the other still has 77's. is recapping that difficult? Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 19, 2011 Share Posted September 19, 2011 Early CW's are probably the easiest to DIY recap. I stayed in a Holiday Inn Express last week and I can do it..... [H] Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.