Stu Pidass Posted January 17, 2002 Share Posted January 17, 2002 Textf>I have a pair of 1981 Cornwalls and am interested in finding out what crossover they use. Can anyone advise what years the B2 crossovers were used vs. the B3? Regards, Stu Quote Link to comment Share on other sites More sharing options...
sprocket Posted January 17, 2002 Share Posted January 17, 2002 If it helps my 84 Corns have B-3's, K-77m (plastic), K-55k (plastic), K33e... crossovers, drivers and horns.. Quote Link to comment Share on other sites More sharing options...
Stu Pidass Posted January 17, 2002 Author Share Posted January 17, 2002 Thanks for the info Sprocket. I still don't know what '81 Corns had though. Anybody??? Regards, Stu Quote Link to comment Share on other sites More sharing options...
Colin Posted January 17, 2002 Share Posted January 17, 2002 I live with a big old pair of Klipsch Cornwalls (serial # 32x57 and 32x58) with horizontal horns. Label says they are type Walnut Oil (CWO). They include the K-33-E woofer, K-51-V metal mid-range horn and K-77-M metal tweeter horn. They have the B-2 crossover, so I guess that makes them 1 and 1/3 models. They can be bright and harsh sounding, especially on older AAD recorded CDs. The cross-over definitely needs upgrading. The letter in the serial number is the year constructed, starting with "A" for 1962 (but leave out O and Q -- those weren't used to avoid confusion with the 0), so "x" should mean they are 1982 models. So somewhere between 1982 and 1985, they went from the B2 to the B3 networks ... ------------------ Colin's Music System Cornwall 1s & Klipsch subs; lights out & tubes glowing! Quote Link to comment Share on other sites More sharing options...
Mike Lindsey Posted January 17, 2002 Share Posted January 17, 2002 Besides "O" and "Q", don't forget to leave out "V". Not quite sure why they did that but "U" is 1980 and "W" is 1981. And yes Colin, yours are from 1982. Sounds like Colin's analogy is correct tho... you should have the B-2's... Mike ------------------ My Music Systems Quote Link to comment Share on other sites More sharing options...
edwardre Posted January 17, 2002 Share Posted January 17, 2002 So.....what type of s/n convention was used after '85 and prior to '62? I could have swore that my Belle was of "O" vintage which I had mentally identified as a '74. I'll be checking that as soon as I get home tonight! ------------------ Ed Quote Link to comment Share on other sites More sharing options...
Stu Pidass Posted January 17, 2002 Author Share Posted January 17, 2002 Thanks for the info Colin. Mine are W's so definitely '81 and now I know the B2 crossover. A pair of '78 Corns recently sold on Ebay for $1850 USD!!! It's my understanding that the B2 crossover is highly saught after in the Cornwall. Combine that with a lack of production and prices on heritage Klipsch are rising quickly. Doesn't matter to me cause I aint selling. Quote Link to comment Share on other sites More sharing options...
mobile homeless Posted January 17, 2002 Share Posted January 17, 2002 For some reason, I thought the 70s model had the simple Type B.... not the B2 which was later. The $1850 pair were 78, which in my mind, made them a Type B. IS this NOT correct? The Type B is the more sought after unit, not the B2. kh Phono Linn LP-12 Vahalla / Linn Basic Plus / Sumiko Blue Point CD Player Rega Planet Preamp Cary Audio SLP-70 w/Phono Modified Amplifier Welborne Labs 2A3 Moondog Monoblocks Cable DIYCable Superlative / Twisted Cross Connect Speaker 1977 Klipsch Cornwall I w/Alnico & Type B Crossover system one online / alternate components / Asylum Listing f>s> This message has been edited by mobile homeless on 01-18-2002 at 11:30 AM Quote Link to comment Share on other sites More sharing options...
Mike Lindsey Posted January 18, 2002 Share Posted January 18, 2002 Here is a word doc of the S/N formats. I do not have anything regarding the years on x-over networks. If I'm not mistaken, I think the B to B-2 changeover occured somewhere around 1981... Mike ------------------ My Music Systems Quote Link to comment Share on other sites More sharing options...
Stu Pidass Posted January 18, 2002 Author Share Posted January 18, 2002 Well I'm still not sure what crossover the '81 Cornwalls had. Guess I'll have to pull the back off one and have a look myself. Thanks everyone for your attempts to answer. Regards, Stu Quote Link to comment Share on other sites More sharing options...
mobile homeless Posted January 18, 2002 Share Posted January 18, 2002 Stu, Take a look inside. This is the TYPE B Crossover. kh This message has been edited by mobile homeless on 01-18-2002 at 02:08 PM Quote Link to comment Share on other sites More sharing options...
khorn58 Posted January 18, 2002 Share Posted January 18, 2002 My 59 cornwall has no letter before serial #. It has the # and a date with day mounth and year filled in. I think the xcross over says kortho net work. Quote Link to comment Share on other sites More sharing options...
Mike Lindsey Posted January 18, 2002 Share Posted January 18, 2002 Khorn, Download the word doc I attached further up the thread and it will help you break down the Serial Numbers... 1948-1961 #### (0121) starting #0121 Klipschorns of this vintage had the s/n hammer stamped into the tailboard, woofer access door or inside the woofer chamber. Mike ------------------ My Music Systems Quote Link to comment Share on other sites More sharing options...
JJT Posted January 18, 2002 Share Posted January 18, 2002 I have 1981 Cornwall 1's, serial numbers 29W130 & 131, they have Type B crossover networks. Hope this helps. JJT This message has been edited by JJT on 01-18-2002 at 05:10 PM Quote Link to comment Share on other sites More sharing options...
Stu Pidass Posted January 19, 2002 Author Share Posted January 19, 2002 OK so I took off the back and am posting photos. They are slightly different from the photo that mobile posted but indicate "Type B" on the edge of the crossover. There is an emobossed "2T" beside that and it's only visible on close inspection. Can anyone verify if this is a Type B or Type B2T? Hope the photos work. Regards, Stu Quote Link to comment Share on other sites More sharing options...
Mike Lindsey Posted January 19, 2002 Share Posted January 19, 2002 Stu, I believe that is a Type B but it does look a little different (yours has that big black thing in the middle and a couple of extra caps). I thought the Type B and Type E (Heresy) only had the T2 Autoformer (Transformer), 2 capacitors and the inductor... Mike ------------------ My Music Systems This message has been edited by Mike Lindsey on 01-19-2002 at 03:21 PM Quote Link to comment Share on other sites More sharing options...
fini Posted January 19, 2002 Share Posted January 19, 2002 Looks like someone's done a few modifications. My '79 Cornwalls have type B crossovers exactly like Kelly's. fini Quote Link to comment Share on other sites More sharing options...
Stu Pidass Posted January 20, 2002 Author Share Posted January 20, 2002 There have not been any modifications as I am the original and only owner. The first time the backs were off was to take these photos. Any other ideas anyone? Regards, Stu Quote Link to comment Share on other sites More sharing options...
ShapeShifter Posted January 20, 2002 Share Posted January 20, 2002 They don't appear to be B-3's. Here are some pics of my B-3's that were removed from my 85 Cornwall I's. I replaced them with the "B" networks from my 71 II's which now have ALK upgrades. Wes ------------------ "KLIPSCH IS MUSIC"f> Quote Link to comment Share on other sites More sharing options...
Good2BHome Posted January 21, 2002 Share Posted January 21, 2002 This is a very good thread!! If someone can verify what crossovers they have in their 1982, 1983 and 1984 Cornwalls, we all will have an more accurate picture of crossovers in the Cornwall. Not perfect but closer. Anyone?? Mike This message has been edited by Good2BHome on 01-21-2002 at 11:21 AM Quote Link to comment Share on other sites More sharing options...
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