dabraham
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Posts posted by dabraham
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OK, found the tread with the same single Planit capacitor (red) and no resistor:
https://community.classicspeakerpages.net/topic/8734-klh-24-capicitors-confusion/Given the variations on the KLH 24 crossovers, is it best to replace with the 4uf OR "upgrade" the crossover to the later version with the 8uf/16uf and add the resistor? Or better to stick with what was "stock" for the particular variation?
Dan
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OR is that just a label for the parts bin as Model-24??
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I realize this thread is quite old, but thought I would add some info uncovered while working on a pair of older KLH Twenty-Four. Serial numbers: 015708 and 015757. These would certainly be the early series (normal 8-32 posts) but maybe towards the end before the change to series II. The date is covered by the XO on one and is smudged on the other -- looks like Oct 24, 1968 (??). There are no resisters and only the double cap -- 2x2 uf and different than RoyC's above (a larger Red cap -- Planit brand 2x2uf 50v). [So replacing with a 4uf and done, right?]
The cool thing to have uncovered is the inducer value -- handwritten on the side is what appears to be M-24 and on the other side it is stamped 24. Does this mean .24mH? Is it worth replacing? Looks just like RoyC's above.
Dan
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Hi All,
Just getting back to these and had a chance to remove woofers and all batting so I could view the XO.
I see the 8uf clearly (see pics), but the two other are within the goop at the back plate. None of these are the older oil filled caps so I need to take them out of that adhesive mess, right? Heat gun slowly? Any best method? Can I assume they are straight up 2uf caps? So, ordering some 2x2uf and 1x8uf per speaker.
With some advise, I'll be ready to make a parts order.
Thanks,
Dan
Thanks,
Dan
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Hi All,
Yes, my error -- re-posting at reasonable size here.
Yes, veneer -- got it and noticed soon after I sent. In fine shape throughout except a couple treatable chunks. Lacquered with patches missing or blotchy on sides but with plenty remaining material so Howard's Restore is perfect and already own some. Before that I'll also do a vinegar and water cleaning (50%/50%) of the tops -- apply and wipe; repeat -- simple way to remove wax left over from commercial cleaning products. Then watco danish (med walnut, I assume). Family was in the antique biz so furniture refinishing is a strong skill (it's the XO I'll need to triple check with everyone). My wife has access to all kinds of microcrstalline waxes too so I'll do some testing if the initial finish comes out as expected (even if I only do the tops).
Should I replace the rotted gaskets under the tweeter grills? OR just don't bother opening them up unless there is a problem?
The Woofers: yes, will dope the surrounds. The "stringy" stuff in the R woofer is cover fabric shreds. What adhesive to repair the surround's attachment to the cone? I can fix the places where the surround is tucked under itself. None of it is actually detached, but showing signs of time and/or hurried work. I can fix that with a little bit of careful attention, a spatula, and the right adhesive. Some minor detaching (see detail).
Once I move and get these to a space, I'll send some properly lit pics of the finish and the woofers. In the meantime, these are the ones from earlier that did and did not load (much lower res -- I'll aim in between next time
Thanks all,
Dan
The bits of "string" are cover cloth shards.
Cloth insert; putty is really clean too -- but not new.
Circle-J marking; quality control from the Singer years?
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Ok, the moment I stopped typing, I took out a woofer. Date Stamp: May 20, 1969 (I'll let you know the other components as we go).
So, looking at the woofer basket, magnet and backplate: have these been reworked in such great detail or has time stood still since 1969? Additionally, see the tweeter grate -- looks like it just came from the warehouse (practically new old stock?) -- the goop around the grate tells a tale of age, but the metal components look too new to be true.
Also, see the interesting circle-J stamp from between the woofer and tweeter -- anyone see this marking before?
I guess I need to stop and just hook them up for a listen before doing much else. Unfortunately, because I am moving, nothing else is in the old house -- Argh. No possibility of a listen for at least four days. Push test on cone shows expected leaks (comes right back). Guy who sold them to me told me a friend received them from an older retiree along with a bunch of other mint vintage gear.
Tell me this is not some kind of wack-job over-buffing on the woofer parts or are these just a gem example of this vintage? Even the screws look too new but they do look original based on others I have seen on this site (aging is just perhaps consistent with all the rest). There is white cloth under the woofers -- not the black I have commonly noticed (any one know when that color might have changed or is this replacement material?)
Based on all the details, however, I'd like to think this is all stock and just well preserved, but I would love to hear what the experts in the community can tell from the photos.
Dan
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Hi All,
Been following the forum for a bit and I've already soaked up every ounce of brilliant help out here and in audiokarma. Awesome community! I'm a professional musician (conductor) and my college roommate some many decades ago, who worked for a pro-audio shop just outside Boston (will keep this nameless for the moment -- nothing notorious) purchased a pair of white painted 6s back in the late 1980s. He has since sold them , but I never forgot them. Absolutely astounding. Hoping I have found the same in the pair I just purchased. So far, I think so (and then some).
Purchased: KLH 6 pair #132746 & #132733. Based on Ken's Early KLH Speakers, Systems, and Components chart, dating I've found else where, the flat plate with completely screw removable components and 15K per year production from that era, I'd guess 1966 or 67 (I'll let you know when the woofers come out tomorrow). Looks to be solid walnut cabs (see rear corner photo -- no veneer, right?) Every ounce of both these bad boys seem to be original - even the edge of what seem to be--now turning to powder/disintegrating--gaskets under the tweeter grating are still visible (see tweeter pic). Damn, I don't think the grills were ever removed
- what looks like dirt on the fabric are just shadows from my poor overhead lighting. Only thing missing, I can tell, are the rear nuts on the badges (or maybe there were never any). Cabinets are in 98% mint with the foot prints from an amp or other component visible on the finish, a handful of minor dings and dots, and a bit of dulling (only on the tops) from some kind of furniture polish. Excited to tear into these but want to make sure every step is done right.
So, based on my first observations, time to purchase:
(1) some surround seal goo by RoyC via Vintage_AR;
(2) start an order for the following caps: two 2uF and an 8uF cap per speaker [or two 4uF caps in parallel for the 8uFs]. Any particular brand preferred. Any modification to consider (seems like "no" is the right answer to the latter)
Do I need anything else?
Humble apologizes to Ken as I purchased these in your state. I had to drive 2 hrs, but well worth the trip.
I'm in the middle of moving so it's going to be another couple of weeks before I get to work on these, but I'll get a look and some pics of the XO within a day or two and send just to have someone knowledgeable double check my order list.
Warning: KLH 6 porn attached.
Dan
Two crossover circuits for Model 24?
in KLH
Posted
Hi Roy -- many thanks. Will stick to the straight single 4uf each. Saves some effort as well.
Was the date clear on either of your pairs? Curious to know if mine are 1968, '66 or maybe '65? Stamp too blurred to know for sure. That pics is about as good as I can do but still can't make it out.
Dan