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About JKent

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    Advanced Member
  • Birthday July 14

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    Appalachian Mountains of NJ
  • Interests
    KLH Model Eight radios, classic American Hi-Fi, jazz, classic rock, C5 'vette

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  1. I think that's correct. I was thrown off by the fact that the earlier Model Eight radio speaker used two 3" full range drivers, wired in series. I don't have pics of the 14s I worked on but that's how it looks in Peter's pics.
  2. Hi Stever The Marantz 2325 is a beautiful receiver and having it professionally serviced is a wise idea. There are owner's & service manuals and some other lit here: https://www.hifiengine.com/manual_library/marantz/2325.shtml One thing gives me pause. I only see ratings at 8 ohms. The 91s are 4 ohms. The Marantz is certainly robust but I don't know if it is rated for 4 ohms. Maybe ask your tech or probably other members will chime in.I did a quick google search and found conflicting opinions. In any case, I would advise against hooking up a second pair of speakers. Bill's comment puzzles me. Of course he is THE speaker guru and my questioning his opinion is a bit like a college sophomore challenging a senior professor but here's my 2 cents: The caps in there are getting pretty old and some of the caps are the black & red PVC type. They are notorious for drifting or leaking because the black material and the red material are different plastics that expand and contract at different rates. The metal cans may be fine but I would not trust the PVC caps. Kent
  3. Tom Sorry to hear about the health issues. Maybe let us know where you are located in case someone wants to pick up heavier items Kent
  4. Be careful if you go to an “expert”. Your 4x’s will need new 20uF capacitors and L-pads but the woofer surrounds are cloth and should be ok. Maybe get a repair estimate and report back here so we can see what the expert proposes. Unfortunately we have seen some botch jobs done by experts.
  5. Welcome Chuy I think all of the KLH compacts used Garrard changers with Pickering cartridges. I cut & pasted this info: "The KLH Model 20 turntable was fitted with a Pickering V-15HB/AT2B phono cartridge and a Pickering D-1507/AT D1507/AT D1507-AT needle stylus." If you google "KLH Garrard turntable cartridge stylus" you should find some sellers. I found this resource: https://www.turntableneedles.com/find10.asp?manfg=KLH&modelname=Model Twenty Six&Select=Model and this: https://needlefinder.net/product/4604d7t-for-models-1111fm20242526303435515254557176rc-4-needle-us/ Amazon has it too, or if you want to stick with ebay use KLH Garrard Pickering in your search. -Kent
  6. I would be very hesitant to apply caulk to vintage speakers. Too many other products have been tried and ended up ruining the drivers. AFAIK, Roy's goo is identical to what was originally used and won't cause any issues. It's available from Vintage-AR, so why look for something different? You do make a good case and have clearly done your homework but I'd be afraid to try the Lexel.
  7. JKent

    12.5 question

    Dunno. The only place I've ever seen it was in Service Bulletin #60 and it was called "Twelve point five"
  8. JKent

    12.5 question

    I believe what I sent was a 3" driver, originally used in the Model Eight. Here's a pic of the 4" 12.5 driver used in later Eights, with the 3". The 3" had an interesting history: Back in 1959 the audio consultants Bolt, Beranek & Newman had a project to equip the Senate chambers with high quality individual speakers for each Senator. So BB&N went to KLH and Kloss designed a speaker but the project fell through, so the speaker ended up in the Model 8 radio in 1960. The 3" speaker was very high quality. IIRC you were not able to take it apart. Unfortunately the hard plastic rim will break if the speaker is treated roughly, as you can see in the photo. I've had some success fixing them with JB Weld. Sorry for drifting off-topic.
  9. JKent

    12.5 question

    That's my understanding but I don't know for sure. I've considered using that driver in KLH restorations with blown 12.5 (4") drivers but originals are so common there's no need. Also considered this: https://www.madisoundspeakerstore.com/approx-4-fullrange/markaudio-chp-70-gen2-natural-paper/ It's open.
  10. JKent

    12.5 question

    Pete, The 12.5 driver was a 4" full-range, very similar to the Foster 10F3 I believe. KLH used them as radio speakers in the Eight, Thirteen and Twenty-One. They were the mids in the Five and Twelve and they were standalone full-range speakers in many of the compact systems such as the Eleven. They were also used in pairs in the Fourteen, Fourteen B and Nineteen, Kent
  11. JKent

    12.5 question

    Maybe not. According to Wlkipedia (and you know it can only go there if it's true ) "Beginning June 1972, Richard H. Small published a series of very influential articles in the Journal of the Audio Engineering Society restating and extending Thiele's work." Henry had left KLH in 1968 to start up Advent (to build projection TVs. By then the speakers were sort of an afterthought). Maybe ask PeteB. I think he's calculated TSPs for several speakers.
  12. Many of us here use vintage amps or receivers, and the Marantz units are very cool. But any vintage amp or receiver should be gone over by a qualified technician and that can add to the cost. Modern options would include the Crown XLS 1002. Gobs of power for $339. Or the QSC GX3 for $350. There are some for even less; the Behringer NX1000 is $250. Check out these "pro" amps at PE. Virtually all are stable down to 2 ohms https://www.parts-express.com/cat/power-amplifiers-live-sound/346
  13. But let's get back to the original question: Repair or sell? stever88: You can see by the consensus here that these are definitely keepers, IF you will listen and appreciate them. You may be surprised how good they sound. So if you do decide to keep them, Here are some thoughts: I don't want to get into a disagreement with David and AR surround. Make up your own mind. In any case, the binding posts will not have an effect on the sound. If you do keep them, bear in mind they are fairly power hungry. You CAN use a 50 watt amp but 100 or 200 or more is better. The important thing is the amp MUST be rated for 4 ohms. Most popular receivers are only rated for 8 ohms and they are NOT suitable for these speakers. You run the risk of doing damage. You are having the surrounds repaired by the best in the business if you are using Bill LeGall and this will serve you well AND will be a good selling point. Those foam or felt pieces around the mid and tweet are not really necessary. Replace them if you want, or don't. Now: Have you ever rebuilt a crossover? Are you handy with a soldering iron? The crossovers have some big metal can caps that may still be good but they also have black & red Callins (or Temple or Whale) caps that are notorious for going out of spec. We can advise you on replacement. Each speaker has one 100uF, one 40uF, one 24uF one 8uF and one 4uF capacitor. The 1st photo shows the old crossover with values labeled. The 2nd pic is sort of a "Typical" rebuild, using electrolytics (the white and blue caps in the lower left) for higher values and film caps (yellow) for smaller values. The metal cans are "probably" still good (but new electrolytics are cheap). The black caps are either bad now or soon will be. Kent
  14. IMHO that's not necessary. I've restored 2 pair of 91s and both had perfectly good binding posts that accept bare wires or standard dual banana jacks.
  15. DITTO to all of the above. I have a pair in my shop (because unfortunately there's not room for floor standers in my living room). Had Bill LeGall do the re-foam and I replaced all the caps. Beautiful sounding speakers. Here's the story of my restoration: http://www.classicspeakerpages.net/IP.Board/index.php?/topic/6565-ar91-restoration-project/&tab=comments#comment-88955 btw, be sure to use a powerful amp (the higher the better) that is rated for 4 ohm loads.
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