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About jessiAV

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    medical electronic tech, Classic audio, travel
  1. KLH Model Six

    hi Kent, I couldn't agree more about the rear plate. My solution to sealing was to put a bead of sealant inside cabinet hole where the wood and metal plate meet, but I'd be really curious how you will do it.
  2. KLH Model Six

    Is it possible there are resistors or caps hiding inside the epoxy? I can't see any but that is how KLH did it in the earliest Six's..
  3. How Long Have You Owned AR Speakers?

    Saved my AR4x's from destruction in early 2014 and refinished their poor little water stained cabinets. They were replaced last year with later 2ax's that were in lovely nick (even the grills), needing only new woofer surrounds.
  4. Opinions on Fisher vs Scott preamps for A25s?

    Why not consider a pair of PAM preamps?
  5. KLH 20 Turntable and Speakers Help

    How comfortable are you with electronic repair? Your KLH 20 stereo system's missing audio channel may not be due to a bad amplifier since it's output stage is capacitor coupled. Yes, the signal loss may well be due to a corroded contact in one of the very old top panel switches. It may even be due to a bad output cap. See this link for it's location: http://www.raincityaudio.us/audio/klh-model-20-electrical-overhaul My guess is that these turntables use an idler wheel to transmit rotation from the motor spindle to the platter. You will know more when you remove the platter itself. Cleaning and/or replacing the idler wheel and the surfaces where it contacts may be all that is necessary. When these stereos are stored on a garage or similar moist location for long periods, the resulting corrosion can stiffen or seize the motor shaft, and freeing them is best done slowly and carefully using various weights and types of oils. These are just simple guesses as diagnosing at this distance is extremely difficult.
  6. KLH history update....model six

    If this would be of interest(?); original untouched KLH Six epoxy woofer with textured cone, serial number 068038
  7. KLH 17, variance in impedance, pair of tweeters

    If it will help, here is a schematic of the crossover. I'm afraid I can not remember where this was posted.
  8. KLH 17, variance in impedance, pair of tweeters

    Welcome, and congratulations in finding such a nice pair of classic speakers. KLH did use (red/orange?) wire nuts in wiring their drivers. My untouched KLH model Six's have them. So n worries there. The tweeter capacitors KLH used are well known to fail over time. It does not indicate abuse. The difference in resistance you've found in your tweeters may indicate a problem, but a way to tell is to run audio through them. Hopefully they are okay
  9. Dynaco 70 PA's and fm proper connectioms

    hi Dirk, To help the members here answer your inquiry, can you give an idea as to the size/shape of the listening room the Dyna 70/PAS will be plying into, as well as the volume and dynamics of your preferred recordings? You are correct about the Dhalquist's (and your Magnapan's) lower efficiency characteristics. However, at moderate volumes they can shine with tubes. The Cornwalls are the opposite of course, very efficient. And Dynaco speakers are always a lovely match with Dynaco tube gear.. There, I completely failed to answer your question ! ::laughing:: BTW, we live fairly near each other.
  10. Restoration stopped at woofer

    My feeling here is that your first step should be to see if your voice coil wiring is intact and conducting current. This is really best done with an ohm meter. If the voice coil form is tight/rubbing in the magnetic gap and you have seen some separation, that may indicate a damaged coil but a meter will tell you for certain. As far as polarity is concerned, if you were to solder the braided wires to the wrong terminals, all that would be necessary to correct things is to switch the wires connecting to the woofer.
  11. Anyone drive OLAs or NLAs with tube amp/preamp?

    My OLA's are driven by a Matisse tube circuit line stage (dual triode, no tone controls or phono preamp) driving a solid state amp. I feel this combination matches the Advent's better than my previous all SS configuration. The tube line stage seems to be more symbiotic with the tweeter and the OLA's well known midrange 'bump' isn't as noticeable.
  12. Hi, New With New To Me AR-2ax Pair

    When it was necessary last Fall (2017) to refoam my new-to me AR 2ax woofers (1973 vintage?), I also did not want to cut the center cap. I have the ~highest~ regard for Roy and if he says it is the best way to align the AR's former in the VC gap, then it is. Should I do another AR refoam, I would definitely consider shimming. Happily, the VC gap in these woofers seems to be wide enough that my hand-centering has been acceptable. My reason back then to leave the center cap intact was, before finding CSP, I wasn't sure if I could properly re-adhere it to the cone. I always trust AR for using the best glue and gluing techniques. Unlike my AR4x's, the 2ax's center cap appears capable of producing lower midrange energy, and I was unwilling to mess with those critical frequencies. Maybe I was just being silly with a 40-something year old driver, but I do believe in retaining the manufacturer's original construction whenever possible.
  13. Hi, New With New To Me AR-2ax Pair

    So Nice to meet you as well Sara I've sent you a PM so we don't bore the boys with silly girl stuff. Jessi
  14. Hi, New With New To Me AR-2ax Pair

    Owning both Original Large Advents and AR 2ax's gives me two different ways to enjoy and appreciate the subtle qualities within the musical instruments; each design reveals/enhances/removes different aspects of the music. The Advents have such deep and fast bass, the AR 2ax's possess an amazingly clear midrange. All speakers are imperfect, of course. Do I listen to one pair more than the other? Sure, but I'm not gonna tell anyone which ones! :laughing: Often dropping into CSP forums this last year, I've found myself concurring with ~almost~ everyone's impressions of what they hear, most recently Sara's and Tom's; not really surprising since we love music and have a history of honestly evaluating what we hear. Can I suggest that my past has seen me servicing and selling audio for a bit of time, some of it even pretty competent stuff? One of only a few women back in the '80's/'90's, as you can imagine. My East Coast classic speakers now bring me all the pleasure my older ears wish for, so much so that I've decided to sell on my Maggies and some other high end gear. Downsizing time. Even my lovely second set of Original Large Advents will be going too, very hopefully to a good home. It's amazing how much stuff this addiction can generate. Got a feeling I may be adding one more pair of speakers though, just for fun because I was given this set of AR 5 cabinets that only need some midranges ... Jessi
  15. Hi, New With New To Me AR-2ax Pair

    Thank you for your welcome gentlemen ! So yes, filleted surrounds have a thicker, tapered inner edge, and help damp the cone's edge resonance. A good thing with these later AR foam 10 inch woofers, I think. If I can ask, would it be safe to use my main email address as a contact addy here? Just wondering as this is not a HTTPS site