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Posts posted by JohnA

  1. I have a pair.  I will recommend you do not use the Ti diaphragms unless yours have failed and OEM is unavailable. 

    Use quality film and foil caps (expect $$$).  I used Solen metalized caps and find there is a subtle harshness or edginess to higher tones.  It took a while to notice, but now I don't like the effect.  You might find the metalized caps can be used in place of the woofer EQ cap to save money with little impact to sound quality.  That room has my H IVs so the KG2s aren't used much and I have little motivation to change them.  

  2. Look at the edge plys on the back for the serial number stamped into the cabinets. 


    Listen to them for a while, before changing anything.  I had one late '60s H700 (a '67 and a '68, I think) that needed new capicitors because it sounded a little dull and recessed and another one that did not.  If you have no rubbing, buzzing, or ringing from any driver, they are good and need only to play music until they can't. 

  3. Memory is a ethereal thing, but I recall that the K-400, on a baffle, had an fc of 273 Hz.  I also thought the *length* of the horn controlled its fc and the mouth area determined the response ripples it had (or didn't).  I seem the remember the La Scala bass horn had an fc of about 70 Hz and acted more like a woofer in a corner from 70 to 55 Hz or so.

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  4. My Heresy IVs are not bright at all in my room.  They even tend to be dark.  I contend they do not *need* a subwoofer as only the low E and F of the bass is down from the rest, but not so much that you would think it was a deficiency instead of being recorded that way.  You will miss the lowest notes of of a 5-string, but those are rare outside Jazz.  


    I recommend you look at any of the Reference Premier Subs.

    • Like 1
  5. On 4/16/2024 at 8:30 PM, rayrcanales said:

    I currently have a Kenwood KA 5700 and KA 5500 Tuner completely refurbished and a pair of Heresy that I'm going to be selling to fund part of the new amp



    I had that amp and, I think, a KT-5300 tuner in college.  It was a nice piece of kit.

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  6. "K" means 1972.  We would have to see the label on the back or the insides to say more.  "WO" means Walnut Oil and "12" means a 12-inch woofer, but almost all Heresy have that.  They may well have all AlNiCo drivers.  Some people think that makes them sound better. 


    Take 'em home wipe them off with a a barely damp cloth and later rub them down with a little lemon oil and enjoy!  You amp should produce between 10 and 75 watts, RMS.  They won't need much.  

  7. On 3/26/2024 at 4:15 PM, luca78 said:

    Do these drivers have alnico magnets? What restoration work should I do on these speakers?


    The woofer is not AlNiCo, but is likely original.  Unless they sound recessed, polite, or dull and all the drivers work they need no restoration.  You might rub a little lemon oil on the veneer. 

    • Like 1
  8. On 3/26/2024 at 3:58 PM, chronometers said:

    Hi -- Does anyone know whether the T-35 super tweeter is now being produced for Klipsch by Dai-Ichi and being supplied by High Performance Stereo (HPS) of Henderson, NV?


    The following article from 2010 seems to indicate so.  




    As I mentioned in the previous post, HPS is utilizing Crites AG-55G mid-range drivers in their theater speakers.  


    Nope.  Crites is reselling John Allen's A-55G.  Mr. Allen spent a small fortune improving, slightly, the 2-piece phase plug PD-5VH.  Apparently, Mr. Allen did sell his T-35 to Klipsch as a K-77-F.

  9. On 3/9/2024 at 5:04 PM, isthatfreedomrock said:

    I am currently using a Kenwood KA5700 Integrated Amplifier to power all 4 of my speakers (a pair of KG4's and Forte II's). Has worked fine for a few years but the bulb just went out. So might replace the unit all-together.


    Question 1: Is that amp sufficient or is it under-powering my speakers?

    Question 2: Is there a modern amp anyone can recommend that is strong enough to power all 4 speakers? 




    There is no such thing as "underpowering" speakers.  Once the sound quality and distortion of the amp is good enough, it is only a matter of, "Is it loud enough?"  If you can achieve the loudness of the live music you like (say 105 dB for an orchestra), you're good. 

    • Like 1
  10. On 3/18/2024 at 1:09 PM, Jeff Matthews said:

    I did generally understand this point, but you brought it home a lot better.


    The main question I had is whether the signal will bypass the laptop's DAC and go to my SU-1 DAC if I connect my laptop's USB-C port to the SU-1's USB 2.0 port.


    There will probably be a driver or software setting that will make it so.  I doubt every/any digital stream running through the computer is supplied to any usb port all the time. 

  11. OK, the best I can find about the Pyle LW1540 looks like they would make a horn woofer.  That should not be a surprise to you who knew Gil built speakers. 


    Brand Model    X    Vas    Qts     Fs    Sens    Pmax    Xmax    Production        MMS          Qes

    Pyle LW1540    41    306.4    0.6516    29    92    150    7.6    Discontinued      .10084    .7    0


  12. On 3/12/2024 at 12:01 PM, Abomb said:

    Any suggestions for what I should play on mine when they show up? Two Heresy IV's in Black Ash showing up by 7PM today. 😁


    At least 40 hours of Dub-step with the bass knob at full boost; doesn't have to be loud.  Just shut the door and go have dinner and a movie. 


    Then, I'd look for "Unforgettable" by Natalie Cole and "The Book of Secrets" by Loreena McKennitt and listen for all the cool nuances. 

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