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JohnA

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  1. JohnA

    La Scala crossover

    Hi Gil/HiFi, I'm in Amarillo and can't look it up, but I have an interview of Mr. Paul where he said the woofer inductor saturated at 63 watts. That should give you a means to calculate the practical current limit of the woofer inductor. When horn loaded the woofer has an impedance of about 6 ohms. He said the 63 watts wod not be an issue for anyone but the gun shot enthusiasts. I am assuming you want the value so you can replace the inductor. Some here say that should be done carefully because it can change the Q of the woofer and change the response of the bass horn.
  2. There is NO sub in most Klipsch speakers. The typical, original K-77-M Re is about 6.7 ohms give or take a few 10ths. A K-55-V should read 10.5 ohms. The WOOFER will vary by model. Which woofer do you have? However, the Re is unimportant if the driver produces sound. All you need to know is that the voice coil has continuity. A driver's impedance is higher and varies with frequency. It becomes important when you are designing a crossover.
  3. Something like this: https://www.parts-express.com/audiocap-ppt-theta-20uf-200v-film-foil-capacitor--027-724 https://uptoneaudio.com/products/musicap-film-and-foil-capacitors https://www.partsconnexion.com/film-capacitors.html I am partial to Musicaps.
  4. JohnA

    400k on khorn upgrade

    Ciao! Before you toss the squawker horn, try wrapping the outside with an automobile sound damping material like Dynamat. https://www.amazon.com/Dynamat-10455-Self-Adhesive-Deadener-Xtreme/dp/B00020CB2S It will dampen left over vibrations in the aluminum K-400. I found it made a noticeable difference, a calming of the sound. Warm it with a hair dryer or by putting it in the sun before applying it. For your situation, I would choose the Eliptrac 400 and change the tweeter to a Fastrac tweeter horn and a B&C DE120 driver. Both horns have a Tractrix expansion curve. The Fastrac horn mouth is flush with the front of the cabinet. The Fastrac/DE120 combo is silky smooth and mates perfectly with the K-55/K-400. Replacing a K-55-V is a difficult proposition. It can safely respond down to 110 Hz, so a gentle slope crossover like the Type A is not hard on the driver.
  5. It is VERY unlikely to be bad caps, though yours are likely old and have increased resistance. You do NOT need new diaphragms, unless a voice coils has burned out. The most probable cause is a loose connection, or maybe a connection at the crossover has built-up corrosion. Loosen and retighten all of the connections on the crossover and inspect the connections at the squawker driver. Since you have HIs, last made in about 1985, It would be a good idea to replace your capacitors with good film and foil capacitors. It is an easy DIY job if you have a soldering iron and a hot glue gun.
  6. JohnA

    Crites Crossovers

    As old as they are, your capacitors probably need replacement. Nothing else. I am running B&C DE120 tweeters on Fastrac tweeter horns. They are silky smooth and respond to a little over 20k. I would recommend this combo over a horn based on the T-35/K-77 Horn.
  7. JohnA

    Old pair for rebuild

    AlNiCo woofers stopped around 1969-70, maybe sooner for the big 4 Heritage. The AlNiCo tweeters stopped in 1980 (the K-77-M responds higher). The AlNiCo squawker stopped in 1982 and returned in the early 2000s to the big Heritage. In every case I know, the ceramic magnet replacements had superior performance.
  8. JohnA

    New caps and break in

    I don't think so. The Heritage line is not supposed to sound polite, reserved or laid-back. The are big, forward, in the room and real and are brutally unforgiving of a poor recording, while a good recording will be sublime.
  9. Having heard Forte IIIs beside RF7s with the same music, I'd pick the Forte IIIs. Better balance, especially in the midrange.
  10. JohnA

    Home Theater set up for TV...?

    One hundred watts per channel is NOT low wattage. This especially is true with Klipsch speakers that need less than 10 watts per channel to reproduce a movie. His receiver may be a weak link, but is not likely responsible for his changing sound quality.
  11. JohnA

    "Shorthorns" on Craiglist ... nice pair!

    https://newlondon.craigslist.org/ele/d/klipschorn-shorthorn-corner/6615804428.html Original link didn't work for me. These look delicious! But so sadly, too far and too much. These are the shorthorn one would want! Beautifulle preserved.
  12. JohnA

    Cornwall placement in weird room

    I'd try one between the fireplace and the window and the other the same distance out from the corner on the adjacent wall. Move the couch a little and that won't totally mess up your room layout. Put HEAVY curtains over the windows (say 4 insulated panels per window). Be sure you have a rug on the floor between the couch and speakers. Maybe hang some persian rugs on the walls where reflections first strike.
  13. JohnA

    Trying to buy a matching center

    Why are you reading specs and getting down? What you want it the closest timbre match you can get. Speakers are often like wine. Price is not a good indicator of good. If the R-25C is the best match, go listen and buy it if you like it. Spend the difference on Blu-rays. Depending on your placement, the physically smaller, lighter center could be an advantage. Since there is really very little size difference and the R-25 has larger front dimensions, I'd be even more inclined to choose it. I disagree that the center match is not important. Having used a KLF-C7 and Heresies with various crossover configurations as Centers and La Scalas as rear channels, I much prefer matching speakers all around. You can hear the difference, easily. My best matching center, so far, is a Heresy with a crossover almost identical to the modified Type AAs in my La Scalas.
  14. JohnA

    Home Theater set up for TV...?

    I have only one system and it is used for everything. I get my TV from the fiber system we have and I can't say I notice any difference in sound from the STB or DVD. DVD-A and Blu-ray often sounds better.
  15. No worries! The guts of the amp are the same the world over. The power transformer converts mains AC voltage to whatever DC voltage the amp circuits need. Change the xfmr and sell it in the US, or Europe.
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