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BEC

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BEC last won the day on January 27 2014

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About BEC

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    Russellville AR

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    https://critesspeakers.com

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  1. BEC

    Oversized Hole for K-77-D

    I guess you mean the z-bracket holes compared to the K77D mounting holes? I am not certain about that. Would have to get some out to compare them. Bob Crites
  2. BEC

    Oversized Hole for K-77-D

    Actually, I do not think you could. Your corners of the cutout are rounded. I think they would have to be squared off to have that horn fit. They stopped squaring off the corners at some point before yours were produced. Some people have used them by doing some file work on the corners.
  3. BEC

    Oversized Hole for K-77-D

    This picture shows the newer K-77D and the K-77F with z-brackets installed behind it. Bob Crites
  4. BEC

    Oversized Hole for K-77-D

    Hole size is decreased in 2018 Lascala II. Not sure exactly what year they reduced the size. First of the Lascala IIs used the K-77F with standard size horn used by all earlier K-77M tweeters allowing the entire horn to extend through the motor board with z-brackets. Even after the change to the K-77D for some number of years the larger hole was maintained and earlier tweeters could be fitted to those holes using z-brackets. As of 2018 (and perhaps some years earlier), only the K-77D could fit in the holes and no way to use the earlier K-77F or K-77M tweeters. Attached is a picture of the K-77D installed in a 2018 Lascala II. Bob Crites K77D_in_2018_Lascala.pdf
  5. BEC

    Heresy II (best method for deeper bass?)

    @simon Send me an email at bobcrites@mac.com Thanks, Bob Crites
  6. BEC

    3x La Scala Needing Love

    The version you have was made after 2010. All made earlier than that were made by Tonsil in Poland and have the internal threads.
  7. BEC

    K-691 Drivers

    I have a B&C price list. There are 4 versions of the DE75 listed. One of those is the DE75PK. I can find data sheets for all of them except the DE75PK. I suspect that is the one Klipsch uses. Bob Crites
  8. BEC

    "stiff" woofer

    Our buddy Terry Cruse sent me a K-33 out of a Cornwall to see why it did not work many years ago. He had just reached (I believe) 124 db and suddenly the woofer was just silent. When I cut into it found the voice coil had come out of the magnet gap and then just impacted back into the top of the magnet assembly crushing it in the process. Might be what happened to yours. Bob Crites
  9. BEC

    Chorus II

    The CW1526CF can be used in a Chorus II but is not rated at the amount of power the original woofer is. Another consideration is whether or not it will even fit. The cast aluminum frame is 1/8 larger in diameter than the steel frame original woofer. In some cases the cast frame will fit in the recess and in some cases will not fit. Bob Crites
  10. BEC

    K55m driver diaphragm replacement

    There are no diaphragms for the K-55M. I have managed to modify K-55V diaphragms to work in a K-55M, but the procedure is not easy and I would not recommend doing that except in the case where you have a dead one and are trying to bring it back to life. Bob Crites
  11. BEC

    K-61-k horn to k-55-v adapter

    They have discontinued the Selenium 25-25 that has been around. I have some that might work. But I doubt there is room to install an adapter and the screw on driver before running into the back of the cabinet. You can send me an email. Bob Crites
  12. BEC

    K-61-k horn to k-55-v adapter

    The problem may be having enough room in the cabinet to add an adapter and thread on driver. Check that out first. Bob Crites
  13. Lots of CT120s have been installed in the Lascala II. Problem is that at some point Klipsch stopped squaring the corners of the cutout for the tweeter. The K-77D does not need them squared but the CT120 does. A few guys have fixed that in a couple of minutes with a file, but not a job for everyone. I do not know exactly when that change to the rounded corners happened but at least the first several years of production, there was not that problem. On another subject, lots of tweeters get blown in the Lascala II. I sell lots of diaphragms and K-77D tweeters to fix those. Problem is that, in my opinion the polyswitch is just not quick enough to operate and prevent damage when something really quick happens. The polyswitch has to heat up so is good for protection from high continuous power, but sudden high power or a quick transient just takes the 2 watt rated tweeter right out. Even in the olden days when the polyswitch was used in the old AL networks, when that network was used in the Pro version Lascalas, they put in zener diodes. Those will handle the quick transients. Bob Crites
  14. BEC

    LSII Tweeter Relacement

    Did you order a complete tweeter or just a new diaphragm. A new diaphragm for your tweeter is all you should need. Bob Crites
  15. BEC

    K57K screw on mid driver

    The screw on version came first so the Heppner driver could be used on the existing metal horn. Then after Klipsch got the plastic bolt on horns, the screw on snout went away and the driver bolted directly on to the plastic horn. Bob Crites
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