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  1. I'm going to guess it was not for any true...

    I'm going to guess it was not for any true audio/speaker application but some sort of vibration mechanical testing driver motor. The box looks very purpose built like it was part of a portable...
  2. Since the diaphragm has been replaced maybe the...

    Since the diaphragm has been replaced maybe the shims are no longer needed. With those in place it could raise the voice coil in the gap just enough to lower the output.

    Changing diaphragms should...
  3. As for "muddier" sound, is it from lack of high...

    As for "muddier" sound, is it from lack of high frequency extension or just lower in level when compared to the other driver?
  4. For what it's worth the right driver (is that the...

    For what it's worth the right driver (is that the driver that sounds bad) in the picture with the black phase plug appears to have a shim spacer for the diaphragm.
    Maybe that space is not needed for...
  5. Post some pictures of the drivers, inside and out...

    Post some pictures of the drivers, inside and out and the crossovers if possible.
  6. If you had two amps connected directly to the...

    If you had two amps connected directly to the speaker as in the outputs of each amp were going directly to the terminals of the speakers that is VERY BAD for not only the amps but the speakers. If...
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    Here's some more info. ...

    Here's some more info.

    https://forums.prosoundweb.com/index.php/topic,177294.0.html

    https://forums.prosoundweb.com/index.php/topic,177632.0.html
    ...
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    I'll add to my original post and say that a good...

    I'll add to my original post and say that a good sound person can get excellent results from an adequate yet average sound system.

    Shows that I went to see that sounded fantastic, Eagles,...
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    Today's high end live sound systems can produce...

    Today's high end live sound systems can produce amazing results................when properly deployed and the person mixing the show actually knows what their doing. We have all heard truly awful...
  10. The heads on those don't strip out as easy and...

    The heads on those don't strip out as easy and the chance of slipping with the screwdriver and punching the cone is all but eliminated!!

    For gasket sealing Parts Express sells some thin weather...
  11. For what it's worth I use cap head allen screws...

    For what it's worth I use cap head allen screws to mount just about all of my speakers in their enclosures,
    either 10/32 or 1/4-20.
  12. Post some general pictures of the parts and...

    Post some general pictures of the parts and pieces, you may find your market for it is right here!
  13. There's slim but possible chance that Amcron in...

    There's slim but possible chance that Amcron in Elkhart Indiana could still help.

    They were the industrial division of Crown and are still located in the original location.
    I know they will still...
  14. The EV Sentry III series had an external...

    The EV Sentry III series had an external processor called the "SEQ" while you didn't need to use it though you should use it with them, among what it did was let you operate the speaker in what EV...
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    Any chance the leads are shorted to the body...

    Any chance the leads are shorted to the body after they were soldered to the terminal.

    When tightening the phase plug / bullet if it turns you most likely will wrinkle the diaphragm.
  16. Here's a link to a post I made about acoustic...

    Here's a link to a post I made about acoustic crossovers.

    http://www.audioheritage.org/vbulletin/showthread.php?42183-Looking-For-More-Punch-From-My-2245-4345-Clone/page4
  17. Actually you may want to try under lapping the...

    Actually you may want to try under lapping the crossover frequencies some, that will help with the phase response and frequency response around the crossover point.

    Keep in mind the crossover...
  18. The gray boxes look like a custom build....maybe...

    The gray boxes look like a custom build....maybe they could have been a custom shop JBL build.

    The black box looks like a SR series clone or a modded SR cabinet.

    Post a picture of the...
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    I still use blocking caps on HF drivers and the...

    I still use blocking caps on HF drivers and the days of powering them with DC300's are long over.

    If I'm not mistaken the Crown manual had a schematic for a relay DC protection circuit to put...
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    Do both channels of the amps sound the same? ...

    Do both channels of the amps sound the same?

    Keep in mind the DC (direct coupled) 300 has no coupling caps in the signal path, not saying there could
    be a few other small electrolytics that...
  21. I'm going say for home the 60 X 40 2385 horn may...

    I'm going say for home the 60 X 40 2385 horn may be a little narrow, the 2380 at 90 X 40 or even the harder to find 2382 that is a 120 X 40.

    I use the 2385's in some of my double 12 PA cabinets...
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    AE Techron was the industrial amp division of...

    AE Techron was the industrial amp division of Crown, some of the original Crown audio techs also work there
    now.
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    Check the that speakers are wired correctly /...

    Check the that speakers are wired correctly / polarity. Use a 9 volt battery and touch it across the speaker terminals and see the speakers both move in the same direction.
    With those woofers...
  24. For what it's worth I always felt the DH1a and...

    For what it's worth I always felt the DH1a and it's variants sounded better than a 2445.
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    Here's a couple custom Showco / Clair horns. I...

    Here's a couple custom Showco / Clair horns. I got a few of these and never found a use for them.
    Not sure who made them, laminated fiberglass with balsa wood dampening and support.
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