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Disintegrated Woofer Allen

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  • jbird604
    commented on 's reply
    I was going to remark that this is the perfect setup for a "closet organist," but maybe I shouldn't.

    Nice repair job though! Allen HC cabinets can't be beat for good solid organ sound, and yes, they are quite superior to the internal speakers in most Allen consoles.

  • PghBear210
    replied
    Click image for larger version

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ID:	738182 Oops.
    I forgot about this post.

    Here are the re-foamed speakers.
    They actually sound better than the internal speakers.
    Even the channel separation echos slightly off the walls between the console and these speakers.
    Good choice to rebuild.

    BLB2k

    Leave a comment:


  • PghBear210
    replied
    Yep. That's the one. Rebuild kit ordered.

    Leave a comment:


  • myorgan
    commented on 's reply
    John,

    There is a photo of an HC-8 here: https://organforum.com/gallery/displ...um=36&pid=1238

    That is the speaker he has.

    Michael

  • jbird604
    commented on 's reply
    Ok, that clarifies it. This is a 125-RTC, which is the self-contained (speakers in console) MOS-2 model with DM capture action. Since it's MOS-2, it has many features that were optional in MOS-1 organs, such as "frequency separation" (the flute and main channel stops are slightly de-tuned to produce a rich ensemble effect), the card reader, and certain other enhancements that are not as obvious. A very nice model indeed!

    Since there are speakers in the console, that explains why the external cabinets are not HC-12s, as they would normally be for a larger MOS-2 model. Those may be called HC-8, if memory serves. Anyway, they are perfectly good for adding some tonal dimension to a self-contained organ, though not essential of course.

    Your idea of placing them across the room and using plentiful reverb should be very effective and make the organ sound much more interesting.

  • jbird604
    commented on 's reply
    AC-7967 would be the serial number. MOS organs don't have a "model" number as such. The metal plate will have a "System" number, such as "System 305" or "System 505-B" or something like that. Since your serial number begins with "AC" you must have one of the "American Contemporary" consoles -- also known as the "spaceship." That's the only Allen console I know of that can actually be dismantled into upper and lower parts, though it wasn't actually intended to ever be dismantled after it left the factory.

    There isn't a specific wiring diagram for any MOS organ, but if you have particular portions of the wiring you can't put back together properly, post about it here and I'll see if I can help you figure it out. Also, the service manual you would need to cover a MOS-2 model would be the original MOS manual (for the basics) plus the MOS-2 supplement. Allen charged dealers big bucks for these manuals, though they later issued smaller sets at low cost for specific models. Normally a complete manual isn't needed, and of course Allen doesn't offer these to the general public. Feel free to ask questions and I or someone else here can refer to a manual to help you.

  • myorgan
    commented on 's reply
    PghBear210,

    I saw the serial number plate in another one of your posts. The model number of your organ is 125-RTC. I believe you listed the finish number, which is painted, written, embossed, and posted all over the organ.

    Hope this helps.

    Michael

  • PghBear210
    commented on 's reply
    Michael,
    I have an AC-7967. Post to follow about Capture Memory.

  • PghBear210
    commented on 's reply
    Agreed.. The expense is a killer for decent sound. I plan on placing the externals up high directly facing me across the room with the reverb cranked. Nothing loud.. I just want rich sound in the small space.I'm going to voice the entire organ quiet as to not disturb the landlord below too much.

  • PghBear210
    commented on 's reply
    AC-7967 is the model. I've been rebuilding it since I had to disassemble the console to fit it up the stairwell to my apartment.
    Anyone have a manual??? If you like I can send a photo of the rack as well.. I think there's some wiring from the console going to the external rack that I'm missing as well... I don't believe it was given to me when the organ was delivered.

  • myorgan
    replied
    PghBear210,

    What model MOS-2 organ do you have? I know several here find Parts Express to be a good company, with which to do business.

    Michael

    Leave a comment:


  • John Vanderlee
    replied
    Great, let us know! It's money saving skill.

    Leave a comment:


  • PghBear210
    replied
    I found the re-foaming kit online.. Will order on payday and post an update when I complete the rebuilds. Thanks for the directions.

    Leave a comment:


  • John Vanderlee
    replied
    That could be done in a half hour. I hate tossing speakers!

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  • David Anderson
    replied
    I second the refoaming suggestion. All speakers with foam edges will eventually experience foam rot. It's a tedious task, but not that hard.

    Leave a comment:

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