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  • Re: A Beovox MS150 Project

    I am working on cleaning up the other three bass drivers right now. Tomorrow I will pick up some different thicknesses of plastic (acetate I believe it is called) for the shim process. I will have to be extra careful on cutting the dust cap on the 8 inch drivers because there are two leads going underneath.
    Posted to The Workbench (Forum) by sonavor on Sun, Apr 8 2012
  • Re: A Beovox MS150 Project

    This picture shows preparing the 8 inch woofer for refoaming. You can see a lot of debris from the old foam surround and glue. It is important to get it all really clean prior to opening the dust cover (if you are going to shim). Otherwise, small pieces of debris can fall into the voice coil. I am planning on using shims for this project. It will be my first time using the shim method. So far I have been lucky in that my previous refoam projects (3 pairs of CX-100, 1 pair of CX-50, 1 pair of S55
    Posted to The Workbench (Forum) by sonavor on Sun, Apr 8 2012
  • Re: A Beovox MS150 Project

    Thanks. Starting with the 8 inch woofer on one of the MS150's. Here is a picture of the woofer removed. I should have included the mounting hardward in the picture but I'll show it later on the re-install. This picture shows the driver, the rubber gasket (re-usable) and the outer frame ring. The parts separated by carefully applying pressure...pulling on the driver chassis while pushing the outer frame ring. The rubber gasket held it snug but released fairly easy.
    Posted to The Workbench (Forum) by sonavor on Sun, Apr 8 2012
  • Re: A Beovox MS150 Project

    I see what you mean about the stands and the rubber stops. The M100 stands don't have a hole for the rubber stops like some of the other B&O stands. I'll have to mount a rubber block on the stand where the speaker will rest. Thanks for noting that.
    Posted to The Workbench (Forum) by sonavor on Mon, Apr 2 2012
  • Re: A Beovox MS150 Project

    Going over the scratched area with my hand, it isn't as deep as I originally thought. It is more of a scrape. I think the first thing is to try and carefully clean it up - just hitting the scraped area. Matching the black paint it would help conceal it somewhat. I haven't seen any S120 or M150 series speakers parted out so I don't like my odds for that option. If you come across one however, that would be a good option.
    Posted to The Workbench (Forum) by sonavor on Mon, Apr 2 2012
  • Re: A Beovox MS150 Project

    I decided to order the 8 inch and 10 inch surrounds from Good HiFi. The surrounds I have received from them in my last few speaker repairs have worked out well so I figure I should stick with what has worked for me. I'll post pictures when I get the surrounds. Now I need to start cleaning up the MS150s and checking the crossover components.
    Posted to The Workbench (Forum) by sonavor on Sat, Mar 31 2012
  • Re: A Beovox MS150 Project

    The big tube in the last picture? It is over the 8 inch (mid woofer) driver. It is filled with white sound dampening material. So the design was to kill the backside sound of the smaller woofer and port the 10 inch sub out the bottom of the speaker (through another tube.
    Posted to The Workbench (Forum) by sonavor on Sat, Mar 31 2012
  • Re: A Beovox MS150 Project

    Finally, for this round of pictures, here is the second speaker's sub woofer. The other pictures of the second speaker were pretty much the same as the first one. So I think something was loose on the first speaker and someone tried to fix it. I am still checking on which foam surrounds to go with. It seems like the two usual suppliers have good and less than good reviews.
    Posted to The Workbench (Forum) by sonavor on Sat, Mar 31 2012
  • Re: A Beovox MS150 Project

    This is a picture of the crossover from the other MS150. That speaker appears to have the original screws and the inside looks untouched. Note that the inductors on this crossover don't have any of the white silicone glue...just the original brownish glue.
    Posted to The Workbench (Forum) by sonavor on Sat, Mar 31 2012
  • Re: A Beovox MS150 Project

    Gotta wonder what happened here. The circular housing for the tweeter and mid drivers has a really nasty scratch. It indents into the plastic. Lucky whatever did that missed the drivers! I wonder if I should attempt to fix the scratches. Without a top grill the scratches will be visible. Not critical for the sound of the speakers of course but I want the end result to look as good as possible. Sanding the damage could make the problem look worse though.
    Posted to The Workbench (Forum) by sonavor on Sat, Mar 31 2012
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