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Jeff Bagby's RS180S MTM

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  • Jeff Bagby's RS180S MTM

    I have the cabinet plans so I have the dimension for that, in fact the cabinets are built. What I don't have is the speaker placement on the front baffle. I have a picture but I was wondering if anyone could give me the exact placement so I don't have to estimate. Thanks in advance.

  • #2
    This comment by the late and much missed Mr Bagby should assist:

    https://techtalk.parts-express.com/f...m-design/page5

    He mentions that his design was based on the now-deleted Dayton RS722 kit from Parts Express.

    Geoff

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    • #3
      Thanks that is where I got the cabinet dimensions but there is nothing about speaker position on the front baffle. Perhaps I should try Tech Support at PE but I thought someone had the kit or built the cabinets and knew the speaker placement. Thanks for the answer you got me thinking.

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      • #4
        https://www.manualsdir.com/manuals/2...ker-kit-w.html

        It doesn't show how far the tweeter is offset but it does show the woofer locations.

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        • #5
          I don't know if these are there official dimensions, since this was a tower adaptation, but see post #6

          https://techtalk.parts-express.com/f...s-8-mtm-towers

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          • #6
            I would just eyeball it from the picture on pg. 1 of the build thread. The tweeter is not quite all the way edge parallel to the woofers, they look about 1/4" away from the tweeter. I wouldn't not build them because of this.

            The Zaph BAMTM uses the same cab, 7" woofers and a similar size Seas tweeter.

            http://zaphaudio.com/BAMTM.html

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            • #7
              Thank you all. Feeling quite a bit better of cutting the front baffle.

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              • #8
                I wish I had the measurements because I have an extra set of baffles and I'm planning on having a MLTL cab built and using the extra baffles for a Solstice-like cab. It wasn't that bad with the first set though, just a matter of measuring, drawing circles, placing drivers, measuring again, etc.

                I'm curious what you're using for tweeters and I spent a bit of time looking at the RST28's to see how folks liked them. Not a drop in replacement though. I've been happy with my originals and I see that the replacement diaphragms are still available.and I'm planning on buying a couple.

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                • #9
                  Like many of us I had two pairs of the RS28A. One pair went to Jeff Bagby's Continuums and my last pair goes to his MTM. a4eaudio's post gave me the layout of the front baffle.

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                  • #10
                    In some weird sort of "saving money", I bought another set of ND90-8's to round me up to free shipping. I think I now have a life-time supply of RS28F-8 replacement diaphragms.

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                    • #11
                      I built these a few years back and remember talking to a bunch of folks about different aspects of them. The offset on mine is 3/4" from center, but why or who or how I decided on that idk.
                      The spacing between the tweeter and woofers at their edges is 1/4".
                      Last edited by edgecreek; 02-24-2022, 03:17 PM.

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