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  • RS180S-8 MTM Towers

    I have finally started on my RS180S-8 & RS28F MTM towers. The crossover was designed by Jeff Bagby from this thread...

    http://techtalk.parts-express.com/sh...ighlight=rs180

    It was tweaked by Mike Price for the RS28F here...

    http://techtalk.parts-express.com/sh...ld-in-Oak-Pics

    Also, Paul K and diy speaker guy helped me out with properly sizing the port and stuffing correctly for a MLTL enclosure here...

    http://techtalk.parts-express.com/sh...n-Tower-Design

    Thanks for all the help guys!

    Here is the final design I settled on
    Click image for larger version

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    and here is where I'm at right now
    Click image for larger version

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    I should be able to make some more progress this weekend, but it is very hard with a newborn and an 18 month old right now!
    My RSS390HO 15" sub build

  • #2
    Re: RS180S-8 MTM Towers

    looks good and should be a killer speaker.
    " To me, the soundstage presentation is more about phase and distortion and less about size. However, when you talk about bass extension, there's no replacement for displacement". Tyger23. 4.2015

    Quote Originally Posted by hongrn. Oct 2014
    Do you realize that being an American is like winning the biggest jackpot ever??

    http://www.midwestaudioclub.com/spot...owell-simpson/
    http://s413.photobucket.com/albums/pp216/arlis/

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    • #3
      Re: RS180S-8 MTM Towers

      You are building the speaker I've thinking about for the last 3-4 months. Thanks for sharing your build. I'm subscribing and looking forward to seeing how your's work out.
      If life were fair, Elvis would still be alive today and all the impersonators would be dead.
      ~ Johnny Carson

      Bungelow Ed's Photo Album http://techtalk.parts-express.com/album.php?u=8594

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      • #4
        Re: RS180S-8 MTM Towers

        I will be watching this one closely. I have a future plan to do this exact build in a 9"/15"/44" MLTL cab with a 3" port centered 4" up (internally) and tuned to about 30Hz. Should be pretty close to what you are building.

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        • #5
          Re: RS180S-8 MTM Towers

          I purchased the drivers and crossover parts to build those towers from your old thread too. Which cabinet size did you decide on? that old thread had a few cabinet size choices. I'm looking forward to the progress on your build and learn from you.

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          • #6
            Re: RS180S-8 MTM Towers

            Click image for larger version

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            This is what I ended up with. It is the final configuration we discussed in that thread.
            My RSS390HO 15" sub build

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            • #7
              Re: RS180S-8 MTM Towers

              This is great!! I was in contact with Paul K about a single RS180 MLTL for a buddy of mine. It turns out that the build would not happen for a while and now I've stumbled across this thread. I happen to have four RS180s but not the tweets. This looks very very tempting though. Subscribed.
              Bryan K.

              Midwest Audio Club

              Speedster | Sub Attachť | The Wildeman | Sean's NLA Towers | CO‹GAR, COUGAR II and CO‹GAR JR | Triton | Lithium | J-Boom | Trym MLTL | Docere MLTL

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              • #8
                Re: RS180S-8 MTM Towers

                I have all the guts for mine, crossovers are built, but no time to start on the cabinets just yet. I will be watching this one and posting mine as it progresses.

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                • #9
                  Re: RS180S-8 MTM Towers

                  I made a little progress this weekend. Finished gluing up the boxes. Next up is cutting the baffles. My cuts were made with a straight edge and circular saw, so everything was off just a little, but a little sanding and bondo and you'll never know...hopefully!
                  Click image for larger version

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                  My RSS390HO 15" sub build

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                  • #10
                    Re: RS180S-8 MTM Towers

                    Bryan,

                    Are the Amiga or Core by Paul Carmody not suitable? Particularly since you don't have tweets. MLTL considerations would change the tuning some, but shouldn't really impact the design.

                    Larry

                    Originally posted by bkeane1259 View Post
                    This is great!! I was in contact with Paul K about a single RS180 MLTL for a buddy of mine. It turns out that the build would not happen for a while and now I've stumbled across this thread. I happen to have four RS180s but not the tweets. This looks very very tempting though. Subscribed.
                    I was so much older then, I'm younger than that now.
                    OS MTMs http://techtalk.parts-express.com/sh...d.php?t=220388
                    Swope TM http://techtalk.parts-express.com/sh...d.php?t=221818
                    Econowave and Audio Nirvana AN10 fullrange http://techtalk.parts-express.com/sh...d.php?t=216841
                    Imperial Russian Stouts http://techtalk.parts-express.com/sh...=1#post1840444
                    LECBOS. http://techtalk.parts-express.com/sh...ghlight=lecbos

                    Comment


                    • #11
                      Re: RS180S-8 MTM Towers

                      Originally posted by fastbike1 View Post
                      Are the Amiga or Core by Paul Carmody not suitable? Particularly since you don't have tweets. MLTL considerations would change the tuning some, but shouldn't really impact the design.
                      I have tweeters that I planned to use with the RS180 MLTL that Paul K modeled for me. Since then I acquired another pair of RS180s and then a few weeks later this thread popped up, so it got me thinking. As everyone knows, it's dangerous for me to think...and it hurts. :p
                      Bryan K.

                      Midwest Audio Club

                      Speedster | Sub Attachť | The Wildeman | Sean's NLA Towers | CO‹GAR, COUGAR II and CO‹GAR JR | Triton | Lithium | J-Boom | Trym MLTL | Docere MLTL

                      Comment


                      • #12
                        Re: RS180S-8 MTM Towers

                        Trust me, I'm totally on board with that. I have enough parts / builds on the plate for two lifetimes. ;)


                        Originally posted by bkeane1259 View Post
                        I have tweeters that I planned to use with the RS180 MLTL that Paul K modeled for me. Since then I acquired another pair of RS180s and then a few weeks later this thread popped up, so it got me thinking. As everyone knows, it's dangerous for me to think...and it hurts. :p
                        I was so much older then, I'm younger than that now.
                        OS MTMs http://techtalk.parts-express.com/sh...d.php?t=220388
                        Swope TM http://techtalk.parts-express.com/sh...d.php?t=221818
                        Econowave and Audio Nirvana AN10 fullrange http://techtalk.parts-express.com/sh...d.php?t=216841
                        Imperial Russian Stouts http://techtalk.parts-express.com/sh...=1#post1840444
                        LECBOS. http://techtalk.parts-express.com/sh...ghlight=lecbos

                        Comment


                        • #13
                          Re: RS180S-8 MTM Towers

                          This is really a nice set of speakers. I built mine about six months ago and really enjoy them!
                          Last edited by hthale; 02-28-2013, 09:57 PM.

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                          • #14
                            Re: RS180S-8 MTM Towers

                            These will be replacing some Polk monitor 60's so I'm hoping they will be quite an upgrade!
                            My RSS390HO 15" sub build

                            Comment


                            • #15
                              Re: RS180S-8 MTM Towers

                              Nice work! They'll be some solid cabinets. Do you have a finish decided yet? I really like the base, with the inset portion. I've had many Polk models here for listening sessions with various DIY designs. 2-ways to 2-ways, MTM's to MTM's, etc. Can't remember the model #, but a friend brought over his Polk MTM towers (IIRC, ones with the 5.25" woofers) and we did a TriTrix side-by-side. The imaging, soundfield and smoothness of the mids and highs was quite superior with the TriTrix MTM towers. I imagine with the RS drivers and that nice cabinet, you'll be experiencing some goose-bump moments that weren't present with the Polks. Can't wait to see the next round of photos!


                              John A.
                              "Children play with b-a-l-l-s and sticks, men race, and real men race motorcycles"-John Surtees
                              Emotiva UPA-2, USP-1, ERC-1 CD
                              Yamaha KX-390 HX-Pro
                              Pioneer TX-9500 II
                              Yamaha YP-211 w/Grado GF3E+
                              Statement Monitors
                              Vintage system: Yamaha CR-420, Technics SL-PG100, Pioneer CT-F8282, Akai X-1800, Morel(T)/Vifa(W) DIY 2-way in .5 ft3
                              Photos: http://custom.smugmug.com/Electronic...#4114714_cGTBx
                              Blogs: http://techtalk.parts-express.com/blog.php?u=2003

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