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  • rpb
    Seasoned Veteran
    • Jun 2006
    • 4657
    #31
    Here's a filter I made a while back for a mtm. The two woofers in parallel should be 4 ohms like your driver.

      Comment

      • rpb
        Seasoned Veteran
        • Jun 2006
        • 4657
        #32
        Here's a link with a little more information.

        Peerless 831735 + RS28 MTM - Techtalk Speaker Building, Audio, Video Discussion Forum
        http://techtalk.parts-express.com/forum/tech-talk-forum/46586-peerless-831735-rs28-mtm/page3
        Want a second or third opinion about your speaker cabinet design or other audio related problem? Post your question or comment on the Technical Discussion Board. Hundreds of technicians, engineers, and hobbyists, nationwide read and discuss electronics related questions each week. We welcome your participation

          Comment

          • adam215
            Been Around Awhile
            • Dec 2013
            • 88
            #33
            Originally posted by rpb
            Can you measure?
            I don't have any measuring equipment

              Comment

              • adam215
                Been Around Awhile
                • Dec 2013
                • 88
                #34
                Originally posted by rpb
                Here's a link with a little more information.

                http://techtalk.parts-express.com/fo...rs28-mtm/page3
                Thanks so much for posting this

                  Comment

                  • Navy Guy
                    Seasoned Veteran
                    • Feb 2013
                    • 2112
                    #35
                    Originally posted by adam215
                    ok thx
                    Oh, sorry! Just realized I linked to the wrong design! This is the one I meant: http://projectgallery.parts-express....o/texas-flood/ Same woofer but 8 ohms so adjust the part values as I said before.
                    -Kerry

                      Comment

                      • donradick
                        Seasoned Veteran
                        • Jun 2006
                        • 4132
                        #36
                        Adam -- here is my design for a RS180 MTM with a Vifa (Peerless) DX25 tweeter. Can play very loud and clean if desired, suitable for Mozart as well as Van Halen.
                        Ping me if you need anymore information. IIRC, I put this into a 1 ft^3 box.
                        Yet Another RS180 MTM - Techtalk Speaker Building, Audio, Video Discussion Forum
                        http://techtalk.parts-express.com
                        Want a second or third opinion about your speaker cabinet design or other audio related problem? Post your question or comment on the Technical Discussion Board. Hundreds of technicians, engineers, and hobbyists, nationwide read and discuss electronics related questions each week. We welcome your participation

                        I think I hear a difference - wow, it's amazing!" Ethan Winer: audio myths
                        "As God is my witness I'll never be without a good pair of speakers!" Scarlett O'Hara

                        High value, high quality RS150/TB28-537SH bookshelf - TARGAS NLA!
                        SB13/Vifa BC25SC06 MTM DCR Galeons-SB13-MTM
                        My Voxel min sub Yet-another-Voxel-build
                        Tangband W6-sub

                          Comment

                          • adam215
                            Been Around Awhile
                            • Dec 2013
                            • 88
                            #37
                            Originally posted by donradick
                            Adam -- here is my design for a RS180 MTM with a Vifa (Peerless) DX25 tweeter. Can play very loud and clean if desired, suitable for Mozart as well as Van Halen.
                            Ping me if you need anymore information. IIRC, I put this into a 1 ft^3 box.
                            Those llok really nice... I might just make these instead

                              Comment

                              • adam215
                                Been Around Awhile
                                • Dec 2013
                                • 88
                                #38
                                Actually, those are towers... Probably too tall for my needs

                                  Comment

                                  • adam215
                                    Been Around Awhile
                                    • Dec 2013
                                    • 88
                                    #39
                                    OK this is my most recent attempt...

                                    ​
                                    How do I smooth out the spike at around 1200 hz?

                                      Comment

                                      • adam215
                                        Been Around Awhile
                                        • Dec 2013
                                        • 88
                                        #40
                                        Here is the xo

                                        Click image for larger version Name: xo.png Views: 171 Size: 7.1 KB ID: 1418544Click image for larger version Name: phasse.png Views: 153 Size: 15.3 KB ID: 1418545Click image for larger version Name: imped.png Views: 156 Size: 24.7 KB ID: 1418546
                                        I don't really know how to read the other charts so I'm not sure if they are good or bad.

                                          Comment

                                          • donradick
                                            Seasoned Veteran
                                            • Jun 2006
                                            • 4132
                                            #41
                                            Originally posted by adam215
                                            Actually, those are towers... Probably too tall for my needs
                                            No, "WAYMAN" built a tower version.
                                            My large "Bookshelf" is about 22 inches high IIRC
                                            RS180MTM - DX25
                                            1 Photo

                                            I think I hear a difference - wow, it's amazing!" Ethan Winer: audio myths
                                            "As God is my witness I'll never be without a good pair of speakers!" Scarlett O'Hara

                                            High value, high quality RS150/TB28-537SH bookshelf - TARGAS NLA!
                                            SB13/Vifa BC25SC06 MTM DCR Galeons-SB13-MTM
                                            My Voxel min sub Yet-another-Voxel-build
                                            Tangband W6-sub

                                              Comment

                                              • Navy Guy
                                                Seasoned Veteran
                                                • Feb 2013
                                                • 2112
                                                #42
                                                Originally posted by adam215
                                                OK this is my most recent attempt...

                                                ​
                                                How do I smooth out the spike at around 1200 hz?
                                                Picture isn't showing. Getting a broken link
                                                -Kerry

                                                  Comment

                                                  • adam215
                                                    Been Around Awhile
                                                    • Dec 2013
                                                    • 88
                                                    #43
                                                    Originally posted by Navy Guy

                                                    Picture isn't showing. Getting a broken link
                                                    Click image for larger version Name: SPL 2.png Views: 97 Size: 25.7 KB ID: 1418571

                                                      Comment

                                                      • adam215
                                                        Been Around Awhile
                                                        • Dec 2013
                                                        • 88
                                                        #44
                                                        Originally posted by donradick

                                                        No, "WAYMAN" built a tower version.
                                                        My large "Bookshelf" is about 22 inches high IIRC
                                                        Is it sealed or ported?

                                                          Comment

                                                          • adam215
                                                            Been Around Awhile
                                                            • Dec 2013
                                                            • 88
                                                            #45
                                                            Originally posted by adam215

                                                            Is it sealed or ported?
                                                            sorry... vented?

                                                              Comment

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