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  • Originally posted by jhollander View Post


    Based on post #136 I assumed you weren't looking for anything else. I'll give it go...
    i meant files ... y'all want measurements of drivers on baffle ? woofer center is 13" up , tweet is 28" and top mid is 32" ...
    Paper Towers
    RS180P/28F surrounds
    Boombox

    Comment


    • What are you doing for a mid enclosure?
      John H

      Synergy Horn, SLS-85, BMR-3L, Mini-TL, BR-2, Titan OB, B452, Udique, Vultus, Latus1, Seriatim, Aperivox,Pencil Tower

      Comment


      • 1/2" ply . 5w x 13l x 4d external .
        Paper Towers
        RS180P/28F surrounds
        Boombox

        Comment


        • Originally posted by filmslayer View Post


          UMM-6 and Holm ... yes

          did you forget you taught me to measure building my towers ?
          Show the on axis gated measurement of the x-over you are listening to. That will take out any room reflections. It's also what I'm accustomed to looking at on my speakers. In HOLM, the measurement can be changed by clicking a button in the options drop down . No need to remeasure.

          Comment


          • let me know where ya want the gate ... Click image for larger version

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            Paper Towers
            RS180P/28F surrounds
            Boombox

            Comment


            • Looks like you need to set the gate at about 300hz. Also, maybe you could crop the graph to show 100hz to 20k, and 10dB to minus 40dB. You can also stretch the height of the frequency response window. It makes the impulse window shorter, but together these will make the response easier to see while you are using HOLM.

              Comment


              • Click image for larger version

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                like so ?
                Paper Towers
                RS180P/28F surrounds
                Boombox

                Comment


                • Originally posted by filmslayer View Post
                  [ATTACH=CONFIG]n1364784[/ATTACH]

                  like so ?
                  That's just right. It looks to me like there may be a little excess energy in the 1k to 2k range. Some of that might be coming from the woofer. Or it could be the mid filtering. I'd be tempted to add another 10 or 20uf cap to the woofer filter shunt, and remeasure, or just listen, and see how you like the change. You can sim the change to help you decide how to proceed. Maybe pad the mid another dB. You may prefer it as it is now. It's really a voicing choice.

                  Comment


                  • according to my sim changing the cap doesn't do it . upping the mid padding does more smoothing .
                    Paper Towers
                    RS180P/28F surrounds
                    Boombox

                    Comment


                    • Originally posted by filmslayer View Post
                      according to my sim changing the cap doesn't do it . upping the mid padding does more smoothing .
                      You might need to pad the tweeter a little more too, but I'd probably do one at the time. I use jumpers, so that changes are easy.

                      Comment


                      • Here's my sim. I used PCD to create overlays to determine the XSim offsets. I can post what I did create the FRDs if there's interest.
                        John H

                        Synergy Horn, SLS-85, BMR-3L, Mini-TL, BR-2, Titan OB, B452, Udique, Vultus, Latus1, Seriatim, Aperivox,Pencil Tower

                        Comment


                        • at least we all seem to be in agreement on the woofer circuit ... other than that the only part i got that matches your sim John is a 10uF .... lol ... i will need to order some parts for that .

                          and post away ... any discussion on how something achieved is useful to some one ....
                          Paper Towers
                          RS180P/28F surrounds
                          Boombox

                          Comment


                          • John H

                            Synergy Horn, SLS-85, BMR-3L, Mini-TL, BR-2, Titan OB, B452, Udique, Vultus, Latus1, Seriatim, Aperivox,Pencil Tower

                            Comment


                            • i have some values that are close . .8 mH for 1 , .5 instead of .4 . i can stack 24.7 for 24 ... the two 4uF's i have 4.7 or 3.3 but i could stack 3.3 and 1 for 4.3 . the 12 and 7.5 ohm resistors would be the biggest hang up , i don't mind ordering resistors , i use cheap 10w's ...

                              i find it interesting how you generate your files . i don't have nor do i know how to use Exel .
                              Paper Towers
                              RS180P/28F surrounds
                              Boombox

                              Comment


                              • Originally posted by filmslayer View Post
                                according to my sim changing the cap doesn't do it . upping the mid padding does more smoothing .
                                Are you using the Dayton frd files, or the ones I modified for the baffle? I would suggest trying my files, and don't artificially decrease the RS225 level in any way. Just use your filter.

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