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RS150P-8 measurements

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  • RS150P-8 measurements

    This thread will document the measurements I take on the new RS150P-8 drivers I just received. My project plan is to pair them with some RS28A tweeters I bought a few weeks ago when they were the deal of the day (<$50). Initial visual impression is that they are very well made.
    Last edited by PWR RYD; 12-26-2013, 10:33 PM.
    Craig

  • #2
    Re: RS150P-8 measurements

    Last edited by PWR RYD; 12-26-2013, 10:35 PM.
    Craig

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    • #3
      Re: RS150P-8 measurements

      Here are the measured T/S parameters right out of the boxes using an added mass of 20.5 g:

      Driver A:
      Re 6.201 ohms
      Fs 57.2 Hz
      Qms 2.246
      Qes 0.4713
      Le 0.6469 mH
      Mms 6.215 g
      Vas 0.406 Ft^3 (11.49 L)

      Driver B:
      Re 6.22 ohms
      Fs 56.52 Hz
      Qms 2.208
      Qes 0.4664
      Le 0.654 mH
      Mms 6.413 g
      Vas 0.4031 Ft^3 (11.41 L)

      This is right out of the boxes. No flexing of the suspension by hand or anything. Pretty darn good!
      Last edited by PWR RYD; 12-26-2013, 10:36 PM.
      Craig

      Comment


      • #4
        Re: RS150P-8 measurements

        T/S parameters after driver break in. I just run a 60 Hz sine wave to them at about 2 Watts which drives them close to x-max. They hum nicely but never sound like they are in distress (distortion from over excusion). I let them run for 30 minutes then cool down for an hour. Here are the individual drivers:

        Driver A:
        Re 6.161 ohms
        Fs 56.52 Hz
        Qms 2.184
        Qes 0.4598
        Le 0.6369 mH
        Mms 6.382 g
        Vas 0.405 Ft^3 (11.46 L)

        Driver B:
        Re 6.192 ohms
        Fs 55.18 Hz
        Qms 2.121
        Qes 0.45
        Le 0.6398 mH
        Mms 6.372 g
        Vas 0.4156 Ft^3 (11.76 L)
        Last edited by PWR RYD; 12-27-2013, 01:14 PM.
        Craig

        Comment


        • #5
          Re: RS150P-8 measurements

          I'm hoping to get the kids to bed early tonight so I can start getting some frequency response measuresments. I was able to fab up the infinite baffle insert after I finished tiling our upstairs bath/shower walls (have to take advantage of the warmer weather today/tomorrow to clean out thin-set/grout buckets and tools outside). Anyway, here are a few quick shots of the insert and driver A mounted. Only takes a few minutes to set up my IB and OmniMic:







          Last edited by PWR RYD; 12-27-2013, 07:07 PM.
          Craig

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          • #6
            Re: RS150P-8 measurements

            Driver A: On axis frequency response:



            Driver A: Frequency response at zero, 15, 30, and 45 degrees:

            Last edited by PWR RYD; 12-28-2013, 12:46 PM.
            Craig

            Comment


            • #7
              Re: RS150P-8 measurements

              Driver A distortion:

              Last edited by PWR RYD; 12-28-2013, 12:47 PM.
              Craig

              Comment


              • #8
                Re: RS150P-8 measurements

                Reserved for in box measurements, polars, etc.
                Craig

                Comment


                • #9
                  Re: RS150P-8 measurements

                  Reserved for me thanking you for doing this and posting the results in addition to commenting on them if there's anything to comment on.

                  When you stop caring about being right, you might actually learn something.

                  My test data site:
                  http://medleysmusings.com/

                  Comment


                  • #10
                    Re: RS150P-8 measurements

                    Awesome information, these are looking very nice, thanks for being the pioneer!
                    Last edited by pknaz; 12-29-2013, 07:56 AM.

                    Comment


                    • #11
                      Re: RS150P-8 measurements

                      Reserved for thanking you for your effort.
                      Last edited by [email protected]; 12-26-2013, 10:55 PM.
                      " 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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                      • #12
                        Re: RS150P-8 measurements

                        Looking forward to it!
                        Don't listen to me - I have not sold any $150,000 speakers.

                        Comment


                        • #13
                          Re: RS150P-8 measurements

                          Can't wait!

                          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

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                          • #14
                            Re: RS150P-8 measurements

                            The suspense is killing me man, seriously.
                            Audio: Media PC -> Sabre ESS 9023 DAC -> Behringer EP2500 -> (insert speakers of the moment)
                            Sites: Jupiter Audioworks - Flicker Stream - Proud Member of Midwest Audio Club

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                            • #15
                              Re: RS150P-8 measurements

                              Watching the "duck dynasty" chia pet grow while waiting. :rolleyes:
                              Kenny

                              http://www.diy-ny.com/
                              DIY NY/NJ 2014 https://www.youtube.com/watch?v=FGwA...ature=youtu.be
                              Man does not live by measurements alone, a little music helps.

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