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FS: NOS 5" Mid-bass Drivers, About 60 of them, buy a pair or the lot!

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  • FS: NOS 5" Mid-bass Drivers, About 60 of them, buy a pair or the lot!



    ALL SOLD

    Hello!

    I was planning to do something extraordinary with these drivers, but I am not going to get to it this year, or maybe next. They are well built. Cast frame. Poly cone, rubber surround. Shielded magnet. Long excursion.
    Good sensitivity for use as a line array of mids.

    Overall frame width = 6"
    Surround other diameter = 5"
    Effective Piston diameter = 4.375"

    New old stock. These were used by Acoustic Research (Model # D03-0001), but I don't know what model they belonged to. T/S parameters from DATS are shown below.

    Let your imagination run with these.

    $25 pr pair, shipped CONUS, I have 12 drivers left.







    Last edited by baco99; 11-10-2018, 07:25 AM.

  • #2
    They look a lot like some peerless drivers

    Comment


    • #3
      fs of 102.3 Hz seems pretty high. I assume you have not broken them in before measurement. Why don't you break in a pair and measure again?
      “I cried because I had no shoes until I met a man who had no feet”

      If we all did the things we are capable of doing, we would literally ASTOUND ourselves - Thomas A. Edison

      Some people collect stamps, Imelda Marcos collected shoes. I collect speakers.:D

      Comment


      • #4
        Originally posted by thekorvers View Post
        fs of 102.3 Hz seems pretty high. I assume you have not broken them in before measurement. Why don't you break in a pair and measure again?


        I haven't but I will try and post the results. I won't be able to break in all 60!

        Comment


        • #5
          Originally posted by badman View Post
          They look a lot like some peerless drivers

          Indeed - At this time in AR's history, they were owned by the same company that owned NHT. NHT used Peerless drivers for a long time. As service replacements, Recoton would often have drivers reverse engineered for models that Peerless stopped making. I have a few 8" drivers that were commissioned by Tonegan for this purpose.

          Comment


          • #6
            Originally posted by thekorvers View Post
            fs of 102.3 Hz seems pretty high. I assume you have not broken them in before measurement. Why don't you break in a pair and measure again?


            Also, I assume break in would only improve the Fs reading, so the design options could get better with break in.

            Comment


            • #7
              Originally posted by baco99 View Post



              I haven't but I will try and post the results. I won't be able to break in all 60!
              Indeed, that is why I said "break in a PAIR"!
              “I cried because I had no shoes until I met a man who had no feet”

              If we all did the things we are capable of doing, we would literally ASTOUND ourselves - Thomas A. Edison

              Some people collect stamps, Imelda Marcos collected shoes. I collect speakers.:D

              Comment


              • #8
                Originally posted by thekorvers View Post

                Indeed, that is why I said "break in a PAIR"!
                I jest.

                Comment


                • #9
                  410 grams added mass for the V(as) measurement seems a bit much for this size woofer. ??
                  My "No-Name" CC Speaker
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                  • #10
                    Originally posted by Kevin K. View Post
                    410 grams added mass for the V(as) measurement seems a bit much for this size woofer. ??
                    DATS keep throwing an error until I continued to add weight. I'll try with break-in with program and white noise, and then remeasure in a few days.


                    In the mean time, if ANYONE is interested in experimenting themselves, MAKE ME AN OFFER. You can do all the break-in and testing you want. Any reasonable offer considered for the lot.

                    Comment


                    • #11
                      Looks exactly like AR 308HO I had apart last night
                      I forgot to check the model number
                      I think that whole series has the same or similar mid, AR315HO,312,310
                      Then AR1,3, etc looks the same too

                      Comment


                      • #12
                        Originally posted by jimmy154 View Post
                        Looks exactly like AR 308HO I had apart last night
                        I forgot to check the model number
                        I think that whole series has the same or similar mid, AR315HO,312,310
                        Then AR1,3, etc looks the same too
                        Makes sense. Thanks

                        Comment


                        • #13
                          I moved these to a warmer room, had them playing at moderate volume all weekend, remeasured and the Fs is about the same. 104 to 106 Hz across 4 drivers. The midrange on these sounds very nice.

                          Make me an offer

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                          • #14
                            Based on the Fs, best application will be dedicated midranges or useful as satellites in a sub/sat surround setup. They won't dig deep enough to be used as midbasses without a sub.

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                            • #15
                              Originally posted by badman View Post
                              Based on the Fs, best application will be dedicated midranges or useful as satellites in a sub/sat surround setup. They won't dig deep enough to be used as midbasses without a sub.
                              Yes exactly

                              Sale pending for all.

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