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  • Usher 8945P design

    I am considering doing a Usher 8945P design and was gonna see if I could get some input from the pro's here. I wanna keep it a simple 2 way WTW design. I have the fountek neo3.0 tweeters which I really like sound of but dont know if I'll be able to get the ushers up to at least 3khz. If you guys don't think that will work could you recommend another ribbon or a similar sounding tweeter that could go down lower.
    Also I was gonna see if I could get some feedback from people on here that have heard these usher drivers to see if they are worth the money.

    Thanks
    Mike

  • #2
    Re: Usher 8945P design

    http://www.oocities.org/woove99/Spkr.../Usher_MTM.htm

    (same tweeter, new name)

    http://meniscusaudio.com/scan-discov...130-p-415.html
    http://jaysspeakerpage.weebly.com/

    Comment


    • #3
      Re: Usher 8945P design

      PM Paul K and I'm sure he'd share the plans with you. Bit different tweeter too.

      R = h/(2*pi*m*c) and don't you forget it! || Periodic Table as redrawn by Marshall Freerks and Ignatius Schumacher || King Crimson Radio
      Byzantium Project & Build Thread || MiniByzy Build Thread || 3 x Peerless 850439 HDS 3-way || 8" 2-way - RS28A/B&C8BG51

      95% of Climate Models Agree: The Observations Must be Wrong
      "Gravitational systems are the ashes of prior electrical systems.". - Hannes Alfven, Nobel Laureate, Plasma physicist.

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      • #4
        Re: Usher 8945P design

        I really like the look of that design. I wonder what tweeter he used in that setup?

        Comment


        • #5
          Re: Usher 8945P design

          Originally posted by Mike82 View Post
          I really like the look of that design. I wonder what tweeter he used in that setup?
          Bohlender Graebner Neo3PDR I do believe.

          Here's a link to the writeup.

          https://www.box.com/shared/39uey2h19l
          R = h/(2*pi*m*c) and don't you forget it! || Periodic Table as redrawn by Marshall Freerks and Ignatius Schumacher || King Crimson Radio
          Byzantium Project & Build Thread || MiniByzy Build Thread || 3 x Peerless 850439 HDS 3-way || 8" 2-way - RS28A/B&C8BG51

          95% of Climate Models Agree: The Observations Must be Wrong
          "Gravitational systems are the ashes of prior electrical systems.". - Hannes Alfven, Nobel Laureate, Plasma physicist.

          Comment


          • #6
            Re: Usher 8945P design

            Mike, I tried to reply to your private message but your PE mailboxes are full. Anyway, you already found out in this thread that the tweeter I used in the MTM with the 8945Ps is a BG Neo3PDR crossed at 2.3 kHz (Dan Neubecker did the crossover design). Just wondering, though, why you think the Fountek Neo3.0 can't be crossed lower than 3 kHz? I don't personally know its limits, just wondering.
            Paul

            Originally posted by Mike82 View Post
            I really like the look of that design. I wonder what tweeter he used in that setup?

            Comment


            • #7
              Re: Usher 8945P design

              Hey Paul I emptied my inbox, sorry about that. I guess fountek recommends the crossover point at 2500. Here is the link to the fountek tweeters maybe you could take a look and see. I guess I was under the assumption that ribbons don't sound very good that low correct me if I'm wrong.
              http://www.fountek.net/products.asp?id=44

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              • #8
                Re: Usher 8945P design

                fyi
                http://techtalk.parts-express.com/sh...H-Horn-Tweeter
                http://www.diy-ny.com/

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                • #9
                  Re: Usher 8945P design

                  By look of those measurements I would say the fountek neo 3.0 should have no problem going down to 2.5k. Im wonder if anybody on here has run them that low and could give there opinion on how they thought they sounded.

                  Comment


                  • #10
                    Re: Usher 8945P design

                    you want to have no output at 2k at all. So, dependents on the crossover. 4th order electrical at 2800hz may squeeze by but I'd push it closer to 3200hz. Some drivers will ease in to the problem areas of the passband gracefully, some are either great or "run out of the room". 3.0 is one of these super clean or horrible.
                    Linear and nonlinear response of 8945P will be fine up there but power response will suffer. Not an easy solution but not impossible. Neo3PDR, while also not an ideal driver to cross low, is capable of working 2 to 3khz area more comfortably.
                    http://www.diy-ny.com/

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                    • #11
                      Re: Usher 8945P design

                      Do you think its worth trying to acheive or would I be better off going with the Neo3PDR or even the Peerless 810921 HDS. Ive never owned or heard a higher end dome tweeter before so my comparison of domes to ribbons are the SEAS Prestige 27TDC and my fountek neo3.0 ribbon. What i love about the fountek are the symbals and even the higher notes off the guitar are so clean and defined. I guess my question is can higher end dome tweeters acheive that or even the planar tweeter. If it can i would definatly give them a try.

                      Comment


                      • #12
                        Re: Usher 8945P design

                        I've built the statement series of speakers and you might know it uses the Fountek Neo CD 3.0 tweeter. Currently I have a couple of bookshelf speakers one with the Usher 8948A and B&G Neo 3 and another with the Usher 8945P and Scanspeak HDS.

                        Out of all of these designs I prefer the Usher/Scanspeak design. They were all great, but I preferred the HDS tweeter. Both of the Usher drivers were equally as good.

                        I have some experience with the Seas 27TDFC as well. another great tweeter, but if you are willing to spend the money on the ribbon I would suggest going with the HDS instead.

                        Just my opinion, but at lleast for me it was difficult to listen to the ribbon over extended periods of time. The Neo planar is very easy to listen to and has a very airy sound something different than most domes I have heard. If you enjoy the crispness of the ribbon I would suggest the HDS. To me it has the detail of a ribbon, but much easier to listen to for extended periods. The HDS/Usher combo is very clean and reveals a whole lot of detail and I can listen to it for a very long time without any issue. I can't really imagine it getting much better even if you spend some major bucks.

                        I'm now working with someone to make a 3-way using the Scanspeak HDS, Usher 8948A and two 8955A drivers. The 8" drivers are now unfortunately NLA.

                        Comment


                        • #13
                          Re: Usher 8945P design

                          Originally posted by Mike82 View Post
                          Do you think its worth trying to acheive or would I be better off going with the Neo3PDR or even the Peerless 810921 HDS. Ive never owned or heard a higher end dome tweeter before so my comparison of domes to ribbons are the SEAS Prestige 27TDC and my fountek neo3.0 ribbon. What i love about the fountek are the symbals and even the higher notes off the guitar are so clean and defined. I guess my question is can higher end dome tweeters acheive that or even the planar tweeter. If it can i would definatly give them a try.
                          You'll need measurement gear to design and verify crossover for Fountek/Usher combination. Other tweeters are fine and will work as well but it becomes all about subtleties in the presentation. Look in Hiquphon OW4. Subjective sound character is close to the ribbon then a larger domes. It's a nice wide passband, low distortion tweeter. I've used it with 8945A in a Thor alike.
                          http://techtalk.parts-express.com/al...chmentid=24740

                          also, Usher drivers need to be checked. If they up to specs, they are round about as good as SS Revelators.
                          http://www.diy-ny.com/

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                          • #14
                            Re: Usher 8945P design

                            I didn't realize usher drivers are not consistent. That's to bad I just sold my wt3 tester. I'm actually trying to simplify my sound system. So I just got done selling most of my measuring equitment and my active crossovers. So have a lot of people been getting quite a bit of variation in these drivers?

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                            • #15
                              Re: Usher 8945P design

                              I haven't experienced any QC issues with the Usher drivers so far, but I imagine some might make it through. I'll try to measure all of mine before using them.

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