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Are these woofers for real?

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  • Are these woofers for real?

    So I was looking at quarter wave.com and happened to follow a link at the bottom for GR research, and found these... I am willing to bet they aren't as good as the graph shows, but if I'm wrong and they are, these might be a steal at $30 each! What do you guys think?

    http://gr-research.com/m130woofer-1-1.aspx
    HAGD,
    Marc

    Even though I try to tell everyone upfront, understand that I am still a Newb. I wish the status of Seasoned Veteran/Senior Member, etc. was earned with time not posts...

    TMWW thread

    Maurbacs DCR Tower

  • #2
    Re: Are these woofers for real?

    GR research is pretty honest outfit. What you may want to look at is distortions of these woofers. Frame is plastic BTW or looks like it. It was used by many different manufacturers, including Jordan.
    http://www.diy-ny.com/

    Comment


    • #3
      Re: Are these woofers for real?

      Thanks roman, it was either one of your threads, or charlie's that I found the link to Martin's white paper and quarter wave.com

      So basically you think there may be distortion in these, and that is the reason for the lowish price tag?
      HAGD,
      Marc

      Even though I try to tell everyone upfront, understand that I am still a Newb. I wish the status of Seasoned Veteran/Senior Member, etc. was earned with time not posts...

      TMWW thread

      Maurbacs DCR Tower

      Comment


      • #4
        Re: Are these woofers for real?

        The 165X was tested by Zaph a while back. Smooth response, high xmax, less bsc needed, completely mediocre distortion performance.

        http://www.zaphaudio.com/6.5test/compare.html

        That 165-16 version of the driver looks like it looses the bsc advantage, and of course has poor xmax performance.
        http://jaysspeakerpage.weebly.com/

        Comment


        • #5
          Re: Are these woofers for real?

          See this is why I ask these things!!! LOL. I'm still a squirrel looking for last years nuts... Wait did that sound wrong? :rolleyes:
          HAGD,
          Marc

          Even though I try to tell everyone upfront, understand that I am still a Newb. I wish the status of Seasoned Veteran/Senior Member, etc. was earned with time not posts...

          TMWW thread

          Maurbacs DCR Tower

          Comment


          • #6
            Re: Are these woofers for real?

            Originally posted by Jay1 View Post
            The 165X was tested by Zaph a while back.
            The 165X also has a completely different motor, so don't expect anything similar in the distortion department. I don't recall the details, but there was some sort of dust up about some distortion measurements that someone* posted that DR did not care for.

            Also, if anyone else calls the "polymer" frame "plastic," DR may whack his or her pp. :D

            The GR products are generally regarded as a reasonable value for the money, but I get a little concerned when a distributor/ marketer of products jumps down the the throat of anybody who says anything less than stellar about the products. It just tastes bad to me.

            Zach

            *you can figure out who someone is if you try real hard.

            Comment


            • #7
              Re: Are these woofers for real?

              Well, I hate to mix the opinions with real world experience, but . . .

              This may be a case where measurements don't necessarily impact performance. I had the AV123 X-SLS (M165 woofs) speakers as mains in my HT for several years. Can't say as I ever finished a movie and said, "I can really hear that mediocre distortion performance." I wasn't particularly uphappy with them, they jusr couldn't compete with the Imperial Russian Stouts.

              Then again, there are a lot of $30 woofers to choose.
              I was so much older then, I'm younger than that now.
              OS MTMs http://techtalk.parts-express.com/sh...d.php?t=220388
              Swope TM http://techtalk.parts-express.com/sh...d.php?t=221818
              Econowave and Audio Nirvana AN10 fullrange http://techtalk.parts-express.com/sh...d.php?t=216841
              Imperial Russian Stouts http://techtalk.parts-express.com/sh...=1#post1840444
              LECBOS. http://techtalk.parts-express.com/sh...ghlight=lecbos

              Comment


              • #8
                Re: Are these woofers for real?

                Originally posted by fastbike1 View Post
                Well, I hate to mix the opinions with real world experience, but . . .
                I think you should.

                We should always make our own decisions about value using the tools we have at hand. In general though, there is an audible difference when there is a measurable difference. I'm not touching the reverse, cause we all know where that leads. :D

                I'm not bagging on GR's products, far from it. But, as you said, "...there are a lot of $30 woofers to choose."

                I have plenty of speakers with non-"state of the art" drivers that I enjoy very much. Listening to some now, even.

                Zach

                NP: Foghat, Foghat (1972)

                Comment


                • #9
                  Re: Are these woofers for real?

                  By no means does mediocre distortion performance mean an enjoyable speaker can not be designed from the driver in question, it has many other positive attributes.

                  The drivers in the imperial Russian stouts have very good distortion performance, so your real world experience isnt exactly going against what's being stated. ..

                  Originally posted by fastbike1 View Post
                  Well, I hate to mix the opinions with real world experience, but . . .

                  This may be a case where measurements don't necessarily impact performance. I had the AV123 X-SLS (M165 woofs) speakers as mains in my HT for several years. Can't say as I ever finished a movie and said, "I can really hear that mediocre distortion performance." I wasn't particularly uphappy with them, they jusr couldn't compete with the Imperial Russian Stouts.

                  Then again, there are a lot of $30 woofers to choose.
                  http://jaysspeakerpage.weebly.com/

                  Comment


                  • #10
                    Re: Are these woofers for real?

                    Cue arrival of Danny in 3....2....1....

                    ;)

                    Comment


                    • #11
                      Re: Are these woofers for real?

                      It's a $30 woofer, and performs like one. It's easy to work with and does a decent job, especially if used in multiples.

                      I've heard a few implementations, and they're certainly worth the money you pay.

                      What do you expect for that price? A Scanspeak?
                      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


                      • #12
                        Re: Are these woofers for real?

                        Jay, surely you understood that the real world experience I mentioned was about the M165. I only mentioned the IRS lest someone come with "if you liked them so much, why . . "


                        Originally posted by Jay1 View Post
                        By no means does mediocre distortion performance mean an enjoyable speaker can not be designed from the driver in question, it has many other positive attributes.

                        The drivers in the imperial Russian stouts have very good distortion performance, so your real world experience isnt exactly going against what's being stated. ..
                        I was so much older then, I'm younger than that now.
                        OS MTMs http://techtalk.parts-express.com/sh...d.php?t=220388
                        Swope TM http://techtalk.parts-express.com/sh...d.php?t=221818
                        Econowave and Audio Nirvana AN10 fullrange http://techtalk.parts-express.com/sh...d.php?t=216841
                        Imperial Russian Stouts http://techtalk.parts-express.com/sh...=1#post1840444
                        LECBOS. http://techtalk.parts-express.com/sh...ghlight=lecbos

                        Comment


                        • #13
                          Re: Are these woofers for real?

                          Is the stated M130 3.3 Xmax total or each way (+/-)? The reason I ask is another GR driver, the M165X, specifically states "each way" whereas the M130 doesn't.

                          Thanks....
                          "Everything is nothing without a high sound quality." (Sure Electronics)

                          Comment


                          • #14
                            Re: Are these woofers for real?

                            Right, but do you not see the connection you made between a speaker with the 165 woofers and a speaker using measurably better woofers?

                            Originally posted by fastbike1 View Post
                            Jay, surely you understood that the real world experience I mentioned was about the M165. I only mentioned the IRS lest someone come with "if you liked them so much, why . . "
                            http://jaysspeakerpage.weebly.com/

                            Comment


                            • #15
                              Re: Are these woofers for real?

                              The GR Research is a $30, 6 1/2" woofer that is generally well-behaved. Realistically, there aren't a lot of better options unless you get into the $40-$50 price range (where you have things like the Fountek FW168, HiVi F6, HiVi M6, Dayton RS180) . At $30 or less, you have the Peerless SDS, Visaton treated paper models, and Dayton DA-175 that might have some advantages or disadvantages depending on your application, but aren't clearly head-and-shoulders better.
                              Keep an open mind, but don't let your brain fall out.

                              Sehlin Sound Solutions

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