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8" woofer suggestion for an excellent british style classic 2-way speaker

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  • #31
    Re: 8" woofer suggestion for an excellent british style classic 2-way speaker

    Originally posted by Paul K. View Post
    While my RS duets do have ports, they are not just ported speakers.:( They're mass-loaded TLs and use the natural 1/4-wave resonant frequency of the cabinet's internal height for part of the system tuning. Thanks for mentioning them.:D
    Paul
    I might suggest those to my friend to build.

    Comment


    • #32
      Re: 8" woofer suggestion for an excellent british style classic 2-way speaker

      Seas W22 is another good option if you can cross at 1,5kHz or lower. Not a "classic" design but probably a good one!
      "It is only Scrooge McDuck and others with a personality disorder who have money as their goal"

      Comment


      • #33
        Re: 8" woofer suggestion for an excellent british style classic 2-way speaker

        Originally posted by jonasz View Post
        Seas W22 is another good option if you can cross at 1,5kHz or lower. Not a "classic" design but probably a good one!
        I have measurements of it on an old machine, I need to find them. IIRC, the rise in FR is exaggerated in SEAS's image. http://www.seas.no/index.php?option=...d=72&Itemid=96
        "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche

        http://www.diy-ny.com/

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        • #34
          Re: 8" woofer suggestion for an excellent british style classic 2-way speaker

          Thanks to everyone who has gave suggestions.

          I have tried the 10" Seas mentioned here (A26RE4) in a two way with the Seas 29TFF/W in an aperiodic enclosure design (too) by Hi-fi World. I like that driver quite well and the design too. I have the feeling that they work better in a large rooms.

          Independently of the above, Harberths, old Spendors and Snell speakers have always intrigued me.

          Harberth is using their radial drivers. Vifa used to produce the C20 which would fit the bill perfectly, perhaps the closest one now is the Seas CA22RNY, but even that is difficult to get (in the US).

          Lets see what other options are suggested.

          Focal would be interesting, specially the aerogels, which are used in the KLS9. Tht design comes from where my aperiodic design with the A26RE4 comes from.

          I know the JA8008 might be good, but I find it overpriced. I wonder how far would a CA22RNY with foam surround go in this direction, albeit less sensitivity but higher XMAX.

          Does anybody know what is the minimum order for a Seas or Scanspeak group buy?

          For those that asked what tweeter I will be using, it could be the large audax TW034, the trasducer labs d26 ot the rs28a/f as first candidates (not in particular order). A waveguide would probably work well here


          S.

          Comment


          • #35
            Re: 8" woofer suggestion for an excellent british style classic 2-way speaker

            I don't know if it's worth it to you, but this is most certainly a classic sounding 8" driver, it used to be Vifa and is now made by Scanspeak:

            http://www.madisoundspeakerstore.com...fer-poly-cone/

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            • #36
              Re: 8" woofer suggestion for an excellent british style classic 2-way speaker

              Interesting thread since I've been interested in cloning speakers for years.
              Reverse engineered the Vandersteen 2Ci which uses a Vifa poly cone driver that
              is very similar to the old Vifa P21WO20 now sold under the Scan line as mentioned
              in the previous post:
              http://www.madisoundspeakerstore.com...fer-poly-cone/
              I also experimented with a paper cone SEAS that I liked very
              much. I would not attempt a Vandersteen clone since it is too complex being a 3-way
              and even used an active "Acoustic Coupler".
              The way to get deep extended bass is to tune low in the low 30s and use a large
              box roughly 2 cu ft.

              I was recently given a pair of Snell Es (I think the II version) in rough shape with blown
              woofers that from memory are SEAS 8":
              http://www.stereophile.com/floorloudspeakers/1091snell/
              The tweeters are custom Tonegen I believe and there is an odd looking .75" rear firing.
              I'd be willing to provide some details if you're interested but I can't take measurements
              since both woofers are blown. I believe that the Scan/Vifa P21WO20 would be a
              decent substitute but I tend to prefer SEAS.

              Comment


              • #37
                Re: 8" woofer suggestion for an excellent british style classic 2-way speaker

                How about attempting to "clone" this $12,000 10" 2-way, half joking here, the
                DeVore Fidelity Orangutan O/96:
                http://www.stereophile.com/content/d...96-loudspeaker

                Actually, something like the Dynaco A-25XL in a much larger normally vented box
                such as the size of the Snell Type E would make a lot of sense - tuned around 28-32 Hz.
                The O/96 is tuned too high in my opinion.

                Comment


                • #38
                  Re: 8" woofer suggestion for an excellent british style classic 2-way speaker

                  Just noticed this rather old style driver but with much more Xmax. Madisound's
                  measured response looks reasonably good; I wonder how much smoothing was used:
                  http://www.madisoundspeakerstore.com...-woofer-8-ohm/

                  This now says made by Misco, anyone one know if it was previously made by Eminence?
                  I have the 8" version and thought it had an Eminence number on it.

                  Comment


                  • #39
                    Re: 8" woofer suggestion for an excellent british style classic 2-way speaker

                    Jordan JX-150
                    http://www.diy-ny.com/

                    Comment


                    • #40
                      Re: 8" woofer suggestion for an excellent british style classic 2-way speaker

                      Madisound claims that this SEAS 10" is a replacement for the Dynaco A25, probably
                      the XL version:
                      http://www.madisoundspeakerstore.com...10-paper-cone/

                      Comment


                      • #41
                        Re: 8" woofer suggestion for an excellent british style classic 2-way speaker

                        Originally posted by Pete Basel View Post
                        How about attempting to "clone" this $12,000 10" 2-way, half joking here, the
                        DeVore Fidelity Orangutan O/96:
                        http://www.stereophile.com/content/d...96-loudspeaker

                        Actually, something like the Dynaco A-25XL in a much larger normally vented box
                        such as the size of the Snell Type E would make a lot of sense - tuned around 28-32 Hz.
                        The O/96 is tuned too high in my opinion.
                        Almost looks like that Seas A26 with a Morel CAT 378... Really like the part about the box, " the side and rear walls were very lively between 130 and 230Hz, and some lower-level modes were audible higher in frequency. Investigating the cabinet's vibrational behavior with a simple plastic-tape accelerometer revealed very strong modes at 148 and 219Hz"

                        $12K goes a long way these days...

                        Back on track. Curious how low that Morel tweeter could be crossed? Might make a good candidate for an 8" 2 way.
                        http://jaysspeakerpage.weebly.com/

                        Comment


                        • #42
                          Re: 8" woofer suggestion for an excellent british style classic 2-way speaker

                          Originally posted by speedle View Post
                          I don't know if it's worth it to you, but this is most certainly a classic sounding 8" driver, it used to be Vifa and is now made by Scanspeak:

                          http://www.madisoundspeakerstore.com...fer-poly-cone/
                          I have a pair of these woofers, think I will try a simple two way.

                          Comment


                          • #43
                            Re: 8" woofer suggestion for an excellent british style classic 2-way speaker

                            Originally posted by johnnyrichards View Post
                            The Airborne uses the same cone sans dust cap as the MCM. It has similar Ts parameters as well (very low Q for example). On the MCM I measured, there is a very tiny wrinkle at 800 or so in the impedance curve, so it might be inherent to the cone material, I don't know.

                            The Airborne appears to have some type of inductance control, as the impedance does not rise as dramatically as the MCM. Without seeing independent impedance measurements, though, no telling what is going on.

                            The 4 or 5 db shelf below 1K on the Airborne might be problematic, actually. Baffle step losses on a typical baffle will compound that shelf.
                            Worked well with my Destinations project...
                            See attached,
                            Wolf
                            Attached Files
                            "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
                            "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
                            "He is a true ambassador for this forum and speaker DIY in general." -Ed Froste
                            "We're all in this together, so keep your stick on the ice!" - Red Green aka Steve Smith

                            *InDIYana event website*

                            Photobucket pages:
                            http://photobucket.com/Wolf-Speakers_and_more

                            My blog/writeups/thoughts here at PE:
                            http://techtalk.parts-express.com/blog.php?u=4102

                            Comment


                            • #44
                              Re: 8" woofer suggestion for an excellent british style classic 2-way speaker

                              This looks like a nice 8 incher for a two way system.
                              http://www.madisoundspeakerstore.com...m-8-wool-cone/

                              My favorite old school "British" two way was the KLS9 by Noel Keywood.

                              Comment


                              • #45
                                Re: 8" woofer suggestion for an excellent british style classic 2-way speaker

                                Originally posted by Pete Basel View Post
                                How about attempting to "clone" this $12,000 10" 2-way, half joking here, the
                                DeVore Fidelity Orangutan O/96:
                                http://www.stereophile.com/content/d...96-loudspeaker
                                Kind of remind me of some of the stuff AudioNote makes, all of it ridiculously priced too!
                                http://www.audionote.co.uk/products/.../an-j_01.shtml

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