Announcement

Collapse
No announcement yet.

Heard an Excellent Speaker Yesterday

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Heard an Excellent Speaker Yesterday

    Wolf (Ben) and Matt came down for the day yesterday. Ben brought his new little towers named the "Nephilia". These used a HiVi woofer and the large Airborne AMT tweeter. After listening to the Testarossa's a while with their final crossovers (not the ones they had a InDIYana), we switched over the Nephilia. These speakers were wonderful with a beautifully balanced presentation. Their tonal balance was as natural as anything I have heard. Frequency response measurements confirmed an exceptionally flat on-axis response (I didn't take any off-axis). The Testarossa's had more slam and were more dynamic sounding. They also seemed to have better resolution of detail, but considering the cost difference the Nephilia did very well. There are a lot of much more expensive speakers out there that couldn't touch these. Ben's crossover tuning was perfect; these were ruler flat through the crossover and the drivers blended really well. He did an excellent job on the bass tuning too. Like a lot of rooms mine has a midbass peak to it and this blended well with Ben's speakers to make then sound fairly impressive for a single 6" driver. Ben has a switch on his crossover to switches between two different capacitors of the same value in tweeter highpass circuit. It's any interesting test as there is definitely a change in how they sounded depending on which cap was used. (As life would have it, I preferred the sound with the cheaper cap).

    We headed out for lunch at a local grill in the neighborhood and when we returned we got down to some tweeter measurements. Ben also brought down his Transducer Labs Magnesium tweeters and I brought out the Berylliums for comparison. We measured frequency response and distortion for both and compared them using my egg-crate foam and thick felt tweeter set-up. The Berylliums were a bit more sensitive but frequency response and distortion overlaid each remarkably well. Obviously, we didn't listen to them in a system with music, but I would think it would be hard to tell them apart based on the measurements.

    Since we had it set-up without making any changes in mic position or drive level I switch out the two Transducer Labs tweeters, a Scanspeak Aircirc 660000, Morel ET448, Morel CAT308, Dayton RS28f, and an Airborne RT4001. I captured distortion profiles on each of these under identical conditions at a level that was about 105 dB (which was loud, and I didn't want to push it any higher). This gave us some interesting results. Any guesses on which tweeter has the lowest Total Harmonic Distortion above 2 khz? How about lowest 3rd order? I kinda wish now that I had pulled out the SB26's too just to see how they did.

    All in all, it was a fun day. I appreciate Ben and Matt making the drive. I heard some great music I was unfamiliar with too that I will now have to add to the collection. Thanks for day guys.

    Jeff B.
    Last edited by Jeff B.; 10-12-2014, 09:00 AM.
    Click here for Jeff Bagby's Loudspeaker Design Software

  • #2
    Re: Heard an Excellent Speaker Yesterday

    Well, of course I wish I could have been there.
    Any chance that you'll post the tweeter measurements? - I haven't heard any of those, and I'll never
    afford about half of them.

    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

    Comment


    • #3
      Re: Heard an Excellent Speaker Yesterday

      I'm saying Don!
      https://www.facebook.com/Mosaic-Audi...7373763888294/

      Comment


      • #4
        Re: Heard an Excellent Speaker Yesterday

        Jeff, I wish you had a website. You too Wolf.
        No matter where you go, there you are.
        Website

        Comment


        • #5
          Re: Heard an Excellent Speaker Yesterday

          Those were definitely one of my favorites from the meniscus gathering.

          Comment


          • #6
            Re: Heard an Excellent Speaker Yesterday

            Ben was kind enough to bring them down to for me to hear directly after the Meniscus event. We played a good variety of music and gave them a good hour or more of listening time. The capacitor switch was really surprising. Imaging was great and they handled themselves very well.
            https://www.facebook.com/Mosaic-Audi...7373763888294/

            Comment


            • #7
              Re: Heard an Excellent Speaker Yesterday

              Thank you, Jeff, for hosting us and your thoughts on my Nephila. It was a great fun time! I don't know the price of the other one, but the ~$5 cap I also prefer, and that is the one we took all the measurements with. For reference, we played Morphine's "Yes" and Sara Bareilles "Live at the Variety Playhouse", that I think you were liking.

              Chuck- Yep, I played the "Once Upon Another time". I recall remarking, "I'm happy with them. These are nice.", and it was returned with a "Why, yes they are!" "Good recording too!".
              ...when that song was playing....

              Speedle- thank you for the compliment!
              Wolf
              "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


              • #8
                Re: Heard an Excellent Speaker Yesterday

                I'm guessing the Dayton!

                Comment


                • #9
                  Re: Heard an Excellent Speaker Yesterday

                  The least you guys could do is post some pics...;)
                  Some people are addicted to Vicodin. I'm addicted to speaker building.

                  The Chorales - Usher 8945A/Vifa XT25TG Build
                  ESP Project 101 Lateral MOSFET Amplifier
                  LM4780 Parallel Chipamp
                  Sonata Soundbar Project
                  The Renditions - Active/Passive Towers

                  Comment


                  • #10
                    Re: Heard an Excellent Speaker Yesterday

                    I think people would be interested in the egg crate foam and thick felt tweeter measurement set up. There has been great info on simulation and some information on making good measurements would be very helpful.

                    Comment


                    • #11
                      Re: Heard an Excellent Speaker Yesterday

                      Originally posted by bigfishe View Post
                      I'm guessing the Dayton!
                      No Daytons were used in the making of this xover.
                      It's another $5 4.7uF cap.

                      Later,
                      Wolf
                      "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


                      • #12
                        Re: Heard an Excellent Speaker Yesterday

                        Audyn

                        Comment


                        • #13
                          Re: Heard an Excellent Speaker Yesterday

                          Originally posted by 50 watt head View Post
                          Audyn
                          I have Audyns in the circuit, but no- not one of those I switched out.
                          That said, I do prefer the Q4's to the Dayton caps, FWIW.

                          Later,
                          Wolf
                          "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


                          • #14
                            Re: Heard an Excellent Speaker Yesterday



                            The white cap in the upper left is my preferred $5 cap in this case, paired against something (not pictured) that Meniscus will be stocking.
                            http://www.northcreekmusic.com/Zen.htm
                            $4.75 each according to the website.

                            Later,
                            Wolf
                            "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


                            • #15
                              Re: Heard an Excellent Speaker Yesterday

                              Hey Ben, have you started a build site yet?
                              -Robert

                              Comment

                              Working...
                              X