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Design using the Linaeum ribbon

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  • Design using the Linaeum ribbon

    Really liked the Linaeum ribbon and have a few lx-5's sitting around with the surrounds rotted ... what can I do with them?

    1) Recone the woofer and live with the bloated and not very well defined bass/mid bass.

    2) Replace the woofer; what will physically fit in the hole without major modifications and how will it work in the mandated volume.

    3) Another DIY project. (Have a couple weeks off around Christmas ) The project would need to be; a) affordable<~$250 not counting cabinet material. b) fairly simple build (not a master woodsman or electrician), c) most importantly needs to sound good, as a reference to good sound, some of the best speakers I've heard; Apogee Caliper Sigs driven with Acurus amps, and the Spectral/MIT 2c3d system with Avalon Acoustics Radian. (I do not expect expect this level of performance with a ~<$250 investment, but it gives you an idea of the sound I prefer.) d) and it must be able to place the performers in their proper places on the stage, ie; the speakers must disappear.

    Thoughts on the project:

    ... adding a ribbon tweeter (or amt?) to supplement the high treble where the Lenaeum response falls off.
    ... this could be a multi box system allowing the possibility of adding a bass woofer later while keeping the initial costs down
    ... and did I mention it has to be affordable, disappear in the music, and sound good. :rolleyes:
    http://techtalk.parts-express.com/fo...khanspires-but
    http://techtalk.parts-express.com/fo...pico-neo-build
    http://techtalk.parts-express.com/fo...ensation-build

  • #2
    Re: Design using the Linaeum ribbon

    I know Roman C had some of those tweeters,not positive but I think he did a project with them.

    Comment


    • #3
      Re: Design using the Linaeum ribbon

      It seems PE has the Usher 8948a 7" on sale for $109. Not counting cabinet materials and the minidsp 2x4, this is within budget.

      What's the opinion on going this route?
      http://techtalk.parts-express.com/fo...khanspires-but
      http://techtalk.parts-express.com/fo...pico-neo-build
      http://techtalk.parts-express.com/fo...ensation-build

      Comment


      • #4
        Re: Design using the Linaeum ribbon

        FWIW.
        HP-5210 5-1/4" Poly Cone Rubber Surround Woofer 8 OhmThis 8 ohm 5-1/4" woofer will surprise you for the price. With a poly cone and rubber surround, this driver can be used in less than optimal environments. Using an aluminum former and vented pole piece this driver can handle up to 50 watts RMS, and being 89 dB efficient it is capable of high output for a driver this size. With a raised spider and bumped back plate, the possibility of physical damage from over excursion has been minimized. This driver is ideally suited for small 2-way systems.Special purchase -- limited quantities available!




        FaitalPRO 5FE120 5" Professional Midbass Midrange Woofer 8 OhmFaitalPRO's 5FE120 5" professional midbass woofer driver has an extremely flat response from 65 to 6,000 Hz for use in applications where high fidelity is required, such as studio monitors and reference speakers. Great off-axis response up to 3,000 Hz allows it to be combined with many high frequency drivers and tweeters for a great sounding two-way speaker.A treated paper cone with a half-roll NBR (Nitrile Butadiene Rubber) surround offers outstanding durability, while the truncated, stamped-steel frame allows for very tight speaker-to-speaker placement which is ideal for multi-way speakers and line arrays. To combat distortion, an aluminum demodulation ring is placed atop the pole piece to reduce stored energy and inductance. Made in Italy.

        Comment


        • #5
          Re: Design using the Linaeum ribbon

          Thank you. The FaitalPRO sounds like a winner for the oem aluminium enclosure.

          In your honest opinion, do you think the Linaeum tweeter is worthy of a driver like the Usher. (In a proper enclosure off course)
          http://techtalk.parts-express.com/fo...khanspires-but
          http://techtalk.parts-express.com/fo...pico-neo-build
          http://techtalk.parts-express.com/fo...ensation-build

          Comment


          • #6
            Re: Design using the Linaeum ribbon

            IMO the Linaeum is a unique tweeter but there are $30 tweeters that sound better. I'd treat it as a budget tweeter and choose the < $50 mid woofer accordingly.
            John H

            Synergy Horn, SLS-85, BMR-3L, Mini-TL, BR-2, Titan OB, B452, Udique, Vultus, Latus1, Seriatim, Aperivox,Pencil Tower

            Comment


            • #7
              Re: Design using the Linaeum ribbon

              There is a review (rebuild of lx-5) using the FaitalPro by Rational35, this is what I've been looking for. I'm a complete noob with a soldering iron, but why does his crossover parts list not match the picture and could someone help me out in building that crossover. (The minidsp is going to be used elsewhere)

              Thanks for the heads up on the FaitalPro and an honest opinion.
              http://techtalk.parts-express.com/fo...khanspires-but
              http://techtalk.parts-express.com/fo...pico-neo-build
              http://techtalk.parts-express.com/fo...ensation-build

              Comment


              • #8
                Re: Design using the Linaeum ribbon

                Kornbread, jhollander's comment is right on the money.

                re: the crossover: for one thing, I incorporated the original crossover parts in the cabinet into the new crossover. I have lots of AWG18 enameled magnet wire around, so I added turns to the original 1mH inductors to bring them up to 1.2mH. There was a perfectly good 6.2uF film cap in there, so I added a 3.9uF Solen in parallel to make the 10uF first tweeter cap.

                The rest of the parts went on the new crossover board, mounted externally on the back of the cabinets. Even there, I used composite parts: the 16uF is a Dayton 15uf with a 1uF in parallel. The 3 ohm resistor is made from a 6.8 and a 5.6 ohm in parallel. The 25uF cap is made with a 10uF and a 15 uF in parallel. And, I added a 30 ohm resistor across the tweeter. I was hedging my bets and wanted to have some ability to try different values in the second section of the woofer low-pass filter. Finally, I simulated the crossover in Bill Waslo's XSim program to get a feel for things, listened, and decided to stay close to Larry van Wormer's original design.

                I'll post more pictures, schematics, and XSim screenshots in the next few days, and try to help with laying out your boards. This project was worth the effort, imho.

                Comment


                • #9
                  Re: Design using the Linaeum ribbon

                  Thanks for the reply, looking forward to getting this project off the ground and soldering my first crossover together.
                  http://techtalk.parts-express.com/fo...khanspires-but
                  http://techtalk.parts-express.com/fo...pico-neo-build
                  http://techtalk.parts-express.com/fo...ensation-build

                  Comment


                  • #10
                    Re: Design using the Linaeum ribbon

                    Ok here's a start. This is a crossover designed by Larry Van Wormer for an LX5 upgrade using a (obsolete) SEAS MP14RCY/P driver, several years ago. It works really well with the FaitalPro 5FE120. This is the basic crossover schematic I started from:
                    Click image for larger version

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                    Here's the schematic re-drawn to show how it was built, using some parts on an external board:
                    Click image for larger version

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                    20ga. Jantzen inductors are fine for the two smaller values. The resistors are real parts, inductor resistance is accounted for in the design.

                    I'm not set up to do any real measurements right now, but I traced a FRD and ZMA file for the 5FE120 from the manufacturers graphs using an frd-trace utility. I just used a default sample Tweeter.frd file in the Xsim program. The frequency response graph is whacked, because the Tweeter.frd file I used is 10-15dB hotter than the Linaeum.The electrical response and impedance graphs shouldn't be too far off, though. FWIW:
                    Click image for larger version

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                    Next, I'll try to get some more useful build pictures posted, so you can evaluate layout options.
                    Merry Christmas, All!

                    Comment


                    • #11
                      Re: Design using the Linaeum ribbon

                      It's a very interesting tweeter.

                      The good: Near perfect 360 radiation. Front and back frequency response is the same. Low distortions.
                      The bad. Frequency response suck out around 12 Khz. Low sensitivity (around 82db)

                      There are a few different versions of the tweeter. I measured at list 3 of them.
                      Because of it's low sensitivity and power handling It's best suited to be used as an ambient tweeter with adjustable L-pad, not as a main tweeter. Of course one could go crazy and use 10-15 of them per side and build a line array. Near field monitor use would be Ok too.
                      http://www.diy-ny.com/

                      Comment


                      • #12
                        Re: Design using the Linaeum ribbon

                        I've got a pair stashed in the attic that have never been used. They are the version sold in the stores years ago. If anyone wants them for the cost of shipping, send me a PM. Won't be till after the holidays though--right now I'm about 700 miles away from them.
                        Free Passive Speaker Designer Lite (PSD-Lite) -- http://www.audiodevelopers.com/Softw...Lite/setup.exe

                        Comment


                        • #13
                          Re: Design using the Linaeum ribbon

                          Rational35, on the last set of pictures, c4 has no value listed but it looks like a line has been drawn through it?

                          r-carpenter, I've always been a sucker for the odd ... and that tweeter. Don't really know why, I just like it. TOL, wondering how the company Linauem dealt with the low power handling on their high end models featuring the film tweeter? Could the RatShack model be a water-downed version of their 'real' tweeter? Is there a possibility of a DIY film tweeter and/or mid and could this be considered similar to a DML/NXT type of speaker?
                          http://techtalk.parts-express.com/fo...khanspires-but
                          http://techtalk.parts-express.com/fo...pico-neo-build
                          http://techtalk.parts-express.com/fo...ensation-build

                          Comment


                          • #14
                            Re: Design using the Linaeum ribbon

                            Originally posted by neildavis View Post
                            I've got a pair stashed in the attic that have never been used. They are the version sold in the stores years ago. If anyone wants them for the cost of shipping, send me a PM. Won't be till after the holidays though--right now I'm about 700 miles away from them.
                            I got 3 PM's fairly quickly, but Roman responded first. I'll follow-up with him when I get back home.
                            Free Passive Speaker Designer Lite (PSD-Lite) -- http://www.audiodevelopers.com/Softw...Lite/setup.exe

                            Comment


                            • #15
                              Re: Design using the Linaeum ribbon

                              Thanks Neil!
                              I am actually collecting them to do a dipole line array.

                              Originally posted by Kornbread View Post
                              r-carpenter, I've always been a sucker for the odd ... and that tweeter. Don't really know why, I just like it. TOL, wondering how the company Linauem dealt with the low power handling on their high end models featuring the film tweeter? Could the RatShack model be a water-downed version of their 'real' tweeter? Is there a possibility of a DIY film tweeter and/or mid and could this be considered similar to a DML/NXT type of speaker?
                              If I remember correctly Linaeum had a high performance version of that tweeter. The patent is expiring soon if it didn't already. It's possible to do a DIY version of it. Voice coil is printed on the flat film.
                              http://www.diy-ny.com/

                              Comment

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