Titan-615LX official design info thread

Discussion in 'Speaker Kit Information' started by Matt Grant, Jan 18, 2017.

  1. Hi Matt,
    I'm adding the second MBM 15's to my Titans like Mike and Jarod. Initially I'll be paralleling them with the existing 15's. Can you tell me what mod I need to make to the crossover? Also, in about a month I will be Bi-Amping them like Mike, will there be any additional change I need to make to the crossover when Bi-Amping them?
  2. A 4uF cap should be placed in parallel with the 18uF cap (or replace it with a 22uF cap). A 10 Ohm resistor placed in parallel with the 6 Ohm resistor (or replace it with a 4 Ohm resistor). Finally remove or cut a lead from the 33 ohm resistor. The second woofer should just be wired in parallel with the first woofer to the crossover board.

    Unfortunately all the setup I did to Mike's speakers with the active Bi-amping was done in his room and as such they have EQ and filter settings that were largely influenced by the room itself. So those setting won't be suitable for others.

    I haven't done any true testing myself on the dual woofer version since I only have one woofer and enclosure. The passive approach has only been simulated and I offer that only as an optional untested modification. I don't like the idea of releasing active filter settings on simulation alone so I don't plan on releasing those settings until I can actually measure the speaker and make sure it actually sounds like it should.
    18Hurts likes this.
  3. #28 Paul Fr, Feb 25, 2019
    Last edited: Feb 25, 2019
    Hi Matt,
    Are there FRD and ZMA files available for the Titan-615 LX drivers? Especially for the Mid and Tweet as mounted on the dual horn. I've been playing with XSim 3D and want to try bi-amping or tri-amping my Titans. Any data on the LX woofer and/or FRD and ZMA files on the woofer?

    I converted graphs from Eminence and Celestion for the mid and tweet, but that doesn't reflect response and impedance when mounted on the dual horn.

    XSim is a very nice program. I have been playing with it a bit by using your crossover component values and comparing your mod updates with original. I like the change to the mid and tweet.

    I lowered the tweet using DSP in my amp instead of adding the 27 ohm resistor. Since I cross fire the left and right front, I lowered the center a bit more to give similar voicing. I could have decreased the center less and not lowered the left and right front, but, the setup is working well as is.

  4. Hi Paul,

    My FRD files are kind of a mess for this design and won't be good to tinker with since they don't really accurately reflect the whole response of the speaker.
  5. Thanks Matt. I'll keep plugging away and see what I come up with. Looking forward to any updates from you. The Titan-615 LX was a very enjoyable project. I could leave it alone and be happy. But, I like to play and learn more. Thanks again.
  6. Hi Matt

    I am just putting together my new Titans and I am just wondering ... for dampening you recommend "(~2" thick foam, polyfill, fiberglass or recycled denim)".

    Would you also consider 2" of OC703 ... OR a couple layers of 1" Quiet R Rotary Duct Liner better options ... or would they actually hinder performance?

  7. They are kind of on the dense side but should still be ok.
  8. Thank Matt

    I think I will just get some foam then ... I don't want to take a chance on hindering performance.


  9. Can you guys please post or send me the TS specs for the custom Em 15? Email is fine as well. I'd like to model it in various enclosures and applications. Thanks!

    At very minimum, curious about Xmax, Xmech, Mms? Fs?

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