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Get familiar with the reaction system: Introducing the Reaction System

Because she let me.

EggguyEggguy
edited December 2 in DIY

Started a new project today because my chubby eggs are nearly done and because my wife let me. This one is my attempt at a more traditional speaker. It is inspired by the KEF Blade. It uses budget drivers on the shelf. Passive three way, tall and skinny but with a robot inspired arms swept back and splayed out. OK it's another TL. Gotta either get this outta my system or maybe not. Overall taper ratio is 8. I think two different tapered line will be sufficient because the woofers have a pretty high Q. Oh ya the drivers will be ND140-8 dual opposed with dowel rods connecting them at their screw locations. Like Brad did on his big boys. I think those speakers could poop a speaker like these. Oh ya also the MTM will use Peerless tC9fd18-08 mids and Dx20bf tweeters. I am hoping to achieve 2nd order acoustic slopes at 350 and 3.5K. It's always good to have wife approval but I still have to constantly remind myself that
this is a budget build.

jr@mactajanesSteve_Leeugly_woofer4thtryrjj456thplanetTurn2dynamoR-Carpenter

Comments

  • kenrhodeskenrhodes

    Budget doesn't mean low performance. I know from experience that the Mid-tweet combo will work well and the ND-140 will dig deep.
    I think you have a great combo, I'm looking forward to this build.

    Eggguy
  • tajanestajanes

    Interesting build

  • EggguyEggguy

    Oh ya, The mids will be aperiodic loaded. I have a resistive vent idea where the binding posts are.

    tajanes
  • EggguyEggguy

    @kenrhodes said:
    Budget doesn't mean low performance. I know from experience that the Mid-tweet combo will work well and the ND-140 will dig deep.
    I think you have a great combo, I'm looking forward to this build.

    I bought the mids from you. I shall give you the appropriate recognition.

  • kenrhodeskenrhodes

    I would not have remembered that had you not said something. Happy to see them getting used.

  • 6thplanet6thplanet

    Im totally digging the aesthetics.
    I assumed having the drivers at the beginning of a TL was not favorable. Is this not always true?

  • EggguyEggguy

    True, offsetting the woofer down the line does help the overtones from being so severe. I am hoping that the combined effect of the two or three lines with very different tapers will eliminate these overtones. Should be easy with these high Q woofers. I also plan to document this with squiggly lines for all you squiggly line guys out there.

    6thplanetugly_woofer4thtrydynamo
  • dynamodynamo

    You have the makings for a great sounding speaker there! Cool design, reminds me of Bill’s Linehoppers.

    4thtry6thplanetTom_S
  • WolfWolf

    I thought the same thing....

    InDIYana Event Website

  • EggguyEggguy
    edited December 4

    Something like this

    ugly_wooferSteve_Lee
  • EggguyEggguy

    I have problems at 170 Hz. Nearfield woofer shows a slight dip. Terminus shows a 6 Db. bump. It gets much worse at one meter. Can't make it better with the multi taper trick. I am thinking about going powered with these. Cheap powered like 30 bucks per China Amp. 2.1 TPA3116

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