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Single small cap on waveguide type tweeter response?

DrewsBrewsDrewsBrews
edited June 27 in DIY

I have heard of using a single small cap on a tweeter with a waveguide/horn boosted response to flatten the response and create a natural crossover point. I'm playing around with the idea with the $5 buyout tweeter. Wondering if there are caveots that I'm not thinking of? I'm thinking phase will be the elephant in the room.

I took the response and gave it a tilt. This would have a nice natural crossover point ~2.4khz. Though this is not realistic as it assumes a flat slope. Guessing I'd be looking at more around 2.8khz. Planning to try a small build so small/compact crossover would be nice. Just wondering if I'm chasing my tail before I commit to making any sawdust.

[EDIT] Id put a parallel resistor to knock down the db and resonance.

Comments

  • tajanestajanes
    edited June 24

    Looks interesting. As long as the tw can handle the 1st order HP lower-ranges.

    edit: + on your edit

  • DrewsBrewsDrewsBrews

    Thanks. Based on the lack of other response I guess this was a dumb question.

    I've got some .18cf flat packs that are perfect for 830855s that I have a pile of. I'm checking out the cheap tweeters I've got to do a fun quick build. Unfortunately the techtonic units I made little enclosures for are too large to fit both drivers on the baffle or I'd just do that. The small woofer should limit the total output capability anyway so I may be able to get away with less tweeter control. Guess I've just got to try and see

    Steve_Lee
  • jr@macjr@mac

    Not a dumb question at all.

    Steve_Lee
    I have a signature.
  • DrewsBrewsDrewsBrews
    edited 12:51AM

    Oah well. I decided to use some SB21RDCs I got a while ago on sale. I figure you guys would be more interested in that combo. Maybe use some fancy veneer and try my hand at a guitar grade french polish... I picked up some pummice powder to try the grain filling technique.

  • WolfWolf

    Got a link to the pummice method?

    InDIYana Event Website

  • BobBarktoBobBarkto

    https://www.finewoodworking.com/videoworkshop/2019/11/a-perfect-french-polish-finish

    powered by beer
  • dcibeldcibel

    I've generally found that a single cap is "not good enough" when evaluating the driver's distortion, necessitating a very high crossover point which creates other problems. I often end up with a 3rd order filter on the tweeter, waveguide or not.

    DrewsBrews
    I'm not deaf, I'm just not listening. https://discord.gg/h5SuNKDJfx
  • GowaGowa
    edited 9:37PM

    https://www.rubiomonocoatcanada.com/

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