Why aren't multiple tweeters more common?

Discussion in 'Archived Threads 2001-2004' started by Jim A. Banville, Jan 5, 2002.

  1. Jim A. Banville

    Jim A. Banville Supporting Actor

    Joined:
    Jun 20, 1999
    Messages:
    630
    Likes Received:
    0
    Trophy Points:
    0
    After reading the glowing review of the 5-tweeter Lunare Mission One speakers by WEGG3 in the latest Stereophile Guide to Home Theater, I was wondering, would a speaker with a tweeter, mid/woof, tweeter, mid-woof, tweeter (lined up on the baffle in that order, be a good sounding design? Like the Mission One's, the centered tweeter could be padded down slightly due to the assistance from the other two tweeters, which in turn are slightly padded down in comparision with the main tweeter. Somewhat like the Mission One, the outside tweeters could be off-center on the baffle. This seems like it may be a nice DIY design that could be made for MUCH less than the Mission One, but I'm definitely no speaker design expert [​IMG] To get an idea of what I'm thinking about, imagine a typical midrange-tweeter-midrange speaker, like a common center channel speaker, but add two more tweeters on the outside of each midrange, and place those added tweeters off-center of the baffle. Get the idea?
    Here's a link to the Mission One... http://www.wegg3.com/html/SurfaceMission1.html
     
  2. Tom Brennan

    Tom Brennan Screenwriter

    Joined:
    Nov 1, 2000
    Messages:
    1,069
    Likes Received:
    0
    Trophy Points:
    0
    If one wants greater dynamic range than a single direct-radiating tweeter can give it's far easier to use a single horn tweeter than an array of direct-radiators. No problem blending the multiple tweeters without nulls plus horns have controlled radiation patterns so diffraction is no worry either. And the 105+ db sensitivity of horn tweeters is a plus. Biggest problem is cost, good horn tweeters like JBL Pro or TAD units are very expensive, you can buy a case of dome tweeters for the cost of a good horn.
     
  3. ThomasW

    ThomasW Cinematographer

    Joined:
    Nov 6, 1999
    Messages:
    2,282
    Likes Received:
    0
    Trophy Points:
    0
    Line array dome tweeters are a recipe for problems with comb filter effects. Great care must be taken to control the dispersion and the interaction between the drivers.

    There are several ways to approach the problem. A quick look at some of the M&K designs will show you one solution. Foam.....
     

Share This Page