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In Reply to: What does it do to the sound? posted by mrrjm on April 28, 2002 at 16:01:36:
In my humble experience, the advantages of the bugscreen removal result in significant reductions in turbulence in the throat area — which translate into in less distortion and better transient response.We (the Central Florida Audio Society) once had a blind A/B comparison of identical TD 2001 drivers, one with, and one without the bug screen. What was significant, was not that all of the members preferred the sound of the driver without the bug screen, but, in under 30 seconds, everyone that participated in the AB listen was able to tell which driver had no bug screen.
The disadvantage to this modification is that the bugscreen is there for a reason: To keep bugs, dirt and ferrous materials from migrating to the voice coil gap. This however, is more of a concern in a pro audio where the TD 2001 is used in commercial sound reinforcement. I have found that nylon pantyhose stretched at the junction of horn throat and mouth makes an effective seasonal bug (kid and pet) screen for compression drivers that have had their bug screens removed, as well as traditional drivers (with an exposed gaps area) that have a phase plug or no dust cap.
Paul B
Follow Ups:
on nylon hose. I had Tom Brennan over one Saturday, and while we were dicussing removal of the screens, we watched a Chinese lady bug crawl up one of the horns - in spite of the SPL...
Yeah, tell me about bugs here in the semi-tropics! [AKA 'Swamp World']. But one of the things that our local Chamber of Commerce will never admit to, is well known (to locals) as Florida's' “Secret Shame.” A indigenous tropical bounty of airborne and flying insects in the form of: Dozens of varieties of flying cockroaches (which include Palmetto, German, Asian, Cuban, Madeira, dusky brown, brown banded, Blaberus giganteus, and deaths-head), flying ants, love bugs, moths, termites, fleas, sand fleas, midges, mites, citrus gnats, no-see-ums, mosquitos, bees, wasps, yellow jackets, hornets, horse flies, fruit flies, and regular run-of-the-mill houseflies.What, no ladybugs? The lizzards eat them...
For those of you with similar environmental problems, I have found that bigleg hoochie mama nylon pantyhose does indeed make an effective seasonal bug screen.
Paul B
I have some 15" drivers with a phase plug. I guess the only thing I can do would involve covering the entire driver with something?I suppose building a speaker cloth grille will do the job.
Charlie
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