Experimenting with damping material (Singular)

by MikeH , Monday, July 02, 2007, 04:30 (6134 days ago) @ MikeH

I've damped driver the basket a bit more and added some wooden phase plugs, The phase plugs really cleared up the high end.
I found I had over-stuffed the back chamber, there is much less midrange coming out the back vent now.

The high highs still weren't there so I added a Fostex FT17H yesterday with 1uF polypropylene capacitor.

Here is a picture of what I did to the driver, 5mm self adhesive felt on the back of the magnet, magnet to basket joint filled and shaped with blu-tac, 5mm felt inside the basket legs, bitumen and foil on the outside of the basket legs. It seems to keep things in control better at high volume now.

I neeed to play with the filter to get the tweeter right next. I find them too "bright". I'll try adding an inductor to roll them off more steeply at 12dB/octave at about 10kHz.
I want to avoid any filtering on the fullrange driver, it drops off very rapidly above 12kHz by itself.

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