Experimenting with damping material (Singular)
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.
Complete thread:
- Experimenting with damping material - MikeH, 2007-05-05, 04:24
- Experimenting with damping material - PeterSt., 2007-05-05, 04:51
- Experimenting with damping material - MikeH, 2007-05-05, 08:11
- Experimenting with damping material - GC, 2007-05-05, 08:09
- Experimenting with damping material - MikeH, 2007-05-05, 08:35
- Experimenting with damping material - GC, 2007-05-05, 08:49
- Experimenting with damping material - MikeH, 2007-05-05, 08:35
- Experimenting with damping material - Bert, 2007-05-05, 10:08
- Experimenting with damping material - MikeH, 2007-05-05, 10:54
- Experimenting with damping material - MikeH, 2007-07-02, 04:30
- Experimenting with damping material - Bert, 2007-07-02, 09:58
- Experimenting with damping material - MikeH, 2007-07-02, 11:19
- Experimenting with damping material - MikeH, 2007-07-03, 13:05
- Experimenting with damping material - Bert, 2007-07-03, 22:31
- Experimenting with damping material - MikeH, 2007-07-04, 03:30
- Experimenting with damping material - Bert, 2007-07-03, 22:31
- Experimenting with damping material - Bert, 2007-07-03, 22:33
- Experimenting with damping material - MikeH, 2007-07-04, 03:09
- Experimenting with damping material - MikeH, 2007-07-03, 13:05
- Experimenting with damping material - MikeH, 2007-07-02, 11:19
- Experimenting with damping material - Bert, 2007-07-02, 09:58
- Experimenting with damping material - MikeH, 2007-07-02, 04:30
- Experimenting with damping material - MikeH, 2007-05-05, 10:54
- Experimenting with damping material - PeterSt., 2007-05-05, 04:51