Exotic Capacitors for Theater 4 Pi (or other Pi Xovers)

Has anyone used plain ol' Electrolytic capacitors for the speaker xover (values 8, 10, & 22uF) ?
I'm having a tough time locating audio grade caps (polypropylene) here and mail order overseas is expensive (UPS, Fedex shipping costs are more than the caps themselves).
Has anyone tried using Polyester caps.

Follow Ups:

Try Madisound or PartsExpress Solen Fast Caps etc nt. - Robert Hamel 18:13:02 01/16/02 (12)
- Re: Try Madisound or PartsExpress Solen Fast Caps etc nt. - Super_BQ 19:38:10 01/16/02 (11)
  - Electrolytic capacitors - Wayne Parham 00:23:25 01/17/02 (8)
    - Re: Electrolytic capacitors - Super_BQ 03:15:00 01/17/02 (7)
      - Re:CH-3 - Till E. 05:02:24 01/17/02 (6)
        
        Re:CH-3 - Super_BQ 23:33:16 01/17/02 (1)
        
        $30.00 each, plus S & H - Wayne Parham 00:15:32 01/18/02 (0)
        
        Re:CH-3 - Adam 06:25:26 01/17/02 (3)
        
        Re:CH-3 dimension - Till E. 10:58:05 01/17/02 (2)
        
        Re:CH-3 dimension - Adam 12:09:57 01/17/02 (1)
        
        Re:CH-3 dimension: 14 1/4"X4 3/4" <nt> - Till E. 17:41:21 01/17/02 (0)
  - They have an Email Address???? - Robert Hamel 20:55:06 01/16/02 (1)
    - Re: They have an Email Address???? - J Harris 06:49:15 01/17/02 (0)