Caps as high-pass filters


I have been very happy using the high-pass filters on my subwoofers to blend the subs with teh speakers. It works well.

However, in an effort to minimize signal paths, wouldn't it be more efficatious to use a capacitor at speaker level to compliment the low-pass filter characteristics of the sub, bypassing the extra couple of meters of interconnect?

Pre=> amp=> speaker level input of sub with lowpass filter
Pre=> amp=> capacitor=> speaker

Anyone try this before?
If so, how would I figure out the capacitor values for a given slope and frequency?
Suggestions of type and brand of cappacitor?

Thanks for any input!
bignerd100
If you just use one capacitor the slope will be 6dB/octave.
IMHO, a lousy idea.
Adjusting the filter between sub and speakers can make small differences and improve the match. Most DSP amps will allow you to do this. (Filter slopes are typically between 24 db/octave and 12 db/octave.)

However, adding a capacitor in order to minimize the signal path does not seem like a justifiable reason for making this kind of adjustment.