phantom cone excursion

[herm]

Dave (Planet10) has a primer for the use of filters between the source and the amp.

Check out his site:

TLS.org | Passive Line-Level Crossover

herm

 

[simon7000]

Your unit has a 50K input impedance so that is why I picked that value. It should reduce the cone motion and not ruin the LF. Just connect it from the center pin of the CD output to the center pin of the input. Of course you can get a small aluminum box at Radio Shack and use RCA jacks to build a small stand alone filter. Or for a cheap test buy a cheap cord and cut it open. Leave the shield intact, just cut the center conductor and insert the capacitor. One for each side. If you don't solder you can use wire nuts!

 

[Swifty]

Thanks for the suggestions and guidance everybody, I will try Simon's idea and see whether I can live notice any downsides to this solution sound wise.

 

[chrisb]

Your unit has a 50K input impedance so that is why I picked that value. It should reduce the cone motion and not ruin the LF. Just connect it from the center pin of the CD output to the center pin of the input. Of course you can get a small aluminum box at Radio Shack and use RCA jacks to build a small stand alone filter. Or for a cheap test buy a cheap cord and cut it open. Leave the shield intact, just cut the center conductor and insert the capacitor. One for each side. If you don't solder you can use wire nuts!

If there's room enough on the amp to discretely locate a small toggle switch near the input jacks, the cap could be soldered in place with the switch bypassing for unfiltered. Altogether this would be less mechanical/solder points and wire in the signal path than with external gadgets, and it would be within whatever shielding the amp already provides.