Re: How to discharge a cap
Pull the main fuse from your system. Then turn power on from your HU. The amp will try to power up for a second from the charge left on the cap, and discharge it. It's then safe to remove it without fear of sparks.
A good quality capacitor is very efficient and poses virtually zero 'extra' load on an electrical system. If you already have one, I wouldn't remove it. It might not do much good but they really don't hurt anything.
1999 Buick Park Ave Ultra
Head Unit: JVC KWHDR720
EQ: Audiocontrol EQL
Front Stage: Hybrid Audio Technologies Imagine 5.25
Sub Stage: In process (will be Boston G310)
Amp: Boston Acoustics GTA-704 4 Ch
Rear Fill: Boston SE953 6X9's