In order to get a properly sized amp you need to know which version of the gt 10's they are. I went to JBL's website and saw a 4-ohm, 8-ohm, and dual 4-ohm voice coil version. If you have the 8-ohm version then i would wire the two subs in parallel and would bridge a Digital Audio
DA2800 amp or a Logic Sound Lab
LSX2600 and if you have the 4-ohm vesion then again i would wire the two subs in parallel and get the Digital Audio
DA1800 mono amp or the Logic Sound Lab
GSX26HC mono amp. If you have the dual 4-ohm voice coils then i would wire each sub's voice coils in parallel to achive a 2-ohm load on each sub and run 2-channel Digital Audio
DA2800 or 2-channel Logic Sound Lab
LSX2600
As for capacitor, i would definately follow the golden rule of 1-farad capacitor per 1000 watts of power. Might i sugest either a
http://www.ballistic-mobile.com/item.cf....s&cat3= or a
http://www.ballistic-mobile.com/item.cf....s&cat3= . If you are interested in any of these products i can give you a Zilvia.net discount.
Speed Safely!