Car Stereos: help with my setup, alpine cda, subwoofer systems

Question
i have this car(lancer) audio set up at the moment (head unit alpine cda-117 ,speakers  jbl gto 938 & jbl gto 608c and jbl gto 1004 for my amplifier) id like to add subwoofer and amp on it. (preferably jbl too)what can you recommend and what else do you think should i add on my setup.
thank you very much sir.

Answer
Hi,

Sorry about the very long delay in answering your question.  The fact is, this is the sort of question I really can't answer very well:  I don't know how your current system sounds, what it might be missing, or what your goal is in adding an additional amp and sub.  I don't know whether you're looking for head-turning bass or just some balanced, low-end reinforcement.  And I haven't had the opportunity to sample very many JBL subwoofer systems.

As a general rule, one thing I can recommend is to look for a combination sub/enclosure package, rather than buying a component subwoofer and trying to match it with a pre-fabricated box.  The nice thing about buying a enclosed subwoofer is that the manufacturer has already done the work of designing and building a custom box that's matched to the subwoofer.  I know that JBL makes several different models of enclosed subwoofer systems.  If you're just looking for some low end support in a balanced audio system, you can pick an enclosure that uses a single subwoofer.  There's no need to buy a dual box system unless you're looking for a ton of bass.  Once you've picked out a subwoofer, you can find an amplifier to match it.

Hope this helps!

Brian