Does Jl Audio 8w7 need its own battery? JL Audio Amp?

[picniick]

I have questions about my setup for a 8w7. I like coming across real experiences or general help from anyone.

1.) So, Definitely getting a ported enclosed to Jl Audio Specs. With a 250w JL Audio Amp, or I was truly considering a Jx400/4D. Hard to choose because I don’t know if it will really make a difference using one or the other. I want as much bass as possible for this subwoofer, but I don’t want to over power it.

2.) Is an extra battery necessary for an 8w7?? If so, any suggested brands and/or set ups? I’m open to adding an extra battery because I own a BMW ‘02 330i, its a nice car but not that trust worthy right now. I plan on keeping my stock harmon Kardon setup because they bump as it is!

I have been out of the game for a while, not only that but I’ve never owned a w7 before... so any help is greatly appreciated! 

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[TaylorFade 10+ year member]

BMW batts are beefy AF. They can certainly handle an extra 250w or so. You will be fine.

I would get the little mono and not have to worry about bridging the 4 channel.

 

[hispls 5,000+ posts]

Stock electrical should be able to support a few hundred watts amp just fine.  About the 1000W mark is where you start to look into electrical upgrades, and even then depending on your listening habits, stock with just a premium parts store AGM type battery should do the job.

The W7 could probably hang with a bigger amp though.   Warrantied up to 500W implies you should be able to run a 500W rated amp to it.  Might want to keep an eye on over excursion but having that little extra power on tap might come in handy.   JL 500/1 has always been a ballsy little amp (best selling amp of all time), can't vouch for the current models but I'd have high expectations if you don't mind the JL price tag.