2004 Moons and Tunes HELP!

[thegrimreefer420]

Hey what's up guys kinda new here I have a 2004 Vibe with the Moons and tunes package, I have a JBL 10 inch sub that I'd like to hook up but I'm COMPLETELY lost haha I'd love some help. Can the amp built in with the moons n tunes handle the JBL (rated 275 watts) Will posts pics of my vibe soon though just got passed down from my mum

[Derf]

Yes and No. Yes, the stock amp can be used to power other speakers. However, no, the stock amp is a 2 ohm amp, so (guessing) 4 ohm JBL will be way underpowered by the stock amp. Also, no, the stock sub is a dual voice coil setup, therefore if you were running only one 10" sub, the stock amp would not have balanced output which will create harmonic oddities. Their have been many posts on this site with pictures of people redoing the hatch area to add larger subs, and even reworking the plastic hatch panels to build the subs into the existing trim. I don't think it would be to much of a stretch to rework the rear passenger area to get an 8" sub with custom enclosure, 10" or larger would take some planning.

Depending on the the scenario, if space was an issue, I would suggest a 2 x 50 RMS amp and bass shakers under the front seat mounted to the floor boards (depending on how the rest of the car stereo system was setup)
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This gets past taking up valuable space, and can be placed closer to the listener, in some ways it could be more efficient.

[cptnsolo77]

I saw bass shakers on Crutchfeild years ago & totally forgot about them. Have you used them before?

[Derf]

I have used them, but not in a car. They do what their supposed to, but need input from someone that has installed one in a car on the optimum location. The closer the bass shaker is to you, the better the results.

I really thought about using them in my Vibe, but I was able to get the factory "sub" to work well. Just battling road noise, with the car off, system sounds awesome, after going over 30 Mph, the tire and engine hum make a good chunk of the bass disappear. Thought of using these to correct the situation, perhaps a rainy day project. Would require replacing the stock Monsoon amp with a true 4 ohm amp, another added cost for the project.

[thegrimreefer420]

I honestly wasn't even aware there were subs in the car already haha where are they?

[Derf]

With the moons and tunes package, the sub should be in the rear hatch, passenger side, you will see a speaker grill, should have Monsoon logo on it. You can do a search on this site for many posts on how to modify the monsoon system. Below link to post I made while upgrading the monsoon system that came with my Vibe, curious if yours is set up the same:
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