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adding more bass

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Old Apr 11, 2012 | 10:41 PM
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Default adding more bass

One of the factory DVC mid-woofers on mom's firebird blew out, so I replaced them with some JBL 2 way's. The signal is bass only, and actually worked out pretty good.

That said, I harvested the one good working one. I have a jensen 8" (~110 RMS) in my truck right now shoe-horned behind the driver's seat in a 1.5 or so cubic foot enclosure, running on a 70WRMS visonik VB101PK.

I'm figuring this woofer is rated around 35-40 watts per voice coil. Each coil is 4 ohms. The factory Monsoon amp is 200-240 RMS over 8 channels (front door component set, rear hatch component set, and each coil on the woofers) so say they're designed for 25-30 watts per side.

I have a second visonik amp, figure it's 70WRMS at 4 ohms so 35 at 8 ohms. So I'm basically driving the speaker at about half power. Actually has some bass to it with the level **** at about half power, plugged into my laptop.

It's designed for free air, I'm thinking make a small enclosure out of my scrap panels of MDF that's like 3/4 of a square foot. I already have the other amp under my passenger seat, plenty of room for a second amp and power/ground distribution blocks (just make a new mounting panel). I have power as an 8 gauge from the battery, ground going to the right front passenger seat bolt, 8 ga as well.

The theme is stealth. The backseat (if you can call it one) is still there, the existing sub box is flat black, amp is under passenger seat. I'm thinking make this one floor loaded as well, make a minimum depth, so the front seat can move all the way back unimpeded.

It's free sans distribution blocks and a little time, think it would be worth it?





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Last edited by magnethead; Apr 11, 2012 at 11:23 PM.
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Old Apr 13, 2012 | 01:52 AM
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got the 6.5" put in. Had to play with the crossovers on the amps. I had the 8" set with a 250hz crossover at 50% gain. Backed it off to around 125hz @ 50%, and put the 6.5" to 250hz at 65% gain.

Made a 4" x 8.5" x 7.625" enclosure for it, that fits between the center console and back seat. Have the amp laying in the rear floor right now, need to cut a new mounting panel to put both under the pass seat.

thinking about taking the speakers I have on my desk, which were to go into my doors, and putting them in back instead. Both rear speakers are dead in the water. Right side actually had it's grille come off behind the paneling. and the rears are significantly easier to service than the fronts, and the fronts are in good condition, no reason to swap them.
 

Last edited by magnethead; Apr 13, 2012 at 01:55 AM.
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Old Apr 16, 2012 | 06:00 PM
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Now that I got a ram I actually can look at more options as far as subs. The dakotas suck for rear space lol. I got alpine speakers and they have pretty good bass just for speakers, Still looking for a bit more tho.
 
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Old Apr 19, 2012 | 02:18 PM
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dodgeramguy that depends on if you actually need your back seat or not.. I ripped mine out.. :X
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Last edited by jondakotaguy; Apr 19, 2012 at 02:22 PM.
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Old Apr 19, 2012 | 03:01 PM
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I would die without rear space! Hunting season,fishin season and camping it all gets put in my back seat. I love having a ram I can pile all my crap on one side and still have room for a person or 2 sit in the back. The same amount of stuff used to take up my entire dakota seat.
 
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Old Apr 21, 2012 | 11:01 AM
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I use my tool box for that.. guns go between my sub and seats.. there is still room I guess i make it work.. I did have the box over to one side and still allowed the little 40 seat to have someone sit there.. but I bought this truck with the sole pourpose of that back seat being nothing but my sub box.. but here recently with things in the U.S. and the world being what they are.. I might rip them out. I'm thinking once i fix my tyranny sensors.. get the electric fan on and ram air & interchangeable snorkeler I might addd an extra gas tank or a bigger one..
 
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Old Apr 21, 2012 | 11:15 AM
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Dodge ram gas tank. I got a 34 gal under my truck.
 
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Old Apr 21, 2012 | 08:57 PM
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Good to know. Ty.
 
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