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Has anyone done this? Is it even possible? How did it turn out? Which hole did you use?
Im not a basshead or anything I just wanted to add some solid low end to the factory system. I mostly listen to rock but I do listen to some hip-hop so Id like some bass-heavy, lowend extension/control. My goal was to try not to cut up the rear deck and make any modifications outside of some bolt/screw holes.
I was looking to mount a sub box to the underside of the rear deck inside the trunk with a baffle ring around the sub, sealed against the deck to isolate the subs sound waves into the cabin reflecting off the back glass.
I was originally thinking about 2x 8" subs in a sealed box but looking at the deck Im not sure I can use more than one without cutting another hole and Im not even sure I have a viable hole for the one.
I labeled all the holes in the pics for easy reference.
Would I be better off trying to find a super-shallow-mount sub to replace the factory sub, building a thin box for it(fiberglass?) and then mounting it back in the factory location above the rear deck inside the cabin? I havent taken apart the rear deck yet so I dont know what it looks like from inside the cabin without all its trim pieces on and there are no good pics of it that I could find on the internet. Ive only been able to find a picture of the sub itself. Does a sub that thin even exist aftermarket and would it even be an upgrade worth doing(amplified of course)?
If anyone has any suggestions or experience with this please let me know.
I wanted to explore custom options that put the sound into the cabin. Im hesitant to confine lots of low end waves to the trunk because I want to minimize rattling.
Besides, I have a bunch of Zapco amps(500.1, 350.2, 750.2) and some Partsexpress speakers that have been collecting dust.
Low frequencies are omni directional so you don't necessarily need it to port directly through the deck lid. I will be working on a custom box built into the left side of the trunk where the first-aid kit sits. It will be fiberglass using an 8" Arc Audio sub. Should help the bottom end without sacrificing trunk space.
I have seen and built sub boxes onto the deck lid. They can work good, but you have more chance of rattle from the decklid itself. Make sure and use dynamat.
Low frequencies are omni directional so you don't necessarily need it to port directly through the deck lid.
Im aware of that. My problem is that I dont want to use very large or numerous drivers because I dont want to sacrifice the space for them. With a single, small driver I would want to maximize the amount of output I get from it so Id prefer to send those frequencies directly into the cabin area.
Originally Posted by CGC
I will be working on a custom box built into the left side of the trunk where the first-aid kit sits. It will be fiberglass using an 8" Arc Audio sub. Should help the bottom end without sacrificing trunk space.
I have two kids. I literally use every square inch of floor space in my trunk including the netted cubby on the drivers side of the trunk. The only space I dont use is the space directly below the rear deck which is why I wanted to hang a sub box from there.
Originally Posted by CGC
I have seen and built sub boxes onto the deck lid. They can work good, but you have more chance of rattle from the decklid itself. Make sure and use dynamat.
Oh, I know. It will be a battle for sure. Im going to try to make the box as long and wide as I can so I can have multiple points of mounting contact to spread the vibration out across the deck to try and minimize rattling. Dynamat will likely be in order as well.
Originally Posted by insame1
i believe C is where the stock sub is. you can remove that and cut your hole there.
Im aware of that as well, although I dont think I have a sub there. The pictures Ive seen of w204s with the sub you can actually see the sub through the holes. As you can see in my picture the sub isnt visible. Maybe thats W204s with the HK system.
Ive thought about using a ported box and just extending the port through the reardeck and sealing it off but I read a couple places that Ill lose some output because the sub and port would be firing into two isolated chambers(the trunk and the cabin). Is this true? It sure would be a whole lot easier to put a 4" port through an existing hole in the rear deck and seal it off than it would an 8" vibrating transducer.
Another thing Ive considered is building a bandpass enclosure and running it straight to the cabin instead, to avoid the port/speaker handshake issues referenced above. Any thoughts?
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