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Old 04-13-2008, 07:56 AM   #1
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That's cool that the bass carries through!
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Old 04-13-2008, 02:49 PM   #2
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A speaker creates sound by pushing air at different frequencies. What you hear are the sound waves from that air being pushed. Now with subs in a sealed trunk with no direct passage into the cabin how on Earth could you hear the air that is being pushed?

It's thus questionable to state that the bass "punches right through" as if somehow magically the air jumps out of the trunk and into the cabin. Just because bass is omni-directional does not mean that it's omni-present too. What you're hearing is the thump of the bass hitting your trunk and you're definitely FEELING the vibrations in the car (which probably has more impact than anything).

If you're happy with it though and think it produces a good, clean, tight bass, then that's all that really matters. Enjoy.... When I worked for Harman on their OEM sound systems we also would install subs in the trunk (for factory upgraded stereos). It wasn't ideal but was usually the best we could do with the packaging options that we had. I think you've probably done the same here.
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Old 04-13-2008, 04:20 PM   #3
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"A speaker creates sound by pushing air at different frequencies. What you hear are the sound waves from that air being pushed. Now with subs in a sealed trunk with no direct passage into the cabin how on Earth could you hear the air that is being pushed?"

A while ago I stopped at 5-guys burger joint and picked up a couple of cheese burgers and a couple of bags of frys for the family. It was a 15+ minute drive home, so I put them all in the rear trunk to keep them warm. As soon as I started driving, all I could smell all the way home was burgers and frys. Based on that experience, there would seem to have to be some way for air to get from the rear trunk to the passenger compartment, I found that interesting,

Ed

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Old 04-13-2008, 06:16 PM   #4
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^^^^I can not wait to hear someone explain this one^^^^
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Old 04-13-2008, 09:50 PM   #5
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I actually drilled some small holes in the wall to let more sound into the boot area. How ever I didn't really notice that much of a change in sound with the holes added. You can see in the pic I put a small black speaker grill in the carpet to let the air through. (Just left of the oil fill)


Trust me every car stereo expert out there told me this would never work and I would never hear it. I went to 3 high end car stereo stores here and they all told me the same thing. One shop said they had tried it in a viper and you couldn't hear it. I purchased this box as a trial and error...it was made for a jeep wrangler.....I only paid $80 for the box. It turned out sounding great and I am very picky when it comes to sound.....my next move was to have them custom make a box that fit an 8" sub between the seats. I saw some pics a long time ago of a guy who had done this it was in a yellow boxster if anyone has the pics. They wanted $800 to make the custom enclosure. I like my $80 setup better.

You can definitely hear the bass and feel it...and yes I know the difference. I think there are plenty enough factory air leaks from the trunk area into the boot where the convertible top retracts to make this possible.

Yes the best sound quality would be to have no restrictions but on a scale of 1-10 10 having the sub in the cabin with you, this set up would probably rate a 9

We don't have many options when it comes to sub placement in our cars. Just trying to give people a few more options

The other pro to this set up is no one knows you have a sub setup or expects it. So would be thieves just pass me by.

If anyone would like to hear it and they are in Salt Lake City let me know. It's kind of hard to convince people how good it sounds in text.
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Old 04-13-2008, 10:05 PM   #6
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Quote:
Originally Posted by boxster7614
It's kind of hard to convince people how good it sounds in text.

I agree. Rating it a 9 out of 10 though gives us a pretty good idea. It doesn't make a lot of sense, but hey, if it works for you cool...

BTW, I put my sweaty gym clothes in my trunk and thankfully I never smell them! The food in the trunk deal does raise an interesting question as to how much air passage there is between the cabin and the trunk.
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Old 04-14-2008, 09:27 PM   #7
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I know many of the other members here utilize the same 8" JL 8WO install that I have in my car, and yes, it sounds very musical and offers decent output. A LOT of homework went into designing that sub, and based on my audio background, I'm at a complete loss to understand your logic on how this could work.

I have seen some 996 guys build a bandpass box into the FRONT trunk, and tune it through a port into the cabin through the right hand drive steering shaft hole in the firewall. I have heard one of these cars and it wasn't bad- punchy, but over a narrow frequency range as it to be expected of a bandpass box.

Now, with the subs in the REAR trunk of a 986, BEHIND the engine, BEHIND the SEALED firewall, how do you plan on hearing anything? Sure, you're vibrating the hell out of the metal, and yes you will feel that, and you are losing plenty of SPL to the outside environment, but since you have no channel by which to tune this into the cabin, and no, there aren't plenty of leaks in the firewall, I'm really at a loss as to how this is a good idea.

Sorry to disagree with your findings.

Patrick
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