If the location of a port, and the direction it fires doesn't make that much of a difference (in general, assuming the port isn't too close to any walls, etc. etc.), does creating an "open air passage" connecting the pressurized air in your trunk to the interior of your car make a difference in how much sound reaches the driver?
I've read several places that allowing pressurized air directly into a car's cabin will amplify the db a person hears, and will reduce excessive trunk rattling. I've also had a couple of friends with systems that had a cutout in their rear seat that connected to their trunk, and claimed that their system was much louder because of it.
Common sense would say that more bass would travel to the driver if the sound waves had an unobscured path to reach him. IS THIS CORRECT?
Replies (1)
swez on 05/11/2004 19:53:29
This seems to prove out in most trunk bound sub applications. Yes, the bass waves will propagate (travel) through the trunk to cabin, but there is a reduction in dB gain and some upper bass frequencies attenuation.
Hatchbacks, SUV's and cars with flip down seats do offer a best case scenario as they share a common air space with cargo area. These vehicles do offer a few dB more SPL due to larger cabin space as well.
Swez
I've read several places that allowing pressurized air directly into a car's cabin will amplify the db a person hears, and will reduce excessive trunk rattling. I've also had a couple of friends with systems that had a cutout in their rear seat that connected to their trunk, and claimed that their system was much louder because of it.
Common sense would say that more bass would travel to the driver if the sound waves had an unobscured path to reach him. IS THIS CORRECT?
Replies (1)
swez on 05/11/2004 19:53:29
This seems to prove out in most trunk bound sub applications. Yes, the bass waves will propagate (travel) through the trunk to cabin, but there is a reduction in dB gain and some upper bass frequencies attenuation.
Hatchbacks, SUV's and cars with flip down seats do offer a best case scenario as they share a common air space with cargo area. These vehicles do offer a few dB more SPL due to larger cabin space as well.
Swez
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