How to get trunk bass into cabin area?

blue934 · 20th October 2011, 01:23 AM

a friend has an 06'ish jetta with subs in the well sealed and insulated trunk. he is complaing about low spl and SQ and wants me to build some new boxes. i suggested first cutting some large holes in the rear deck and placing nice transparent grills over the holes to allow bass to freely enter the cab. any thoughts/suggestions? it seems like he is pressuring the dickens out of the trunk but it is muffled in the cab.

David

ppia600 · 21st October 2011, 11:50 PM

Do it, problem solved.

Juancolchado · 25th October 2011, 07:52 AM

Cars with well sealed trunks are only good for SQ builds, if he truly wants to cut the rear deck of his car, go for it but note that he will be distorting his car, if he is serious about his bass he should invest in a cheap hatchback/suv type car, these are way easier to get high spl levels with half the effort of a trunk build but it is possible, once the rear deck is cut make sure the ports are firing through or face towards the cut area

theAnonymous1 · 25th October 2011, 09:13 AM

What about a bandpass design with both ports vented through the deck? That would nearly eliminate the trunk from the sound equation and possibly give better cabin gain. Might want to seal the trunk off even better with that approach.

ttimbo · 03:47 PM

Since you would be willing to cut into rear deck, maybe look into a set of IB subs mounted to rear deck using trunk as box.

Subs will be firing directly into cabin and wouldn't require as much power either, being IB subs.

Just a thought.

carshateme · 25th October 2011, 10:30 PM

Quote:

Originally Posted by Juancolchado

Cars with well sealed trunks are only good for SQ builds, if he truly wants to cut the rear deck of his car, go for it but note that he will be distorting his car, if he is serious about his bass he should invest in a cheap hatchback/suv type car, these are way easier to get high spl levels with half the effort of a trunk build but it is possible, once the rear deck is cut make sure the ports are firing through or face towards the cut area

Get a brunco

Brian Oshman · 26th October 2011, 02:36 AM

Don't just hack put the whole deck. This will compromise the integrity of the car. The Jetta is a unibody and removing the deck will weaken the structure of the car. You can cut a couple of holes in it but don't slice the whole thing out.

AKHeathen · 26th October 2011, 04:59 PM

band-pass vented through the deck.

20th October 2011, 01:23 AM	#1
blue934 diyAudio Member Join Date: Mar 2007	How to get trunk bass into cabin area? a friend has an 06'ish jetta with subs in the well sealed and insulated trunk. he is complaing about low spl and SQ and wants me to build some new boxes. i suggested first cutting some large holes in the rear deck and placing nice transparent grills over the holes to allow bass to freely enter the cab. any thoughts/suggestions? it seems like he is pressuring the dickens out of the trunk but it is muffled in the cab. David

21st October 2011, 11:50 PM	#2
ppia600 diyAudio Member Join Date: Jun 2007 Location: Louis y ana	Do it, problem solved. __________________ Don't worry... you can always turn the gain down!

25th October 2011, 09:13 AM	#4
theAnonymous1 diyAudio Member Join Date: Feb 2004 Location: Anonymityville	What about a bandpass design with both ports vented through the deck? That would nearly eliminate the trunk from the sound equation and possibly give better cabin gain. Might want to seal the trunk off even better with that approach. __________________ "If you don't like funerals don't kick sand in Ninja's face." - Ninja

25th October 2011, 03:41 PM	#5
ttimbo diyAudio Member Join Date: Oct 2009 Location: Earth	Since you would be willing to cut into rear deck, maybe look into a set of IB subs mounted to rear deck using trunk as box. Subs will be firing directly into cabin and wouldn't require as much power either, being IB subs. Just a thought. Last edited by ttimbo; 25th October 2011 at 03:47 PM.

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25th October 2011, 07:52 AM	#3
Juancolchado diyAudio Member Join Date: Oct 2011	Cars with well sealed trunks are only good for SQ builds, if he truly wants to cut the rear deck of his car, go for it but note that he will be distorting his car, if he is serious about his bass he should invest in a cheap hatchback/suv type car, these are way easier to get high spl levels with half the effort of a trunk build but it is possible, once the rear deck is cut make sure the ports are firing through or face towards the cut area

26th October 2011, 02:36 AM	#7
Brian Oshman diyAudio Member Join Date: Jul 2010 Location: Stewartsville, NJ	Don't just hack put the whole deck. This will compromise the integrity of the car. The Jetta is a unibody and removing the deck will weaken the structure of the car. You can cut a couple of holes in it but don't slice the whole thing out.

26th October 2011, 04:59 PM	#8
AKHeathen diyAudio Member Join Date: Apr 2011 Location: Anchorage AK	band-pass vented through the deck.

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