Anybody have a Honda Civic enclosure configuration they liked best?


Kybasshead75

CarAudio.com Well Known
Sep 11, 2020
111
6
Ky
Got a 2007 Civic si coupe thinking about doing a ported box forward firing sealed off or subs forward, ports through rear deck firing onto glass.
All opinions appreciated, if I build into trunk I can fit about 6cubes n there and wanna go with 312s or 215s.
 

THATpurpleKUSH

Smoke weed everyday
10+ year member
Sep 30, 2009
7,881
664
Slums of the Shaolin
The opening from the trunk into the cabin is very small and is sort of a bottle neck for getting bass into the cabin. I would seal the trunk and forward fire into the cabin with 2 10s in a 4th order if you're willing to give up the entire trunk.

My ex had a 06 coupe. That car does not have enough volume to correctly do 3 12s or 2 15s.

I'd say 2 12s at most with a conventional ported enclosure or compact 4th order.
 
OP
K

Kybasshead75

CarAudio.com Well Known
Sep 11, 2020
111
6
Ky
The opening from the trunk into the cabin is very small and is sort of a bottle neck for getting bass into the cabin. I would seal the trunk and forward fire into the cabin with 2 10s in a 4th order if you're willing to give up the entire trunk.

My ex had a 06 coupe. That car does not have enough volume to correctly do 3 12s or 2 15s.

I'd say 2 12s at most with a conventional ported enclosure or compact 4th order.
I agree with sealing off and firing forward as well, a box that will fit after made into the trunk can be about four cubes Max if I build the box into the trunk I can get six cubes which is barely enough to run three 12s or 215s which is okay because I run small boxes for less group delay and better punch.
I was wanting to stick with ported and thought the ports hitting the glass would get me a few more decibels.
I know it would be a lot more work to do the building maybe not worth the extra two cubic feet
 
OP
K

Kybasshead75

CarAudio.com Well Known
Sep 11, 2020
111
6
Ky
The opening from the trunk into the cabin is very small and is sort of a bottle neck for getting bass into the cabin. I would seal the trunk and forward fire into the cabin with 2 10s in a 4th order if you're willing to give up the entire trunk.

My ex had a 06 coupe. That car does not have enough volume to correctly do 3 12s or 2 15s.

I'd say 2 12s at most with a conventional ported enclosure or compact 4th order.
 
OP
K

Kybasshead75

CarAudio.com Well Known
Sep 11, 2020
111
6
Ky
I have seen some very loud installs with a band pass ported through the rear deck up against the glass and have considered doing two tens ported in the rear deck as well
 

Jeffdachef

Gunz That Turn on Nunz
Feb 5, 2013
18,470
772
South Coast Metro, CA
I agree with sealing off and firing forward as well, a box that will fit after made into the trunk can be about four cubes Max if I build the box into the trunk I can get six cubes which is barely enough to run three 12s or 215s which is okay because I run small boxes for less group delay and better punch.
I was wanting to stick with ported and thought the ports hitting the glass would get me a few more decibels.
I know it would be a lot more work to do the building maybe not worth the extra two cubic feet
Not gonna work well unless its a 4th order or 6th order box firing up the rear deck and youll need to gut out that rear deck and reinforce plus airtight seal that. Normal ported boxes in that configuration will have literally negative amounts of bass. Again you only realistically have room for two 10s in if you want to do the rear deck option and two 12s for the trunk wall. Cramming a lot of woofers into a tiny civic trunk wont get you loud at all. It'll make you look like a joke in bass meets when a pair of 8s destroy you lol. Space makes bass and you need room For batts and amps. Unless you wanna kill your amps by mounting them on the sub box.
 
  • Thanks
Reactions: THATpurpleKUSH
OP
K

Kybasshead75

CarAudio.com Well Known
Sep 11, 2020
111
6
Ky
Not gonna work well unless its a 4th order or 6th order box firing up the rear deck and youll need to gut out that rear deck and reinforce plus airtight seal that. Normal ported boxes in that configuration will have literally negative amounts of bass. Again you only realistically have room for two 10s in if you want to do the rear deck option and two 12s for the trunk wall. Cramming a lot of woofers into a tiny civic trunk wont get you loud at all. It'll make you look like a joke in bass meets when a pair of 8s destroy you lol. Space makes bass and you need room For batts and amps. Unless you wanna kill your amps by mounting them on the sub box.
Hmm sounds good to me. I was thinking subs and port forward would be the easiest to do and would be good hitting you right in the back!
I'm still going to seal up that rear deck and trunk really tight to stop the back wave.
The two tens in a box on the rear deck w subs n port hitting the glass would sound good too I would say. The two 12s directly behind you would probably give you better impact tho.
 
OP
K

Kybasshead75

CarAudio.com Well Known
Sep 11, 2020
111
6
Ky
Not gonna work well unless its a 4th order or 6th order box firing up the rear deck and youll need to gut out that rear deck and reinforce plus airtight seal that. Normal ported boxes in that configuration will have literally negative amounts of bass. Again you only realistically have room for two 10s in if you want to do the rear deck option and two 12s for the trunk wall. Cramming a lot of woofers into a tiny civic trunk wont get you loud at all. It'll make you look like a joke in bass meets when a pair of 8s destroy you lol. Space makes bass and you need room For batts and amps. Unless you wanna kill your amps by mounting them on the sub box.
I'm going with a compact lithium battery setup and I can fit the amps on panels on the sides of the trunk. I could never understand why people put amps on their enclosures lol!
Wasn't really wanting to make a competition vehicle just a musical daily driver.
Either way I need to wall off behind the seats and the rear deck to stop the back wave and pressure loss or put a back firing ported box up against the back of the trunk like everybody else does but I hate those rattles and letting the seats down so bass can pass through.
I think the two tens ported sealed off facing the rear glass would probably sound the best.
 

shredder2

CarAudio.com Elite
Nov 19, 2017
2,656
453
Az
Either way I need to wall off behind the seats and the rear deck to stop the back wave and pressure loss or put a back firing ported box up against the back of the trunk like everybody else does but I hate those rattles and letting the seats down so bass can pass through.
This makes NO sense to me... maybe how it's written?
I think the two tens ported sealed off facing the rear glass would probably sound the best.
In a trunk?.. once again... Unclear or written wrong. How you gonna seal off the trunk and deck then face a ported box off the rear glass in a coupe?

*Edit * Upfiring enclosure integral to the deck?.. well... good luck charlie.
I suppose it's doable
 
OP
K

Kybasshead75

CarAudio.com Well Known
Sep 11, 2020
111
6
Ky
This makes NO sense to me... maybe how it's written?


In a trunk?.. once again... Unclear or written wrong. How you gonna seal off the trunk and deck then face a ported box off the rear glass in a coupe?

*Edit * Upfiring enclosure integral to the deck?.. well... good luck charlie.
I suppose it's doable
Apologize for the unclear description there I was comparing a regular enclosure against the back of the trunk lid like everyone else does( I don't really like having all those rattles) vs a sub forward sealed from trunk( to stop the back wave that results in cancellation) box with ports firing through rear deck onto the back glass so I don't have to cram port and sub onto same face also want the hatchback effect of the glass being loaded with ports too.
 
OP
K

Kybasshead75

CarAudio.com Well Known
Sep 11, 2020
111
6
Ky
This makes NO sense to me... maybe how it's written?


In a trunk?.. once again... Unclear or written wrong. How you gonna seal off the trunk and deck then face a ported box off the rear glass in a coupe?

*Edit * Upfiring enclosure integral to the deck?.. well... good luck charlie.
I suppose it's doable
Yeah the upfiring enclosure integral to the deck is likely to sound the best and cleanest. I can gut the rear deck and do a frame to reinforce it and bolt in the enclosure as a receiver. Every hatchback I've heard with the subs hitting the glass was very impressive I'm tempted to go for that effect
 

Jeffdachef

Gunz That Turn on Nunz
Feb 5, 2013
18,470
772
South Coast Metro, CA
Yeah the upfiring enclosure integral to the deck is likely to sound the best and cleanest. I can gut the rear deck and do a frame to reinforce it and bolt in the enclosure as a receiver. Every hatchback I've heard with the subs hitting the glass was very impressive I'm tempted to go for that effect
Except this is a trunk. You need to do a 4th order band pass or the sound waves from the subs will travel around in the trunk and causes massive cancellation resulting in negative bass, ive had to fix quite a few of these setups so seriously its a horrible idea. Imagine all this work and your door speakers have louder bass. Thats what cancellation is. Only way to port up is to fully do a 4th order enclosure not a ported enclosure.
 
OP
K

Kybasshead75

CarAudio.com Well Known
Sep 11, 2020
111
6
Ky
Except this is a trunk. You need to do a 4th order band pass or the sound waves from the subs will travel around in the trunk and causes massive cancellation resulting in negative bass, ive had to fix quite a few of these setups so seriously its a horrible idea. Imagine all this work and your door speakers have louder bass. Thats what cancellation is. Only way to port up is to fully do a 4th order enclosure not a ported enclosure.
 
OP
K

Kybasshead75

CarAudio.com Well Known
Sep 11, 2020
111
6
Ky
Thank you for clarifying that, i was wanting to hear from someone who had seen it done before. I want to do this build correctly!
I didn't think there would be a rear wave problem if I fired the subs forward sealed off from the trunk with the ports up through the rear deck that way. ( It would be like a big home speaker in the very back of my car with the port facing the back window)
With the subs facing to the trunk lid and ports through rear deck I could see how that would result in cancellation.
Most of the time simple is the best with subs n port forward sealed off from trunk everything would be hitting me in the back which is how I like it and less risk of cancellation issues since sub and Port will be on same face right behind me.
 
OP
K

Kybasshead75

CarAudio.com Well Known
Sep 11, 2020
111
6
Ky
Thank you for clarifying that, i was wanting to hear from someone who had seen it done before. I want to do this build correctly!
I didn't think there would be a rear wave problem if I fired the subs forward sealed off from the trunk with the ports up through the rear deck that way. ( It would be like a big home speaker in the very back of my car with the port facing the back window)
With the subs facing to the trunk lid and ports through rear deck I could see how that would result in cancellation.
Most of the time simple is the best with subs n port forward sealed off from trunk everything would be hitting me in the back which is how I like it and less risk of cancellation issues since sub and Port will be on same face right behind me.
I will be using a small but powerful lithium battery and I can figure out how to get the amps into the trunk panels in small boxes with opposite direction computer fans on the sides to cool them( neato Steve Meade trick) and have some space where the spare tire is as well.
Still looks like 2 twelves, or 1 fifteen is what will fit- 4-5 cubes max.
I've thought about getting an epic 15 like the SSA evil but Id probably be happier with more coil and surface area from two 12s.
 

hispls

CarAudio.com Veteran
10+ year member
Sep 10, 2009
11,290
425
Central Maine
I've thought about it but I need the car for delivery purposes or else I would lol
Doing a wall build you'd still have most of the trunk, possibly all of the trunk if you can do lithium and amps in the spare tire well... it's a big spare tire well in a Civic.
 

Jeffdachef

Gunz That Turn on Nunz
Feb 5, 2013
18,470
772
South Coast Metro, CA
if you are using your car for delivery, be prepared to lose a **** ton of gas mileage with heavier use on your breaks and overall vehicle wear and tear. I would highly suggest using pine or birch plywood over MDF, saves you half the weight on the box. You can even go with Neodymium motors on the subs to save half the weight on subs from the FI btl neo line.
 

Create an account or login to comment

You must be a member in order to leave a comment

Create account

Create an account on our community. It's easy!

Log in

Already have an account? Log in here.


Users Who Are Viewing This Thread (Users: 0, Guests: 2)



Latest posts

Newest threads

Latest classifieds