VW Jetta (a4) owners. Q on box size

[garrettpf 10+ year member]

I have a trusty old 2000 Jetta (which is the A4 body) TDI. What I would like to know if the A4 Jetta owners have come up with the proper box size compared to specs. I have noticed that with the seats up the Jetta does not allow too much base out of the trunk (not like my A3 Golf did). I am not a boomer and run a pair of a/d/s/ S10's for SQ. I am getting a McIntosh MCC302 and would like to build a box with 4 a/d/s/ S10's. If I had a dollar for every box I have built for my Golf and my S-10 pickup, I would be a rich man. Needless to say, I would rather not spend too much time building box after box trying to get the right size for the car with the subs I am using.

So, if you guys could chime in and let me know if you found a bigger box was better or smaller then what was spec'd and for what freq. I am sticking with sealed chambers for each sub as the S10's do not like porting too much and are not made for booming.

If there are any old die hard a/d/s/ fans of old that could suggest what would be best for 4-S10's, that would work for me too.

for those that want to bash me for my old school set-up. well go ahead i guess //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif. For the few sound off's I have been in, I always finished with a top in the SQ. That is all that matters to me and infact, the only reason I ever entered any comps.

McIntosh MX406 (going to try DEHP880PRS for shizatsngiggles)

a/d/s/ 642ix x-over

a/d/s/ PQ20 front (200X2)

a/d/s/ PQ10 rear (80X2)

Mcintosh MCC302 for subs

Alphasonik PMA150HCA for rear midbass

a/d/s/ 336ix fronts

a/d/s/ 320is rears (back deck)

a/d/s/ S-10 (x4)

a/d/s/ S-8 rear midbass (rear doors)

Click to read more...

 

[05gliguy 10+ year member]

I have a jetta with the same body style, I have a 5.37 cu ft box with 2 12's in the trunk... 36"wide 15"tall 21" deep. After building several boxes I found that, that box is the biggest you can get in there.

 

[azbass 5,000+ posts]

most of the nicest sounding systems iv build for were in jettas, audi A4's and there is plenty of bass that enters the cabin. with a sealed/vented rear fireing boxs

 

[req 5,000+ posts]

i did a type r box for a mk3 that was about 3 cubes port+subs firing back and it got plenty loud.

if it was my jetta. id cut a hole in the rear deck for a pair of 12's IB and call it a day //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[azbass 5,000+ posts]

psssh IB weirdos

 

[garrettpf 10+ year member]

Hey azbass, was wondering when you where going to reply. Do you have a chip in your car yet //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

The only problem I have is the effing spare. I live in the middle of nowhere and I would hate to be with out a spare, plus i need room for 4 amps, x-over and cap. I did cut the rear carpet so the equipment can go on the left side of the trunk and then I could remove the sub box.

Now, with 4 a/d/s/ S10's i was thinking of building two seperate boxes which would make it easier to remove or slide forward to get at the spare.

I also need to keep in mind wieght. I drive a TDI and really like the 50mpg I get. adding wieght is not a good thing obvisouly. Is there any marine type board out there that is honeycombed? I will have to check at the local boat builders i guess. We have Burger Boats in Manitowoc which builds 150' custom yachts.

Lastly, with 4-10's they would pretty much have to fire up (or on angles). I will play with the 2-10's I have now and try moving the box facing back once to see what diff that makes as stated by gli guy. I thought about making a box with push pull but did not want to waste the time. maybe I will do it with the box I have now since it will hit the curb anyway //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Thanks for the help so far. Still waiting for some old school '80s a/d/s/ guys to chime in //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[req 5,000+ posts]

i have a giac chip //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[05gliguy 10+ year member]

I have REVO stage 2

 

[garrettpf 10+ year member]

I helped to start UPsolute in the US. I was the number two man for the first 4 years. then an argument ensued over Porsche tuning and i got screwed. When we first started I would get calls saying, "you chipped me years ago...". Um, I am garrett from UPsolute not THE Garrett from GIAC //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif I am not with UPsolute anymore.

and back to topic, I also like my bass tight not mushy (hence forth 10" paper cones //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif ). So i dont know that a bigger box would help unless the trunk size has someting to do with it.

 

[req 5,000+ posts]

size of cone has nothing really to do with the sound quality and upper frequency extension of a driver. its got to do with a ton more crap than that.

i have a pair of IDQ15's and they hit "tight" like people explain how "10's hit".

it all depends on box volume and driver choice.

what drivers do you currently own?