Electronics Wired up? Everyone's got some sort of electrical modification. let's hear about it here.

12" Subwoofer up front!

Thread Tools
 
Search this Thread
 
Old Aug 11, 2007 | 03:02 AM
  #1  
csuflyboy's Avatar
Thread Starter
|
1st Gear
Joined: Feb 2006
Posts: 159
From:
Default 12" Subwoofer up front!

As some of you might remember, I used to have a pair of 15"s mounted on the rear deck - known as "Infinite Baffle". There are some key advantages of this design, however, I wanted to get 100% of the musical energy coming from where it's supposed to - infront of the listeners! This meant finding about 0.8 cubic feet for the enclosure, and a shallow subwoofer that could easily be hidden - "stealth". I wouldn't have a subwoofer sticking out, decreasing the footwell area. There are several shallow subwoofers - some sounding better than others, and I've selected the Altomobile Falstaff 12".

Audi was kind enough to fill in the cavity where the pedals are in the European version with foam on the US model. The floor is also filled in with about 3 inches of foam or more. I've removed ALL this foam, applied sound dampening materials (Dynamat), moved the wires, and started fiberglassing...







This is the bottom/back of the enclosure - conforming to the floor and firewall/wheel well surfaces. Position the baffle (surface the subwoofer will be mounted to), and remove these pieces from the car. Stretch fleece over the baffle and attach to the hardened fiberglass to complete the enclosure. Be sure to add dynamat and foam to the top of the enclosure - as it will vibrate with the bass, and if your heels are resting on the floor, they'll tell your brain that the music's coming from the floor - NOT what you want...













The carpet's been cut, and I'm currently making the grille to fit over the subwoofer. It looks totally stock, and sounds EXCELLENT! More to come...
 
Old Aug 11, 2007 | 02:09 PM
  #2  
A4 Effort's Avatar
Senior Member
Joined: May 2007
Posts: 977
From: Mt. Airy, MD
Default RE: 12" Subwoofer up front!

Looking good - can't wait to see the finished product. Are you still going to run subs in the deck as well? If so, won't the 12" up front and the subs in the deck cancel each other out?
 
Old Aug 11, 2007 | 02:48 PM
  #3  
csuflyboy's Avatar
Thread Starter
|
1st Gear
Joined: Feb 2006
Posts: 159
From:
Default RE: 12" Subwoofer up front!

I'm no longet using the pair of 15"s; just th 5 speakers up front. The kickpanels and custom dash are pretty wild too! ;-)
 
Old Aug 11, 2007 | 07:08 PM
  #4  
A4 Effort's Avatar
Senior Member
Joined: May 2007
Posts: 977
From: Mt. Airy, MD
Default RE: 12" Subwoofer up front!

Eww - show me the kickpanels. Would you be willing to make an extra set?
 
Old Aug 12, 2007 | 04:06 PM
  #5  
csuflyboy's Avatar
Thread Starter
|
1st Gear
Joined: Feb 2006
Posts: 159
From:
Default RE: 12" Subwoofer up front!

These are a pair of ULTRA high performance 7"s with some equally impressive tweeters. I've got line-of-sight to both domes when seated. They're mounted to 1.5" thick Finnish birch (from Finnland - yes, it matters). Behind the midbass is a Deflex-pad. The lower 1/2 of the dash is currently being fabricated. It's a wooden skeleton-frame covered in metal speaker mesh, then wrapped in grille cloth. It's the same shape as the factory dash, but acoustically transparent.









 
Old Aug 13, 2007 | 08:55 PM
  #6  
A4 Effort's Avatar
Senior Member
Joined: May 2007
Posts: 977
From: Mt. Airy, MD
Default RE: 12" Subwoofer up front!

Crazy man. Can't wait to see it finished. Did you have to move all the wires in the kickpanel back towards the firewall, or were they already like that?
 
Old Aug 14, 2007 | 07:21 PM
  #7  
csuflyboy's Avatar
Thread Starter
|
1st Gear
Joined: Feb 2006
Posts: 159
From:
Default RE: 12" Subwoofer up front!

I had to move a TON of wires...and it sucked. Audi (like many others) use plastic phenolic connections that take up a ton of space - so I cut and spliced them out of the vehicle. I should point out that I didn't do any of this crap for the tutorial I wrote, nor the 2nd generation kickpanels that got me 2nd place in sound quality at last year's USACi World Finals...
 
Old Sep 26, 2008 | 03:30 PM
  #8  
csuflyboy's Avatar
Thread Starter
|
1st Gear
Joined: Feb 2006
Posts: 159
From:
Default

Here are some in-work, and 95% done pictures. I'll post some more later. I think the amplifier install is pretty trick - if I do say so myself...

Name:  DSC01826-1.jpg
Views: 613
Size:  60.1 KB
Name:  DSC01813.jpg
Views: 590
Size:  40.3 KB
Name:  DSC01814.jpg
Views: 556
Size:  32.6 KB
Name:  DSC01815.jpg
Views: 624
Size:  30.1 KB
Name:  DSC01816.jpg
Views: 641
Size:  50.7 KB
Name:  DSC01817.jpg
Views: 622
Size:  51.8 KB
Name:  DSC01821.jpg
Views: 545
Size:  52.4 KB
Name:  DSC01822.jpg
Views: 558
Size:  54.2 KB
Name:  DSC01823.jpg
Views: 567
Size:  46.4 KB
Name:  DSC01845.jpg
Views: 576
Size:  36.6 KB
 
Old Sep 26, 2008 | 03:37 PM
  #9  
csuflyboy's Avatar
Thread Starter
|
1st Gear
Joined: Feb 2006
Posts: 159
From:
Default

Here's the amplifier's mounted to the rear deck. The tops of the amplifiers are visible through the rear window. The two amplifiers are mounted to a board using a piano hinge, that allows me to swing them down into the trunk for servicing / adjusting. Note the two fans to blow cool air from the trunk onto the heatsinks. Oh..and the red cold-cathode lights for the bling factor...

Name:  DSC01844.jpg
Views: 611
Size:  46.6 KB

Name:  DSC01842.jpg
Views: 622
Size:  35.3 KB
Name:  DSC01841.jpg
Views: 600
Size:  34.1 KB
Name:  DSC01836.jpg
Views: 580
Size:  38.4 KB
Name:  DSC01835.jpg
Views: 582
Size:  22.9 KB

The 5F CAP mounted to the OEM Bose amplifier bracket:
Name:  DSC01839.jpg
Views: 555
Size:  51.8 KB
Name:  DSC01838.jpg
Views: 672
Size:  57.0 KB

Sanding...sanding...sanding the new rear deck:
Name:  DSC01837.jpg
Views: 567
Size:  32.8 KB

I'm sure I have some finished pics...I'll look for them - or take some now....
 
Old Sep 28, 2008 | 06:43 PM
  #10  
98 a4's Avatar
Senior Member
Joined: Sep 2007
Posts: 109
From:
Default

Hey man thats a very clean install...did you paint the wood panels or use someting else?
 



All times are GMT -4. The time now is 01:50 AM.