My Stereo Build: JL 10W7, 750/1 ; Focal Components; 920BT ; etc. . .

Well, this has been a very long ongoing project. And then with cold weather and frustration. I gave it a break. I think the worst thing I ever did was get it to a “working” state with the sub, once I had that going, I just gave up entirely on the rest of the work haha.

Anyhow, crosspost, but thought ya’ll might like it.

Ok guys, so I’ve always been a bit of a audio buff, but had told myself I wasn’t really going to get into doing anything on this car. Partly because I liked the RSN-E a lot and didn’t want to pay big bucks for a sound processor to extract the signal for aftermarket amplification and typically I am not a fan of large touch screens in cars when they come stock with very well integrated components, like the RSN-E. Well with the second round of the Dynavin group buy I decided I liked the idea of keeping an OEM look but getting to gain a lot of features as well as get some better audio options. I figured I could sell the RSN-E and break even, so it seemed like a good to suite my needs.

Well first off Trent was absolutely AMAZING to work with and highly recommend him for any audio needs he may be able to help with! After a long wait for my Dynavin (not due to Trent), I finally got to start playing around with it. Install wasn’t too bad, I just wish I’d seen his writeup as there are a couple basic things you need to check to make sure of while installing it. The Dynavin manual is pretty bleak, but Trent helped a lot to make sure all was good. There were a lot of things I liked about the Dynavin, and in general it seemed to have a very good touch screen as well as some great features. However, after prolonged use, I realized it just wasn’t fitting my needs. I felt some aspects of it were lacking and basically feel if you hadn’t had a RSN-E stock, then you’d probably really like this unit. But having the factory navigation, this just didn’t impress me as much as I had hoped for. Maybe I set the bar too high, or may be it’s just me. Whatever the case, Trent helped me so much through the whole process, and we agreed that it just wasn’t fitting my wants/needs.

At this point the itch to do aftermarket audio was in and I started looking at aftermarket headunits. First off, retail on some of these are stupid expensive. Like nice HD TV’s can be had for the price of these headunits, and being into hi-fi audio, they really aren’t even supplying that impressive of a signal or options when it comes to options in the home audio field. But all comes down to size, multiple features, navigation, integration, screen etc so they start to rack the bill up on them fast. I started leaning toward the Pioneer units simply due to I liked the interface of them. They have a new Avic-Z120BT which I really liked, but even after coupons/sales/rebate, I couldn’t justify the alomst $1k prce point not including all the install gear for it (cheapest I found after MIR was 800 I think, but then factor in about $150 in additional accessories to have running in your car). This lead me to it’s little brother the Avic-x920BT with a slightly smaller screen and some less options with the most damning being weaker preout signal voltages i.e. poorer signal in theory.

Aight, lets get the story moving, just wanted to give some preface.
Equipment picked to be used:
Focal 165VR through crutchfield (Retail $630, after discontinued in April and pricematched, $250 Shipped)
http://i278.photobucket.com/albums/kk89/mbgt72/Car%20Pics/Forum%20Photos/x091165VR-f.jpg

Pioneer Avic-X920BT (Retail $1200, pricematched close to SonicElectronix to $680, plus $100MIR through Pioneer so $580) Also bought HD radio, harnesses, iPod cable, & Faceplate, total to $980, but after $100 rebat $880)

http://i278.photobucket.com/albums/kk89/mbgt72/Car%20Pics/Forum%20Photos/h130AViC920-o_other.jpg

~60 sq ft of eDead sound deadener through Elemental Designs. (some coupon code for 15% off all the time so basically free shipping, total $130)

http://i278.photobucket.com/albums/kk89/mbgt72/Car%20Pics/Forum%20Photos/v1_logo.jpg

Elemental Design eDead V4TekLite (basically Acoustic Matting) 30sqft

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/v4_logo.jpg

50ft of JL 12gauge speaker cable (bought at local hi-fi store, total ~$60)
http://i278.photobucket.com/albums/kk89/mbgt72/Car%20Pics/Forum%20Photos/xcbcsc1225.jpg

Boston Acoustics GT-40 Amp (bought used on e46fanatics, but I think it has a fan issue b/c it’s making noise when on) But going to run bridged to front crossovers.
http://i278.photobucket.com/albums/kk89/mbgt72/Car%20Pics/Forum%20Photos/x065GT40-i.jpg

JL Audio Twin Amp Kit using 4 gauge wire (already installed)

3 pair of 20’ JL Audio RCA Interconnects

Custom Fiberglass sub box from Los Labs (thinking about trying to build my own again to better suite a W7)
http://www.loslabs.com/images/products/AUD1100-3_large.jpg

JL Audio W7 10"

http://images.sonicelectronix.com/images//236888/main/12w7.jpg

Rockford P500.2 500RMS bridged

http://www.rockfordfosgate.com/products/photos/P5002_1_l.jpg

Okay, so now that all that is out of the way, Lets get to the install. I already installed the W7 a while back, but like I said may build a new fiberglass box. I ended up building a new amp rack out of MDF board and attached inverted to the rear deck. I’ll get pictures of it up later. Originally I was using Beemer’s idea about back dooring the bose amp (and did run this for a while, WOW, the bose speakers LOVE having some real power to them, but still not anything like aftermarket) But after running new RCA’s and all I decided to run new speaker wire to the doors. Talk about a PITA, those molex plugs suck, and I had to get the dremel out to expand the bottom of that hole a little to help get the 12 gauge speaker wire through. Joey was a HUGE help with this part of my install as I couldn’t figure out for the life of me how to disconnect these plugs. He came to the rescue a couple of times asking where basic things were located or how to get them apart. But I hate german plugs, but am often amazed by them as well haha!

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0175.jpg

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Since we’re on the topic of doors as well, I sound deadened the inside of the door skin (as in part closest to the exterior door *panel, inner door skin, and outer door skin part. Basically, imagine if you were looking through the holes in the sheet metal where you can see the window mechanical parts, well the part straight through has sound proofing on it, then the both sides of the metal that the window regulator and speaker baffle attaches are fully sound deadened with a double layer on the outside part) as well as the acoustic matting on the outside of the door skin. This was a slow process but makes a world of difference. I double walled the outside door skin (and some of the inside) as the sound deadener I bought is a “thinner” version. Honestly this didn’t add that much weight. I think it’s something like .3-4lbs per sq ft and I bought 60 sqft of the deadener and have some left (but I’ll probably be using that in the trunk and possibly rear doors). The sound deadener is incredible and literally changes the way the doors even close. My BMW had full sound deadening in the cabin and it was amazing, but I wasn’t going that route on this car obviously.

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0184.jpg

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http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0170-1.jpg

The real part that took forever on the doors was fiberglassing pieces to cover the large holes in the door skin. The reason this is done is your door is basically a speaker cabinet, and having something with some sort of pressurization (doesn’t need to be complete and obviously there are drain holes in the bottom for water) allows the speaker to perform much much better. Typically you will see increased bass, tighter midrange, and overall crisper sound. This is all from the woofer as the tweeters are closed back and don’t benefit from this. I used fiberglassing from home depot, and then used a silicon to make a good seal and self tapping metal screws to provide an extra tight secure seal. This was a tedious process, but I felt like if I was doing everything else it’d be worthwhile to do this as well.

So FIBERGLASS:

Figure out your area:

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0163.jpg

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0167.jpg

And go:

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0162.jpg

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0172.jpg

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0171.jpg

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0162.jpg

Finished Effect:

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0166-1.jpg

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0173.jpg

Then starting to put the sound deadener around it:

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0168-1.jpg

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0167-1.jpg

After all the interior sound deadener was on and I had made the fiberglass parts, I reattached the window motor and cycled the windows to make sure nothing was getting in the way or restricting movement. All was good so sound deadening continued!

Then onto the speakers:
First off I am very impressed with these, especially for the money. I really was wanting to pick up some used Hertz MLK or Focal K2’s, but just couldn’t find any, and the pricepoint of $1000 for a set of components wasn’t something I could swallow. That’s partially why I wanted to go the extra mile on the door was to ensure I could get all that these speakers could give me. I previously had Focal Utopia’s in my BMW, but I had gotten them used and was able to sell them 2 yrs later and only loose $40 bucks on them. But I wanted to go a different route on this car.

Anyhow, I was thinking about fiberglassing some speaker baffles or making some MDF baffles, but at the end of the day, I decided I didn’t want to do the work and I just used the Bose Baffles. They were actually a little small diameter wise, but I just screwed down really tight and felt confident it was a good enough of a seal. I also felt that due to some of the curves around where the baffle attaches to the door, it would be best to use the oem for a good seal.

Oh, and soldering heat shrink is awesome again. I didn’t want to do just plain connectors, and my soldering wasn’t working too well on the speaker terminal so I thought this was a good route.

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0176.jpg

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0178.jpg

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http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0177.jpg

I believe this backing to work as a deflex pad does, therefore attempting to reduce backwaves reflecting off of the door back to the speaker. So I tried to make the smallest exit path I could for the wire to travel through.

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0182.jpg

If you’ll also noticed, I tried to load up the baffle with sound deadener as well. I read some on sound quality car forums that some people had used modeling clay to add mass (adding mass to the baffle can reduce vibration and ensure all the energy from the speaker is being translated directly to the enclosure and allow the cone to work as efficiently and crisply as possible), I wasn’t a big fan of this due to heat and felt that it might start to melt. However I felt that the weight of the sound deadener could provide some of the same benefits so I loaded up the baffle with the mass loader.

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0172-1.jpg

Well I feel like I could go on forever. But I guess that’s the main aspects to it. I’ll try to get some more pictures up when it’s really complete, but right now I’m still waiting on a replacement antenna adapter, ground loop isolator, and back up camera install stuff. I’ll try to get the amp rack pics too, but it’s nothin fancy.

So how does it sound? WORLDS of improvement over stock. How much is due to my enhancements vs speakers? I dunno, can’t tell ya. I just feel this was the “right” way to do it so this is what I was going to do. Like I said, this isn’t for everyone, but I love hi-fi sq and this was something to ensure I could get the best sound quality and enjoyment out of the pieces of equipment I had to use.

Breakdown on cost: * * * * * * * * * *Actual Cost * * * * * *MSRP
Speaker wire * * * * * * * * * * * * * * $60 * * * * * * * * * * *$60
Amp Kit (already had) * * * * * * * * **** * * * * * * * * * * ~$150 (2 interconnects included)
RCA Interconnects (only 1 extra) * **** * * * * * * * * * * ~$20
Sound Deadener & Matting * * * * * $130 * * * * * * * * * * *$130
Focal 165VR Component Spks * * * $250 * * * * * * * * * * $630
Boston Acoustics GT40 * * * * * * * *$125 * * * * * * * * * * $300 (discontinued now)
Rockford P500.2 * * * * * * * * * * * * $125 * * * * * * * * * * *$300
Los Labs Box for W7 * * * * * * * * * ***** * * * * * * * * * * *$175
JL Audio W7 Subwoofer * * * * * * * ***** * * * * * * * * * * *$699
Pioneer Avic-X920BT * * * * * * * * * *$590 (after MIR) * * $1200
Pioneer GEX-P20HD HD Radio * * * $100 * * * * * * * * * * *$100
Pioneer CD-IU50V iPod Cable * * * *$49 * * * * * * * * * * * $49
PAC SWI-PS * * * * * * * * * * * * * * * $69 * * * * * * * * * * *$69
PAC C2R-AUDI 05 (Dash Kit) * * * * $49 * * * * * * * * * * * $49
Antenna Adapter Included * * * * * * **** * * * * * * * * * * * ****
Fiberglassing Materials * * * * * * * *$70 * * * * * * * * * * * $70

Total: * * * * * * * * * * * * * * * * * * * $1620

Recouping money:
Sold RSN-E * * * * * * * * * * * * * * * ($780)
Sold XM Receiver * * * * * * * * * * * ($40)
Bose Subwoofer * * * * * * * * * * * * ??? not yet sold
I think busted CD changer * * * * * *??? not even listed

Total * * * * * * * * * * * * * * * * * * * *$800 (ouch, I thought I had done better than that haha)

Anyhow, thought I’d share as I’ve only found a couple writeups about audio in the B6/7 models beyond sub installs or basic speaker installs. And very little info on it with S4’s. Not really a full tutorial, but I’d be happy to explain more detail about any aspects, but figured I’d rather not waste everyone’s time to share info that no one may even care to hear. So, enjoy.

Oh, and those wondering about total time. . … umm yea, screw me! This originally was just a head unit install, and turned into this build. But Head unit I spent probably ~4 hours fiddling and adjusting stuff, and still waiting for components. Speakers, wires, sound deadening etc was spread out over 4 nights, but probably guess somewhere in the ~15hr ballpark. I like to fiddle and think about options, but I definitely didn’t intend for it to turn into such an ordeal but it’s close to done now. At least till I start that next fiberglass box haha!

Now updated with new sub build:

I should of had more pics during the install of this. But I build a new sidewall, then fiverglassed the gap and edges of the wood to the weather strip and floor. It was a bit of a pain, but no other way to give the cloth a rigid base rather than just being stretched. I’m pretty happy with the outcome of it.

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0348.jpg

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0349.jpg

More random pics:

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0166.jpg

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0170.jpg

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_6509.jpg

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http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_0164.jpg

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_6510.jpg

EDIT:

Well I gave the copper piping a try, thoughts, opinions, suggestions all appreciated:
(I’m probably going to change the cross brace, I just figured it needed an extra support and there is insulated wire inside each tube)

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_1165.jpg

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_1166.jpg

http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_1169.jpg

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http://i278.photobucket.com/albums/kk89/mbgt72/My%20Audi%20S4/Stereo/IMG_1172.jpg

Ohhh so that’s who you are off AZ. Love this build, I modeled my own build off of it ;D

Never use your windows again!!! i would hate to have a window regulator go with all that work in place. but sick install nonetheless.

hahahaha, I hadn’t thought of that. . . fingers crossed.

In reality though removing one of those panels isn’t bad as it’s just screws and silicon which can be re applied and I have enough left over deadening I can just pull off that section.

Luckily (I guess), I’ve already replaced both window regulators on this car b/c they crapped out. So I better be good for a while longer.