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Old 06-17-2011, 06:56 AM   #1
Drago77
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JL Audio Prototype Vert Stealthbox & system

Had this posted on my build thread, but it didn't seem to get much response, and believe me vert owners- this needs to be known!

OK, got her back from JL Audio last week! Let me tell you, above all- what a class-act company! Absolutely amazed at every aspect of my dealings with JL, including the follow up!

The deal: they get my car to design a stealth-box for the vert's, and rights to photo and use images for advertising, I get a complete "Slam-Pack" system, installed, free!

This consisted of:

-Dual Stealthbox sub-enclosures, each containing a TW5 slim 10" subwoofer (less than 2.5" thick)

-C5 replacement door speakers

-Customized capacitor for stock tweaters

-XD 700/5 amp

Complete wiring/installation/brackets/harnesses to include a custom bass level knob under the steering wheel.

All together the process took a little over 3 weeks. Extreme Performance, proud sponsors of Camaro5 (and Treasure Coast Camaro 5) arranged the deal and transported my vehicle via flatbed to JL Audio. Upon completion, I went to personally pick up my car. I was given a full tour of the facility, demonstrated how everything was made from prototype to shipped product, what a process, and what an excellent facility!

Finally- my car! (I will be adding more pix as I take them over then next few days- components are tucked away in there good, not easy to get good pix!)

FIT- Inside, everything looked completely stock, minus the absence of the Boston Acoustic logos on the speaker grilles...(lol Bill!) Trunk- at first glance, you don't see a thing. However, if you look low and deep into the trunk, under the safety tarp that seperates the trunk from the recessed top, you can see a "U" shaped box in there. The concave in the center allows for some access to what little space there is under the tarp, while the stealth boxes hold the speakers, downward firing in the apex of the curve. The amp, was mounted in the spare tire compartment, next to the battery, litterally taking up absolutely zero usable space.

SET-UP- The JL amp is running the front speakers and the subs. Meanwhile, the factory amp, is powering the rear passenger factory speakers and dash speaker, the rear factory (worthless) sub was removed.

SOUND- Let me preface this by saying I've never owned a professionally designed, installed system before. Initially, using their demo CD, I was completely speechless. The sound was crystal clear and the bass, a tight, pounding that you could feel as well as hear, a far cry from the factory "Premium" system. I noticed a very distinct "stage" presence to the system with the vocals phased toward the front center of the car, with the music on the sides in perfect stereo and the low end from behind. Took some getting used to that type of seperation in a car, but wow.

The bad... then I took out the demo and put in an MP3... I never realized how much quality is lost in compressed files until then. The bass was lacking and the highs seemed flat and muddy. I spoke with JL and they're going to custom tweak it to my liking next week.

THE GOOD- in the mean time, I did a little snooping and discovered the gain settings... the bass was set at 2.5/10, while the highs and mids were at 3.5/10. Well, a little tweak to the radio EQ and bumping the bass up one level- and magically, its a SERIOUSLY BAD ASS SYSTEM on any music format! Absolutely amazing sound!

I litterally drove around aimlessly for hours tonight listening to the music!

THANK YOU JL AUDIO!

JL updated their website in Nov to include this:
http://www.jlaudio.com/product/54216...tible_%2710-Up

(Pix- first 3 are courtesy of JL Audio during the install, and depict the custom tweeter capacitor, the replacement door speakers, and the amp placement- (mind you, none of the items are in their neatly packaged, final state) and finally the mold used to create the stealth box to give you an idea of it's shape. The remaining pix are of the installed stealth box in the trunk. Plz bare with the grainy cell-phone pix... more to come next time I have it opened up.

Overall- it is a KILLER, comlpete system! I can't begin to explain the night-and-day difference! There's a little sound level lost when retracting the top, but virtually no "muffled" sound. JL installed a custom level adjustment knob under the steering wheel to accomodate any "on the fly" or song-by-song adjustments needed. No more straining to hear it on the highway with the top down, "20" is more than adequate at 80mph cruising speeds now!
Attached Images
              

Last edited by Drago77; 11-23-2011 at 03:15 PM. Reason: Added updated (hi-res) pictures
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Old 06-17-2011, 07:44 AM   #2
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Very cool. Free is one of my favorite four letter words!
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Old 06-17-2011, 09:15 AM   #3
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Looks cool. Looks like the box takes up alot of space. What is the rated freq response of the sub box and how many watts can it handel. Will this be for sale in the future?
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Old 06-17-2011, 11:48 AM   #4
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I DON'T have all the specs- any of them, actually... sorry.

It really DOESN'T take up usable space. The box is only about 6-8" thick and each "half" is crescent shaped so it hugs the walls of the trunk. At the closet point, it reaches about 4" from the tarp thatseperated the top and the trunk. So technically you do lose some space, but not alot. I used to store folding chairs under there for trips, meets etc... that I wont be able to do anymore. But overall, for the sound and the capability, I don't miss it! There's still a pretty large opening in the center that reaches about 14-16" deep into the trunk that you can fit bags, shoeboxes etc in, so it doesn't completely wipe out that area. I'll try to take some better pix, the above were from my phone
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Old 06-17-2011, 01:02 PM   #5
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Ok thanks. It looks factory. I bet it sounds great. Ya the factory system is weak point in this car.
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Old 06-17-2011, 06:22 PM   #6
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Nice job from JL, but i would definitely replace the stock tweeters to something nice, this increases sound quality extremely for about $80,- .....

Selecting the right woofer (freeair parameters) would give the same bass performance without loosing any trunk space. I went this way and am happy (did not believe, that a sub without a box will work)....

I am finishing my project by tomorrow:
http://www.camaro5.com/forums/showthread.php?t=153137
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Old 06-17-2011, 08:16 PM   #7
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Originally Posted by zachi3 View Post
Nice job from JL, but i would definitely replace the stock tweeters to something nice, this increases sound quality extremely for about $80,- .....

Selecting the right woofer (freeair parameters) would give the same bass performance without loosing any trunk space. I went this way and am happy (did not believe, that a sub without a box will work)....

I am finishing my project by tomorrow:
http://www.camaro5.com/forums/showthread.php?t=153137
They kept the BA tweeters but changed something with them- I really dint know alot about that stuff anymore, but they do sound pretty good.

As for replacing the sub- they said they tried simply replacing the factory sub with a JL, but the location had too many issues to allow any speaker type to function properly. I thought it was a cool central location myself, but they're the experts and had full reign to work it out w my car and choose the stealth box option. I thought the upgraded "factory" BA stereo was decent, a little quiet but decent... its AMAZING the difference I bear now in mine versus my friends Camaros. They really did a great job both optimizing space Nd putting out an incredible sound!
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Old 06-18-2011, 08:54 AM   #8
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How/when will this be available to to other convertible owners??
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Old 06-18-2011, 03:02 PM   #9
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Originally Posted by CooG View Post
How/when will this be available to to other convertible owners??
Start checkin the JL Audio website... id imagine pretty soon, if not already!
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Old 07-04-2011, 07:12 PM   #10
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Seems odd they would use the TW5 sub. It's a 13" sub and retails for $599./ea. 6 to 8" is enough for the usual sub they use in a stealthbox, the W3. Not to call bullshit but I have to think they're using a pair of 10W3's. Then again the C5 speakers in the door also retail in the $500 range. Which makes me wonder why they wouldn't use the HD900amp which is just as small as the XD700 yet puts out almost twice as much power. Using those top of the line speakers it almost doesn't make sense to not use the better amp. I also didn't know the C5 could be converted into a coaxial like their C2 unless they are just using the C5 woofer. Boston also makes some of the best car speakers on the market so I can see why JL wouldn't bother to replace the tweeters. I still can't see them putting that stealthbox on the market @ $2000. I could very well be wrong but I was just trying to tie together what I saw as inconsistencies. Congrats to you on the system. JL Audio systems are the best of the best.
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Old 07-04-2011, 10:40 PM   #11
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Quote:
Originally Posted by Gibroni View Post
Seems odd they would use the TW5 sub. It's a 13" sub and retails for $599./ea. 6 to 8" is enough for the usual sub they use in a stealthbox, the W3. Not to call bullshit but I have to think they're using a pair of 10W3's. Then again the C5 speakers in the door also retail in the $500 range. Which makes me wonder why they wouldn't use the HD900amp which is just as small as the XD700 yet puts out almost twice as much power. Using those top of the line speakers it almost doesn't make sense to not use the better amp. I also didn't know the C5 could be converted into a coaxial like their C2 unless they are just using the C5 woofer. Boston also makes some of the best car speakers on the market so I can see why JL wouldn't bother to replace the tweeters. I still can't see them putting that stealthbox on the market @ $2000. I could very well be wrong but I was just trying to tie together what I saw as inconsistencies. Congrats to you on the system. JL Audio systems are the best of the best.
Definitely no B.S.- however the speaker type (especially the subs) could have changed, my note taking could have been bad, etc... in all honesty, I'm not 100% sure what subs are in there... basically, they took my car and after week 1, I got a call with what they were putting in, then the first set of pix posted came from JL as they were building/installing. Now, I tried taking notes on what they said was going in; that may have changed, or I may have written something wrong- my car was at their facility another 2 weeks from that call. I've been out of the stereo game for about 10 years... that being said, if you look at the 2nd pic- that clearly shows the door speaker and the 3rd, in the top right, you'll see the sub they modeled the boxes around. I know for sure they used 2- 10" subs, both were the compact, 2.5" thick which I believe they said were TW5- could be wrong, not betting my life on it...dont even know if it was a prototype sub just for this application...I know they wanted my car pretty badly to build it, and in the end, the sound is AMAZING!

So I could be wrong on some of the model #s, that's why I tried to post the best pix to illustrate everything. The stealth boxes are actually mounted into the car, so I'm not disassembling them just for pix. Keep an eye out for the updated JL catalog.....the white Vert modeling the new stealth box should look very familiar!

update: I did a little research online since I read/responded, here's the link to the 3D video rendering JL did:

http://www.hs.facebook.com/video/vid...70522&comments

And, the subs are 10W1v2's, per the video- so yeah, things may have changed, or I miswrote something, or it's changed since the vid was made... dunno. Definitely doesn;t look like what was being fitted in the pic... but the vid gives a pretty good look at the 360 tour of the box. Final product is carpeted though in black (unless that's just for my prototype) Hope that clearifys aa little

Last edited by Drago77; 07-04-2011 at 10:58 PM.
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Old 07-14-2011, 09:24 AM   #12
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It's freakin' awesome is what it is. I think the fronts are C2's or C3's since they convert to coaxial. I found the JLAudio Slampack for the Kia Soul online that sold for about $1500. When they finally release the Camaro convertible version it should fall into that price range. I'm hoping $2000 installed at a local JL Audio dealer. If and when I get my Camaro 'vert that's what's going in it. You're one lucky dude.
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Old 07-14-2011, 09:48 AM   #13
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Quote:
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It's freakin' awesome is what it is. I think the fronts are C2's or C3's since they convert to coaxial. I found the JLAudio Slampack for the Kia Soul online that sold for about $1500. When they finally release the Camaro convertible version it should fall into that price range. I'm hoping $2000 installed at a local JL Audio dealer. If and when I get my Camaro 'vert that's what's going in it. You're one lucky dude.
Thanks man, and your right-it is awesome and I am lucky! The sound is simply amazing! I'm still in awe everytime I listen to a song I hadn't heard yet!
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Old 08-06-2011, 08:12 PM   #14
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I saw on facebook that the vert stealthbox is supposed to come out soon I heard its supposed t have two 10 inch w1s
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Old 08-07-2011, 11:54 AM   #15
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Originally Posted by Drago77 View Post
As for replacing the sub- they said they tried simply replacing the factory sub with a JL, but the location had too many issues to allow any speaker type to function properly.
Steve at SubThump seems to think differently on this subject and the factory location.

Finally something positive happened to your ride!

-Funk
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Old 08-07-2011, 12:41 PM   #16
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Steve at SubThump seems to think differently on this subject and the factory location.

Finally something positive happened to your ride!

-Funk
There's been a lot of REALLY good with the car, but I think I'm just cursed... for me the saying goes "every silver lining has a cloud " instead of the other way... case in point- the capacitor they used didn't work...just had to order new tweeters..so now the whole system cost me a whopping $100, lol! But its just the point... always something

I was a little dissappointed when I was told the factory bass location wasn't usable, I thought it was a clever spot. However, I'm no expert and JL had full reign to do what they needed... dunno the exact reasonings why it "wouldn't work", but the stealth box does sound BAD ASS! And takes minimal space.
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Old 08-09-2011, 05:31 PM   #17
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I just called jl audio today the vert stealthbox is available for purchase now u can call them and purchase it. They just haven't updated it on the website its available for 999.99 I believe for the. Box and the dual 10 inch wv1 and it also comes available w the slam pack for 2399 which comes with a jl xd amp 500/3 and c3 coaxial speakers and the mounts for the amp to mount on the stealthbox
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Old 08-09-2011, 05:39 PM   #18
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Looks like they went a lil smaller on the package amp- I've got the 700/5 in mine, however - I DID just blow a tweeter with it... so I am replacing it with JL 5075 (I THINK) 3/4" this week...

Its a bad ass system... the bass from that box is amazing. Not the deepest in the world, but then again, its 10"s not 12"s so that's to be expected... but the "punch" is phenominal, and plenty deep for me! Well worth it!
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Old 08-09-2011, 06:09 PM   #19
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Ya it w
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Old 08-09-2011, 06:11 PM   #20
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Good to know drago... it was either the stealthbox for me or a 10 w7 powered by a 700 watt amp if. Don't get enough bass from the stealthbox ll add the w7 in one of steves stealthboxes as well im not lokng into competing in stereo contests but I do want some good bass
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Old 08-09-2011, 06:51 PM   #21
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Drago, You need to replace both tweeters. Different tweeters will produce different sound characteristics So you want the same R and L. F to R doesn't matter so much because the rears are for fill. You could always just connect those BA tweeters and just run your C3's up front. You might like the sound better.

Unless you're willing to use your entire trunk, you won't get more or better bass than the Stealthbox in your 'vert.

I'm not sure the 500/5 is a downgrade from the 700/5 in this setup since they bridged the stereo channels to your front's, Drago. The 500/3 is a 3 channel amp which is all they were using anyway. Keeps the price down a little. If I had my "vert and some money I'd be all over this. For total bass freaks you could always upgrade the subs to to a higher end JL and use an amp with more power.
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Old 08-09-2011, 07:00 PM   #22
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Gibroni-

I am replacing both... got the set for $105 new. Should be in Thursday. Best I can tell, they ran the first 2 paired channels to the tweets, both in the doors and by the mirrors, the second 2 paired channels to the mid range in the doors and the last 2 to the subs...

They had mentioned taking them "out of phase" and if I didn't like the sound, to call and they'd walk me through changing the channel inputs... not really sure what this means, but I know using the decks fade and balance is well out of sync...I can't quite figure out the exact wiring scheme they used (hence the blown tweeter...)
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Old 08-09-2011, 07:35 PM   #23
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I replaced the factory tweeters with the c3 convertible speakers I love the sound its so crisp and clean and when I crank up the volume there's. No distortion... im just curious as to the statement mentioned above can u change the subs out in the stealthbox to maybe some w3's instead of the w1's just curious if he stealthbox has enough volume to fitbetter subs in it
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Old 08-09-2011, 07:48 PM   #24
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I cant wait for this....
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Old 08-09-2011, 08:34 PM   #25
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I replaced the factory tweeters with the c3 convertible speakers I love the sound its so crisp and clean and when I crank up the volume there's. No distortion... im just curious as to the statement mentioned above can u change the subs out in the stealthbox to maybe some w3's instead of the w1's just curious if he stealthbox has enough volume to fitbetter subs in it
I'm not well versed on the W series... but if you look at my original pix, you'll see the sub they originally tried laying on the workbench... I got my original post specs from the "beginning" stage of production. When I picked up the finished product, they said they went with the current sub (W1? ) due to the size of the speaker and space allotted ... if that helps any...

I can tell you, the original setting was at 2.5 on the sub gain.... my neighbor litterally came over the day I came home and was playing in my closed garage, that his wife thought there was a thunder storm rolling in... I'm sure its not competition grade, but compared to the upgraded B.A. system- it sure sounds like it is!
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