Trunk Setup

[redeclipse7782]

Here's stage 3 and a couple pic's of the car. It def needs to be lowered. I have the eibach kit but it drops it to much. Should i go with 17's or 18's and what drop kit should i use. I know that is sort of off topic.

 

[JSt86]

hey brian doesnt look to bad

are you putting 6x9s in the lid? thats a good idea

 

[ddavisaf]

The trunk flap will rattle like hell since you're putting a kicker in there. I'd recommend just putting the 6x9's where they go instead of in the hatch "privacy cover". But, it does look really good.

 

[n0c7]

Looks good. What are you going to do if you want to remove the privacy cover, just disconnect the speakers each time? I thought about doing that too but I was concerned about rattling, weight(if going with subs) and the ability to remove the cover.

 

[redeclipse7782]

Thanks, yes there will be (2) 6x9's in the rear lid. There will be 2 posts that come down and connect the rear lid to the bottom box to stabilize and hold the rear lid in place. The rear lid is also reinforced with 1/4 plywood. I dont ever plan on removing the rear deck lid because it will be connected to the posts to minimize rattle and movement, but yes you could easily disconnect the 6x9's to remove the rear deck if needed.

 

[devlish]

i agree with the others, i'd leave the 6x9s out of the rear deck, and put them in the stock location for a few reasons

1. bad speaker placement for imaging & sound quality
2. need to hide wires to the 6x9s
3. removing deck becomes a PITA having to disconnect wires
4. pressure on the back of the 6x9 cone from the sub may cause unwanted distortion

as for the sub box, i think it looks good so far. will really play tricks on your eyes, because it will look like your box is only a few inches thick for a big subwoofer, should be nice when done. simple, but effective.

you pretty much just lost all of your trunk space though by placing the sub in the middle huh?

can't wait to see the finished pics

 

[redeclipse7782]

1. bad speaker placement for imaging & sound quality
In the avenger the 6x9's are setup the same way on the rear deck, the speakers are going to bounce the sound off of the rear glass and come forward.

2. need to hide wires to the 6x9s
The wires will be tucked up and underneath, there will also be an amp rack going accross where the studs are to attach the rear lip to the box. I can just lay down my backseat work on all the wiring flip it back up and you cant see any of it.

3. removing deck becomes a PITA having to disconnect wires
I do not plan on removing or disconnecting any of the wires the whole setup weighs about 50lbs.

4. pressure on the back of the 6x9 cone from the sub may cause unwanted distortion
If you look at the side pic the sub is infront of the 6x9's it is not as if the sub is directly below the 6x9's

as for the sub box, i think it looks good so far. will really play tricks on your eyes, because it will look like your box is only a few inches thick for a big subwoofer, should be nice when done. simple, but effective.

you pretty much just lost all of your trunk space though by placing the sub in the middle huh?
I did not lose all of my trunk space there is still plenty of room around the sub

 

[Morel]

Actually, putting 6x9's (or any speakers) there is a reaaaaly bad idea.

All speakers (well, almost) require some sort of enclosure for best sound. If you leave them there and then put a subwoofer into your trunk. You'll have noice cancellation, and not to mention the efficency of those 6x9's will drop into the toilet.

The stock enclosures for our cars is pretty much the best actually. You have good sound filling, and a good sound stage reproduction.

Plus it looks much better IMHO.

 

[redeclipse7782]

There mainly just for when i pop the hatch they will give off a lot of sound. I had them in the rear like that before and they sounded very good. I have 4-way pioneer 6 1/2's in the doors and rear panels. And there wont be noise cancellation because they are going to reflect off the rear hatch and come forward. Its not like the sub is going to give off extreme amounts of white noise, I'm only doing 1 sub and the bass isnt going to be that extreme. Once again the dodge avenger has them setup the same way and i had a sub right in the middle of my (2) 6x9's when i had an avenger. Sounded mint. Also like a lot of rear 6x9's that are in the rear deck lid it is free air right into the trunk. There not in a small enclosure.

 

[DGajre777]

Looks good! Are you taking out the 6 1/2" speakers from the rear panels? If they are 4 ohm speakers and the 6x9s are 4 ohms, you can hook them up in a 2 ohm load. Most amps produce twice the output when the resistance is cut in half. Also, you didn't mention which 6x9s you were planning to get. Make sure you get ones that have rubber surrounds since the foam ones will crap out with all the sun hitting the rear deck lid.

 

[devlish]

In the avenger the 6x9's are setup the same way on the rear deck, the speakers are going to bounce the sound off of the rear glass and come forward.
screwing up your imaging, as mentioned, becuase it's no longer a direct route to you, it's reflected


The wires will be tucked up and underneath, there will also be an amp rack going accross where the studs are to attach the rear lip to the box. I can just lay down my backseat work on all the wiring flip it back up and you cant see any of it.
OK, didn't know that part of it



I do not plan on removing or disconnecting any of the wires the whole setup weighs about 50lbs.
ok, not light. got it. i wouldn't want to remove it either!


If you look at the side pic the sub is infront of the 6x9's it is not as if the sub is directly below the 6x9's
your trunk is creating a HUGE enclosure around the back of the 6x9s, pressure from your sub (directly below or not) will cause cancellation as mentioned by Morel, due to excess pressure in the hatch area


I did not lose all of my trunk space there is still plenty of room around the sub
Have fun piling your bags and folding chairs, or whatever you may haul *AROUND* a big box

hey man, i think it looks good, just giving my opinion and backing it up with logical reasons on a few items. i'm not gonna get into a pissing match with you about sound quality, i work on SQ cars every week at work (Authorized and Factory Trained ALPINE dealer, sales & installation). just giving you honest experiances. you asked how it looked, and I think it looks good so far, like mentioned in the first post. Sorry I got off topic and mentioned the other things. Still interested in seeing the final product.

DGajre777 is right, dropping the ohm load will give you more power, however... it will also push more audible distortion at 2ohm than 4ohm. but, on the + side, it should play louder that way.

Respectfully
~Kurt Check

 

[redeclipse7782]

Its cool im not argueing at all, I'm just debating with you. Its all good, Its difficult to explain but the area behind the speakers are going to be kinda sealed off. Behind the sub is going to be the amp rack that screws onto the studs that connect the rear lip to the box. You will have to see it when its done. I will have more pics this weeked. Yes I am keeping the speakers in the rear panels. The car will have 8 speakers + the sub.

 

[Morel]

His SQ would be a little better if he got got some of those cheapo speaker pods you can get at some Audio stores.. It'll look like ass onthe underside, but at least he'll have an enclosure for them.

Free air really is bad for sound quality.

But if he just wants a little extra sound, and likes the look, eh go for it. You paid for that car!

 

[devlish]

Its cool im not argueing at all, I'm just debating with you. Its all good, Its difficult to explain but the area behind the speakers are going to be kinda sealed off. Behind the sub is going to be the amp rack that screws onto the studs that connect the rear lip to the box. You will have to see it when its done. I will have more pics this weeked. Yes I am keeping the speakers in the rear panels. The car will have 8 speakers + the sub.

i'm guessing the amp rack will pretty much mount to the bottom of the "privacy cover" creating an enclosure for the 6x9s??? makes sense. i'm still not a fan of spkrs in the rear deck firing into the window, but if YOU like the way it sounds, go for it!

 

[Attack Eagle]

I guess he can drive around with the rear seats down so he doesn't lock the cones up on the 6x9s...




1 thing I learned...
the customer always knows everything there is to know abbut SPL and SQ... despite the fact that more cars came thru your shop last week than he has ever owned.

just give a suggestion, and then smile and say , "yes the avengers speaker placement does sound different doesn't it? No problem we can do that, I fthat is what you want."

 

[devlish]

1 thing I learned...
the customer always knows everything there is to know abbut SPL and SQ... despite the fact that more cars came thru your shop last week than he has ever owned.

not saying this is the case with this thread... but you're totally right! the other thing is, most customers also have a "best friend" that is a pro at all car audio installs, and can do it for $5.... and will work PERFECT!

 

[DGajre777]

In the avenger the 6x9's are setup the same way on the rear deck, the speakers are going to bounce the sound off of the rear glass and come forward.
screwing up your imaging, as mentioned, becuase it's no longer a direct route to you, it's reflected

Your 'total sound' imaging will get screwed IF you didn't keep your 6 1/2s in the back. The 6x9s on the deck lid are additional speakers. Devlish is right BUT bouncing sound off your glass will create your mids and highs to be out of phase with all the other speakers, this in turn will also screw up your imaging. You could wire your 6x9s to be out of phase, so the reflected sound is "in phase", but then your lows will be out of phase when you compare it to the sub (since both low frequencies will be bouncing off the glass. You can get a high pass crossover for the 6x9s and make sure the frequencies on the sub and the 6x9 don't overlap. This is the only way you can prevent destructive interference (also known as cancellation) which in turn screws up all imaging and results in loss of total output.

 

[redeclipse7782]

Stage 3 is complete, I just have a few more things to do, until it is finally done.

 

[Attack Eagle]

Your 'total sound' imaging will get screwed IF you didn't keep your 6 1/2s in the back. The 6x9s on the deck lid are additional speakers. Devlish is right BUT bouncing sound off your glass will create your mids and highs to be out of phase with all the other speakers, this in turn will also screw up your imaging. You could wire your 6x9s to be out of phase, so the reflected sound is "in phase", but then your lows will be out of phase when you compare it to the sub (since both low frequencies will be bouncing off the glass. You can get a high pass crossover for the 6x9s and make sure the frequencies on the sub and the 6x9 don't overlap. This is the only way you can prevent destructive interference (also known as cancellation) which in turn screws up all imaging and results in loss of total output.

ummm, yeah

 

[JSt86]

the tv in the trunk looks really good you should put one on the other side also. your car looks like a 4x4 haha... i think u should get 18s with like 1.5 drop or around there. i have 1.5 drop with tokico blue shocks not sure what springs though