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Mobile Electronics Australia > Mobile Electronics Discussion > Installation / Fabrication Discussion
BL35SU
I want to put a sub in between the 2x 6x9s of my parcel tray in my 2000 model 4 door lancer, i have always had large systems and in this car i cannot put subs in the boot as i always need to put stuff in there.

Currently i run FOCAL splits up front, and alpine type R 6x9s on the rear, i was looking at the new DD 8" subs and was thinking i could put one in my shelf, then fibreglass or get a box built under it

i know that the parcel tray has to be cut, but i dont mind that as i already had it cut for the 6x9s

Are there Freeair subs still on the market ?
NISMOgemini
take the 6x9's out and put them in there.. dunno how they will go with out a dedicated box tho... unless u build out the underside of the tray
BL35SU
Thats what i was planning to do that, build a box off the underside of the tray, prolly outta fibreglass, i want to leave the 6x9s if i can as they sound nice and were installed nicely!
NISMOgemini
6x9's ---> bin
Liquidity
I'm sure they do..but 6x9"s and a subwoofer wont mix. Doubly so if their sharing a box.

Taken from
http://www.caraudioaustralia.com/forums/in...showtopic=58374

"Some people choose to use 6x9”s to get “big bass”. 6x9”s are commonly sold relatively cheaply, and are advertised as being able to play “deep bass and crystal high notes”.
Not so. Most 6x9”s, while having large surface area and being able to play low, simply wont sound nearly as clear, go as loud, or quite as low as a subwoofer.
Also, because they are trying to play the entire spectrum of sound, they won’t do it all very well. In regards to bass, it will sound muddy, compared to a dedicated subwoofer, and because they are usually mounted behind you and playing directional frequencies, they will drag the sound backwards, not what you want.

If you use 6x9”s WITH a subwoofer, any frequencies that both speakers make, will interefere with each other. You’ll get cancellation, which means by a trick of physics, you wont even HEAR some bass frequencies. The 6x9”s and the sub will generally interfere with each other, and reduce your overall SQ."

Also, note safety. Apart from the illegal aspect (cutting holes in your parcel shelf without re-inforcing it is technically illegal), a subwoofer will weigh more than the 6x9"s, no doubt....and you dont want it flying through the cabin in a crash. So secure it. Very well.

A small boxed sub in the boot, maybe with ports firing up through holes where the 6x9"S currently sit, is a safer and probably more practical option. If your willing to try fibreglassing in such an awkward space, it will be easier to mount the woofer proper in the boot, safer, too.

Last but not least, yes, there are free-air subs on the market, but the general consensus is that they are inferior to subs designed to run in a box. Even small ones. It makes sense, somewhere your going to need a compromise in a free air sub, its going to need to waste energy dampening the cone (through stiffer suspension or whatnot) whereas this would be have been done by the trapped air in a box normally. Logic suggests.

Consider a removable sub-box also. Any sub-box hanging off the parcel shelf is going to take up a bit of room...i can think of ways you can have a sub-box in the boot, firing up through the ports, still leaving plenty of room in the boot. If you car's a CE, i have the same as you, and have been considering similair possibilities.
jas
i would NEVER EVER cut the parcel tray

DO NOT cut extra holes in the parcel tray

you are compromising safety


now what i would look at are some 7- 8inch free air subs (ask dd phil) and place these in the 6x9 holes without cutting any metal.

this can be done via a new rear custom parcel chelf or spacers.

just remember to fully seal the boot/ rear shelf to get the most out of this design

6x9s sound terrible and removing them will improve the sound of your car but reduce its loudness.
blanketman
rebuild the tray and mount them upside down
Poisoner
Blanket says:
QUOTE
rebuild the tray and mount them upside down
as long as the magnet clears the rear window...

i would ditch 6x9's and put 8's in the holes and as stated by nearly every 1 its soo ilegal to cut ur tray so dont do it or cut it more then get it engineered
DD Phil
How much stuff are you planning on carrying?

I've never found a car that couldn't fit a 0.75 cubic foot box and still retain huge boot room.

A box this size can be made to fit inside the spare tyre even.

Phil
bob
See if you can flip your spare tyre upside down, so the face of the rim is facing down. Plenty of room then in there to build a box, and retain a boot you can use.
blanketman
^^
that sounds like a good idea
maybe you should do that to your boot
smile.gif
Liquidity
Not easy in a lancer, a bolt goes through a hole in the wheel, and screws into an elevated metal plate. This elevated section will make it difficult for the wheel to sit evenly inverted, but you may not even need it to sit evenly. In fact, you can probably angle grind the bracket out, and fabricate your own way of securing the spare.
bob
Yeah I thought that would be the case. Some cars(ie mine), the spare is secured with a strap.
NISMOgemini
just cut the braket off and get a long bolt..

bolt it to the floor (uses 40x40 square washers on inside and outside) with the extra thread sticking up to hold the wheel down when its upside down

easy

..... well its easy if u knew how much trubbel i went to relocating my spair wheel biggrin.gif laugh.gif
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