Silly sub question

[Cosmo Dude]

As some/most of you know I'm the proud owner of a BA hardtop. This means I have a parcel shelf under my back window which currently houses my two 6X9 rear speakers.
I want to keep my boot but the attraction of more bass is an attractive idea (good speakers assume a separate base source) but I want to keep my boot!!!

Anyway to the question…
I have an area of about 450mm width, 300mm length and 150-100mm depth under the parcel shelf and between the rear speakers, would this be an adequate area to install a moderate sub place the bass

[mrpayner]

Are you thinking of mounting a sub in the middle of the parcel shelf? Or would this compromise the structural integrity of the car?

AP

[Cosmo Dude]

I'm considering mounting a sub in the middle of the parcel shelf. I want to keep the floor available to carry things

[SehnKhan]

You won't be getting the best bass out of it that way.

[JynX]

All depends on the type of sub.

I have a 12" Alpine VR which is originally designed as a free to air sub and pumps very hard in large spaces.

I would be more inclined to go with a boxed 10". As long as its designed with portability in mind they you can remove the box for the trips you need the full boot but will leave you with 3/4 when it is.

[Dogo]

with a proper boot like that you have the advantage that you can use a free-air sub, and not have to worry about a box taking up your boot.

ideally, you would have a sheet of wood across the hole that the seats cover - ie facing forwards. the sub would mount into this with the rear exposed to the boot space. no box.

if you make the wood easily detachable from the metal surrounding the hole between the boot and cabin. bolts with 'butterfly nuts' would be ideal.

you could still mount the sub onto the shelf if you particularly want it there. same deal. no box, as the sub is running free-air.

when choosing a sub make sure you get one that is designed to run best in a free-air setup if you choose to use this method.

next, you'd have to think about sub size ! i'd say a 10" would run quite well

... and then brand , power etc ...

[SehnKhan]

I stand corrected

[platypus]

10 inch sub on a parcel shelf?? your kidding right?
sorry i'm no stereo genius, but logic says to me that while you could possibly get bass pumping, the iminent rattles that go hand in hadn with that setup would make you shoot yourself.... sehn kahn, sit back down!!

the F series subs will be good in this posi, but eeeeeek booom/rattle!!! uggh

still use an F series sub, but make an awfully shallow box up, one that will have just enough depth, no back on it, and a sound hole to maximize the sub air space (Free air subs still require a "box" but don't need the air tightness...... (my understanding of it anyway!!) use the butterfly nuts as suggested, with wide washers underneath, to secure the box down to the car, so as to avoid the bouncing around, or use suitable tie down straps, or even ockey straps... jsut somehting that will stop the box bouncing around....

carpet the MDF structure so as to avoid bare wood on plastic...

that should be a hella mad setup.... ( every one, i'm pissing my 12's off in favour of some 10 inch Pioneer F series subs...)

[MrShadow]

every one, i'm pissing my 12's off in favour of some 10 inch Pioneer F series subs


Ahh, well now, would we be selling our old subs? :roll: :roll:

[platypus]

haha i was thinking of throwing them at a small child actually!!

[Dogo]

10 inch sub on a parcel shelf?? your kidding right?

actually with the 10" i was still thinking a free air sub, mounted on a board over the hole between the cabin and boot.

mounting into the parcel shelf would involve cutting the metal and hanging a box under the shelf. the setup between cabin & boot is easier to setup and remove.

free air takes away problems of boot space been taken up by a box too. which was what rod was concerned about

[Cosmo Dude]

Thanks all,
Current thinking is a 10" mounted through, and a little to one side of, a piece of 20mm MDF and suspended between the rear speakers. This way I could mount the sub any additional amp on the same surface.

[platypus]

rod, if your gonna do it why don't you mount the amp onto the seat back....

[dfvadr]

hey rod [cosmo] a free to air sub is ok in the parcel tray as long as ur not looking for that boom boom type off bass
if you just want a bit of bass in the back ground off ur music it will be fine as long as u run an amp with low pass setting
u can see for urself how they work just go to a car yard an listen to the stereo in a fairlane or statesman they have an 8" or 10" [depending on car an model] mounted in the centre off the parcel tray with the parcel tray material covering them

[Cosmo Dude]

rod, if your gonna do it why don't you mount the amp onto the seat back....

Every couple of weeks I jam my bike in the back and it takes a lot of room, but not up high under the parcel shelf.
Taking the sub assembly out occasionaly is OK but not frequently.

[MrShadow]

i was thinking of throwing them at a small child actually



Cool, I'm there... :twisted: :twisted: :twisted:

[platypus]

Every couple of weeks I jam my bike in the back and it takes a lot of room, but not up high under the parcel shelf.
Taking the sub assembly out occasionaly is OK but not frequently.


mounting the amp on the parcel shelf would require minumum 5 leads to be d/c...
i was thinking up the top of the seats.... that way shouldn't foul with bikes, shopping, hitch hikers etc.... and only 2 wires to d/c for sub ... or you could wire an RCA plug for the sub.... therefore this would make one wire to unplug

just my $0.02

[Cosmo Dude]

If/when this comes off I'll take some pics and write a report.

[Chris]

Hey mate,

i have a sub and amp in my ba hardtop. Its a 12" in a box that sits in the boot. Look at my readers ride. Amp is on the back of the seat. n e way i have a fair bit of rattle from my parcel shelf without the sub being mounted on it so ur going to have a lot of work to make it not rattle. just thought i would tell you that.

Chris