ok....im going to have two 12" subs in the boot of my TS but i dont know where to put them. i would still like to have access to my boot through the port hole though or make another, small compartment if the subs block it. Any ideas/thoughts/inputs would be helpful

Thanks
Paul

Place on sub on each side on the boot between the porthole!
When you want a lil doof when cruising with a few mates, Maximum 4! As the porthole will be open to allow a lil doof into the cabin!

SuFz :badgrin:

Actually, next to or even close to the "ski-hole" in the back seat is not a very good spot accoustically. That position will allow enough of the wavefront to travel away from the passengers and reflect back, cancelling much of the sound - even if you seal the output up to the hole.

I've tried this, and the sound quality just isn't there. You really need to install your subs as far back in the boot as you can. Off to one side is generally the best for maintaining access to your boot. Aim the subs at the back of the car, roughly half their size away (12" subs should be 6" away from the edge).

When mine are in, I'll post pics.

The 2 rear corners generally give good results.

The 2 rear corners generally give good results.
Yes it does if you box fits!!!! My box stops the boot lid closing in that spot!!!

[quote:74946d53de]Yes it does if you box fits!!![/quote:74946d53de]
:lol: :lol: Custom box... Thats what I did. But my sub only needs bout 0.3 cu.ft volume so it was pretty easy.

I agree, back corners near the tail lights provide great response. I've been informed that behind the seats aiming at the opposite rear tail lights also yield good results accoustically, but I have never tried it myself. I'd imagine it would only be good for 12's and 15's where you want a lot of boom. Personally I go for a quality 10" or two with quality, crisp bass rather than doof doof.

Cheers,
Adam

Actually, next to or even close to the "ski-hole" in the back seat is not a very good spot accoustically. That position will allow enough of the wavefront to travel away from the passengers and reflect back, cancelling much of the sound

Hmm, nothing in a Magna (or any other car for that matter) is gonna be strong enough to reflect anything below 250Hz. In fact, two layers of house bricks won't reflect low frequencies, so I'm not sure how the comb filtering was occuring.

My 2c.

[quote:7d4ed4909e="MagnaLE"]The 2 rear corners generally give good results.
Yes it does if you box fits!!!! My box stops the boot lid closing in that spot!!![/quote:7d4ed4909e]

*cough* custom boxes *cough*

yeah i've got the dilemma in my tr as well!
the only nice spot i could find was all the way down the boot! reflecting as close as possible to the boot lid!

but since i can't use my boot i've moved a bit further in, now it's right behind the passenger seat facing the boot lid!

a bit of crappyness but that's all i can do!

[quote:66a9b13ed4="raphael"]Actually, next to or even close to the "ski-hole" in the back seat is not a very good spot accoustically. That position will allow enough of the wavefront to travel away from the passengers and reflect back, cancelling much of the sound

Hmm, nothing in a Magna (or any other car for that matter) is gonna be strong enough to reflect anything below 250Hz. In fact, two layers of house bricks won't reflect low frequencies, so I'm not sure how the comb filtering was occuring.

My 2c.[/quote:66a9b13ed4]

By your thoughts, Damien, subwoofer placement would have zero affect on sound. And to say that brickwork doesn't reflect even low frequency sound is totally absurd. Why do they make bass bins out of MDF?

The reality is, sound pressure waves in air will tend to take the path of least resistance. Sure the sound will travel through all mediums to a certain degree, but the airflow within a car does make an incredible difference.

BUY A WAGON!!!! LOL

raphael, let me clarify:

Firstly, they make "bass-bins" out of MDF because it is strong/lightweight and can withstand the changing air pressure within it.

Secondly, sub placement has a very significant effect on the resonances caused in the boot/cargo space of your car (or auditorium or studio etc.), thus by placing the driver so that it can pump its compressions and rarefactions of air (ie. sound waves) into the boot, you are increasing the opportunity for resonances to occur. This may or may not be a good thing, as you could be creating a lumpy frequency response by encouraging resonances. So, it won't be reflections causing cancellations, but it may be the fact that a boot is going to favour certain frequencies in it's overall response. Can't say I've ever really done much testing with a car boot, maybe that can be the topic for my Masters in Audio Design research project next year :-k

However, I must apologise, I probably went a bit overboard with the brick thing. I should have said that compared to high-frequencies, low frequencies are practically inaudible as reflections.

Hmm, nothing in a Magna (or any other car for that matter) is gonna be strong enough to reflect anything below 250Hz. In fact, two layers of house bricks won't reflect low frequencies, so I'm not sure how the comb filtering was occuring.

My 2c.

You have just disproved your first statement that nothing in a Magna can reflect sound below 250Hz. Resonance cannot occur without relfection.

The fact that speaker location within a car does make a difference disproves the absurd idea that the panels of a car cannot affect low frequency sound. If reflection is not occurring, then how can the car make a difference? What other kind of interaction with sound waves can a material have?