FI Q in a Phase Box.

[Megalomaniac 5,000+ posts]

Immacomputer, can we get some pix of the sub and the box plz?
Megalomaniac, that a great idea to get the plans and make a box for you MAG.

Is the plans just for sale...?

 

[yischrax 10+ year member]

Yeah just looks like a hibrid transmissionline. I like how the port comes back in the face of the driver. Other than that looks like a transmissionline great boxes no real downfall if the sub fits low qts low fs and your good to go more or less. Figure it will hit a octive above and below give or take cleanly deepest most non resonent bass posible if done right adjustable by throwing some polyfill in the port (will also drop spl thoug). I have a plan in a 93 civic hatch to run 2 12s in a t-line with a z1 amp on them figure box will be about 13 cubic foot and should play from low 20s up to mid 70s (tuning at 40hz) hoping to see close to 150s on TL. Going to be a while though need to deaden ALOT if there is a good chance of seeing 20-30hz at 130dbs hehe

 

[BlackMaxima 10+ year member]

Is the plans just for sale...?

ye i think so, it says $40 for the plans

 

[Megalomaniac 5,000+ posts]

then whats this talk about pete not sellin the plans?

 

[BlackMaxima 10+ year member]

Yeah just looks like a hibrid transmissionline. I like how the port comes back in the face of the driver. Other than that looks like a transmissionline great boxes no real downfall if the sub fits low qts low fs and your good to go more or less. Figure it will hit a octive above and below give or take cleanly deepest most non resonent bass posible if done right adjustable by throwing some polyfill in the port (will also drop spl thoug). I have a plan in a 93 civic hatch to run 2 12s in a t-line with a z1 amp on them figure box will be about 13 cubic foot and should play from low 20s up to mid 70s (tuning at 40hz) hoping to see close to 150s on TL. Going to be a while though need to deaden ALOT if there is a good chance of seeing 20-30hz at 130dbs hehe

how big is the bow for 2 12inch subs??

HxWxL ?

 

[BlackMaxima 10+ year member]

then whats this talk about pete not sellin the plans?

thats what the website says.

$40 for the plans and

$250+ for a made box

 

[Megalomaniac 5,000+ posts]

i'll email them

 

[Megalomaniac 5,000+ posts]

submitted

 

[yischrax 10+ year member]

internaly you take the tuning fz you want to build the box to (40hz for me but you can go down to the fs of the sub or to the fs of the vehicle) devide the speed of sound by 1/4 the wavelength for me = 7 foot long. Take the sd of the sub you can have right behind the sub up to about 25 % more than the sd drop it down to the sd of the sub so 480x2 you figure out internaly externaly though I am looking at rougly 12 cubic foot maybe a little more for the 2 12s lol

 

[BlackMaxima 10+ year member]

internaly you take the tuning fz you want to build the box to (40hz for me but you can go down to the fs of the sub or to the fs of the vehicle) devide the speed of sound by 1/4 the wavelength for me = 7 foot long. Take the sd of the sub you can have right behind the sub up to about 25 % more than the sd drop it down to the sd of the sub so 480x2 you figure out internaly externaly though I am looking at rougly 12 cubic foot maybe a little more for the 2 12s lol

whats that in HxWxL

 

[yischrax 10+ year member]

if you have aim IM me on the screen name munkytruks

 

[Immacomputer 10+ year member]

then whats this talk about pete not sellin the plans?

Pete is working on gettng patents for the enlcosure design so he is not going to release detailed specs that could be reverse engineered.

Here are some pictures of the horn that I use in my room:

That speaker is from my cadence component set and is NOT a sub at all. Here are the T/S parameters of the speaker as well:

Fs = 55hz

SPL = 87dB

Qms = 9.43

Qes = .77

Qts = .71

Vas = 10.19 l

 

[BlackMaxima 10+ year member]

thats a big box

the phase box looks smaller

have you talked to Pete ??

or do you know him?

 

[AudioXtremes 10+ year member]

I know him. And he only makes it at this time.

Also in the video, the phase box centers on the listening area only.

The link in my signature Is petes forum. You will find more info there.

 

[BlackMaxima 10+ year member]

I know him. And he only makes it at this time.
Also in the video, the phase box centers on the listening area only.

The link in my 7957 east foxhill Dr

Mooresville, in 46158

Is petes forum. You will find more info there.

n/m