FI Q in a Phase Box.

[80INCHES 5,000+ posts]

Yeah, but wouldn't you also agree that there are things you can do to get gains in certain areas of the listening area? Like changing the facing around etc.

yes

and would u agree to that the vid with the pregnant female listening to a 3inch speaker makes the ***** inside her stomach dance

all jokes aside i do agree about gaining sound in certain areas by moving certain things around

80

 

[BlackMaxima 10+ year member]

Hi guys,
Here's a little more insight on the box. A T-Box is not a transmission line.

In addition, for those that will argue that a true horn cannot exist in a car environment...that is corrnect...but horn properties will always be effective in any environment.

The Phase box is a composite of a horn, T-Box, and a phase alignment enclosure. This technology has yet to be seen by any other designers out there. Both Pete and I have one in our vehicles. His is on the east coast and mine is on the west coast.

Most of my customers guess that I have either (2) 10's or (2) 12's with about 1000 watts in my vehicle. I have a JL 6W0 with 75 watts on it. The box plays flat all the way down to 22 hz with ease. You're all welcome to come by and listen to it. If you'd like reputable testimonials...you can ask Shon, the owner of Realm of Excursion. http://www.realmofexcursion.com. He's personally sat in my vehicle for a full demonstration.

As of right now...the plans are not available. Only complete built enclosures are available.

Tuan

Team Toxic Bass

1. how big will a phase box be for a 12inch sub??

2. I wanna come and listen to that box, what is the address??

 

[jimrhit 10+ year member]

The box size is determined by the size of the woofer and the freq you want to tune it to ...

say 30hz ... now you need a ~2.85m line (1/4 wave) @ 75% sd (475cm^2)

so you have a 135L line volume ... plus chamber volume (determined by the freq and the port area (75%sd) PLUS all the volume for the labrynth of wood.

All in all I'd guess ~180L-200L or 6-7+ cubes for a 12"er ....

 

[Duke 10+ year member]

The box size is determined by the size of the woofer and the freq you want to tune it to ...
say 30hz ... now you need a ~2.85m line (1/4 wave) @ 75% sd (475cm^2)

so you have a 135L line volume ... plus chamber volume (determined by the freq and the port area (75%sd) PLUS all the volume for the labrynth of wood.

All in all I'd guess ~180L-200L or 6-7+ cubes for a 12"er ....

So, thats a phase box? You know this how? By looking at a picture?

 

[BlackMaxima 10+ year member]

The box size is determined by the size of the woofer and the freq you want to tune it to ...
say 30hz ... now you need a ~2.85m line (1/4 wave) @ 75% sd (475cm^2)

so you have a 135L line volume ... plus chamber volume (determined by the freq and the port area (75%sd) PLUS all the volume for the labrynth of wood.

All in all I'd guess ~180L-200L or 6-7+ cubes for a 12"er ....

i need to know H X W x D

 

[jimrhit 10+ year member]

So, thats a phase box? You know this how? By looking at a picture?

That's a volume coupled TL ... my guess as to what this "Phase box" is.

 

[jimrhit 10+ year member]

i need to know H X W x D

16 x 32 x 44 .... but that is in no way accurate ... that just gives you a size perspective. I am not sure if you can fit the labrynth inside that (layout wise).

It takes some time to do this .. that's why he charges $$ for it ... but it sure as hell isn't difficult.

 

[jimrhit 10+ year member]

Figured I'd come back and give you some #'s

V_Chamber = 59L = 2.1ft^3

X_Sec_line = 353 cm^2 (~12.5" x 4.5")

Length_Line = 2.85m = 9.1ft

Hope that helps.

jim

 

[Toxic Tuan 10+ year member]

The box size is determined by the size of the woofer and the freq you want to tune it to ...
say 30hz ... now you need a ~2.85m line (1/4 wave) @ 75% sd (475cm^2)

so you have a 135L line volume ... plus chamber volume (determined by the freq and the port area (75%sd) PLUS all the volume for the labrynth of wood.

All in all I'd guess ~180L-200L or 6-7+ cubes for a 12"er ....

//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

So you can guess the box I used to win World finals and duplicate my car by looking at it to right?

BTW: You're complete wrong and not even close. A Phase box is anywhere from 2.5-3.5 cf for a 12" Subwoofer. And I do have one sitting right here.

The phase box is very specific. 1 cm off and the design will be completely off....that's one of the reasons why we prefer not selling plans for this type of enclosure. BTW: The picture that you see in Pete's page is an incomplete picture of the internals.

Tuan

 

[Toxic Tuan 10+ year member]

All of the money we receive from designs and enclosure builds goes directly into our team fundings and not for personal gains. Keeping a large website and maintaining isn't cheap. In addition some of the fundings helps us pay for shows.

As far as rates goes: Our boxes are cheap compared to shop prices. At our shop: the average price for a box is $450-500. Shop rates are about $60/hr for install. $80-100 per hour for custom work including enclosures. An average enclosure will take about 4-5 hours to build with carpet....plus materials. Roughly estimate $80/hr at 5 hrs = $400 + $50 for materials ---> $450. We're charging roughly for half the price...which is more than fair. If you still disagree with our pricing...then you probably do not appreciate labor for a hard working person. Most people are willing to pay for an average mechanic at those rates...then why not a top notch subwoofer enclosure?

Tuan

 

[AudioXtremes 10+ year member]

All of the money we receive from designs and enclosure builds goes directly into our team fundings and not for personal gains. Keeping a large website and maintaining isn't cheap. In addition some of the fundings helps us pay for shows.
As far as rates goes: Our boxes are cheap compared to shop prices. At our shop: the average price for a box is $450-500. Shop rates are about $60/hr for install. $80-100 per hour for custom work including enclosures. An average enclosure will take about 4-5 hours to build with carpet....plus materials. Roughly estimate $80/hr at 5 hrs = $400 + $50 for materials ---> $450. We're charging roughly for half the price...which is more than fair. If you still disagree with our pricing...then you probably do not appreciate labor for a hard working person. Most people are willing to pay for an average mechanic at those rates...then why not a top notch subwoofer enclosure?

Tuan

x2.

Also, people will always try and discredit things they don't understand.

 

[CBFryman2 5,000+ posts]

x2.
Also, people will always try and discredit things they don't understand.

Things will ALWAYS work on some law of acoustics/physics. Otherwise, how are you to design one and calculate the dimensions? So unless someone on TTB is a revolutionary physicist I doubt they are discovering new laws of physics and putting them into practice with formulas.

There is no magic box. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[jimrhit 10+ year member]

//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif
So you can guess the box I used to win World finals and duplicate my car by looking at it to right?

BTW: You're complete wrong and not even close. A Phase box is anywhere from 2.5-3.5 cf for a 12" Subwoofer. And I do have one sitting right here.

The phase box is very specific. 1 cm off and the design will be completely off....that's one of the reasons why we prefer not selling plans for this type of enclosure. BTW: The picture that you see in Pete's page is an incomplete picture of the internals.

Tuan

What dream are you living in? As stated above, you have not revolutionized the acoustic model here .. you are simply playing with well-known equations to get your box modeled right.

1cm off and the whole thing is off

Please ... lets see for 30Hz .... wavelength = ~11.43m ... so 1/4 = 2.858m ... so 90degrees of phase change over 2.85m .. lets see 1cm = 0.315degrees off ... oh my god! the sky is falling

A box for a 12 is 2.5 - 3.5ft^3

Ok .... for what driver ... what frequency range are you attenuating ... I chose a 30Hz "tune" for it ... sure .. it can be made significantly smaller for a higher tune, but I wasn't doing that ... I just grabbed a random number and gave blackmax his box sizing. Please, do prove me wrong....don't just tell me I am

jim

 

[jimrhit 10+ year member]

x2.
Also, people will always try and discredit things they don't understand.

I do hope you understand that I wasn't discrediting their work. I said that they charge the money because these calculations and layout work are difficult. I stated that the math was easy ... the work involved in getting it laid out correctly is hard. I understand this, and I know it is very hard to do what they do .. I used to build boxes and install stereo back in college.

I am not here to offend .. only here to question the revolutionary phase box ... b/c all its seems to be is a tl

 

[Toxic Tuan 10+ year member]

Revolutionary:

Let me give you a great example: Alan Dante did very close to a 180 db in extreme one with 1 woofer. Is it revolutionary...YES. Did he use revolutionary methods? No...it's still a bandpass. But his application of the bandpass is extra ordinary and it definitely works great...better than most people could possible ever imagine.

tuan