Flat cone's and Square Subs. THE TRUTH

[BoominBeast]

EXP. ED

Just some help facts for noobs and whom ever is interested.

spectrum:

30hz-1 khz (low frequency)

30hz-5khz ( low to mid freq.)

150hz-5khz(mid freq.)

700hz-10khz( upper mid/treble)

1-20khz( high freq.)

A balance in the spectrum is vital for a musical system. its NOT just SUBS(LF) extension

Battle of the cones:

An extreme case of a wide angle cone would be a flat disc my peeps. If light and thin, it wil possess very little ridigity. Due to that the sub will enter breakup at Lower frequencies.

Having a rigid flat diaphragm. the axial stiffness will increase and the frequency response rises or becomes higher, with irregularity may i add.

SQUARE..cough..kicker.cough

I think philips in holland was the company that figured out what was up with the straight sided cones. Square cones produce waves with an arc the is much shorter than those equivilent frequencies in the air, this has less effect on the output than resonace freq. So the result is phase cancellation effect with irregularities in the axial pressure response and polar distribution.

I would also like to mention the many materials for the diaphragm

honeycomb aluminum, aluminum, iron, plastic, bextrene, Polypropylene, even boron.( DO you know whats in your SUB)

Just make sure you know what you are buying. Little things make a big difference

Rice and Kellog where the one who invented the paper cone, stil used today with modification. A good place to start.

Click to read more...

 

[wErd 5,000+ posts]

cool, can we get the english version?

 

[BoominBeast]

flat cones are more rigid the conventional.

Square cones have a basis for not so nice SQ..

 

[audioholic 5,000+ posts]

I think philips in holland was the company that figured out what was up with the straight sided cones. Square cones produce waves with an arc the is much shorter than those equivilent frequencies in the air, this has less effect on the output than resonace freq. So the result is phase cancellation effect with irregularities in the axial pressure response and polar distribution.

Do you (or they) have any evidence to back this claim up. Because frankly, as little a fan of square cones as I am, suggesting the diaphragm shape affects the amplitude of the wave it reproduces is absurd.
Now, if you are simply referring to stiffness in terms of a flat piston cone versus a square cone versus a traditional conical shaped cone, well then you are just making generalities about the cone's stiffness based only on its shape. The ultimate point to that arguement would be the stiffest cone always works best (no-brainer there), not that any one particular shape is always the best. If you are arguing conical shaped cones are inheritantly the strongest thus are best in respect to weight to strength, I would agree. But everything else is just generalizations.

flat cones are more rigid the conventional.

That is simply not true. Basic highschool geometry proves otherwise. A cone is stronger than a flat disc, hence the need for 'nomex honeycomb', carbon fiber and all the other exotic materials/techniques used to keep those flat cones rigid.

I would also like to mention the many materials for the diaphragm
honeycomb aluminum, aluminum, iron, plastic, bextrene, Polypropylene, even boron.( DO you know whats in your SUB)

Just make sure you know what you are buying. Little things make a big difference

Rice and Kellog where the one who invented the paper cone, stil used today with modification. A good place to start.

Im really not following your point. Here you seem to be suggesting paper cones are the best, better than using the 'honeycomb aluminum' (the honeycomb portion is not aluminum btw) and such, yet you also say flat cones are the strongest. When's the last time you saw a flat paper coned subwoofer? //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[Polecat 5,000+ posts]

amazing, the square design means they can't have SQ or output without issues....hhhmmmmmm

 

[tRiGgEr 5,000+ posts]

What a waste of time. I actually feal a bit more retarded than normal.

 

[btnhfan 5,000+ posts]

I just wasted a good minute reading that.

 

[Polecat 5,000+ posts]

I just wasted a good minute reading that.

x2 after the Coke ran out of my nose....//content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif

 

[squeak9798 5,000+ posts]

amazing, the square design means they can't have SQ or output without issues....hhhmmmmmm

Little did you know that BoominBeast could outwit the entire Kicker engineering team. Get this guy on the payroll !!

Thank god for the internet.

 

[GSteg 10+ year member]

amazing, the square design means they can't have SQ or output without issues....hhhmmmmmm

//content.invisioncic.com/y282845/emoticons/word.gif.64b12e39f936af3b4fff38a1c0bd0244.gif

Just yesterday I was on a forum where some guy said square sub does not produce pure sine waves as well as circular cone subs. //content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif I had to explain to him about sound waves //content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gif

 

[squeak9798 5,000+ posts]

//content.invisioncic.com/y282845/emoticons/word.gif.64b12e39f936af3b4fff38a1c0bd0244.gif

Just yesterday I was on a forum where some guy said square sub does not produce pure sine waves as well as circular cone subs. //content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif I had to explain to him about sound waves //content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gif

But ofcourse. Square cone = square wave.

Duuuhhhh.......

 

[Polecat 5,000+ posts]

Little did you know that BoominBeast could outwit the entire Kicker engineering team. Get this guy on the payroll !!
Thank god for the internet.

that's it, headed to the other building to clean out a guys desk, throwing him from the third floor, and making a fresh pot of coffee.... //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[Looney_Tune 10+ year member]

EXP. EDJust some help facts for noobs and whom ever is interested.

spectrum:

30hz-1 khz (low frequency)

30hz-5khz ( low to mid freq.)

150hz-5khz(mid freq.)

700hz-10khz( upper mid/treble)

1-20khz( high freq.)

A balance in the spectrum is vital for a musical system. its NOT just SUBS(LF) extension

Battle of the cones:

An extreme case of a wide angle cone would be a flat disc my peeps. If light and thin, it wil possess very little ridigity. Due to that the sub will enter breakup at Lower frequencies.

Having a rigid flat diaphragm. the axial stiffness will increase and the frequency response rises or becomes higher, with irregularity may i add.

SQUARE..cough..kicker.cough

I think philips in holland was the company that figured out what was up with the straight sided cones. Square cones produce waves with an arc the is much shorter than those equivilent frequencies in the air, this has less effect on the output than resonace freq. So the result is phase cancellation effect with irregularities in the axial pressure response and polar distribution.

I would also like to mention the many materials for the diaphragm

honeycomb aluminum, aluminum, iron, plastic, bextrene, Polypropylene, even boron.( DO you know whats in your SUB)

Just make sure you know what you are buying. Little things make a big difference

Rice and Kellog where the one who invented the paper cone, stil used today with modification. A good place to start.

HUH

 

[audioholic 5,000+ posts]

Never work above the first or second floor, unless you're **** good at your job.

 

[Polecat 5,000+ posts]

But ofcourse. Square cone = square wave.
Duuuhhhh.......

like I've even had to clarify to people...when we first introduced the L7, we had 8 people stand next to it, woofer laying flat on the floor. One on each side, and four in each corner. Hooked 1000 watts to it, the people on the flat sides of the driver heard it, the ones in the corner never heard a thing....//content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif//content.invisioncic.com/y282845/emoticons/naughty.gif.94359f346c0f1259df8038d60b41863e.gif