AB-36 Chamber & Driver

[hunterslane]

He is doing no damage to the cone but also that is not how you test a cone rigidity,all pro audio cones will bend easily that way ,in proaudio soft cones play louder so they are installed with stiff suspensions(spiders).The strength of a cone is at the center of it,which means the cone will not bend easily if pressed from the center

[dianaisahorse]

900 usd ripped off i get these for 400usd ,lol

[mrmanuel13]

man richg101 is a hypocrite does not know wtf he is talking about , obviously the sub is very flimsy meaning that the sub is self compared to the thickness of a cone to a fosgate competition speaker is no competition ,, geez cerwin needs to make better sub quality after seen that u opened that i realized that all that shit in reality is like 30 bucks of wood and the sub itself like 150 give or take ,, i guess their just selling their technology but i still think i can craft one better

[RichardEllisxyz]

It just gives me the hebee jeebies when one starts poking at drivers. A driver cone moves a mass of air...and the pressure per... lets say a square inch is extremely low. A localized pressure at any small surface area will distort it. The ability of a cone not to deform is dependent on its shape more than its material "softness". An applied stress as you applied to that cone can distort the spider into a permanent condition, Some voice coil to pole piece clearances could be altered.

[djbojj]

haha, stop fingering the sub!

[CHRISTIANMINDAMIX]

nicee man how much did you pay for it?

[bitcoredotorg]

Way too much to be buying another one again. ~900$ usd.

There are better plans out there...

[stevo0625]

never mind I see its an afterburner sry

[stevo0625]

Hey Im curious about the Earthquakes's horn, does CV use a baffle or silencing panal at the first critical bend to defer distortion?? and how well does the Eb do before distorting?

--side note-- is this an earthquake or jr earthquake

[stevo0625]

Are you retarded?? those mesh paper cones are what is used in all pro adio equipment!!because they are light and rough surfaced, they produce the lowest hertz with the greatest sensitivity. most polyropolene cones will only reach to about 40hz but the paper cones produce a rich 30hz depth. the only reason polypropolene is used is because of its abulity to take on weather. thats why mobil audio uses it. check any pro audio company and I garentee they use papercone for the full/low range woofers

[bitcoredotorg]

No, I'm definitely not retarded. I also never said a word about polypropylene cones. Also, there is no 'rule' that paper pulp cones will go lower than any other material. A cone's job is to stay rigid, and be light - That's it. Cone weight, suspension & electromagnet dictate it's low end response. However, the cone does flex quite a lot for this type of driver. My tumults have a Kevlar impregnated pulp cone that do NOT flex like this driver. Many other pro drivers I've handled are much better

[richg101]

it amazes me how many clueless people comment on vids like this. i see countless arguments between people who shout like they know a load of stuff when they clearly dont. the roughness of a cone doesnt dictate the lf response joker.

to the uploader... fingering that cone in such a way probably created weak points in your cone. the stresses applied to a cone in this type of cabinet means a weak point will be more likely to cause issues than in a standard direct radiating cabinet.

[bitcoredotorg]

As long as I did not crease the cone at all, it won't hurt it. I decided to include the finger-poking portion of this video purely because of how thin and flimsy the cone is. It's not a very great driver, but it's still going strong.

[dvcsub]

I am fascinated by this design(Folder horn) that cerwin vega came up with many years ago. other have copied it but they were the first. The speaker is inside the cabinet in a sealed enclosure and the sound waves are amplified by the cabinet itself, like a saxofone. this design is better than sealed, ported, bandpass or any other enclosure. they are 18s by the way. one cabinet is as loud as two 18s in a ported box, Amazing!

[MightySaturn5]

The folded horn is very old, been around since the early 1900's.

Back then amps were maybe 25 watts -to reach the furthest points in a room required horns to assist the speaker at reaching these distances.

With low frequencies the horn has to be deeper (longer), because of this horns for lows were folded around themselves-instead of an unmovable 40 ft. straight horn you'd get a large 6' x 6' x 4' box on wheels.

Gene Czerwinski makes a nice compacted bass horn (EL-36) but did not invent them.

[stevo0625]

dude.. cerwin-vega definately did NOT invent the folded horn!! I think perhaps Kliptch did but i happen to know companies have been using this since before me and u were born. check out the jensen imperial. it's pretty dag-on old and it aint the oldest

[Daniel3852]

Rofl, quite stiff suspension..

But still, its a smart design,

Letting the speaker move as little as possible by havind a airtransformer before it...

[stevo0625]

The stiff suspension is created by the "spider" But the science behind it is the phasing of the sound and doing so without distortion. the best horns are the ones that are not folded but to do that would be a huge box! each critical bend produces distortion multiplicatively but this design works great.

[bitcoredotorg]

The science behind the horn isn't phasing, but acting as an acoustical transformer. The horn couples the driver to the air more efficiently: the compression ratio, horn expansion rate, & mouth/throat surface area.