What makes a sub loud spl wise

[dadydolas 10+ year member]

can we have some explanations in plain english on what makes subs produce high spl levels

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[oldschool4me 10+ year member]

a good enclosure design is key but you must also have a decent hu, amp and elec.

 

[ciaonzo 5,000+ posts]

High sensitivity + high thermal power rating + large cone area x large mechanical stroke = high displacement. Backed by an appropriate and well executed enclosure + slightly more power than you need + a steady voltage supply to the amplifier so the power supply doesn't starve and die.

I know, it has holes. But I don't do SPL. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[dadydolas 10+ year member]

High sensitivity + high thermal power rating + large cone area x large mechanical stroke = high displacement. Backed by an appropriate and well executed enclosure + slightly more power than you need + a steady voltage supply to the amplifier so the power supply doesn't starve and die.
I know, it has holes. But I don't do SPL. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

large mechanical stroke = high displacement.

does this mean xmax? also can someone talk a little about how to properly execute ported enclosures. how much port, how u know how much and also round v. slot ports

 

[littlepucker]

Sony xplods use propylene technology for extra dbs

 

[csu87 10+ year member]

large mechanical stroke = high displacement.
does this mean xmax? also can someone talk a little about how to properly execute ported enclosures. how much port, how u know how much and also round v. slot ports

depends on your sub. build an enclosure that is to spec for your sub. as for round vs slot, i have found that if you build it properly and dont have a lot of sharp corners, they have been about the same for me

 

[dadydolas 10+ year member]

Sony xplods use propylene technology for extra dbs

come on man at least tell ppl ur kidding

 

[x1le 10+ year member]

come on man at least tell ppl ur kidding

who's kidding? he's super serial //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[dadydolas 10+ year member]

depends on your sub. build an enclosure that is to spec for your sub. as for round vs slot, i have found that if you build it properly and dont have a lot of sharp corners, they have been about the same for me

when i use calculators on 12volt.com round ports tend to require much less space as well as less work. is this correct or am i mistaken?

thanks

 

[dadydolas 10+ year member]

who's kidding? he's super serial //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

please explain why then

 

[pokey_159 10+ year member]

come on man at least tell ppl ur kidding

umm......//content.invisioncic.com/y282845/emoticons/wow.gif.23d729408e9177caa2a0ed6a2ba6588e.gif i dont think hes joking haha:wow:

 

[vellocet 10+ year member]

Sony xplods use propylene technology for extra dbs

Naw, I googled it. That's the real deal.

 

[oldschool4me 10+ year member]

if your going for spl maybe small sealed or small ported box tuned high. it wont be very musical though.

 

[ciaonzo 5,000+ posts]

large mechanical stroke = high displacement.
does this mean xmax? also can someone talk a little about how to properly execute ported enclosures. how much port, how u know how much and also round v. slot ports

Maximum total displacement is cone area x Xmech. Xmech is the maximum physical travel the soft parts will allow, while Xmax is the linear stroke the motor provides before losing more than 30% of the BL product. They can be very close figures as well as very dynamic.

 

[csu87 10+ year member]

when i use calculators on 12volt.com round ports tend to require much less space as well as less work. is this correct or am i mistaken?thanks

yeah but you have to be careful b/c if not done correctly round ports can get loud port noise