best spl woofers?

[jlaine 10+ year member]

Josh, I'm in Seoul, Korea, let's meet halfway dab smack in the middle of the pacific ocean. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
seriously though, if I were to hand you over a TERRIBLE chines mftred sub, you would still be able to draw capabilities out of it?

I mean, I'm sure you can, but for a newbie like me, I can't begin to imagine how...

It's a subwoofer...

It's covering the most pathetically small portion of the audible spectrum imaginable.

Drawing attention to it is like saying "because the BMW uses a plastic clip to hold their sixty-sixth cupholder in place in the 6th seat next to the complimentary vacuum cleaner, the SUV sucks."

It's the easiest portion of the audible spectrum to fool human hearing with, it's easily mistaken for other regions (midbass), it has very little information, and in a system that is BALANCED properly, hardly moves more than a mm or two at the most at SQ volumes.

Sure, the B15 will whip the snot out of the funky pup in swept linear displacement, and for people that want it hella hella loud, that does matter, and will be really audible, but when there is a judge sitting in my car listening to the system, 90dB is the upper limitation of my SQ tuned vehicle. What's this net?

Eh... about 2-5 watts of power to the subwoofer.

 

[paikiah 5,000+ posts]

ah, ic ic....

well, so the saying that human ears are more sensitive to higher frequencies come to play then...

how about subs that seem hella boomy, even in a tight 0.5cubic sealed box?

 

[jlaine 10+ year member]

ah, ic ic....
well, so the saying that human ears are more sensitive to higher frequencies come to play then...

how about subs that seem hella boomy, even in a tight 0.5cubic sealed box?

Increase the enclosure size and decrease the gains.

Boomy enclosures are the net sum of enclosures that are too small for a proper response. They increase the 40+ hz information and slaughter the sub-40 hz region, causing the person to jump the gains up for their sub 40 info, and having an excess of the upper subbass region.

 

[paikiah 5,000+ posts]

hmmm, ok, so far I understand...

Now, if it's the opposite way round.. I've got dual subs that's sealed in a 1.5cube box (recommended for each was 0.75cubes) and applying 75w more power than recommended, yet still gives me a boomy sort of response. Would I need to get an equaliser to smoothen things out, or can I do something else? I've no confidence of setting equalisers.

 

[GSteg 10+ year member]

looks like you're having trouble keeping the resonance down (car, subwoofer/box, or both combination). it will sound boomy because its so exaggerating at "X" frequency (say "X" is the resonant freq.).

say u have a 5db peak at "X"hz. just cut -5db@X hz and u should have a "flat" X hz response. yea there will still be resonant within the subwoofer and box itself, but at that X frequency, the amp should send less power to the sub, which gives it that "flat" response.

but hey, i know nothing.. correct me people. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[paikiah 5,000+ posts]

looks like you're having trouble keeping the resonance down (car, subwoofer/box, or both combination). it will sound boomy because its so exaggerating at "X" frequency (say "X" is the resonant freq.).
say u have a 5db peak at "X"hz. just cut -5db@X hz and u should have a "flat" X hz response. yea there will still be resonant within the subwoofer and box itself, but at that X frequency, the amp should send less power to the sub, which gives it that "flat" response.

but hey, i know nothing.. correct me people. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

ah, I C what you mean... but all in all, I still need to get the equaliser...dang...

I'd also need an RTA should I choose to cut my worktime shorter. Another dang....

 

[GSteg 10+ year member]

i'm sure there are other ways to solve the issue without having to have an EQ

 

[paikiah 5,000+ posts]

well, what other ways do you figure? Build a new box? I'm about done with these subs anyhow and I got a new box for the 15A coming along...