4th order bandpass question

[Buck 5,000+ posts]

i believe the sub he is refering to is a 8"
per 8 i would do .3 sealed into .4 ported 48hz with around 10sq of port that should give u a fairly good bandwidth

It's 2 ed 9kv.2s

http://www.edesignaudio.com/product_info.php?t=2&products_id=29

 

[mobeious 10+ year member]

correct thats per 8 so it would be .6 into .8 with 20sq

 

[Buck 5,000+ posts]

correct thats per 8 so it would be .6 into .8 with 20sq

Well ****, why is the ported chamber so small?

 

[mobeious 10+ year member]

its not ,, if u want a bigger peak then u can up the ported section but u will loose some bandwidth

 

[Buck 5,000+ posts]

Post cubes and frequency I should use //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

I've been told like 3 different sizes. My buddy just gave me the 8"s today. These little things have some nice excursion compared to most 8"s.

 

[Buck 5,000+ posts]

its not ,, if u want a bigger peak then u can up the ported section but u will loose some bandwidth

I'm looking to play 28hz to about 55 hz. That's really all I want to hear out of my substage.

 

[mobeious 10+ year member]

ur asking alot of a pair of 8's to play 28hz with authority lol .. 48hz would give u a -3db around 30hz

 

[mbrooky 10+ year member]

correct thats per 8 so it would be .6 into .8 with 20sq

just build it already OP...he knows what he's talkin bout...//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

and do a build log as well:

mobeious what do you think about a nightshade 18...2 cu sealed/4 cu ported @48hz?

 

[Buck 5,000+ posts]

ur asking alot of a pair of 8's to play 28hz with authority lol .. 48hz would give u a -3db around 30hz

Alrighty. I forgot I was talking about 8"s. I get carried away.

just build it already OP...he knows what he's talkin bout...//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gifand do a build log as well//content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

mobeious what do you think about a nightshade 18...2 cu sealed/4 cu ported @48hz?

Hopefully it'll turn out good.

 

[mobeious 10+ year member]

well 2 cubes might be a bit big .. the nightshade has a fs of 41ish hz so u really want to dampen anything under that so considering how much power u are going to have u could go 1.25-1.75 and then if u want high output then the ported section should be in the 3cube area and for a less peaky box around 2-2.5 and i would tune around 45hz if u want a low end monster

edit cancel that i thought we were talkin 15 lol

 

[tez4life Premium Member]

well 2 cubes might be a bit big .. the nightshade has a fs of 41ish hz so u really want to dampen anything under that so considering how much power u are going to have u could go 1.25-1.75 and then if u want high output then the ported section should be in the 3cube area and for a less peaky box around 2-2.5 and i would tune around 45hz if u want a low end monster

Very interesting, hmmm......

 

[mbrooky 10+ year member]

well 2 cubes might be a bit big .. the nightshade has a fs of 41ish hz so u really want to dampen anything under that so considering how much power u are going to have u could go 1.25-1.75 and then if u want high output then the ported section should be in the 3cube area and for a less peaky box around 2-2.5 and i would tune around 45hz if u want a low end monster

edit cancel that i thought we were talkin 15 lol

so how about 18 specs on 3500wrms //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

 

[mobeious 10+ year member]

i would need the T/S of the woofer if u want to get with me in PM i can help ya out just click the contact link in my sig

 

[CLNFREAK 10+ year member]

I've never used those, mor am I familiar with them at all lol. What power are you gonna use, and do you know the reccomended sealed volume for them?


Holy low tuning for a 4th.//content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif I bet it anialates the lows.//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

YE it hits real low in a evil kinda way //content.invisioncic.com/y282845/emoticons/satan.gif.9c6a335ed7aeeed3ee273e573f1fcaac.gif//content.invisioncic.com/y282845/emoticons/scared.gif.f134e57c6c93ccd0f15aa5ac32c7d4a0.gif//content.invisioncic.com/y282845/emoticons/omg.gif.05aa02c3095d6ce9338996654eca0863.gif//content.invisioncic.com/y282845/emoticons/censored.gif.f9ad8e7c6db58c5530c5a0a20a3b5baf.gif but sounds great I love it //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[supermaxx123 10+ year member]

I wanna see/hear this //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif