clamshells?

[tommyk90 5,000+ posts]

Don't look at just the port length as the only tuning factor.

His enclosure is fairly large and therefore he doesn't need a lot of length to bring the tuning down.

Don't calculate the baffles as part of the port length. Period.

 

[PioneerSPL1990 10+ year member]

Look at my old clamshell.

i didn't realize that was your's mabe i should have picked up on the name similarities.

favorited that video ages ago for the flex.

 

[Goldtaz1 10+ year member]

Don't look at just the port length as the only tuning factor.
His enclosure is fairly large and therefore he doesn't need a lot of length to bring the tuning down.

Don't calculate the baffles as part of the port length. Period.

x2. If you go with a large enclosure, but you do not use a significant amount of square inches per cube then the port length will not be long at all to get a low tuning frequency. Although I may get chastised for using the name, Steve Meade's box is a good example. He doesn't use alot of port area on his box and it's 20 cubes. Therefore the port is not very long. I always wondered how he could have the port so close to the woofers without hitting the basket until I saw how much port area he was using. It all made sense after that.

 

[JEXTEL 10+ year member]

Don't look at just the port length as the only tuning factor.
His enclosure is fairly large and therefore he doesn't need a lot of length to bring the tuning down.

Don't calculate the baffles as part of the port length. Period.

oo ok..but do you think the baffles has a role in the sound on how flat or steep they are?

x2. If you go with a large enclosure, but you do not use a significant amount of square inches per cube then the port length will not be long at all to get a low tuning frequency. Although I may get chastised for using the name, Steve Meade's box is a good example. He doesn't use alot of port area on his box and it's 20 cubes. Therefore the port is not very long. I always wondered how he could have the port so close to the woofers without hitting the basket until I saw how much port area he was using. It all made sense after that.

gotcha..never really thought about using a small port because i was going to use HDC3's but ill stick with Fi...for now

 

[Goldtaz1 10+ year member]

gotcha..never really thought about using a small port because i was going to use HDC3's but ill stick with Fi...for now

I wasn't really advocating the use of small ports, I was just trying to explain the same thing as Tommy. Basically port length is a function of overall net enclosure volume, port area used, and desired tuning frequency. Steve Meade uses an abnormally small box and a small amount of port area so he can drop a Rockford 4000d on each sub. If he didn't design his box that way those woofers would pretty much fly right out of the box. He is using pressure inside the box to help keep the woofer in check.

 

[R/T Pimp 10+ year member]

I wasn't really advocating the use of small ports, I was just trying to explain the same thing as Tommy. Basically port length is a function of overall net enclosure volume, port area used, and desired tuning frequency. Steve Meade uses an abnormally small box and a small amount of port area so he can drop a Rockford 4000d on each sub. If he didn't design his box that way those woofers would pretty much fly right out of the box. He is using pressure inside the box to help keep the woofer in check.

Those BTLs are not holding the power.

 

[R/T Pimp 10+ year member]

JEXTEL you are going at this to hard. What are you trying to achieve exaclty, what vehicle, what subs, what sort of music do you listen too, is this for the street or spl? How much power.

Yes the clamshell itself does effect the tuning but it depends what you are trying to achieve if you take it into consideration.

 

[R/T Pimp 10+ year member]

Just pm me and I will have you call me maybe I can help.

 

[IDSkoT 5,000+ posts]

Look at my old clamshell.

You remind me of Yogi Bear...

Think about it.

But, that's an impressive video. Completely useless, IMO. Music can't be enjoyable at that level. But, I'm not an SPL junkie.

 

[Cravingbass123]

You remind me of Yogi Bear...Think about it.

But, that's an impressive video. Completely useless, IMO. Music can't be enjoyable at that level. But, I'm not an SPL junkie.

it is enjoyable at that level yo.

you just can't get loud with that boss amp, so u hate yo!

 

[JEXTEL 10+ year member]

I wasn't really advocating the use of small ports, I was just trying to explain the same thing as Tommy. Basically port length is a function of overall net enclosure volume, port area used, and desired tuning frequency. Steve Meade uses an abnormally small box and a small amount of port area so he can drop a Rockford 4000d on each sub. If he didn't design his box that way those woofers would pretty much fly right out of the box. He is using pressure inside the box to help keep the woofer in check.

i understand that completely and i also know that Fi subs does well with "small" amounts of port area..its just if i use the AQ's 16 sqin is for best results saids dj

JEXTEL you are going at this to hard. What are you trying to achieve exaclty, what vehicle, what subs, what sort of music do you listen too, is this for the street or spl? How much power.
Yes the clamshell itself does effect the tuning but it depends what you are trying to achieve if you take it into consideration.

1997 nissan maxima, rap music, most likely Fi BTL's(stock form), street/bassrace and 3 gp3000ds on 16v so aprox. 15kws rms

long as the car plays the lows well im happy..oo and im shooting for a 155 dB bassrace run...

 

[Goldtaz1 10+ year member]

Those BTLs are not holding the power.

My statement did not indicate at all that the BTL's are holding up, just the fact that they would last an even shorter amount of time if he had a larger box with more port area per cubic feet of enclosure volume. Hence the reason he has contracted with Ascendant for the Steve Meade woofer capable of handling 3500 watts RMS...We shall see how that works out though.