I know its a noob question but whats the difference beween passive and active subs?

[DB-Audio 10+ year member]

just like the title says whats the difference between passive and active subs? is one better than the other? would i be able to put a passive sub right behind the active sub without damaging either of them?

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[Side Show 10+ year member]

errrrr what?

 

[geowick07 10+ year member]

Wow....just, wow!

Give this a read-through...hopefully, it will answer some questions for you.

http://www.caraudio.com/forum/showthread.php?t=146726

geo

 

[andrew2944r 10+ year member]

Why would you run a sub passive then run the other active?

Please read this to help you understand Active vs Passive

http://sound.westhost.com/biamp-vs-passive.htm

 

[Vermithrax 10+ year member]

Are you talking about a passive radiator?

 

[DB-Audio 10+ year member]

Are you talking about a passive radiator?

yes

 

[Vermithrax 10+ year member]

Is this for home or car? Need a better description of what exactly you're trying to accomplish.

 

[DB-Audio 10+ year member]

Is this for home or car? Need a better description of what exactly you're trying to accomplish.

car stereo just trying to make my explorer as loud as possible without using up all the space

 

[Vermithrax 10+ year member]

car stereo just trying to make my explorer as loud as possible without using up all the space

IMHO, passive radiator is not the way to go to accomplish this goal. You'd be better off with a ported or bandpass enclosure tuned to peak at the vehicle's resonant frequency.

 

[Vermithrax 10+ year member]

Oh and to answer your original question, a passive radiator is basically just a subwoofer's soft parts without the motor. Weights are added to alter the mms to adjust the tuning frequency. It works similar to a ported enclosure in theory, where the passive radiator does the same job that a port does.

 

[DB-Audio 10+ year member]

IMHO, passive radiator is not the way to go to accomplish this goal. You'd be better off with a ported enclosure tuned to peak at the vehicle's resonant frequency.

thanks for the tip im in the process or building a box with 2 5"x16" ports for the 2 lanzars that i have now not sure how its gonna due but i hope it will sound good

 

[Tehgregzor 10+ year member]

what dimensions you got for the box?

 

[Vermithrax 10+ year member]

That sounds like a lot of port area for 10's. You're gonna have a helluva port legnth unless you're tuning really high I believe.

 

[DB-Audio 10+ year member]

what dimensions you got for the box?

40x16x16

 

[DB-Audio 10+ year member]

That sounds like a lot of port area for 10's. You're gonna have a helluva port legnth unless you're tuning really high I believe.

well originally I was building the box for 2 12's and i had already cut the holes for 2 12" subs but then i got the 2 10" subs from one of my friends for cheap so rather than just waste the wood i'm building the box around that what would you suggest for port sizes