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Silver Member Username: BradgmanGAlVeStoN, Tx Usa Post Number: 144 Registered: Jan-06 | What is the difference between sealed and ported? I was always told that ported has better sound quality, is louder, and can handle more power. When is it better to use a sealed box? Im guessing when you have very little room and need a small box. Thanks Brad |
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Gold Member Username: RovinTrinidad & T... Post Number: 6946 Registered: Jul-05 | read this http://www.diysubwoofers.org/ ........ |
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Gold Member Username: BestmankindLos Angeles, CA USA Post Number: 3370 Registered: Oct-05 | i think that depends on the sub. some subs sound better in ported than sealed and the other way around. |
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Silver Member Username: SolacedagonyNew Jersey US Post Number: 864 Registered: Oct-04 | Some subs were designed more for sealed over ported, or vice versa. You can generally tell from the EBP (search it on google, I don't have any links on hand atm, at work). Sealed gives generally a more flat response, more power handling, and better transients (I believe?) than ported, but ported gives you less power handling, and the 3db increase from the port. |
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Silver Member Username: GoatinU.S.A Post Number: 640 Registered: Jan-06 | I have 2 R's sealed to specs and they sound amazing I was going to port them but I like Techno so I kept them sealed, but if you put on some say lil john even those lows are very nice on my R's. I prefer high power sealed Tight SQ over loud bass of a ported box. |
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Silver Member Username: DjbeanpoleNaptown, Indiana USA Post Number: 125 Registered: Nov-05 | I myself enjoy techno and rap and did the sealed thing with my R's before swithcing over to port. Ilike the port muhc better. Hits harder and a little lower. 2 TypeR's as well like rave'n http://mypage.iu.edu/~dawesten/System/Trunk2.jpg Depends on what you wnat. |
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Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 11452 Registered: Dec-03 | many factors. the Qts or EBP of a sub determines if it's best suited to sealed, ported, or either enclosure type. after that each design has it's pros and cons. in a car (as opposed to a house, or anywhere else due to cabin gain) a sealed box will give a "flat" response, meaning no rise or peak in output at a given frequency. This is ideal if you're doing a sound quality system and you don't want a bass-heavy system. Ported will give you a spike in output around the port tuned frequency of the box (up to about 1 octave above) so you get more deep bass, with the same or less power used. It's a mans of getting more output without spending money for a bigger amp on a sealed box. a ported box has increased group delay, and decreased thermal power handling, but transient response is improved, and mechanical power handling goes up. excursion is limited in a ported box, but less pressure is exerted on a sub in a sealed box. There are trade-offs for every enclosure type. as suggested, diysubwoofers.org has a lot of good info on every box type, or at least all of the common, not so esoteric designs. |
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Silver Member Username: BradgmanGAlVeStoN, Tx Usa Post Number: 146 Registered: Jan-06 | Thanks a lot! |
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Silver Member Username: BradgmanGAlVeStoN, Tx Usa Post Number: 147 Registered: Jan-06 | Off topic how much polyfill do you put in a sealed box? I have a small 1.0 cubic sealed box behind the seat in a ranger and was curious about how much polyfill I should put in the box if any? |
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Gold Member Username: Suleman36Maryland U.S.A. Post Number: 3405 Registered: Feb-05 | For each cuft you add 1 lb. of polyfill if you want to smooth things out and get a deeper sound. |
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Silver Member Username: BradgmanGAlVeStoN, Tx Usa Post Number: 148 Registered: Jan-06 | Thanks! |
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Bronze Member Username: Jl_rockTemecula, California U.S. Post Number: 47 Registered: Mar-06 | depends on the size of the box and the power to your sub |
