Dan208 Posted February 27, 2010 Report Share Posted February 27, 2010 I got my new subs today (thanks, Nightshade). I got to looking at the owner's manual, and it recommends .5 cubes for sound quality sealed and .65 cubes for sound quality ported. What is going to be the difference in output between these two? Will the ported get louder and lower, but still sound good doing it? Feedback thread- http://www.stevemeadedesigns.com/board/topic/70871-dan208-feedback-thread/page__p__981961__hl__dan208__fromsearch__1entry981961 Link to comment Share on other sites More sharing options...
wL<3bass Posted February 27, 2010 Report Share Posted February 27, 2010 Why not build two different enclosures and see which you like better? It isn't like .5 or .65cubes uses alot of wood. Vehicle: 1997 S10 Blazer 4dr 4X4 Exterior: Rear End Bagged, Black Grill, Lifted 2" Amplifiers: Rockford Fosgate T8004 & T10001bd Batteries: 2 Stinger SPV35, Kinetik HC2400 Electrical: Big 3, DC Power 290amp Alternator w/ MLA at 15.5v Enclosure: 4.2 ft³ @ 33Hz 84sq.in. of port (20sq.in. per cube) Headunit: Eclipse CD3200 w/ 80G iPod Mids/Highs: Rockford T152s (a-pillars), Rockford T162s (doors) Subwoofers: 1 15" Fi BL Fully Loaded Wire: All 1/0g Kicker Hyperflex My YouTube Videos My Fiberglass A-Pillar Build My "Seamless" Looking Box Build My DD1508 T-Line Bandpass Build "Seamless" w/ Acrylic Windows (for '05 TrailBlazer) My Stealth 8" Fiberglass Build (for '05 TrailBlazer) My Build For A Friend's '08 Cobalt 15" BL Sealed Off From The Trunk My feedback/references... Link to comment Share on other sites More sharing options...
skittlesRgood Posted February 27, 2010 Report Share Posted February 27, 2010 sealed will sound better and ported will get louder. will ported sound bad? not if you build a good box. If I answered you in a well mannered, informative way, you asked a good question or had a good attitude. If I was an asshole, you asked a stupid question or you had a fucktard attitude... or I was in a bad mood. Team BassickHU: Pioneer AVIC Z110Front: Peerless SLS 6.5", Peerless HDS 4", Rainbow tweeter - running activeAmp: JL HD600/4 and DC 4 channel (bridged to midbass)Processor: JBL MS-8Subs: 2x 12" AA MayhemsAmp: DC 3kElectrical: DC power 270xp alt. 1/0 big 4. XSpower D3400 and six D680s. http://www.stevemeadedesigns.com/board/topic/121795-29-update-the-buick-is-getting-a-rebuild/ Top career scores: DBdrag 151.7 MECA SQ 82.25My SOTM build Yeah. im pretty sure they dont warranty retarded people. Link to comment Share on other sites More sharing options...
mr.p Posted February 27, 2010 Report Share Posted February 27, 2010 ported is louder? DCAUDIO BALLS DEEP Link to comment Share on other sites More sharing options...
mrmondaynight Posted February 27, 2010 Report Share Posted February 27, 2010 sealed will sound better and ported will get louder. will ported sound bad? not if you build a good box. If you notice an "SQ difference" between sealed and ported, you did something wrong with the ported box... Link to comment Share on other sites More sharing options...
skittlesRgood Posted February 27, 2010 Report Share Posted February 27, 2010 If you notice an "SQ difference" between sealed and ported, you did something wrong with the ported box... wrong. If I answered you in a well mannered, informative way, you asked a good question or had a good attitude. If I was an asshole, you asked a stupid question or you had a fucktard attitude... or I was in a bad mood. Team BassickHU: Pioneer AVIC Z110Front: Peerless SLS 6.5", Peerless HDS 4", Rainbow tweeter - running activeAmp: JL HD600/4 and DC 4 channel (bridged to midbass)Processor: JBL MS-8Subs: 2x 12" AA MayhemsAmp: DC 3kElectrical: DC power 270xp alt. 1/0 big 4. XSpower D3400 and six D680s. http://www.stevemeadedesigns.com/board/topic/121795-29-update-the-buick-is-getting-a-rebuild/ Top career scores: DBdrag 151.7 MECA SQ 82.25My SOTM build Yeah. im pretty sure they dont warranty retarded people. Link to comment Share on other sites More sharing options...
mrmondaynight Posted February 27, 2010 Report Share Posted February 27, 2010 wrong. How so? Link to comment Share on other sites More sharing options...
Team_DC-Derrick Posted February 27, 2010 Report Share Posted February 27, 2010 Vented & Ported Subwoofer Boxes Next up are ported or vented enclosures, “ported” & “vented” are synonymous, it just means the enclosure has a hole in it to let air escape. You know that guy you can hear from 2 blocks away? Well he is likely running ported box. This style enclosure will likely be about twice the size of a similar sealed box since the airspace inside the chamber is much larger. Ported enclosures are tuned to a certain frequency range which is determined by the port length, width and diameter. The port can be in several configurations such as rounded or a slot which is narrower and taller. Each subwoofer will have a specific frequency they are designed to run at for maximum output. Depending on what you plan to use the enclosure for it can be tuned to various frequency ranges by modifying the port. In general most competition SPL vehicles tune to high frequencies around 45Hz or higher. This setup would be designed for absolute maximum output but sacrificing a great deal of sound quality. A ported box tuned 25Hz will still allow your system to hit the ultra low bass notes while still keeping sealed like sound quality. The disadvantage is the enclosure will then have a fairly flat frequency range. And then the most common frequency range found usually in pre-built ported / vented enclosures is around 33 – 35Hz. At this frequency the enclosure will still deliver much more bass output than a sealed box but at the same type with still retain most of the sound quality. In other words you will get the best of both worlds with a ported box run at about 33Hz. Sealed Subwoofer Boxes The most common and versatile type of enclosure is sealed. This style enclosure is ideal for any application where space is going to be an issue. In some cases a sealed recommendation for subwoofer box will be half of what the ported recommendation is. They also have the advantage over ported and band pass enclosures in terms of overall sound clarity. A sealed subwoofer box will deliver a tight, clean and accurate bass response and have a flat frequency response curve. In general a sealed box will be for listeners looking for sound quality driven system that is clean across the entire frequency band. Bandpass Subwoofer Boxes And last but not least are Bandpass enclosures. These are a hybrid box version and combine the features of a sealed and ported sub box into one enclosure. They are generally the hardest to build and design but offer some unique advantages. Bandpass enclosures are all about efficiency. How they work is a subwoofer or subwoofers in some cases are mounted inside a dual chambered box. One chamber is sealed and the other is ported / vented. The sound waves travel from the sealed subwoofer chamber though and out the port. This allows for a much deeper sounding bass and will be tuned to a narrow frequency band which creates a very aggressive sound. Not all subwoofers will work in bandpass enclosure so make sure you research or check the manual first. just some of the info i found when i typed in sealed vs ported... The DC Integra 3 18s to 6 15 build log Team_DC-Derrick's Youtube Team DC Audio where theres a will theres a wall....... I just realized Steve has reach Voldemort status, over on JP's site he is the one who will not be named....."We dont speak his name over here, fearing it will destroy us" LOL not even in hush tones Link to comment Share on other sites More sharing options...
skittlesRgood Posted February 27, 2010 Report Share Posted February 27, 2010 How so? just like army guy posted. sealed box has a flat response curve. a ported box will peak around the boxes tuning. ive built many of both and you can hear a difference. If I answered you in a well mannered, informative way, you asked a good question or had a good attitude. If I was an asshole, you asked a stupid question or you had a fucktard attitude... or I was in a bad mood. Team BassickHU: Pioneer AVIC Z110Front: Peerless SLS 6.5", Peerless HDS 4", Rainbow tweeter - running activeAmp: JL HD600/4 and DC 4 channel (bridged to midbass)Processor: JBL MS-8Subs: 2x 12" AA MayhemsAmp: DC 3kElectrical: DC power 270xp alt. 1/0 big 4. XSpower D3400 and six D680s. http://www.stevemeadedesigns.com/board/topic/121795-29-update-the-buick-is-getting-a-rebuild/ Top career scores: DBdrag 151.7 MECA SQ 82.25My SOTM build Yeah. im pretty sure they dont warranty retarded people. Link to comment Share on other sites More sharing options...
mrmondaynight Posted February 27, 2010 Report Share Posted February 27, 2010 you CAN get a flat response in a ported box.... Link to comment Share on other sites More sharing options...
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