| Sealed to ported? - Click HERE for Original Thread |
| omair8 |
| I currently got 2-12" Type Rs in a sealed box. They sound pretty good but i'm thinking of switching them over to a custom tuned ported box. I searched on the forums and from what i recall a custom tuned ported box is the way to go? What are your opinions? |
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| Soulfly |
If you get a guy that REALLY Know's what he's doing.. He can tune them to be REAL nice at a certain dB level...
If I was you though.. I'd keep them Sealed.. I like the sound of Sealed better.. It sounds a bit more clear... |
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| Dan_Gyoba |
As a general rule, sealed boxes are smaller than ported for the same sub. They will also give the sub better power handling, particularly at subsonic frequencies. While they aren't quite as efficient, they do have a lot deeper bass extension than other box types as well, due to the shallow roll-off.
Ported boxes are (If done right) lower distortion, and will exhibit better efficiency at the tuning frequency, however below that frequency, the power handling drops off dramatically. Response drops off quiclly as well, since the roll-off is much sharper than a sealed box. A subsonic filter is a really good idea with a ported box, or be very careful with what you feed it. They're also more difficult to make, but not that bad, as long as you are reasonably careful with measurements.
Bandpass boxes are extremely efficient within the bandpass range, and if they're carefully matched to the rest of the components will make the most of your amplifier power, and can sound really good. They're finicky to make though, since the enclosure has to be very precise. Power handling is excellent as well.
They all have their advantages. Sealed is easiest to make, the most likely to be able to use fibreglass to get the most efficient use of airspace, or make more visually appealing. Bandpass is the most efficient. Some people typify bandpass boxes as "boomy" but they don't have to be. I've heard some excellent SQ setups utilising bandpass boxes. The trick is in blending the bass into the mid properly, and choosing tuning frequencies. Ported boxes are in between. Larger than a sealed box, and a bit more difficult to build and tune, in exchange for a bit more efficiency. The biggest drawback is the power handling below tuning frequency. (Most of these are tuned to somewhere between 30 and 40Hz, so 'subsonic' doesn't mean 'below 20Hz' for a filter. |
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| omair8 |
| So should I leave them sealed or try ported? |
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| platnum accord |
| do you like how they sound now? |
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| omair8 |
| Yeah right now they sound pretty good. |
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| JoshP2002 |
| I prefer ported myself, I cant tell a huge difference in sound quality so long as the box is built correctly. Just a lot louder. |
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| platnum accord |
| if you like how they sound now why mess around. you may become happy with the new box and you may hate it. with the flat response curve a sealed box offers over a ported box being a little more peaky right around tuning, stick with what you feel suits you. |
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| kornsined |
quote:
Originally posted by Kana
port noise is gay
Obviously the box you had never had a proper port. Proper sized ports (meaning length and diameter) do not make port noise. Slotted ports generally are the best but chew up a lot of space.
Pre-built ported boxes are pure shit. |
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| omair8 |
| Yeah that's why i was thinking of getting someone to custom make one for me if i decide to go ported. |
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| Kana |
quote:
Originally posted by kornsined
Obviously the box you had never had a proper port. Proper sized ports (meaning length and diameter) do not make port noise. Slotted ports generally are the best but chew up a lot of space.
Pre-built ported boxes are pure shit.
i have never heard a ported box, pre built or not without port noise. Didn't matter who built it, air flowing through a hole is going to make noise. |
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| Talon_66 |
| Find a place that uses bassbox pro, you can design wicked boxes with that program. Even gives a print out of the layout. |
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| kornsined |
quote:
Originally posted by Talon_66
Find a place that uses bassbox pro, you can design wicked boxes with that program. Even gives a print out of the layout.
Or find it on the net :cool: . WinISD is good too. |
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| Talon_66 |
quote:
Originally posted by kornsined
Or find it on the net :cool: . WinISD is good too.
Yeah its easy to find and download, plus free updates.
But I dont think a newb would be able to understand much of anything about the program |
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| Ravendarat |
quote:
Originally posted by Kana
i have never heard a ported box, pre built or not without port noise. Didn't matter who built it, air flowing through a hole is going to make noise.
Thats funny cause I have NEVER made a ported box that did have port noise, maybe you dont know what your listening to |
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| omair8 |
quote:
Originally posted by Talon_66
Yeah its easy to find and download, plus free updates.
But I dont think a newb would be able to understand much of anything about the program
Yeah i wouldn't know a thing about that program haha hence someone make a custom ported box for me! |
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| Talon_66 |
quote:
Originally posted by omair8
Yeah i wouldn't know a thing about that program haha hence someone make a custom ported box for me!
Any good car audio installer would know how to use the program. |
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| platnum accord |
well win ISD is more of a simulation based on the subs parameters, power and the box. its not really of a sound quality tool, and as i have understood sq is what omair is looking for.
if your looking for sq a sealed box is good enough. but if you are really serious someone on this forum and better yet someone from this thread would be more then ahppy to donate a little bit of time to help you out and make a proper ported box that meets all of your expectations. |
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| omair8 |
| The sealed box setup sounds good but i kind of want a little more bass lol |
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| omair8 |
| So would anyone here that knows their stuff make a nice custom tuned ported box for me? |
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| platnum accord |
| im sure if you cover the costs anyone would. |
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| omair8 |
| yup, of course i'll be covering the costs:D |
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| platnum accord |
| a little more bass is like how much more? describe what you think your system is lacking. really low bass? like it has trouble going under 35hz. or it is just lacking all around? a description like that would be useful. |
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| omair8 |
| Like i mean it sounds good, but from what ive heard, a ported box just sounds a lot better to me, well a custom one that is. Like the bass is good, but i want it to be a bit louder. |
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| omair8 |
| Another question: what would be a good tune to set my 2-12 Type Rs at? Low 30s, 35-40Hz? I want it to be a mix of SQL and SPL something that blends in both ways. |
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| Dan_Gyoba |
It kind of depends on the car, what sounds good in an SUV probably won't in a Civic, y'know?
Ported boxes tend to be better for SQ, but I've always found that tuning under 40Hz the box starts to get really big, and the power handling starts to suffer. For SQ, that's low enough, but that means that you're missing out on a lot of the really low bass. I suppose that it also depends on the speaker in question, too.
Try not to get too hung up on numbers. 40Hz seems like it's too high when you look at it as a full octave above 20Hz, but really, there's very little MUSIC below that area, so a lot of very good SQ systems are tuned there.
Ported boxes are generally an SQ choice, using less amplifier, and getting that little bit of distortion that the sealed boxes have. |
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| omair8 |
Yeah this will be in my 97 eclipse, hatch.
So should i stick with 40hz? I was reading some where that 33 or 35 Hz is a good mix of SQ and SP. |
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| platnum accord |
| anywhere between 35-40 is a good area for daily. port area will also affect output to a degree. |
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| allenfre |
quote:
Originally posted by Talon_66
Yeah its easy to find and download, plus free updates.
But I dont think a newb would be able to understand much of anything about the program
Is it true that if I blend the bass into the mid properly, and choosing tuning frequencies might work properly with this kind os setup? Where could I possibly get that program..
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