Ok i was wondering about inverted subs because ive seen them a lot, but i dont quite understand how they work and the difference detween regularly mounted subs and inverted ones, could anyone tell me about the differences ( sound quality, loudness ect. )
(i have looked in the forums)
the only difference you can "hear" would be the mechanical noise. otherwise it's just for looks.
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so its the same if it is inverted or regular there isnt really a difference in sound ?
Chris wrote:so its the same if it is inverted or regular there isnt really a difference in sound ?
yes there is a difference in sound, read my post again.
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Hmm, this brings up my question I had when I ran my little 10" dual 6 ohm subs. What would happen if you had a sealed box for 2 subs (they're not separated in terms of air flow inside the box), and you had one sub firing in (or reverse polarity) and the other firing out (or regular polarity)? My thought was would it get louder, quieter, what?
My reasoning is that with one firing in and the other firing out being louder is each sub is using air pressure to push the other out a bit further, resulting in larger/louder sound waves, but also because the other is backfiring, could also produce inverted waves therefore cancelling out the bass altogether (or just significantly)
My reasoning with two subs firing the same way at the same time is that they both produce un-inverted waves, and the air inside the box gets crushed to make a "boom" effect (although I highly doubt that).
I know with ported and bandpass boxes its a totally different story than what I thought up here, but maybe they're not so different. I've tried both ideas stated above, as well as bandpass and sealed. I notice that in sealed its not nearly as big of difference (in fact it didnt sound any louder/quieter as when they're both firing out) as ported/bandpass (mind you, alot of people say sealed is the most forgiving, maybe thats just in the construction, maybe it applies here too). I'm not asking for experience really, I'm asking for the mechanics (why) and an explanation of those mechanics (how), or simply put... what happens inside/outside the sealed box when both subs are firing out, and when one sub is firing in?
Sorry for the long post.
Calvin Di Bartolo wrote:Hmm, this brings up my question I had when I ran my little 10" dual 6 ohm subs. What would happen if you had a sealed box for 2 subs (they're not separated in terms of air flow inside the box), and you had one sub firing in (or reverse polarity) and the other firing out (or regular polarity)? My thought was would it get louder, quieter, what?
My reasoning is that with one firing in and the other firing out being louder is each sub is using air pressure to push the other out a bit further, resulting in larger/louder sound waves, but also because the other is backfiring, could also produce inverted waves therefore cancelling out the bass altogether (or just significantly)
My reasoning with two subs firing the same way at the same time is that they both produce un-inverted waves, and the air inside the box gets crushed to make a "boom" effect (although I highly doubt that).
I know with ported and bandpass boxes its a totally different story than what I thought up here, but maybe they're not so different. I've tried both ideas stated above, as well as bandpass and sealed. I notice that in sealed its not nearly as big of difference (in fact it didnt sound any louder/quieter as when they're both firing out) as ported/bandpass (mind you, alot of people say sealed is the most forgiving, maybe thats just in the construction, maybe it applies here too). I'm not asking for experience really, I'm asking for the mechanics (why) and an explanation of those mechanics (how), or simply put... what happens inside/outside the sealed box when both subs are firing out, and when one sub is firing in?
Sorry for the long post.
but when only inverting one sub, and reversing the polarity. both cones move in the same direction at the same time still, so there wont be any noticable gain or loss in output.
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wysiwyg wrote:Calvin Di Bartolo wrote:Hmm, this brings up my question I had when I ran my little 10" dual 6 ohm subs. What would happen if you had a sealed box for 2 subs (they're not separated in terms of air flow inside the box), and you had one sub firing in (or reverse polarity) and the other firing out (or regular polarity)? My thought was would it get louder, quieter, what?
My reasoning is that with one firing in and the other firing out being louder is each sub is using air pressure to push the other out a bit further, resulting in larger/louder sound waves, but also because the other is backfiring, could also produce inverted waves therefore cancelling out the bass altogether (or just significantly)
My reasoning with two subs firing the same way at the same time is that they both produce un-inverted waves, and the air inside the box gets crushed to make a "boom" effect (although I highly doubt that).
I know with ported and bandpass boxes its a totally different story than what I thought up here, but maybe they're not so different. I've tried both ideas stated above, as well as bandpass and sealed. I notice that in sealed its not nearly as big of difference (in fact it didnt sound any louder/quieter as when they're both firing out) as ported/bandpass (mind you, alot of people say sealed is the most forgiving, maybe thats just in the construction, maybe it applies here too). I'm not asking for experience really, I'm asking for the mechanics (why) and an explanation of those mechanics (how), or simply put... what happens inside/outside the sealed box when both subs are firing out, and when one sub is firing in?
Sorry for the long post.
but when only inverting one sub, and reversing the polarity. both cones move in the same direction at the same time still, so there wont be any noticable gain or loss in output.
I personally notice that in my box for 2 12' sony xplods ( crap i know....) and a viper d300.1 amp , my lows sound noticeably louder if one sub is inverted in the box and the polarity is reversed. I feel this is becuase of the extra air space in the box since the magnet and basket of the sub are not displacing the air, more box volume equals more excursion because the subs can move easier.
However, i only notice a difference in my box that has a single chamber for both subs ( no divider) . anyone else have input?
yeah really... The question everyone was answering wasnt actually my question. The question was about inverting a sub and having both wired up + to +, - to -, OR having one sub + to +, - to -, as the other sub is running - to +, + to -.
the question was one or the other as I think it shouldnt make too much of a difference.
Calvin Di Bartolo wrote:yeah really... The question everyone was answering wasnt actually my question. The question was about inverting a sub and having both wired up + to +, - to -, OR having one sub + to +, - to -, as the other sub is running - to +, + to -.
the question was one or the other as I think it shouldnt make too much of a difference.
i was under the assumption that swapping the polarity on the one inverted was a given.
but in this case..yes, you should reverse the polarity of the sub you invert (if you have two, and invert 1) otherwise they will be fighting each other, you want them both to move the same direction at the same time
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alright, so that will help improve SPL? will that also improve SQ?
Calvin Di Bartolo wrote:alright, so that will help improve SPL? will that also improve SQ?
no, it wont improve anything.
inverting a sub is just for looks, switching the polarity is just to keep it from sounding like poo from having one sub in phase and one sub out of phase.
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Ok, the volume of the box will increase slightly so the sub will see a larger box and MIGHT hit a little lower. The surface area of the cone will decrease depending on the size of the spider your sub has. Normally the dust cap would be part of the piston area, but if it is inverted the spider eats up a lot of the cone, so you would lose spl. I never invert my subs because of this. All though some of them look pretty cool inverted.
