should i port my box?

[10oxr]

just wondering if anyone can help, i have a pioneer champion series 10" sub i believe it 350rms, it is in a pre made sealed box, should i port the box or not, would it make a deference and if so what size do i make it and were on the box is best
thanks

[Philthy]

Just pointing out, that its not as simple as cutting a hole in your existing box. You will need to make a bigger one, to the subs specs, then the size/length of the port will depend on the desired tuning frequency.
So, if you still want to do it we will need the model number of your sub

[StoneX]

Those subs do sound better in a ported box but as Philthy said, you will need to make the box bigger and use the correct length port.

[Verynice]

Also depends if you mainly listen to rock/metal etc or dance, hiphop, techno etc etc

[Luke0011]

Yes technically speaking different size and port length and calculations and all that do help, but i say just cut a hole and buy a 10 dollar 4 inch port and see if you like it. Then you can seal it back up again if you dont like it and try a different box. It will make a difference in being louder, ported boxes are more efficient and the sound will be different. Only you can decide if it sounds better. The only place i would advise not making the port is directly behind the subwoofer. You shouldnt be able to see the woofer at all by looking into the port.

[StoneX]

A random port could be tuned to any frequency... It could be tuned to 50Hz and then he'll have no low bass. How is that going to let him assess if he likes ported? Of course it'll sound shit if he doesn't put any effort into designing it.

Do it properly the first time.

The specs of those subs indicate that it suits a ported enclosure better than sealed, so music genre doesn't really matter.

[acarmody]

How do you tell if a sub is better suited to ported or sealed? I remember reading it somewhere a while back, it had something to do with one of the subs specs but I can't remember which one.

[StoneX]

Borrowing this from another forum somewhere.

Efficiency Bandwidth Product (EBP)
EBP = Fs / Qes
50 or less = best used in a sealed enclosure.
50 - 90 = flexible enclosure options.
90 or greater = best used in ported enclosure.
-OR-
Qts < 0.30 - ported
Qts = 0.30 - 0.50, use ported or sealed.
Qts > 0.50 sealed

That's just a general guide. Some subs with high Qts and high Xmax can still suit large ported enclosures.

[2Com]

I Inverted my subs and I got double the bass......try that before cutting holes into your box

[acarmody]

How the hell would inverting it double your bass?

[StoneX]

You wouldn't. Internet people are retarded.

[acarmody]

Yeah I knew you wouldn't, I just wanted to know 2Com's theory so I can point and laugh.

Quick question. Would inverted mounting only work in a ported box?

[2LOUD2OLD]

perhaps he had them wired out of phase when they were mounted normally, then when he inverted them the wiring didnt change and as a result they were in phase.... just a thought

[StoneX]

Maybe but he's telling people inverting makes twice as loud which we know isn't the case, but newbies might believe him.

[2Com]

the wiring was done straight from your subs straight to your monoblock

its common sence, with certain subs the bigger the box is the more bass you get, so when you invert the subs your boot acts as the box.

[StoneX]

No. The box acts like the box whether you mount it normal or inverted. Go do a little research on it and you'll see

[2Com]

ive done it to many sets of subs and many people do it too.. ud be suprised how many people out there have inverted subs lol. the only way to see the difference is to try it.

[HCVP]

^^^^WTF is this guy on about !

[sweefu]

Christ.. people need to learn some proper science behind sound processing.. then they would realise that a 400 or 300litre boot does not act as a box.. especially considering the boot is vented in many places and not in the slightest bit sealed

[StoneX]

ive done it to many sets of subs and many people do it too.. ud be suprised how many people out there have inverted subs lol. the only way to see the difference is to try it.

You clearly have no idea what you're talking about. I've inverted lots of subs and they are the same loudness either way. The only real reason to invert is for looks.

[acarmody]

ive done it to many sets of subs and many people do it too.. ud be suprised how many people out there have inverted subs lol. the only way to see the difference is to try it.

Mate your trying to tell installers and other people who have done many installs that they are wrong. Try the flip-side.

I believe the sub will use whichever space is smaller as the enclosure, whether that be in front or behind the sub (ie, inverted mounting or normal).

[StoneX]

The wood thing the sub is screwed to is always the box

[acarmody]

The wood thing the sub is screwed to is always the box

Fair enough. What about firbeglass, got you there, zing.

[holdenboy]

Even with fibreglass enclosures, usually theres an MDF ring for the sub

[HCVP]

Does this inverted theory apply to other things aswell, not just subs? Like if i was to mount my engine invertidely, like on top of the bonnet, would it be twice as fast?