texaschevyryder
Full Access Member
i have a band pass and i have a ported box the ported sounds good but would that sould be even better in a banpass box jus wanna know
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A bandpass enclosure will only allow the sub to reproduce efficiently within a certain frequency range (a certain band of frequencies to pass through the port), hence the term "bandpass". For the best accurate acoustical reproduction and power handling, a sealed enclosure is best because of the low group-delay/transient response. Biggest drawback is that subsonic/very low frequecy response is harder to achieve.
A ported enclosure can be tuned to the vehicle's transfer function to get the best possible spl. You can also get more extended low frequency response from a ported enclosure vs a sealed design.
A bandpass enclosure can be built for high efficiency to play a narrow frequency range, or it can be designed to play at a wider frequency range, but at the cost of efficiency. If not constructed properly with correct chamber volumes and port variables, in most cases it will sound much worse than a simple sealed box AND produce lower spl.
So when you ask what sounds better, it all depends on your intentions for your system. Do you want SPL, SQ, or a good medium? For SPL, a properly constructed bandpass enclosure tuned to the subs' Thiele-Small parameters might be best. A sealed enclosure is better for sound quality, and a tuned ported box will yield better spl than a sealed enclosure and a wider frequecy range than a bandpass.

sealed is just safe sound. A *correctly* built bandpass will blow away a sealed box.
im acutally building a new projectit involves 4 15 inch ported
and a 2 door lol
please don't take this the wrong way, but it's really not about which car.
It's how do you want it to sound.
Want SQ and a good driver system, sealed.
Want peaky, and don't mind the room, bandpass
want large output within a certain freq. range, ported.
Also, depends on power and the woofers. Some just don't have the suspension for ported applications.
vehicle type matters as well.. how can you honestly tell me that if you put a ported box in a truck vs a bandpass with a cut thru, that the ported box will be louder.