Does anyone know what the diffrence between vented and tunedbypass for subwoofers?

Question

what is the difference between tuned bypass and vented enclosures, i was looking for a subwoofer box for my 2 12" rockford p2's. i was looking at some online and it says its tuned bypass not vented . please help

Answer 1

I'd understand anyway...

The difference is that you have visible speaker in classical vented box. Speaker is the first device making sound, so it has lowest distortion. when the speaker is playing in the direction to your head, you have exact and less distorted sound.

In bandbass box, you have speaker inside the box, and only thing whats playing are bassreflex holes. But the way from the speaker to your head goes trough the vent holes which less or more are distorting the sound. second disadvantage is, that you usually cannot see what the speaker does, so sometimes you can destroy it by linear excursion overload because you could not see or hear it.

overall - it needs more patience and knowledge when building some...

//edit: not all speakers work with all enclosures. speakers with low Qes and Qts will not play deep bass mounted in sealed box. They need to have vented or horn box.

Answer 2

Sealed boxes: For deep, precise bass

A sealed box is an airtight enclosure housing your subwoofer. A sealed box is best for any music that demands tight, accurate bass. Expect flat response (not excessively boomy), deep bass extension, and excellent power handling. Since a sealed enclosure tends to require more power than a ported box, use an amplifier with ample wattage for optimum performance.

Ported boxes: For forceful bass

Ported boxes use a vent (called a port) to reinforce low bass response. You get more output than you would from a sealed box at any given amplifier wattage. Some people prefer the sound of ported boxes for rock, heavy metal, rap or any hard-driving music. Ported boxes can deliver deeper bass than sealed boxes, though they need to be much larger than sealed enclosures to accomplish that.

Bandpass boxes: Maximum slam!

Bandpass boxes are a special type of ported box designed for maximum slam. The woofer is mounted inside a dual-chambered box (one chamber sealed, the other ported), with the sound waves emerging from the ported side. The sound that comes out of the port is extra loud within a narrow frequency range.

Because bandpass boxes are super efficient within that range, they tend to boom. Their aggressive sound is great for rap, reggae, and hard rock. Not all subwoofers work well in bandpass boxes, though, and mostly sound sloppy if not tuned correctly.