twistedsickness

Hey everyone a noob here Im building a new box for my car this will be my frist ported box. I just need some help on it. dont know if there any other way of builiding a box but anyways its going into a Honda Civic SI and Room is limited i think. Im putting in 2 Tartntula subs and on the spec sheet it tells me for high quality go L20.5xH14.0x13W and for sound quality L30xH14xw13

So my question is there differnet ways on building the box ported and which way should i go? and how big should i go im very clueless. thanx alot.

Thanx

boombox

iTrader: (4)

are the specs for one sub or 2 ?? if i were u i would build it the second way and calculate the port and tune it to around 35hz =[ that would make your honda rattle like a mad dog in a cage

twistedsickness

2 Tarantulas @900rms 2300 Peak@1ohm, and the amp is going to be the Picasso 3500RMS Class D 1@ohm. More info and if that deck needed its a Alpine 9855 I have a 8 fered cap Im still not sure if i want 2 more sub to make a total of 4

Dev

iTrader: (1)

You should probably read up on how ported boxes work...I think that the JL audio site has some explanations on it. Basically you can tune your box to a certain frequency using a port. For the two boxes you listed, you didn't give any specs on the port size. SPL is tuned higher, for louder, boomy bass, but can't hit that low. SQ is tuned lower, to hit very low frequencies, and has a flatter response curve rather than a peaky one for SPL. I have my box tuned to 30hz and I think it's a little too low, because it doesn't hit the main bass hard enough. I think 35hz would be a good idea to go with, as boombox mentioned.

Based on the volume of your box, net of the driver displacement, bracing, and port volume, you need to calculate the area and length of the port.