Post by
BaliLover »
https://forums.nicoclub.com/balilover-u6785.html
Sun Jul 18, 2004 2:52 pm
A ported box always requires more airspace for the same subwoofer. ALWAYS. For example (this is from memory), a JL Audio 10w3 requires a sealed box that is 18" wide, 11" tall and 10.25" deep, where as the ported box requires 23x12x14. Thats quite a bit of difference in terms of airspace, nearly double. All this for a speaker with a continuous power handling ability of a mere 300w.
Now we'll look at the JL 12w7 which can handle 750W of continuous power. It only requires 22.75" of width but requires 15.5" of depth and 15.5" of height to get the correct airspace. So here we have 1 subwoofer that won't fit under the security cover if you mount it horizontally, so you'll have to mount it on an angle to get it under the cover. This will increase the depth needed, but you also can't put too much angle on it or there won't be enough depth to mount the speaker. And thats just ONE speaker, 2 would take up quite a bit more room and you'll still need a place to mount your amplifer (if your amp is putting out a TRUE 1400w its not exactly going to be small, and you won't want to mount it to the box as this increases the likelyhood that its internals will begin to rattle loose and the amp will fail, I've killed 3 PPI amps that way)
The problem with this scenario is that instead of focusing on a setup that will fit your area and give you the bass you want, you are requiring 2 subs of a certain size in a certain style box. I've got a single 10w3v2 running at 3ohms in a sealed box running roughly 250w and it hits pretty hard. If you were to run even 500w to it at 2ohm it would slam. You said you wanted cheap but good, the 2 don't go hand in hand. Most cheap amps are overrated, and theres no one out there verifying the power levels of them. Most cheap subs can't handle real power. To top that off, a well built BASIC ported box for 2 12" subwoofers made from 3/4" MDF and well sealed is going to be around $200.
If you've already got the subs and amps, I might suggest selling them and looking into a single JL 12w6, they require less space than most and can handle decent power. They also put out nice clean bass. Get a single 12W6, push a true 500w-700w max to it in the properly sized ported box and I bet you'll be surprised.