View Full Version : single sub vs. dual sub enclosure

big dawg
07-14-2008, 11:45 PM
Hi guys. I will start off by saying that this is my first post. I wanted to introduce myself formally but i didnt see a new member thread anywhere. If i over looked it, I greatly apologize. but a brief bio of myself as well as my question... I have been a big car audio fan for years. Im talking back when pull out radios were the thing... Anyway, I recently got on the other side of the counter and began working at a local stereo shop here in cincinnati. I have taken quite a while but i finally decided to build my first enclosure. I ended up building a vented box tuned to 35hz. It is 6 cubic ft. I am running two diamond audio D6 15's. I have a diamond audio D31000.1 amplifier on each sub. I think they sound and hit great! Especially for my first box(with minimal help). However a couple of the guys that i work with that have waaaaay more experience and skill than i do said that a box the size of mine would be better for a single 15 and that i need to build one bigger. I was so confused because It is what diamond says is the perfect amount of air space. Do you guys agree or disagree with them? Shoul I rebuild a box that big for just one sub? All replies would be greatly appriated. I am very excited about learning from anyone that is willing to spend time with me on any aspect of my new field. Even more, I hope that one day, I can contribute even more.

07-14-2008, 11:48 PM
Well I think the enclosure size needed is somewhat dependant on the sub.

But I think that 3cf per 15" is "normal"

07-14-2008, 11:57 PM
I highly doubt those subs need 6 cubes each. Look up the recommended box specs for them, but I'm guessing 3 cubes is pretty close...

big dawg
07-15-2008, 12:01 AM
Thanks for the quick response guys! I really appreciate it. Yeah, I agree with you. I called diamond and told the what i was running and they told me the same... build it to 6 cubes. So hearing experienced box builders tell me that my box was too small made me feel as if there was something that i didnt know. Like the manufacturers just kinda give you safe specs for enclosures just to make them loud but not musical or something. Are there different vented box types? I have heard of someone mentioning a transmission line box, and an maze vent... I want SQL but i would love to be able to compete in db drag in small local competitions.