Hello, folks!
I have been lurking here for a little while, and watching all of the amazing stuff going down,
I thought I would like a piece of that action.
Basically, I am trying to build 2 big honking subwoofers. (The rest of my system is satisfactory for me, but my powered Klipsch 12 just doesn't get it done.)
Based on the general recommendations of this board, I jumped on a pair of B-stock Stereo Integrity ST15D2 woofers, with plans of building 2 individual sealed enclosures, and placing them on either side of the couch. I like bass, and more to the point, I wanted to really have some significant SPL at and below 20Hz.
Here's what I have done so far:
-Bought the 2 woofers.
-Last night (drunk amazon.....) I grabbed a Behringer Europower ep2000 (750x2 @ 4ohm)
I am not at all concerned about form factor. I can build the room around the subs, that makes perfect sense to me. (I have no less than 2 VW engines and multiple transmissions in spare bedrooms. I need a girl.... But, until then, let's have at it!!)
Two questions:
1) I am pretty set on the drivers (at least for now) but the amp was a bit of an impulse purchase. I think it should be better then the inuke line, and I don't really care about a crazy low THD on a sub amp. It is cleaner than the driver will be, so no worries right? I was going to wire the drivers to show a 4 ohm load per channel, and run the amp in 2 channel mode. The amp is rated at 750wpc, and I know the HT15D2 likes about 600wpc, but sealed enclosure should mean that I can feed her some extra power without ejecting voice coils, right?
2) Help with the enclosure. I have always liked sealed enclosures, at least in the car. Tighter, punchier bass, although you will need more power to get the same spl. One of my questions is down firing (a concern given the significant throw of this woofer?) vs front firing. I was assuming that I would prefer a front, so I could rotate it to play with standing waves and whatnot. I considered building one, but the cost of buying required tools meant I would not save anything. I looked at the flatpacks, they were about $90 ea, that was pretty good. Then I met a guy on Craigslist who said he could bang out (2) 3ft^3 enclosures for me for $100 ea. Seems like a no-brainer, since he agreed to put a few braces in, and cover it with black carpet. Long term, I will plan on doing a nicer enclosure, but for now, it is proof of concept, and something to play with that I don't care too much about. I am assuming I will need to play with the location of the subs to get optimal response, and after I have a settled design, I would likely have him re-make me another pair, covered in a nicer fabric or something. Would you guys help me design the enclosure? The kid can build a box, but I am not sure about modelling an enclosure, that's a little beyond what most do.
Unfortunately, I have a copy (bought from Parts Express in 1996) of Vance Dickason's Loudspeaker design cookbook, but I can't find it, and I believe there are lots more resources on the web. I downloaded WinISD, but could not really get it to cooperate with me.
What other info can I provide to help you help me?
Room is 18' x 14', with a slightly vaulted ceiling. The floor is terrazzo, with an area rug in the middle. I can put it on a piece of carpet, but would prefer to cover the box in carpet and have it sit on the floor. If it moves, I'll throw rubber pads underneath.
I put all of my equipment in the 'about me' page, if you want to know anything about my (mostly craigslist) rig.
LOL. Yeah, I want to do this, please: :hsd:
Thanks so much!
-Brad
