A buddy had some cash left over after a recent HT remodel. He asked that I suggest what next to take his cinema to the next level within his budget?
So naturally, after recent successes with my Alpine based budget builds
, I suggested a budget build, and with the DCS450-4 18" sub on sale recently, I pointed him towards this driver.
$250AUD later I landed this very nice looking driver (for the money) in Aus and made preparations for a build.
Enclosure is approximately 190 litre net ported - maximum size for his back of room location with dimensions dictated by available space. I used 30mm ply for this build as its great to work with, light and flex free.
Here are my sketch ups, measurements in centimeters:
Cut sheet also centimeters ....
WinISD model tuned to approx 21hz...
Driver looks great, fixing holes are hard up against the frame edge meaning about 30% of the circumference of the holes has nothing for the fasteners to hold against, but otherwise its great....
Our local Bunnings hardware has a great panel saw, $1 cuts are a bargain!
I love PVA
Just one brace, I felt that with the 30mm ply even the one was possibly unnecessary?
Home made circle jig...
Now I was impressed with the size of the Alpine 15's
having come from Alpine 12's
but 18" is next level big...
And this thing is way too big for my modest digs...
So no measurements yet. That will come once installed in my friends place. Subjectively it has plenty of extension, is appreciably more efficient than the Alpines and has that big sound I can't quite describe that big speakers make. I haven't been able to crank it with the family about the house this week so I'm excited to see how it fairs in its home with some EQ from his DCX2496.
For about $450 in parts for the sub and box, about $550 for an XLS 1002 (to be bridged and high passed at 20hz with the DCX2496 for driver protection) makes this a very high value proposition. I really don't know of any commercial product available in Aus for HT in an 18" option.
Overall I'm extremely pleased with this project, fun and rewarding! Hope this is of some use for others. Comments and suggestions are always appreciated.
Edit: Now installed and measured.
All of these measurements taken with a LR HPF @ 20hz. I only applied cut filters to get this result, no boosts were applied despite getting a lot more output in the 20-40hz range.
No bad noises to report after a solid session with a bridged XLS1002 running into it..... yet! This is a very nice driver.