I am slowly building up my first real HT system Started by scoring a deal on a new Pioneer VSX-1022 receiver. Next I am upgrading my crappy RCA 32" LCD tv to a Samsung 51" plasma. Front stage is currently a pair of JBL Control 25s for the L+R and a pair of Klipsch Quintet sats that I have wired in parallel for the center channel. They are placed one on each side of my receiver for now until the new display gets here. No rear surround as of yet but I will probably go with the Monoprice 4929 8" 2way in ceiling for budget reasons. Only doing 5.1 at this time.
So on to the subwoofer. What I have is 4 CDT Audio MS-80 8" subwoofers that were intended for car audio. You may be familiar with these but they were high end SQ subs about 10 years ago. Made for a small sealed enclosure with .25-.45 ft^3 airspace and very efficient (90db). Here are all of the specs I have on them, which isn't much.
8" Minibox Subwoofer
Power handling: 100/200
Frequency response: 30Hz-500Hz
Box volume:Sealed Airspace .25-.45 cubic feet
That's it. I even email CDT for the T/S parameters and they don't have them. So I have all intentions of measuring these myself when I get a chance but CDT support forwarded my email to someone internally who suggested that for HT use I should use 4 of the 8" MS-80 subs in a single enclosure with 2.0 cu ft airspace. They are 4 ohm drivers so I can do a series/parallel to present 4Ohms to my amp which is rated at 300 watts RMS into 4 Ohms.
For spousal approval I need to buld a shallow downfiring enclosure that will fit UNDER the coffee table that we are using as an AV stand. See pic. I have 10" clearance under the table, so an enclosure that is 8" high x 28.75" wide x 21" deep (exterior dimesions, 3/4" MDF) gives me 1.999 cu ft volume with enough clearance for 1.5" feet.
Attached pic shows one 8" in a test box I had laying around and the table that the new enclosure will go under. You can also see one of the Klipsch Quintet sats and the Pioneer. (Please ignore the 10" Alpine sub that came out of my Jeep, I was just curious I'm fairly impressed with just a single 8" in a non optimum box (it's too big by 2x) so have decided to go forward with the real deal. Also ignore the hanging wires, we just moved back into the house last week after a complete renovation and I haven't gotten around to snaking the cables into the walls yet.
I'll try to update as I go along with build pics.
Any suggestions about anything feel free to chime in.
TIA, K subsmall.jpg 31k .jpg file