I built this sub a couple of weeks ago for the HT setup in my parents new house that will be completed in April. They were at my house over Christmas and watched a few movies when my dad decided that he needs a decent bit of sound for their new home. I will be making 7 other enclosures for the 7.1 and two for the lenai. All of this needs to be stealth in design, with the surrounds behind screens in the ceiling and the LCR, sub, and electronics in a 9' long, 24" x 24" cabinetry below the screen. All behind acoustic fabric or cabinet doors that my dad will build. Not a perfect room, not perfect THX positioning, but I'll try to get them close with some good equipment. I'm making a bastardization of the Zaph ZDT for the LCR, and the Meniscus Classix II for the surrounds. Power to the 7 is Onkyo 709.
Completed:
http://s20.photobucket.com/user/ocd_reef/media/Home Theater/IMG_3392_zps5c24eb4f.jpg.html
SI 18 D2D2
Re: 3.5 Ohms
Fs: 17 Hz
Qes: 0.41
Qms: 5.8
Qts: 0.38
Le: 3.2 mH
Sd: 117841 mm^2
Vas: 411.9 l
BL: 19.7
Mms: 416 g
Cms: 208.8
Sensitivity (1W/1m): 88.7 dB
Recommended enclosures: 18"
Sealed = 6 ft^3
Ported = 7 ft^3 tuned to 20 Hz
Cutout: 16.7"
OD: 18.5"
Mounting depth: 9.5"
Mounting flange to top of surround: 1.5"
Displacement: 0.25 ft^3
I used a single SI 18 D2, which is a 2x2 DVC driver wired in series for a load of 4 ohms at the amp.
The amp for this is a Behringer iNuke NU1000DSP, which I am very unfamiliar with, but I know that it claims to offer 1000w at 4 ohms bridged. To protect the driver, the gain will have to be cranked down to provide a max of 600w. In reality, the driver should be able to handle much more power for x-mech, but for the planned 6 cubic foot sealed enclosure, thermal handling is the issue with more volts. This amp has some DSP, so I look forward to learning how to use that. I found a mod for a quiter fan, Nexus 80mm Real Silent Case Fan - SP802512L-03. I wanted to go with the EP4000 since I have 3 of them on the subs at my house and love them for their power and dependability. Since SI designed this to be an efficient HT sub, 600w is all it needs, 750w for peaks.
The enclosure is sealed due to my height and depth requirements of the cabinetry in which the sub will be housed. I can go 22.5" high, 24" from to the wall, and around 24" for the width for the sub to slide in to. So, the outside dimensions of the enclosure will be 22" tall, 22" deep, 26" wide, internal 19x20.5x22.5. This will allow me to have a double layer baffle and single layer surround, with single layer walls for the rest. This makes for 5.07 cubes on the inside, and I will stuff with 6# of polyfill to make up for the other 1 ft., for a total of 6(ish) cubes. The material is 3/4" MDF and finished with Kilz primer and Rustoleum Truck bed coating.
Completed:
http://s20.photobucket.com/user/ocd_reef/media/Home Theater/IMG_3392_zps5c24eb4f.jpg.html
SI 18 D2D2
Re: 3.5 Ohms
Fs: 17 Hz
Qes: 0.41
Qms: 5.8
Qts: 0.38
Le: 3.2 mH
Sd: 117841 mm^2
Vas: 411.9 l
BL: 19.7
Mms: 416 g
Cms: 208.8
Sensitivity (1W/1m): 88.7 dB
Recommended enclosures: 18"
Sealed = 6 ft^3
Ported = 7 ft^3 tuned to 20 Hz
Cutout: 16.7"
OD: 18.5"
Mounting depth: 9.5"
Mounting flange to top of surround: 1.5"
Displacement: 0.25 ft^3
I used a single SI 18 D2, which is a 2x2 DVC driver wired in series for a load of 4 ohms at the amp.
The amp for this is a Behringer iNuke NU1000DSP, which I am very unfamiliar with, but I know that it claims to offer 1000w at 4 ohms bridged. To protect the driver, the gain will have to be cranked down to provide a max of 600w. In reality, the driver should be able to handle much more power for x-mech, but for the planned 6 cubic foot sealed enclosure, thermal handling is the issue with more volts. This amp has some DSP, so I look forward to learning how to use that. I found a mod for a quiter fan, Nexus 80mm Real Silent Case Fan - SP802512L-03. I wanted to go with the EP4000 since I have 3 of them on the subs at my house and love them for their power and dependability. Since SI designed this to be an efficient HT sub, 600w is all it needs, 750w for peaks.
The enclosure is sealed due to my height and depth requirements of the cabinetry in which the sub will be housed. I can go 22.5" high, 24" from to the wall, and around 24" for the width for the sub to slide in to. So, the outside dimensions of the enclosure will be 22" tall, 22" deep, 26" wide, internal 19x20.5x22.5. This will allow me to have a double layer baffle and single layer surround, with single layer walls for the rest. This makes for 5.07 cubes on the inside, and I will stuff with 6# of polyfill to make up for the other 1 ft., for a total of 6(ish) cubes. The material is 3/4" MDF and finished with Kilz primer and Rustoleum Truck bed coating.