Pioneer TS-W309S4 Champion Series 12" 4-ohm subwoofer at Crutchfield
Rockville DV10K52 Dual 10" K5 2400w Car Subwoofers+Vented Sub Enclosure Box/2Ohm, Black
Memphis Audio MOJO MJM844 8" 1800 Watt Competition Car Subwoofer + ROCKBOX - Walmart.com
320K/C-A LF Drivers - B&C Speakers
Design Your Own Reference Bookshelf Speakers : 27 Steps (with Pictures) - Instructables
JL Audio 10W1v3-4 W1v3 Series 10" 4-ohm subwoofer at Crutchfield
Rockford 2014+ Harley-Davidson Dual 10" Saddlebag Subwoofer & Amp Kit — Big Jeff Online Inc
Sundown Audio X10 v2 D2 - Down4sound Shop
2) Rockville W15K9D2 15" 10,000w Car Audio Subwoofers+Vented Sub Box Enclosure
10TW1-2 - Car Audio - Subwoofer Drivers - TW1 - JL Audio
SUNDOWN AUDIO X 18 v.2 - Down4Sound Shop
15SW115 LF Drivers - B&C Speakers
Amazon.com: Rockville VS10K54 10" K5 1200w Car Subwoofer in Vented Sub Enclosure Box - 4 Ohm : Everything Else
13W7AE-D1.5 - Car Audio - Subwoofer Drivers - W7AE - JL Audio
Amazon.com: Dayton Audio DCS165-4 6-1/2" Classic Subwoofer 4 Ohm : Electronics
Amazon.com: Rockville (2) W15K6D2 V2 15" 8000w Subwoofers+Sealed Box+Mono Amplifier+Amp Kit : Electronics
Z v.6 Series
Amazon.com: Rockville DV8K52 Dual 8" K5 1600w Car Subwoofers+Vented Sub Enclosure Box/2 Ohm : Electronics
Sundown Audio U-12 D2 12" 1500W RMS Dual 2-Ohm U-Series Subwoofer
B2 Audio 6.5" Rage (HNX) Subwoofer - Limitless Lithium
Sealed enclosure explained in detail and calculator - Audio Judgement
Sundown Audio X series V.3 size 8" – serious innovations
Sealed enclosure explained in detail and calculator - Audio Judgement
X v.3 Series (2000W)
Refurbished Sundown Audio 8" Xv3 Subwoofer
Rockville W10K9D4 10" 3200 Watt Car Audio Subwoofer + Vented Sub Box Enclosure
