Infinity KAPPA 800W 8" Selectable Impedance (2 or 4 ohms) Subwoofer - Walmart.com
Speaker SB Acoustics SB34NRX75-6, impedance 6 ohm, 12 inch
Memphis Audio M71012 M7 Series 10" subwoofer with selectable 1- or 2-ohm impedance - Breakers Stereo and Performance
Amazon.com: Pyle Car Subwoofer Audio Speaker - 8in Non-Pressed Paper Cone, Black Plastic Basket, Dual Voice Coil 4 Ohm Impedance, 800 Watt Power and Foam Surround for Vehicle Stereo Sound System -
Infinity REF1200S Reference 12 Inch Low profile Subwoofer with SSI (Selectable Smart Impedance) - Creative Audio
Subwoofer Wiring Wizard
Amazon.com: DS18 EXL-X12.4D Subwoofer in Black - 12" Speaker, 2,500 Max Power, 1,250 RMS Power, Fiber Glass Dust Cap, Red Aluminum Frame, Dual Voice Coil 4+4 Ohm Impedance, Treated Rubber Edge (1
Amazon.com: Lanzar 6.5” Car Subwoofer Speaker - Black Non-Pressed Paper Cone, Aluminum Voice Coil, 4 Ohm Impedance, 600 Watt Power and Foam Edge Suspension for Vehicle Audio Stereo Sound System - MAXP64 : Electronics
The Complete Guide To Speaker Impedance (2Ω, 4Ω, 8Ω & More) – My New Microphone
Memphis Audio MB1224 12" subwoofer with selectable 2- or 4-ohm impedance - Breakers Stereo and Performance
Amazon.com: DS18 SLC12S Car Subwoofer Audio Speaker - 12" in. Paper Glass Fiber Cone, Black Steel Basket, Single Voice Coil 4 Ohm Impedance, 500W MAX Power and Foam Surround for Vehicle Stereo
Subwoofer wiring diagrams
Matching Subwoofers With Amplifiers: Calculating Subwoofer Impedance | MTX Audio - Serious About Sound®
Amazon.com: Lanzar 12in Car Subwoofer Speaker - Black Non-Pressed Paper Cone, Stamped Steel Basket, Dual 4 Ohm Impedance, 1600 Watt Power and Foam Edge Suspension for Vehicle Audio Stereo Sound System -
Amazon.com: H YANKA 10 Inch Subwoofer - 10 Inch Paper Cone Subwoofer Car Audio, Black Steel Basket, Dual Voice Coil 4 Ohm Impedance 10 subwoofer, 1000W MAX Power 10 inch Competition Subwoofer : Electronics
Wiring subwoofers — what's all this about ohms?
Subwoofer Wiring Wizard
300W RMS, 600W MAX 2-Ohm Impedance 12 Inch / 300mm Shallow Subwoofer - DMD122SH
What Impedance Should I Wire My Subwoofer? - Sonic Electronix Learning Center and Blog
How to Wire a Dual 2 ohm Subwoofer to a 1 ohm Final Impedance | Parallel Wiring | Car Audio 101 - YouTube
Woofer measurements
2 Ohm Vs 4 Ohm Subwoofers - Which Is Better?
