240 ohm - 1 Watt Metal Film Resistors 1% Tolerance(Pack of 100): Amazon.com: Industrial & Scientific
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Amazon.com: 8 ohm 100 watt resistor
Amazon.com: Pyle 6.5 Inch Mid Bass Woofer Sound Speaker System - Pro Loud Range Audio 300 Watt Peak Power w/ 4 Ohm Impedance and 60-20KHz Frequency Response for Car Component Stereo PLG64 : Electronics
Amazon.com: 10 watt resistor
Amazon.com: AudioPipe TXX-BDC4-12D 12 Inch 2,200 Watt High Performance Powerful Dual 2 Ohm DVC Vehicle Car Audio Subwoofer Speaker System, Black : Electronics
Amazon.com: KICKER CSC65 CS Series 6.5 Inch 300 Watt 4 Ohm 2-Way Car Audio Coaxial Speakers System with Polypropylene Cone, PEI Tweeters & EVC Technology, Pair : Electronics
Volt/Amp/Watt/Ohm - Calculator:Amazon.com:Appstore for Android
Amazon.com: CQRobot Speaker 3 Watt 8 Ohm Compatible with Arduino Motherboard, JST-PH2.0 Interface. It is Ideal for a Variety of Small Electronic Projects. : Everything Else
Amazon.com: 10" Car Audio Speaker Subwoofer - 1000 Watt High Power Bass Surround Sound Stereo Subwoofer Speaker System - Non Press Paper Cone, 90 dB, 4 Ohm, 50 oz Magnet, 2 Inch
Amazon.com: Planet Audio AC1200.2 2 Channel Car Amplifier - 1200 Watts, Full Range, Class A/B, 2-4 Ohm Stable, Mosfet Power Supply, Bridgeable : Electronics
Amazon.com: Lanzar Amplifier Car Audio, Amplifier Monoblock, 1 Channel, 3,000 Watt, 2 Ohm, MOSFET, RCA Input, Bass Boost, Amplifier for Car Speakers, Crossover Network - HTG157 : Everything Else