This explanation seems clear and helpful, but isn’t there a confusing typo in your two examples of how to compute impedance? Wiring a 4 ohm amp to a 2 ohm speaker is done often by car stereo enthusiasts. When connecting pairs of speakers with different ohm ratings, a few simple calculations can help you avoid burning out your equipment. The amplifier can only operate correctly if the amp is wired to the speaker the right way. Subwoofers play a huge role in a car audio system. The lower the impedance, the more efficiently it allows the electric signal, which is basically the music, to pass through the speaker. Connect the negative wire (this wire should be marked with white) into the negative inputs on the amp and speaker (the negative inputs should be marked white). Copyright 2020 Leaf Group Ltd. / Leaf Group Media, "Car Audio for Dummies;" Doug Newcomb and Mike Mettler; 2008, "Car Stereo Cookbook;" Mark Rumreich; 2005. No power should be going to the amp or the speakers. This is because subwoofers are specially desig Step 1 Turn around each speaker you'll connect to the amp or receiver to check the ohm rating printed on the back. This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. These steps are the most common way to hook up a 4 ohm amp and a 2 ohm speaker. Connect the battery. Different speakers and amplifiers will have different ways to hook them up. Although the examples refer to a setup that has two 4-ohm speakers and one 6-ohm speaker, the numbers plugged into the formulas are 4, 4, and 8. As an Amazon Associate I earn from qualifying purchases. Take into account the path that you will use to run the wire to and from the amp and the speaker. The speakers you connect to your stereo make up part of the amplification circuit. No power should be going to the amp or the speakers. Turn on your amp and speaker. https://electrowebs.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com Your music goes out to the speakers and back to the amp as an electrical signal. The speaker wire itself adds some resistance or impedance to that circuit, and the speakers add more.Your stereo's amplifier is designed to work with speakers of a certain impedance or, in some cases, within a given impedance range. Strip the wire 1/4 of an inch on each end. Make sure that power is going to your amp and speaker. To submit your questions or ideas, or to simply learn more about It Still Works, contact us. Improper wiring can cause malfunction of the amp and speaker. Cut the length of speaker wire that you will need to go from the amp input to the speaker input. Disconnect the battery. Traditionally home stereo speakers hav… Disconnecting the battery is something that every one should do before doing any electric work on their car. Make adjustments. Connect the positive wire (this should be a wire marked with red) into the positive input of the amp and the speaker (the positive inputs should also be marked red). You will insert the ends of the wire into the amp and the speaker wire terminals. To get the best sound quality out of your car stereo it is imperative that you wire the cars audio system correctly. They add punchy bass, something that regular speakers can’t. But if you do the reverse to hook up a 2 ohm speaker to a 4 ohm amp then you'll running the risk of over heating your amp as now your amp will need to work twice as hard to push a 2 ohm speaker. Disconnect the battery.