Four-ohm speakers are another story, they can place higher demands on 6- or 8-ohm rated receivers and amps' power reserves, but even those receivers/amps won't run into trouble with 4-ohm speakers, as long as you're not playing music or movies at a very loud volume. Look at the graph one more time and you'll see this 6 ohm rated speaker is rarely 6 ohms. Andrew Jones thinks some speaker buyers fret too much about impedance, especially when they're considering buying 6- or 8-ohm rated speakers. Your email address will not be published. Your email address will not be published. I wouldn't blame you if you assumed an 8 ohm speaker is always 8 ohms, but it's not. ALL RIGHTS RESERVED. It’s a kind of electrical “friction” to the movement of electrons through the copper wires in your speakers. We measure impedance in “ohms,” named after George Ohm, the German physicist. If speaker impedance is too low, too much current will run through the AV receiver’s output transistors, causing the receiver to overheat and shut down. No wonder speaker impedance confuses lots of buyers! We delete comments that violate our policy, which we encourage you to read. Current has to flow through your loudspeakers, but we certainly don’t want them or the speaker cables to heat up and waste all your amplifier power! The rating is a shorthand that's mostly concerned with a speaker's lower impedances. Far from it, an 8 ohm rated speaker is actually 8 ohms only a small percentage of the time because the speaker's impedance varies, depending on the frequencies the speaker is playing at any given moment. This is an impedance graph for a 6 ohm speaker. We roundup 7 audiophile CD players for when it's time to upgrade. To give you an analogy, let’s imagine that the music you are listening to is water. In a loudspeaker, current does all the work; voltage is the “push” behind the current, kind of similar to the way water pressure (voltage) forces the water (current) through a hose. Streaming digital music from an audiophile-grade component will not only sound better, but provide greater multi-room functionality. In the most literal definition, ohms (Symbolized as Ω) is the term used to represent the impedance of a speaker. Simple, right? It’s a kind of electrical “friction” to the movement of electrons through the copper wires in your speakers. Discussion threads can be closed at any time at our discretion. (Speaker Ohm ratings explained) Speaker impedance, measured in Ohms, is the voice coil’s total resistance to the flow of electric current as it operates with a musical signal. But even if you pushed the volume too high for a party the receiver/amp's protection circuits would likely shut down the receiver or amp before any damage was done. If you get 4-ohm speakers, make sure your AV receiver is able to drive them easily without overheating. THD is a measure of distortion; how accurately a … Those speakers are in the sweet spot for amp matching, no worries there. We want the electric audio signals to drive the speakers to produce great sound. Unlike standard electrical conductors, the voice coil’s wire winding forms a … But that rating is just a baseline. Georg Ohm (1789-1854) developed the formula for relating Ohms, Amps, Watts and Volts. Typical speakers have impedance ratings of 4 ohms, 8 ohms or 16 ohms. A 4-ohm speaker draws more electric current through your AV receiver’s output transistors, and since more current equals greater power, 4-ohm speakers tend to have greater dynamic range and play louder more easily than 8-ohm speakers.

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