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What happens if you use 4 ohm speakers with 8-ohm amp?
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.
What’s the difference between 4 and 8-ohm speakers?
A 4-ohm speaker requires more power from an amplifier than an 8-ohm speaker to produce the same loudness of sound. This is due to the relationship between voltage, current and resistance in electronic circuits; for a given voltage, a lower impedance means a greater current.
Why is mixing speakers with different impedances a bad idea?
This is because it will draw more current than the power supply is designed to deliver. At that point, the amplifier will shut itself down before it causes too much damage. Therefore, if possible, you should try to match the impedance of your speakers to the impedance the amplifier is designed to drive.
What does it mean when Speaker is specified as 4-8 Ohms?
When a speaker is specifies as 4-8 Ohms, it means that the impedance, which is a function of frequency, varies between a nominal 4 Ohms and a nominal 8 Ohms. No statement is made as to the actual impedance at any specific frequency, or whether it’s “more like” 8 Ohms or “more like” 4 Ohms “more of the time”,…
What’s the resonance peak of a 4-8 Ohms speaker?
If you look at the fs specification in the chart above the graph, you will see that the Resonance Peak is at 30.3hz. The lowest dip to the right of the peak is at about 150hz and is about 7 ohms. With cabinet loading the dips could be lower. Likely that is what is happening with the 4-8 ohms speaker.
Can a 4 ohm speaker be used in a car?
Generally home audio uses 8ohm speakers and car audio uses 4 ohms or 2ohms. Most likely you car audio head unit or amplifier is going to be designed for 4 ohm speakers, but its OK to use an 8 ohm speaker on them.
What is the impedance of a 20kHz speaker?
For the record, the impedance right at the resonant peak is 71 ohms, and at 20khz, it is about 85 ohms. Though, in all likelihood, components have been added to the crossover to keep the impedance of the woofer closer to 8 ohms as the frequency rises.