There is really no 4 ohm or 8 ohm amplifier on the market with an output impedance of 4 or 8 ohms for power matching. You will find there 0.4 ohm or less for voltage bridging. There is really no 4 ohm or 8 ohm amplifier on the market with an output impedance of 4 or 8 ohms for power matching. You will find there 0.4 ohm or less for voltage bridging.
wire two 8 ohm speakers in a parallel circuit!
16 Ohms. Yes 16 ohms in series. 4 ohms in parallel
There is no single standard. Many computer speakers are rated at 8 ohms while others are 16 ohms or higher. My computer subwoofer here is 4 ohms.
Though it is tempting to say the difference is 2 ohms (8 ohms minus 2 ohms equals 6 ohms), lets look at some things. The 6 ohms is 3/4ths the resistance of the 8 ohms. If the resistances are loads, the 6 ohm load will draw 1/3rd more current than the 8 ohm load. The 8 ohm load will draw 3/4ths as much as the 6 ohm load. Those are some differences between 6 ohms and 8 ohms.
Two 8 ohm speakers in parallel is 4 ohms, and the power will be split between them. However, unless the amplifier is rated for 4 ohm operation, you will not get the same total power out of the amplifer as you would with an 8 ohm load.
Car stereos are designed for 4-8 ohms loads unbridged (8 ohms bridged). So wire it for 4 ohms. If you use a separate amp for the speaker then refer to the amp's documentation - most are designed to operate with standard 4 ohms unbridged and may also have provision for 2 ohms unbridged (or 4 ohms bridged).
It has to do with the load on the amplifier, you can't hear the difference.
wire two 8 ohm speakers in a parallel circuit!
You need to match the speaker with the amplifier. Better or worse is not the question. The question is dynamic range and the possibility of overloading the amplifier. If the amplifier is rated 4 ohms, use a 4 ohm speaker. Same for 8 ohms. Do not "mix and match".
16 Ohms. Yes 16 ohms in series. 4 ohms in parallel
The nominal 8 inch speaker impedance can be 4 ohms, 8 ohms or 16 ohms. It depends on the make of the loudspeaker not on the 8 inches.
Use 5.2 ohms, which is the closest to 8 ohms.
There is no amplifier with an output impedance of 8 ohms or 4 ohms on the market. All audio amplifiers really have an output impedance of less than 0.1 ohms. Scroll down to related links and look at "Amplifiers, loudspeakers and ohms"
Most home speakers are rated at 8 ohms, but your receiver should be able to work speakers as low as four ohms, with reduced output. Car stereos are normally 4 ohms, but should work up to eight ohms, with reduced output. It's all in the design of the electronics.
The wattage and ohms of a speaker are not related; the resistance for speakers is usually 4 or 8 ohms.
Home stereo systems are usually built to work with speakers that have an impedance of 8 ohms, Car stereos are usually adapted to power 4 ohm speakers. You need to get this right if you want to keep your amplifier happy.
There is no single standard. Many computer speakers are rated at 8 ohms while others are 16 ohms or higher. My computer subwoofer here is 4 ohms.