You can, but its power output will be a bit higher than its 8 ohm rating.
This depends on your amplifier's specifications. i would recommend looking in the amplifier's service manual to avoid disapointment or damage to your amplifier or speakers.
If you connect three 4 ohm speakers in parallel, the amplifier would see a load of about 1.3 ohms. This definitely could damage the amp if you drive it too loud.
There is really no amplifier on the market which has an output impedance of 4 ohms. The impedance of an amplifier is always less than 0.5 ohms. We do not use matching, we use bridging when we connect the amplifier to the loudspeaker. Scroll down to related links and look at "Interconnection of two audio units".
A1: The output impedance of a power amplifier is always less than 0.1 ohms. There are no 4 ohm amplifiers on the market! A2: I actually just bought a new car radio/CD player that specifically shows 4 ohm speakers on the sticker. It is designed to work optimally with 4 ohm speakers. If you use 8 ohm instead, it will work, but you will not get the full power output that is specified. The amp can only kick out so much voltage and so much amperage - if it is designed for 4 ohm speakers, and 200 watts (stereo, so 100 watts per speaker), it can supply 20 volts (P = V^2 / R). If you used 8 ohm speakers to this amplifier, each speaker would only get 50 watts powered at full output voltage. Alternatively, if it is designed for 8 ohm speakers and 100 watts per speaker, it can provide 40 volts. If you used 4 ohm speakers instead, each speaker could be given 200 watts at 40 volts, resulting in severe overheating and damage to the amplifier.
The TV will need to have AUDIO OUTPUT jacks to connect to the speakers or a amplifier to power the speakers and subwoofer.
Yes, but you should be careful not to exceed the amplifier's mininum impedence rating for each channel. If your amplifier is rated down to 4 ohms, you cannot connect more than two 8-ohm speakers on to each lead. Doing so will damage the amplifier. Connecting two 4-ohm speakers will drop the impedence down to 2 ohms, which is lower than most home amplifiers will tolerate.
If you connect four four-ohm speakers in parallel, the impedance will be equal to 1 ohm, and will allow the speakers to run at the advertised watt RMS. The equation is 1/(total impedance) = 1/(impedance 1) + 1/(impedance 2) and so on. Parallel is like this: Power source: + Speaker+: + + + + Speaker-: - - - - Power source: - However, usually if you hook up a 4 ohm speaker to a 1 ohm amplifier, it would still function it would simply not provide nearly as much wattage as it would have otherwise. Also, if your speakers are dual voice coil (like many subwoofers) you could use 2 4 ohm speakers, connecting the two voice coils on each speaker in parallel and then connecting the speakers themselves in parallel.
Sorry, but there is no 2 ohm amplifier on the market, when you mean the output impedance. The impedance is always 0.5 ohms or less. We don't use impedance matching, we use voltage bridging. Scroll down to related links and look at "Interconnection of two audio units - power amplifier and passive loudspeaker".
That would make a total of 20 speakers. Sony sells no such system, nor do they sell an amplifier that can connect that many speakers.
There is no 8 ohm solid state amp. Really! The output impedance of such an amp will be arround 0.4 ohms. Scroll down to related links and look at "Interconnection of two units- Voltage Bridging - Zout < Zin".You can, as long as the amp's impedance is much lower to the speaker(s) total ohm load you're fine. We have never impedance matching there.
No. All amplifiers have a current limit and a minimum impedance rating. Most home stereos cannot connect more than 2 8 ohm speakers in parallel. Connecting more can seriously damage the amplifier.
A1: The output impedance of a power amplifier is always less than 0.1 ohms. There are no 8 ohm amplifiers on the market! A2: I actually just bought a new car radio/CD player that specifically shows 4 ohm speakers on the sticker. It is designed to work optimally with 4 ohm speakers. If you use 8 ohm instead, it will work, but you will not get the full power output that is specified. The amp can only kick out so much voltage and so much amperage - if it is designed for 4 ohm speakers, and 200 watts (stereo, so 100 watts per speaker), it can supply 20 volts (P = V^2 / R). If you used 8 ohm speakers to this amplifier, each speaker would only get 50 watts powered at full output voltage. Alternatively, if it is designed for 8 ohm speakers and 100 watts per speaker, it can provide 40 volts. If you used 4 ohm speakers instead, each speaker could be given 200 watts at 40 volts, resulting in severe overheating and damage to the amplifier. This applies to your case as well: it is OK to hook up higher impedance speakers to a lower impedance amplifier, but you will get less power delivered. If you do the opposite (lower impedance speakers to higher impedance amplifier), keep the volume low or you could burn out the amp.