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I depends on "how" you are connecting them. If you connected the 4 ohm speakers in series (positive terminal of one to the negative terminal of the other). This will leave a negative terminal of one unconnected and a positive terminal of the other unconnected. then connect them in parallel (the unconnected positive terminal of the 4 ohm speakers to the positive terminal of the 8 ohm speaker and the unconnected negative terminal of the other 4 ohm speaker to the negative terminal of the 8 ohm speaker. This will produce an overall 4 ohm load for 1 channel (assuming you are connecting to a stereo)
Or if you are connecting to a stereo with two 8 ohm outputs. Connect the 8 ohm to one channel then connect the above mentioned series connected 4 ohm speakers to the other channel for a total load of 8 ohms on both channels.
Parallel connections will equal less than the individual speaker load. The formula for this is: R X R/R + R where R is ohms for each speaker ie. Two 8 ohm speakers in parallel would be 8 x 8 (64)/ 8 + 8 (16) which is 4 ohms.
Series connections you just add them together ie. Two 8 ohm speakers in series would be 8 + 8 or 16 ohms.
FYI. If you measure the speakers with an ohmmeter it will be less than what it says on the speakers.
Speakers are measured in "impedance" which takes into account "reactance". The resistance of the speaker coil will change slightly with different frequencies applied so an 8 ohm speaker may read as 5-7 ohms (more or less) with an ohmmeter. A 4 ohm may read as low as 2.5 ohms on the same meter.
Some output Transformers can handle half the ohms but it is always safer, as a general rule, to go "up" in speaker impedance without any damage. It's not wise to vary any with a system with solid state (transistor or IC) output coupling.
Hope I didn't get too technical. There is lots of good info on the internet about speaker configurations.
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Can you connect a 8 ohm speaker for a amp designed for a 4 ohm load?
You can, but the available power will only be about half of rated, and the frequency response will be slightly different. Better would be to connect two 8 ohm speakers in parallel, making an equivalent 4 ohm speaker.
How do you use 16 ohm monitor speakers with an 8 ohm powered mixer?
Just use it like an 8 ohm speaker or else connect two 16 ohm speakers in parallel to form an 8 ohm load. Parallel is positive to positive and negative to negative.
What you need to connect two 8 ohm speakers to your HD TV?
everything
Can you run 4ohm resistor to make 4 ohms speakers 2 ohm?
Yes, you can safely use a 4 ohm amp with one 8 ohm speaker, but you will not achieve full power. The 4 ohm amp is designed to supply a certain voltage into a 4 ohm speaker. Supplying that same voltage to an 8 ohm speaker will result in half the power, or -3dB. For maximum power, use a 4 ohm speaker, or two 8 ohm speakers in parallel.
Can resistance be added to speakers to make a 4 ohm speaker have an 8 ohm load?
You "can" add a four ohm resistor in series with a four ohm speaker, and make it look like an eight ohm speaker, however, the frequency response will not be the same. It is better to use to correct speaker for the amplifier, or use two four ohm speakers in parallel. That resistors power rating must exceed the rating of the speaker. Half the from the amplifier will go to the speaker, while half will go to the resistor, making it get quite hot.
Can a 4 ohm receiver drive 3 ohm speakers?
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.
Can I connect two 2 ohm speakers to the front channels of my amp and then connect 2 4 ohm speakers to the rear channels of my 4 channel amp?
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 replace a 4 ohm speaker with an 8 ohm speaker can the amplifier blow the speaker?
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.
How do you make a 16 ohm speaker 8 ohm?
You cannot make a 16 ohm speaker into an 8 ohm speaker. You would need to replace the voice coil. You can, however, put two 16 ohm speakers in parallel, and the equivalent impedance would be 8 ohms. The only remaining issue is frequency response, and that's a factor of speaker and enclosure design, so best is to use the exact speaker as originally designed.
How do you wire two 8 ohm speakers and keep a 8 ohm load?
in parallel No. Two 8 ohm 'speakers in parallel present a 4 ohm load.
How do you wire multiple speakers together?
Speakers can be wired in parallel or in series. Take the speaker wire from the output, and wire the speakers like so: (ignore the squiggles, they represent spaces) ----|------| S S ----|------| For a parallel wiring. This will reduce the impedance of each speaker, though, so two ohm speakers should be used insead of four ohm speakers. Wire them like this: ----| S | S ----| for series wiring. This will increase impedance though, so eight ohm speakers should be bought instead of four. You will be fine using four ohm speakers in either case, but will lose clarity.
Can you use car audio speakers with a home audio receiver?
Yes as long as you use the same impedance. Preferably by using an impedance switch if available. Another example I found is as follows: When you run speakers in series - from one speaker to the next - you are adding their impedance's together, so if you connect two 4 ohm cabinets that way, you will have an 8 ohm load.
