You get more power by wiring the speakers in parallel, but you need to verify that the amplifier can handle that configuration or you may blow the amp.
They'll work, but could blow.
No, a 15 watt amplifier would not be able to properly power 300 watt speakers. The amplifier's power output should ideally match or exceed the power handling of the speakers to ensure they can function properly and avoid potential damage. It is recommended to use an amplifier with power output closer to the speakers' rating for optimal performance.
You have to be careful when installing power converters in your car. Installing the wrong type could blow up your speakers or not give them enough power to work properly which will in turn damage them.
It's entirely possible to use four 70W speakers with a 150W amplifier but the method will depend on the speakers and the amplifier specification. We will assume that the amplifier will deliver up to 150W per channel, so two speakers will be used on each channel. If the amplifier is rated to drive a 4 ohm load, then two 8 ohm speakers can be wired in parallel and connected. In this instance, take care NOT to drive the amplifier too hard. It will overdrive the speakers at about the same time that it will begin to show a distorted output. This is a condition that can easily damage speakers so be very conservative with the volume control. If the speakers are 4 ohm speakers, they can be wired in series to provide a total impedance of 8 ohms. If the amplifier is rated to deliver 150W into 4 ohms, then the total power to the speakers will be lower than to a single speaker. The benefit is that no speaker can be over-driven and there is a good amount of headroom for safety.
Yes, most likely. If your speakers are rated for 140w each then it's possible to blow them if your amp drives em at full power. If you do hook them up then find a way to limit the volume or output of your amp. Sophisticated amps and stereos have settings that allow you to do this.
Technically, yes. Practically, no. Amplifiers and speakers are rated by the maximum amount of power (and at what impedance) they can handle. A 1200 watt amplifier will eventually destroy a 1000 watt speaker if it is operated at maximum power. In normal use, however, you rarely even get close to maximum rating.
Check the amplifier used for the subwoofers. Most amplifiers have a 'protect' light that will light up if the subs are wired wrong, if the power wire or ground isn't sufficient, if the amplifier overheats, or if the amplifier is blown. Check your ground wire to see if it has come loose, a simple self tapping screw isn't sufficient to hold the ground lug in place. Also check the wiring for the subwoofers, if spade terminals are used they can come loose, which would blow the mosfets on the amplifier internals.
Blow Your Speakers was created in 1987.
Years ago all we had was tube amplifiers. As long as its a bass amp (so you don't blow out the speakers) there is no problem.
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.
Speakers can blow due to excessive power input, causing the voice coil or other internal components to overheat and fail. Additionally, physical damage caused by rough handling or playing audio at high volumes for extended periods can also lead to a speaker blowing.