Speakers can be blown if the wrong power amplifier is used and damage can be done by either overpowering or underpowering the amp. For example, if the power rating of the speaker is 300 watts capacity you will need a 300- to 600-watt amp.
The speakers will work with any amp that outputs less power than 700 watts.
I am not a sound man but an electrician. But as I understand it, speakers only receive power. So if you connect 300 watt speakers to a 250 watt amp, you can only get 250 watts out of the speakers. If this understanding is correct, this could not blow your amp. I might say, however, that in most things electrical, they are not intended to be used at maximum output for very long. So if this understanding stays true with sound equipment, then running your 250 watt amp at maximum output in an attempt to get 300 watts out of it, this could shorten the life of your amp even though you never actually overload it.
300 watts or less.
You don't. You install directly to the CD player unless they're more than 300 watts. If they're over 300 watts you need a power with in line fuse to vocal amp, direct ground, RCA's from CD to amp, a remote wire from CD to amp, speaker wire from amp to speakers. make sure to disconnect battery and check fuses prior to installation.
Not unless the speakers are rated at a resistance (ohms) that is incompatible with the amp. Speakers don't generate power, the rating only tells you how much they can handle. So, speakers capable of up to 270 watts, can certainly handle 125 watts. However, if the amp is not 1-ohm stable and the speakers are 1-ohm, you could cause the amp to cut out and overheat depending on the protection mechanism of the amp.
The formula you are looking for is I = W/E. Amps = Watts/Volts.
It generates 25 Amps.
To find an amperage, you divide the wattage by the voltage.
Most factory speakers are any any where from 10 - 25 watts RMS. I wouldn't put factory speakers on an amp unless you want to blow them.
It depends on the power and impedance rating of the 12-inch speakers. If both speakers are rated for 175 watts and the amp can handle the impedance of the speakers, then the 350 watt amp should be able to power both speakers effectively.
Yes, it can.