Don't know how you have subs wired but should be 4 ohm load is what your amp will see.
the watts for 2 ohms is more than 4 ohms. depending on the ohms your speakers take up and the wattage the speakers use, tells you what size amp you need.
Depends on the amp and type of speakers brand and ratings would be nice info u also need to look at ohms of the amp and the speakers
yes you can you will have to wire up the speakers in parallel because with 8ohm it gives too much resistance and the amp will produce unwanted sound i.e. low volume.
If it's running so hot you can't touch it, in most cases it will be due to either the way the speakers are hooked up or the impedence of the speakers. You can incresse the resistance to the amp to have it run cooler by connecting speakers in series or getting speakers with a higher ohm rating. The lower the resistance (2 ohm, 4 ohm, 8 ohm) the more current flows though the amp making it hotter. Remember if you hook multiple speakers in parallel it will cut the resistance in half. So if you connect speakers that are 4 ohm to the same channel you are running at 2 ohm. Check your amp's ratings.
They would sound fine. Its the speaker that's 2 Ohms not amp. Marine speakers work great on motorcycles. Hold up better
It depends on the application. If you have an amp that is stable in 8 ohms per channel, then 8 ohm speakers will work best. However, if you wanted multiple speakers on that channel you could use two 16 ohm speakers.
The speaker will be fine and there will be little impact on its performance. In these situations, if there is a problem, it will be with the amp because that is what delivers the electrical current to the speaker. The situation you want to avoid is having speakers with a lower impedance connected to your amplifier. So you might have had a problem if your surround speakers were 4 ohms. However, as they have a higher impedance than the amp is set for, I wouldn't worry about it.
No, speakers do not have a fuse. But if hooked up to an amp, there should be a fuse somewhere on the power wire connecting to your battery. If no amp, check radio fuse. If no sound but the stereo comes on it might be that your speaker wires are'nt hooked up correctly.
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.
Two four ohm speakers in parallel is two ohms. Make sure the amp is rated for that load impedance, or you could damage it.
Sure, If you mean your stereo has 4 ohm output and using 16 ohm speakers. The volume will be reduced somewhat by doing this, but it won't harm the stereo. If you have 4 ohm speakers and stereo is designed for 16 ohms you can do it ,but the amp will run hot and you may suffer damage at high volume to the amp.
i would check you have a good ground the amp will still power up but no power will be put through the system if the ground is not good