They can be as loud, as the amp is not delivering 600 watts. The 10" sub rated at 600 watts is able to withstand more power.
100 watts is great, 150 watts may be too loud for some, and there is higher watt amplifiers made.
300 watts
2,23,709.96 watts
As asked, the question cannot be answered. At 1 volt, 300 Watts = 300 Amps. At 10 volts, 300 Watts = 30 Amps. At 100 volts, 300 Watts = 3 Amps. At 120 volts, 300 Watts = 2.5 Amps. At 240 volts, 300 Watts = 1.25 Amps. To calculate the relationship between Amps, Volts and Watts, use the formula: Watts = Amps * volts
1000 watts is not twice as loud as 500 watts, that is the first myth to break. But 1000 watts will sound superior because of something called headroom. The best way to think of it is in relation to room size. 1000 watts will not rock Glastonbury but it will do serious damage in a pub or medium to large hall.
Halogens are about 30% more efficient so 300 watts incandescent is equivalent to about 210 watts halogen. It's also equivalent in brightness to about 60 watts CFL.
300 watts or less.
How loud or how many watts it has.
The ratings for the speakers will depend upon what '300 watts' means. If the amplifier develops 300 watts RMS total across 4 channels, this would indicate 75 watts RMS per channel. Speakers rated at 100 watts should suffice for this amplifier.
your mums head
300 -350