I agree with Sean at least in regards to lower cost equipment. I know one company that sells a 50 watt and a 100 watt integrated amp at 8 ohms. The 50 watt amp is rated at 105 watts at 4 ohms and the 100 watt amp at 135 watts at 4 ohms. The 50 watt amp is pretty typical; the 100 watt amp has a lot more features. Obviously, these two amps are really closer as far as power output than advertised, but they want you to think you are getting a lot more than features when you pay 50% more for the 100 watt model.
power/impedence reciprocity
What would you rather have for a medium sized room: an amp that does 125/250/500 watts into 8/4/2 ohms, or an amp that does 250/325/500 watts into 8/4/2 ohms?
It has been explained to me that the 125/250/500 will give more slam, low end detail and control than the 250/325/500. This is because all speakers will go below 1 ohm for short durations during drum beats and other low frequency percussive sounds, and the 250/325/500 falls off more quickly with the load that by the time you get below 1 ohm (or even below 2 ohm) it can't handle the low end nearly as well.
I have always suspected this to be the case, but would like to check my suspicions with some techies. Thanks for the advice.
It has been explained to me that the 125/250/500 will give more slam, low end detail and control than the 250/325/500. This is because all speakers will go below 1 ohm for short durations during drum beats and other low frequency percussive sounds, and the 250/325/500 falls off more quickly with the load that by the time you get below 1 ohm (or even below 2 ohm) it can't handle the low end nearly as well.
I have always suspected this to be the case, but would like to check my suspicions with some techies. Thanks for the advice.