More powerful amp for top or bottom?


I am getting a Pair of Tyler Acoustics D1's which I will bi-amp with two Class D's. One gives out 125 w/chan (into 8 ohms) the other 570. Which should I use to drive the bottom? How come?
bob0398

Showing 3 responses by elevick

Bass definitely requires more power. However, it is almost impossible for both of these amps to increase in volume in a neartly exact fashion. Even if you find a good match at 10 watts, was volume increases one amp may increase at a different rate.
Al,
Educate me, please. I thought that many amps increase in output as a logarithmic function, not linear. As input power from the pre is "amplified" that each step in volume is not linear but a function of the amps total output power? ie turning a pre-amp up 1/2 way will not necessarily utilize 1/2 of the amplifier's output capability.
Even if we look at this as a linear function, 1/2 volume on the pre amp would be 1/2 of the amps output capability. Therefor, 1/2 volume for a 100 watt amp will be 50 watts and 1/2 volume on a 240 watt amp is 120 watts. That's about a 4-5 db imbalance?
Thanks (no I'm not an engineer and yes, that's part of my problem...)
Al,
That's a great answer!
Hope Santa gets you that 180gm LP you wanted...
Emery