A WGS driver rated for 90W, like the ET90, could really handle a 90W amp or thereabouts. So rest assured you have quite some margin with that amp of yours.
However that's just the power handling. Like you said: the X-max is really anyone's guess. Then the critical aspect of X-max is really the low-end and not so much the over-all power.
A WGS driver rated for 90W, like the ET90, could really handle a 90W amp or thereabouts. So rest assured you have quite some margin with that amp of yours.
However that's just the power handling. Like you said: the X-max is really anyone's guess. Then the critical aspect of X-max is really the low-end and not so much the over-all power.