Agreed. Running 4 Ohm speakers in bridged mode is like running 2 Ohm speakers in non-bridged mode. Many amps don't respond well to 2 Ohm loads.
The point was that when running bridged the power output is more than double the 8 Ohm wpc rating. When bridged, the amp sees 1/2 of the speaker load on each of the bridged channels. So the bridged power output when running an 8 ohm speaker is the sum of the two bridged channel's 4 ohm wpc output.
The point was that when running bridged the power output is more than double the 8 Ohm wpc rating. When bridged, the amp sees 1/2 of the speaker load on each of the bridged channels. So the bridged power output when running an 8 ohm speaker is the sum of the two bridged channel's 4 ohm wpc output.