There might be other reasons, but isn’t Magnepan’s 35Hz-40kHz a -6dB range, related to 1kHz (I assume)?
±3dB is frequency response (flatness) while -6dB is frequency range (related to something, usually 1kHz)
Also Magnepans should be pulled many feet from the wall, due to their dipolar nature, to avoid bass cancellation. The difference you're hearing might be the room response.
±3dB is frequency response (flatness) while -6dB is frequency range (related to something, usually 1kHz)
Also Magnepans should be pulled many feet from the wall, due to their dipolar nature, to avoid bass cancellation. The difference you're hearing might be the room response.