Yea, if i push the right earcup against my head when the headset is on i hear a tin foil sounding crackling noise as well, however, it's not the same noise I'm describing.

Yea, about the RJ being so quiet, not so much. Compare it to a 717 or something and you'll see a quiet cockpit. The RJ is loud in barber pole descents and the 700 is loud as hell with the gear down. Keep the thread on topic is all I'm trying to say.