Let us know what you find out. In my room, at -20dB on the Denon (about a half watt into my 80s), I get 96dB without the sub. Way too hot I know but I haven't figured out what to do about it.

BTW, are you going to carry that meter around with you now? It's fun measuring different sound sources \:\) .

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated