Remember....

I keep seeing folks in forums who run the subwoofers hot and play over volumes around -10db and windows/wall/photo shaking. We dont play louder than -25db at best.
Those numbers are arbitrary, and don't really mean anything unless you have an SPL to correlate them to.

I tried to check the db level with an iphone app and it shows the average as 75db at the loudest and the peak as 88 db or something
The iphone app has been shown to be inaccurate.

Depending on how the place in constructed, bass levels of 88db could be pretty bothersome.

Hopefully your neighbor will let you experience what he is hearing.