paranoid listener-damaging speakers?

Specs for speakers are usually given at 1 meter from the speaker. As to your ears - the listening position.

As someone else mentioned - get an spl meter. As to hearing loss due to acoustic trauma - again, get an spl meter and take a look at reputable medical/audiology sites as to the level and duration of exposure that is unhealthy in this regard. What is subjectively loud depends on a lot of things, distortion will sound loud and distortion comes into play as to what will damage your speakers. Conversly, distortion does not come into play with what will damage your hearing. Actually , the highly distorted sound will likely cause you to turn the volume down prior to any damage to your hearing. It isn't the perceived loudness that damages your hearing, it is the force of the sound wave hitting the anatomical structures.

80 dB peaks is a very conservative listening level, particularly if you are listening to music with a wide dynamic range. Even for highly compressed music, 80 dB is conservative. The room is not large, the measurement was taken at a meaningful distance and if your amp was so underpowered as to have drastic clipping you would hear the distortion. Based on the above, it is highly unlikely that you are going to damage the drivers at that level.