Hello, great choice in speakers. The 140 is a great one and is starting to catch on in the market. I hear you on the fixed mounting problem you are up against. Personally, I think all monitors should have threaded inserts to mount to aftermarket stands.
There are a couple of options you have; try "blue tack" or any of the tacking strips at your home improvement stores. These are often used for securing picture frames to walls to eliminate vibration and keeping them level. It does a pretty good job of tacking things down without harming your finish. This will keep you safe in an event the speaker is bumped, but it will not keep them from falling off if they take a direct impact hit.
Yes, if you add threaded inserts to your speakers it will hurt your resale value. Of course it also depends how good of job was done doing it too.
There are a couple of options you have; try "blue tack" or any of the tacking strips at your home improvement stores. These are often used for securing picture frames to walls to eliminate vibration and keeping them level. It does a pretty good job of tacking things down without harming your finish. This will keep you safe in an event the speaker is bumped, but it will not keep them from falling off if they take a direct impact hit.
Yes, if you add threaded inserts to your speakers it will hurt your resale value. Of course it also depends how good of job was done doing it too.