what do you mean with 1 " from speaker. you mean 1 inch (2.54 cm) away from speaker ?. it seem so because when i measure 1.5 cm away them i get simular results. but this is ok. at very near distance below 30 cm seem coaxial speakers get crazy sound results because interferences between woofer and tweeter. i get simular results at 1.5 cm measure
I had never thought about this being possible, but I guess it is (if on a much smaller scale than with discrete drivers as distances involved are substantially reduced).
An average of three measurements of the right JBL 104 in its new home, a.k.a. why desks are evil:
Placed directly on the desk, right next to a 24" monitor. The response in individual measurements is all over the place in the mids and highs as combing varies. General midrange trough, typical coax 10 kHz dip. (Derived EQ is attached.)
You can spot the combing in this left channel measurement:
The new owner of these was absolutely
thrilled to receive them either way. They replaced a nigh 20-year-old pair of discount store PC speakers that I guess cost a whopping 29.99€ back in the day and had developed a badly intermittent volume pot that would send loud cracks and pops through the office at random... recently the neighboring desk's Cambridge Soundworks PC Works had already been
borrowed as a replacement for this reason. (Opening the problematic speakers to access the pot would require a very long and thin screwdriver that I don't have. At some point you might as well cut your losses and move on.) I still have to measure that old set when I get around to it.