Behringer Truth 2031A
Well, there are 2 versions of the same loudspeaker, the original was Grey, and the 2nd version is Black...
very popular self bi-amplified studio monitors...
Version1 came with a Calibration certificate, that shows a near flat frequency responce... matched pair.
in practice... these are room placement / room acustic sensitive like all loudspeakers i've heard...
the waveguide in the tweeter seems like a Genelec 1030a "inspired."
has nice sound in the mids & highs, the lows seem too floppy for my taste...
sounds nice, but not "truth" enought to make a very good mix or master without effort.
on the back has nice features...
if i remember correctly the internal differences between Grey & Black, was the magnet size,
Grey version when voice coils get hot, changed the sound.
SPL had a sweet spot.
the 2031A has a 8 3/4" Woffer & a 1" Tweeter.
Polypropilene Woffer diaphragm, and Owner manual does not say, but it seems like Aluminium Tweeter Diaphragm.
Amplifier Total Power is 140W RMS 0.1% THD, does not say how much for the Tweeter or the woofer-
2KHz crossover frequency. 4th Order.
33Lbs. 15Kg. "i guess each." http://www.behringer.com/assets/B2030A_P0135_M_EN.pdf