This is a thread to display data and pictures of the XBL^2 tweeter from Stereo Integrity. The tweeter is named the M25. It is a 4 Ohm tweeter with a 25mm silk dome equipped with an XBL^2 motor, aluminum cup housing (edge of the flange near the dome is also the diffuser), integrated metal hexagon mesh grille, and pre-wired pigtail out the back for easy wiring.This is a broad-band tweeter with frequency range including 900 Hz to 30,000 Hz. Fs is 820 Hz and Re is 3.6 Ohms (4 Ohm nominal). Averaged sensitivity is 89 dB from 800 Hz to 30,000 Hz 1W/1M. Up to 75 watts RMS power handling.There will be a pre-order with a very slight discount. Keep tuned to this thread for more information regarding the pre-order as ordering/pre-ordering gets closer. Regular pricing will be $50 per tweeter shipped inside the continental USA, or $100 per pair.This tweeter design has been in my files for a while but has recently been brought to my attention that it would be appreciated if I came out with it so here are pictures and response plots of the tweeter.Pre-ordering is now open.Front:Rear:Side:On and off-axis response plot:Dimensional Drawing: