Scan-Speak Discovery D2604/833000 26mm Dome Tweeter 4ohm, Double Ferrite Magnet, Chamber, Wide Surround The Discovery series offer traditional design, superior sound, a solid construction, and a wide range of variants. Combining these elements – plus a wealth of technical features and finesses – it gives our customers the possibility of acquiring a tailor-made Scan-Speak solution with very good performance at a reasonable low price point! - High sensitivity - 93dB - Extended Frequency to Above 40KHz - Low Resonance Frequency - 475Hz - Low Distortion - Wide Dispersion - Textile Diaphragm, wide Surround