Super tweeter for outstanding detail and clarity in high frequencies without harshness, The ST304 may be used individually in lower power systems or arrayed for increased coverage and SPL in higher power systems, The bullet-shape horn design offers a longer throw 400 x 400 dispersion, The plastic injected housing is stable and durable, The phenolic annular diaphragm is long-lasting cost- effective and more natural-sounding than metallic diaphragms, The use of high-temperature materials and adhesives improves power handling and produces exceptionally high acoustic output, A precisely engineered diaphragm structure and alignment mechanism for easy reliable cost effective repair in case of diaphragm failure, ST304-SLF: Product without Selenium logo on the plate, * Nominal impedance, 8 OHMS * Minimum impedance@6, 000Hz 7, OHMS * Power handling * Musical Program (w/ xover 5 000 Hz 12 dB/oct) 40 W * Musical Program (w/ xover 8 000 Hz 12 dB/oct) 80 W * Sensitivity (2, 83V@1m) averaged from 5 to 15 kHz 106 dB SPL * Frequency response @ -6 dB, 3 500 to 18 000 Hz * Sound dispersion (HxV) 40x40 degrees SKU: TBAL3510