Check the listing for details. JBL / Selenium - ST200 Phenolic (1.75") 8 ohm Super Tweeter.. Condition: New. Listed at 31.99 USD. A JBL / Selenium / by Harman ST200 BLK Super Tweeter @ 8 Ohm Super tweeter for outstanding detail and clarity in high-frequencies without harshness. The ST200 BLK may be used individually in lower power systems or arrayed for increased coverage and SPL in higher power systems. Specifications :Impedance - 8 ohms.Power Rating :RMS - 70 W Musical Program - 140 WSPL 1W @ 1m (dB) - 105Frequency Resp. @ -10dB (Hz) - 2.000 Hz to 20.000 HzVoice Coil Diameter - 1.8" (46mm)Horn Flare - H 4.5" x V 5"(114.3mm x 127mm)Depth (front to back) - 2.25" (57.15mm)Sound Dispersion H x V - 40° x 40°Magnet weight - 8lbs (220gms)Magnet Diameter - 3.5"(88.9mm)Diaphragm – Phenolic Annular. Housing material - Plastic.FREE SHIPPING ONLY In the Lower 48 StatesMost Orders Placed Before 3PM and Paid thru' PayPal Are Shipped The Same Day; Monday to Friday