The JBL's CONTROL 26CTLS ceiling speaker provides excellent sound without creating visual clutter or cable clutter. The 16 ohm impedance of this public address system allows user to use many speakers in parallel without the need for a costly constant voltage distributed system. The coaxially attached voice coil former is made of aluminium for improved cooling and long-term power handling. A 75-inch titanium-coated tweeter provides extended, crisp highs. JBL's Control 26CT delivers great sound while remaining virtually undetectable.