JBL Professional","Control 321C is a premium medium-power 300 mm (12 in) coax speaker , 250 watts, 34 Hz - 18 kHz.","Control 321C has been engineered from the ground up to deliver exceptional next-generation performance in a coaxial point source design ceiling loudspeaker. The low frequency cone performs as a true 12 inch (300 mm) diameter waveguide for the high frequencies. A unique metal throat transitions seemlessly to the horn to eliminate high frequency beaming which is common among this category of speaker. The result is a coaxial speaker with extremely consistent 90° coverage on a broadband basis.

特性

• Consistent 90° broadband pattern control
• 300毫米（12英寸）低音扬声器，带kevlar加固圆锥体和50毫米（2英寸）音圈
• 25mm(1出口)压缩驱动器
• 语音和人声具有超凡的清晰度，可扩展音乐频率响应
• 250瓦功率处理，高灵敏度，提供高spl能力
• 先进的高坡度交叉网络，提供持续覆盖和平滑、自然的中档
• 清洁，现代格栅和可选的backbox可用
• 250瓦功率处理，高灵敏度，提供高SPL能力
• 先进的高坡交叉网络，覆盖均匀，中程自然