2.5-Way Quad 4.5-inch (114mm) Center Channel LoudspeakerDesigned and engineered at our world-famous Acoustic Engineering Center of Excellence in Northridge, California, the Stage 245C is a center channel loudspeaker and is voiced to blend seamlessly with Stage 2 floorstanding mains, bookshelf mains, or even In-wall mains. This loudspeaker features a 2.5-way way design with Next Generation patented High-Definition Imaging (HDI) waveguide geometry, 1-inch (25mm) Anodized Aluminum dome tweeter, and quad 4.5-inch (114mm) Polycellulose ribbed cone woofers that provides deep, signature JBL bass.1-inch (25mm) Anodized Aluminum Tweeter in a Next Generation HDI WaveguideThrough intense research of previous waveguide designs, JBL has developed a new complex geometry that improves directivity, reduced diffraction, and an overall neutral frequency response both on and off axis. The Stage 2 HDI Horn is coupled to an anodized aluminum dome tweeter to enhance efficiency and dynamics.Precision 2.5-Way CrossoverThe 245C center channel model features a unique two and a half-way crossover design. This unique design crosses over the top woofer right below the tweeters output, while the other woofer is crossed over at a lower frequency. This creates a dynamic mid-range but both woofers still extend as deep as they can go for powerful bass. This produces cohesive balanced output with a robust low end that can be both heard and felt.SpecificationsType:Center Channel Loudspeaker SystemLow Frequency Driver:Quad 4.5-inch (114mm) Polycellulose Ribbed ConeHigh Frequency Driver:1-inch (25mm) Anodized AluminumWaveguide:Next Generation HDIRecommended Amplifier Power:20-150WFrequency Response (±6dB):55Hz - 25kHzSensitivity @ 1M, 2.83V:91dBNominal Impedance:6 OhmsCrossover Frequencies:1.3kHz / 2.0kHzEnclosure Tuning:Bass Reflex via Dual Rear-Firing Tuned PortsFinish:Espresso or Latte