Thanks to its patented High Back-emf design, you get thunderously loud music with the Sunfire CRM-2 loudspeaker. The 4.5-inch side-firing woofers of this Sunfire Cinema Ribbon Duo loudspeaker ensure tight and dynamic bass. Integrated with the patented Sonic Hologram Imaging, this Sunfire loudspeaker corrects the flaws in CDs and DVDs for smooth and trouble-free sound output. The 6-inch ribbon tweeter of the Sunfire CRM-2 loudspeaker offers clean and crisp highs. With 95 Hz - 40 kHz frequency response, this Sunfire Cinema Ribbon Duo loudspeaker produces excellent sound across all levels. The 8 ohm nominal impedance of this Sunfire loudspeaker delivers clear and dynamic sound. With 90 dB SPL sensitivity, the Sunfire CRM-2 loudspeaker generates incredible audio.