Check the listing for details. CT Sounds NEO65-4 6.5" 500 Watt Max Single 4-Ohm Midrange Speaker - Single. Condition: New. Listed at 49.99 USD. CT Sounds engineered the NEO65-4 pro audio speaker to be the loudest midrange speaker we have ever released in company history! This speaker was almost not released due to liability concerns… We are not responsible for hearing loss. The neo pro audio speaker features a N42 Neo Magnet which plays a huge role in the sensitivity (loudness) of the speaker. While most manufacturers cheap out and go with a N35 (most common) we spared no cost utilizing the highest grade neo magnet available, the N42. Furthermore, the loudspeaker utilizes a CCAW voice coil (more expensive than copper voice coil) which allows this speaker to perform exceptionally well at middle to high frequencies compared to the competition. If you like your music LOUD, look no further than the CT Sounds NEO65-4 midrange speaker. We warned you… Technical Specifications:Speaker Size: 6.5" LoudspeakerRMS Power (per speaker): 250W RMSMAX Power (per speaker): 500W MAXVoice Coil Configuration: Single 4 OhmVoice Coil Size: 1.51"Voice Coil Winding Material: CCAWVoice Coil Former Material: KaptonMagnet Weight: 4 OzMagnet Material: NeoSensitivity: 97 dBFrequency Response: 150 Hz - 10,000 Hz