18 Sound 21NTLW5000-8 21 in. 8 Ohm Extended 4.5 in. VC 1800W Speaker

The 21NTLW5000 is a 21 inch diameter next generation high performance subwoofer, specifically designed for high SPL very low frequency applications in either a reflex, bandpass or horn loaded configuration. For optimum results we recommend the usage of power amplifiers able to deliver 4000W program power without clipping. The 21NTLW5000 uses Eighteen Sound proprietary Tetracoil technology, where two different, axially separated magnetic gaps and two inside-outside 4.5" diameter aluminum voice coils are wound on the same former and suspended evenly in the two magnetic gaps.

• 8 Ohm Extended 4.5" VC Speaker
• High quality construction and modern designs
• Superior quality performance and reliability

• Size: 21"
• Nominal Impedance: 8 ohm
• Frequency Coverage Type: Sub, Low
• Manufacturer Sensitivity: 97 dB
• Calculated Sensitivity: 95.1 dB
• Nominal Power handling: 1800W
• Max Power Handling: 4000W
• Bandwidth: 30-1800 Hz
• Weight: 50 lbs