18 Sound 3600W 4 Ohm 21" LF Neodymium Transducer Subwoofer - 21NLW9601-4

18 SoundSKU: 21NLW9601-4

Price:
$ 949
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Description

Overview 

The 18 SOUND 21NLW9601-4 is a refined 21-inch neodymium subwoofer, marking a noteworthy evolution from the 21NLW9600 speaker. This high-performance transducer is crafted for high loading, making it ideal for ultra-low frequency horn-loaded and bandpass subwoofer designs. With a recommended amplifier delivering 3600 Watts of program power without clipping, optimal performance is ensured even in demanding scenarios.

At its core is the Triple Silicon Spider (TSS) technology which grants exceptional control over the moving mass, promising excellent linearity and long-term mechanical stability. This feature ensures improved cone control even at high levels of Sound Pressure Level (SPL) matching, positioning the 21NLW9601 as a low distortion, highly dynamic transducer.

Key Features & Specifications

  • Nominal Diameter: 21" (533 mm)
  • Power Rating: 1800W AES, 3600W Program Power, Peak Power: 10000W
  • Frequency Response: 25-2kHz
  • Sensitivity: 98 dB SPL 1W / 1m average sensitivity
  • Impedance: 4 ohms
  • Voice Coil: 135 mm (5.3 in) split winding four layers ISV copper coil
  • Resonant Frequency: 37 Hz
  • Weight: 30.9 lbs. (14 kg)
  • Carbon Fiber Reinforced Treated Cellulose Cone
  • Triple Silicon Spider (TSS) for improved excursion control and linearity
  • Single Demodulating Ring (SDR) for lower distortion
  • Low noise cooling design for very low power compression
  • Suitable for bandpass and horn loaded subwoofer designs
  • General Specs: Flange and Gasket Thickness: 18 mm (0.71 in), Net Weight: 14.0 kg (30.86 lb), Shipping Weight: 15.5 kg (34.17 lb).

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