Speaker driver

The B&C Speakers 21DS115 4 Ohm Push Buttons is a 21-inch high-output loudspeaker designed for professional subwoofers, combining extreme power with precision and reliability in the deepest low frequencies.

ARTICLE N° 113676
The B&C Speakers 21DS115 4 Ohm Push Buttons is a very high-level subwoofer designed to deliver exceptional acoustic performance in professional PA systems. With 1700W of AES power and 99dB efficiency, it combines efficiency, robustness and perfect bass control.

This model features a 4.5-inch (115 mm) aluminium voice coil mounted on a fibreglass support, guaranteeing excellent thermal stability and faithful reproduction of the signal, even at high volumes. Its neodymium magnet structure optimises flux density (up to 28.8 T-m) while reducing overall weight, while the integrated demodulation ring limits harmonic distortion and improves the linearity of cone movement.

With a linear excursion of ±15 mm, the 21DS115 maintains high accuracy even at high sound pressure levels. Its bandwidth extends from 30 Hz to 1 kHz, offering powerful, well-defined reproduction of low frequencies. The triple-roller suspension, rigid waterproof cone and double silicone spider ensure remarkable durability, even in the most extreme conditions.

Designed for a 130-litre bass-reflex load tuned to 40 Hz, the 21DS115 excels in high-output subwoofer configurations for both touring and fixed installation. It combines control, rapid response and massive sonic impact with proven reliability.
  • B&C Speakers 21DS115 4 Ohm Push Buttons
  • 21" (53 cm) speaker
  • Power 1700 W AES / 3400 W programme
  • Sensitivity 99 dB 1W/1m
  • Frequency response: 30 Hz - 1 kHz
  • 4.5" (115 mm) Aluminium voice coil
  • Magnet : Neodymium
  • Connections: Push Buttons
  • Recommended load: 130 litres, tuned to 40 Hz
  • Fs : 30 Hz
  • Qts : 0,21
  • Xmax : ±15 mm
  • Suspension : Triple roller
  • Radial cone with front/rear waterproof treatment
  • Demodulation ring : Yes
  • Double silicone spider
  • Bowl material: Aluminium
  • Repair kit RCK21DS1154 sold separately
  • Supplier reference: ALT21DS1154
  • Dimensions: Ø547 x 242 mm
  • Weight : 14,8 kg
B&C Speakers - 21DS115 4 Ohm Push Buttons
B&C Speakers - 21DS115 4 Ohm Push Buttons
488,33 € excl VAT
Out of stock
Contact us for delivery times
Guarantee 3  years
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