5 Stars
Very nice indeed I got two plus a amp and a processor very efficient service highly recommend
This 21-inch Neodymium Subwoofer is encased in my 18mm Birch Marine Plywood cabinet. This passive neodymium subwoofer delivers over 139 dB SPL. My driver in the box is 1500w RMS and 4-ohm impedance.
Use these to deliver the Sub Bass frequencies that an 18" cannot deliver. Use these at low volume under the 18" subwoofer to truly experience low frequencies.
Key Features:
To get even lower sub low bass plug the ports and seal the cabinet.
Marine Birch Plywood 21" cabinet finished in Heavy Duty black splatter paint it will withstand all the knocks and scrapes gathered through touring.
Fitted with my purpose made BWN21 12kg driver with its 5-inch voice coil which goes down to 27Hz.
The neodymium 21" driver is very efficient and takes modest amplification to drive it. Study our BP4k amplifier.
If you are presently using an 18" speaker you will notice a huge difference by adding this single or double 21"
Speakon in and Speakon out enables you to link two subs together giving a 2-ohm load.
Other Features
Important information about subwoofers
Subwoofers are designed to reproduce low bass audio signals between <30Hz and <150Hz. Driving them with full frequencies will cause permanent damage, so they should only be operated with a passive low-pass filter, a crossover network, or an active electronic crossover or speaker management system.
Dimensions
Caractéristiques
Very nice indeed I got two plus a amp and a processor very efficient service highly recommend