4" Enclosed Passive Subwoofer with Speaker Grille

Brand Name
Turnkey Systems
Part #
Built to Order

Low-frequency sound built to last! The SB40-A puts a 4” passive subwoofer in a compact, ported, MDF enclosure with a rugged, protective speaker grille. Connect this via a lead set terminal with an MFJ connector to give the low-end of your sound system reliable strength.

  • 4” subwoofer with speaker grille
  • MDF ported enclosure (8.3 x 5.3 x 6.3”)
  • Lead set with MFJ connector

Download Product Specifications (PDF) »

More Information
Brand Name Turnkey Systems
Speaker System Type Subwoofer
Enclosed Woofer Style Ported
Sub-Woofer Type Un-powered [passive]
RoHS Compliant Yes
Digital Signal Processing No
Audio Signal Input Analog
Audio System - Number of Channels 2.1 (Stereo Sub)
System Frequency Response 80 - 2.5kHz
Sub-Woofer Description 4" (102 mm) Sub-Woofer
Sub-Woofer Impedance 4
Enclosure Style Ported
Sub-Woofer Frequency Range 80 - 2,500 kHz
Size, Enclosure H,W,L (inches & mm) 8.3 x 5.3 x 6.3" (211 x 135 x 160 mm)
Grille Yes
Digital Input S/PDIF No