Supplied and fitted at our workshop in newton abbot, Devon
 
Product Description
Match APBMW X4E front coaxials with two APBMW S8-4 underseat woofers to add body and punch without changing the OEM look. Bass lines gain presence and the overall balance feels fuller.
Note: Underseat woofers perform on factory power, but deliver their best depth when driven by an external amplifier.
 
What’s included
Front: APBMW X4E coaxials
Subs: 2 × APBMW S8-4 underseat woofers
Plug-and-play BMW harnesses
Entry-level sound deadening (3-layer upgrade available)
5-year warranty, professional installation
 
Specs – APBMW S8-4 (each)
200mm (8") shallow BMW woofer, 4Ω
Designed for OEM underseat enclosures
Quick, musical mid-bass