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• 25 – 1800 watts suggested amplifier power range

  25 – 1800 watts suggested amplifier power range

  JBL engineers designed the MS-12SD4 premium subwoofer to produce thundering, forceful bass from an amplifier capable of delivering up to 1800 watts of power. The MS-A5001 digital signal-processing amplifier, part of the JBL MS Series, is an ideal power partner for the MS-12SD4.

• Rigid polypropylene cone

  Rigid polypropylene cone

  The MS-12SD4 subwoofer features a rigid polypropylene cone that is lightweight but stiff enough to move air effectively without flexing. The result is a low-frequency diaphragm that reduces unwanted mechanical distortion under movements up to its linear-excursion (Xmax) limits.

• Stitched tri-laminate surround

  Stitched tri-laminate surround

  The stitched tri-laminate surround on the MS-12SD4 subwoofer features dual stitch lines for a robust connection to the cone. The material is uniquely able to control the cone’s movement and dampen any vibrations that originate in the frame and mounting surface from reaching the cone. The result is precise control and excellent bass at low or high volumes.

• Cast-aluminium frame

  Cast-aluminium frame

  The cast-aluminium frame on the MS-12SD4 subwoofer ensures a rigid chassis for the sub’s moving parts. Since cast aluminium is nonmagnetic, the sub’s magnetism is focused on the voice coils to control the cone’s rapid, piston-like movement and reproduce even the most complex bass sounds faithfully. Cast aluminium also dissipates heat efficiently and hence provides reliable power handling.

• Vented magnet assembly

  Vented magnet assembly

  All MS-12SD4 subwoofers include a vented magnet assembly to let the voice coils breathe. This feature reduces the probability of power compression in systems playing loudly over a long period. It means an efficient use of amplifier power so that all the power delivered to the subwoofer is directed to the voice coil and not wasted as residual heat.

• Flexible, dual voice-coil design

  Flexible, dual voice-coil design

  Dual voice coils on MS-12SD4 subwoofers offer the best range of wiring and system-configuration options to optimize the amplifier’s output load. When you’re using multiple subwoofers, the dual voice-coil configurations allow dual, triple and even quad subwoofer designs to optimize the amplifier load for maximum power output.

• Small sealed and vented enclosure volumes

  Small sealed and vented enclosure volumes

  MS Series subwoofers provide amazing bass from modest enclosure volumes. For this 12-inch (300-millimetre) sub, we recommend a respectable 0.95 cubic feet (about 27,100 cubic centimetres) sealed enclosure or 1.7 cubic feet (about 48,100 cubic centimetres) vented enclosure. Since vented enclosures provide greater output than sealed enclosures given the same power, the vented-enclosure option will work with smaller amplifiers.

• Spring-loaded connection terminals

  Spring-loaded connection terminals

  The MS-12SD4 subwoofer features spring-loaded connection terminals for both voice coils, ensuring ease of connection for a variety of wire-gauge sizes. The subwoofer’s push terminal also makes easy work of connecting series or parallel voice coils, or wiring to other subwoofers.

• Match with other JBL MS Series products

  Match with other JBL MS Series products

  The JBL MS-A5001 digital signal processing mono amplifier is an ideal companion to one or more MS-12SD4 subwoofers. Add an MS-8 digital integration processor to the sound system, and listen to the speakers come alive, blend seamlessly with the sub and provide an in-vehicle sound experience that’ll rival great home audio experiences. JBL engineering has once again delivered excellence in an MS Series product.

What’s in the box:

• View contents

  What’s in the box

  • • 1 MS-12SD4 subwoofer
  • • Owner’s manual
  

Download:

• Manuals & More

  Manuals & More

  Owner's Manual English: 1385.81KB PDF