Mesa/Boogie Road King Slant Speaker Cabinet (300 Watts, 4x12")

Get the best of both worlds! The Mesa/Boogie Road King Slant 4x12 offers both a closed-back side as well as an open-back side with its innovative back panel.

The Road King 4x12 Slant gets it's design foundation largely from the Rectifier 4x12 Slant, adding a dado-joined vertical panel in the center of the cab to isolate the closed-back side of the cab from the open-back side. Finished with a custom-tuned, one-piece rear panel spanning both sides, Celestion Vintage 30s are loaded in the closed side and Mesa/Boogie exclusive Celestion Custom 90s in the open side, offering amazing tonal variety and application flexibility. A side-by-side comparison with a 4x12 Rectifier Slant Cab showcases the Road King cab as being slightly tighter and more focused in the lows with a little more prominent midrange and sparkle in the high-end from the open-back influence. Combined with the cabinet-switching option built into the Road King Head or Combo, OR using an external cabinet switcher with your favorite amp, dynamic live performance, composition and mic'ing options are endless.

SLANT-style Road King 4x12 Cabinets offer a 'monitor' effect due to the top speakers sloping up toward your ears. This can be a benefit when playing live. Other players prefer the STRAIGHT-style cabinets with all speakers attached to a one-piece baffle and all facing the same direction, effectively 'coupled' for maximum punch and frontal projection. Regardless of Slant or Straight, if you are playing a Road King 4x12, your tone has authority, clarity and detail that only MESA Road King 4x12 Cabinets deliver.

You simply won't find a better cabinet. ALL MESA ENCLOSURES read more are made using the finest Void-free, Marine Grade Baltic Birch. Super strong rabbet corners are glued and nailed. Speaker baffles are fitted with superior dado joint construction and braced. Grilles are wrapped around a separate grille board, not the baffle board. Grille material is made of strong twisted jute dipped in a special coating that filters top end for a sweeter response.
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- Build Location: Petaluma, CA USA with the World's Finest Materials
- Cabinet Material: Marine Grade, Baltic Birch
- Standard Finish Options: Black Taurus or Black Bronco Vinyl, Black Jute Grille, Black Handle & Corners
- Style/Type: Hybrid, Left Side = Open Back, Right Side = Closed Back (sealed)
- Speaker(s) & Mounting Position:
- Left Side = Celestion C90s -Rear Mounted
- Right Side = Celestion V30s - Rear Mounted
- Wattage: 300 Watts (Left Side = 180W / Right Side = 120W)
- Mono or Mono + Stereo Input: Mono + Stereo
- Cabinet Impedance: 4 Ohm Mono / 8 Ohm Stereo
- Casters Included: Track-Loc Removable Casters
- Additional Features: Paralleled Mono Output
- Slip Cover: Included - Fitted Slip Cover
Dimensions and Weight in Packaging
Base Item
Shipping Weight: 125 lbs
Shipping Dimensions: 42 x 33 x 18 in
Manufacturer Part Number (MPN): 0.412RK.SL.BB.FC

For support or warranty questions, please contact the manufacturer:
Phone: 707-789-3348


  • 18 x
  • 12 x
    $129.08 with zZounds
  • 8 x
    $193.63 with zZounds
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