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Custom Single Sub Speaker Downfire Box for all Avalanches

Starting at: $129.00

Please Choose:

Orders to Canada Will be Extra Shipping.Will Advice You of the Amount Before We Ship.

Custom Single Sub Speaker Downfire Box for all Avalanches.

If you want the most boom out of your downfire setup, then our regular depth downfire boxes are the ticket. With mounting depths up to 5.25", you can select a more powerful and beefier sub to go in them.  The result is more bass and better sound quality than with other setups. 

Our single downfire box fits on the driver's side under the rear seat.  Our box is a half box with .50 cu.ft. of air.    

Like all of our downfire boxes, this box is made to mould around all the seat bracing on the floor and the hump in the middle of the truck.  The seats have no trouble closing at all.  If you are looking for a simple inexpensive way to put bass in your truck, this is it.  

Also available in a full width Dual Sub Speaker Box.


  • Does not include speakers - box ONLY
  • Approximately 17 lbs when empty
  • MDF construction
  • No modifications required for installation
  • Fits one 8-inch or 10-inch round sub
  • 5.25-inches of mounting depth
  • 0.5 cu/ft of volume
  • Sealed box
  • Terminals installed
  • Available in 4 exterior carpet colors: Charcoal Gray, Black, Light Gray, and Tan (Please use the drop-down menu below to select desired color before adding to shopping cart.)
  • Also compatible with all Escalade EXT's

More pictures of various shots of both the single and dual speaker boxes below:

  • Model: AVDF-110

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This product was added to our catalog on Tuesday 24 February, 2009.



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