<> Dual Sub Box (under rear seat) 2001-2006 Silverado CREW HD - Sound Off Audio, Inc.
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Xtreme Enclosures

Dual Sub Box (under rear seat) 2001-2006 Silverado CREW HD

RRP: $199.95
$139.95 (You save $60.00)
If you have subwoofer(s), type your sub model # here:

(Maximum Size: . Type: )

 Product Description

This box is designed to fit 2001-2006 Chevy Silverado Crew Cab HD Series and 2001-2006 GMC Sierra HD Series Crew Cab Trucks.


This will not fit the Silverado Ext Cab. ONLY FITS THE 2500 AND 3500 SERIES CREW CABS.

Will not fit 1500 SERIES ( 1/2 ton )crew cab. We have a behind the seat version that will fit the 1500 SERIES (1/2 ton) crew cab and the Heavy Duty Series crew.THIS WILL ALSO FIT 2007 CLASSIC BODY GMC/ CHEVROLET SILVERADO ONLY. WE HAVE ANOTHER BOX THAT FITS THE NEW BODY STYLE 2007 TRUCK.

  • Fits two 8 inch or two 10 inch subwoofers or Fits one 12 inch subwoofer
  • Subs fire down underneath back seat
  • MDF wood
  • Carpeted in Charcoal Grey Carpet
  • Air space = .65 cu ft per sub
  • Mounting Depth = 6 1/4 inches
  • You must remove bar under the rear seat on passenger side.  Instructions are in video and you may contact us for instructions too.

Subwoofer magnet must be less than 6 inches.

DOES NOT WORK WITH BUCKET SEATS, MUST HAVE FULL REAR BENCH OR 60/40 SPLIT SEATS.

THIS BOX WILL NOT FIT IF YOU DON'T HAVE A BRACE ON THE PASSENGER SIDE UNDER REAR SEAT.

Hole cutouts:

  • Standard hole cutout diameter for 8s = 7 inches
  • Standard hole cutout diameter for 10s = 9 1/8
  • Standard hole cutout diameter for 12s = 11 1/8
  • If you don't know the actual hole cutout diameter, choose the standard cutout below.
  • If we don't have your actual diameter listed below, choose the standard cutout, then provide us with your sub model #.  No worries, we can look up the specs of your subs.

Popular subwoofers that customers have used for this sub box are: 

  • Sundown SA series, SE series, SD series and SD3 series
  • Alpine SWRT, SWR8, SWR10 and SWR12
  • Kicker CompRT series, Kicker Comp series, Kicker Comp S, Comp D, CompR, CVR, L7 solobaric 8s and 10s
  • JL Audio TW3 series, W1, and W0
  • Rockford Punch series 8s and 10s

 Product Videos

01-06 CHEVY CREW CAB HD UNDER SEAT BOX 60/40 OR BENCH
  • 01-06 CHEVY CREW CAB HD UNDER SEAT BOX 60/40 OR BENCH

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 Product Reviews

Write review

  1. Sound Off Audio.com response to review regarding latch

    Posted by Unknown on 30th Aug 2015

    I have built thousands of these. The seat always latches.
    Make sure you pull the box forward towards the brackets in front until it closes.
    Also, I am assuming you removed the brace from the passenger side?
    It's a tight fit but if you get it positioned correctly it'll go down.


  2. Passenger seat does not latch

    Posted by Unknown on 25th Aug 2015

    Box is okay, but the passenger seat does not latch as promised. I rewatched the product video on youtube and you can tell the passenger seat in the video doesn't latch either because he doesn't pull the handle to lift it.


  3. Very nice enclosure

    Posted by David on 22nd Apr 2015

    I needed a box for a single 12" sub for my 02 2500HD crew cab. This is the only box i could find that had the mounting depth and air space I required. The box is built well and fits perfectly. customer service was very fast and helpful, If i ever need another box I'll purchase fro soundoff in a heartbeat. Very satisfied.


  4. I would recommend this box to anyone.

    Posted by Marshall on 26th Sep 2014

    I just put the box in my truck and it fits the odd space well. I am a little concerned about how close the surround is to the one bar on the passenger side, but Matt says it will work. I'm willing to take his word for it for now.

    I am using 2 Kicker CVR10s I don't have the amp installed currently. I will comment back when the whole system is up and running. I wonder if a ported box of this size with one 10" would not be better. We'll see.


  5. awesome box

    Posted by Unknown on 1st Jun 2014

    This is the best box on the market hands down,i looked for a long time looking for a box that would fit my truck and sub. i was more then happy with the quality of this box and how well it was made.

    I put 2 sundown audio sd-10's and not only do they fit perfect but the sound is great i will defiantly be buying my next sub box from Sound off


  6. Great Guys And Great Product

    Posted by William Parrish on 21st Nov 2013

    I just got my box from sound off audio and I must say its a great product. I normally take the time to build my own boxes but this one seemed a little more than I wanted to tackle and I didn't have the time. So coming from a guy who knows good craftsmanship when he sees it this product is top notch


SKU:
CHEVY GM CREW HD 01-06 DUAL UTS
Availability:
We build each sub box and ship within 3-10 business days excluding weekends.
Shipping:
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