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King Boxes 12" Dual Ported Downfire Carpet Box for '07-Up Tahoe/Yukon GM50-12

CASE QUANTITY: N/A

PACKAGE WEIGHT: 40.1 LB

SKU KG-GM50-12
Save 20% Save 20%
Original price $249.99
Original price $249.99 - Original price $249.99
Original price $249.99
Current price $199.99
$199.99 - $199.99
Current price $199.99

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  • Tailored for '07-'13 Tahoe/Suburban, Yukon/Denali models
  • Ported downfire design for deep, dynamic bass
  • Optimal tuning at 37 Hz for rich, precise low frequencies
  • Space-efficient with .5 cubic feet per sub, maintaining third-row functionality
  • Deep mounting depth of 11.5" to accommodate various subwoofer sizes


King Boxes 12" Dual Ported Downfire Carpet Box for '07-Up Tahoe/Yukon GM50-12


This Listing Includes:



  • (1) King Boxes GM50-12 Speaker Box


Elevate the audio experience in your '07-'13 Chevy Tahoe/Suburban or GMC Yukon/Denali with the GM50-12 from King Boxes. This box is designed to fit snugly while accommodating the third-row seating. The ported downfire configuration, precisely tuned to 37 Hz, maximizes bass clarity and depth within the .5 cubic feet per sub capacity, supported by an ample 11.5†mounting depth for your subs. The result is a powerful, resonant bass that doesn't sacrifice vehicle space or comfort.


GM50-12 Specifications:



  • Model: GM50-12

  • Vehicle Compatibility: 2007-2013 Chevy Tahoe/Suburban, GMC Yukon/Denali

  • Enclosure Type: Ported Downfire

  • Tuning Frequency: 37 Hz

  • Volume: .5 cubic feet per sub

  • Mounting Depth: 11.5â€

  • Finish: Carpet

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At Big Jeff Audio, we strive to make your shopping experience as smooth as possible by offering a wide variety of payment options. Below is a complete list of the payment methods we accept:

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We also offer financing options to make purchasing easier. Learn more about our financing options here.

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If you have any questions or need assistance with payments, feel free to reach out to us at info@bigjeffaudio.com or call us at 737-BIG-JEFF.

Shipping Options and Delivery Time

Do You Offer Expedited Shipping?

Yes! At checkout, you can select from different shipping options:

  • Standard Shipping: Free for orders over $100.
  • Expedited Shipping: Available at an additional cost, calculated based on the weight and destination of your order.

How Long Does Delivery Take?

  • Handling Time: Most orders are processed and shipped within 1 business day after receiving cleared payment. Occasionally, additional handling time may be required, but we’ll notify you if that’s the case.
  • Standard Shipping: Typically takes 3-5 business days, though delivery may be affected by extreme weather or holidays.

What Happens If My Package Is Undeliverable?

If your package is refused or marked undeliverable and returned to us by the carrier, you’ll need to pay the full shipping cost to have the package resent. Alternatively, we can refund your order, minus the cost of shipping.

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