SKU: 67857869881

LAB SlapBox™ 1.40 ft^3 Ported MDF Enclosure Box for Pair of Alpine 8" R-Series Subwoofers

Sale price$112.50 Regular price$125.00
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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18

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Description

LAB SlapBox™ 1.40 ft^3 Ported MDF Enclosure Box for Pair of Alpine 8" R-Series SubwoofersWith the LAB SlapBox, our goal was to create a well rounded cabinet that would sound good while listening to different genres of music. The SlapBox is a driver specific ported enclosure designed and optimized using a specific woofers T S parameters. Construction of these boxes consist of solid 3 4 CNC cut high grade MDF (medium density fiberboard), precisely cut and assembled, then sealed using industrial grade sub floor adhesive. Tuning frequencies


With the LAB SlapBox™, our goal was to create a well-rounded cabinet that would sound good while listening to different genres of music. The SlapBox™ is a driver-specific ported enclosure designed and optimized using a specific woofer’s T/S parameters. Construction of these boxes consist of solid 3/4” CNC-cut high-grade MDF (medium density fiberboard), precisely cut and assembled, then sealed using industrial grade sub-floor adhesive. Tuning frequencies vary among applications, but we generally tune our SlapBox™ between 32Hz-34Hz. Tuning in this frequency range provides a well balanced attack of SPL and SQ. You’ll get incredible output and sound quality, without sacrificing low-end extension. The SlapBox™ is available for a variety of sub applications. The name says it all. This enclosure really “Slaps”!
  • Alpine® R-Series dual 8-inch vented woofer enclosure
  • Designed and optimized for a pair of 8" Alpine® R-Series subs (R2-W8D2 / R2-W8D4 / R-W8D2 / R-W8D4 / SWR-8D2 / SWR-8D4)
  • 1.40 cu. ft. tuned @ 34Hz
  • Constructed of 0.75" CNC-cut high-grade MDF
  • Common chamber with shared port
  • High-grade black automotive carpet
  • Heavy-duty speaker terminal
  • Made in California, U.S.A.

  • Enclosure volume: 1.40 ft^3 (net internal)
  • Peak tuning frequency: 34Hz
  • Port size: 9.50" x 2.50"
  • Sub cutout diameter: 2x 7"
  • Dimensions: 30"W x 11"H x 15"D

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 67857869881

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4.3 ★★★★★
Based on 12 reviews
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Verified Purchase
Sal
Whiting, US
★★★★★ 5
Direct Fit and good quality
Color: Single Slat Gloss Black, Size: 2002-2005 E46
For anyone that has owned an E46 knows that even the stock kidney grills are brittle plastic. This aftermarket is about the same quality as stock. It is a direct fit and has the clips where they are supposed to be to keep them in place. The look is also pretty nice. This one is all black and actually looks nice on my black E46. I would recommend especially for the price and shipping was fast.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 29, 2025
C
Verified Purchase
Christian Burt
Louisville, US
★★★★★ 5
Easy install
Color: Single Slat Gloss Black, Size: 2023+G20
Fits well. Made of plastic but very easy install.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026
M
Verified Purchase
Mecha Drew
Lowell, US
★★★★★ 1
I should have read all the other reviews ...
Color: Single Slat Gloss Black, Size: 2010-2013 E92, Color: Single Slat Gloss Black, Size: 2010-2013 E92
I read all the bad reviews, but I gave it a shot anyways Tabs wont clip in place and fitment is slightly off.
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Reviewed in the United States on May 1, 2026
C
Verified Purchase
Charles Sherin
Chelsea, US
★★★★★ 5
Worth it
Color: Single Slat Gloss Black, Size: 2006-2009 E92
For perfect and looks great
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Reviewed in the United States on February 5, 2026
M
Verified Purchase
Madison
Battle Creek, US
★★★★★ 5
Very nice quality
Color: Single Slat Gloss Black, Size: 2019-2022 G20
I have a 2022 330i bmw and it fit perfectly! Looks just like photos online and delivered quick!
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Reviewed in the United States on August 27, 2025

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