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JBL - MTC-300BB8 - BACKBOX FOR 8
JBL - MTC-300BB8 - BACKBOX FOR 8
JBL - MTC-300BB8 - BACKBOX FOR 8
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JBL - MTC-300BB8 - BACKBOX FOR 8" CONTROL 300 SERIES DRIVERS

Marsoni M251S
Sale price$145.00
Pay 4 payments of $36.25 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
JBL - MTC-300BB8 - BACKBOX FOR 8" CONTROL 300 SERIES DRIVERSMTC 300BB8 1 Cubic Foot Rectangular Backbox for Control 300 Series 8" Drivers, Fits Control 328C CT, Extra thick 16 gauge Metal Construction, Top Lined with 0. 5" (12mm) thick MDF to eliminate resonances and to provide extra bass response, Knockouts on top and side, 10. 6" (268mm) Height x 15" (380mm) Outside Dia, UL Listed, Mounting Screws included (Priced & sold as each)
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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
4.7 ★★★★★
Based on 1305 reviews
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Product Reviews
A
Verified Purchase
alereyes68
West Palm Beach, US
★★★★★ 5
Does the job!
Color: Black
This added a beautiful space to my room! Very easy to install and includes everything you need to do so!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 28, 2026
F
Verified Purchase
Fran Kelly
Waukegan, US
★★★★★ 5
Quality
Color: Black
Beautiful….well made
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
L
Verified Purchase
Lacretia G
Houston, US
★★★★★ 5
Use all pieces included
Color: Black
Hold good weight
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
A
Verified Purchase
arueby
Louisville, US
★★★★★ 5
Well made easy to install
Color: Pine
Well worth the cost easy to install look great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 11, 2026
A
Verified Purchase
Al Z. NorCal
Cuba, US
★★★★★ 3
Just garbage
Color: White
Just terrible I put 2 screws on barely any problems but when I put 4 it got worse just awful and the anchor on one of the shelves couldn’t fit in seamless properly
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026

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