B&C 6.5" 300 Watts 8 Ohm Neodymium Coaxial Car Speaker - 6HCX51-8

Marsoni

M251S

$152.24

Get it in 3 business days with 1 day shipping. Friday, May 29

B&C 6.5" 300 Watts 8 Ohm Neodymium Coaxial Car Speaker - 6HCX51-8Overview 300 W continuous program power capacity 70 nominal coverage 90 18000 Hz response 92 dB sensitivity Single Neodymium magnet assembly 20. 1 mm (0. 79) HF unit exit diameter Specifications Nominal Diameter: 170 mm (6. 5 in) Nominal Impedance: 8 Minimum Impedance LF: 6. 0 Minimum Impedance HF: 7. 5 Frequency Range: 90 18000 Hz Dispersion Angle: 70 Woofer Cone Treatment: TWP Waterproof Both Sides Magnet Material: Neodymium Ring Specifications LF

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I used this as a topper to butyl sound deadening material on the floor and side panels and am very pleased. It was generally easy to use. It is very sticky and cannot be easily repositioned as the foam will separate from the sticky side if you try, but its not a big deal. I have yet to run the car but the panels are much quieter when tapped on vs just the butyl alone, and this stuff weighs almost nothing.

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Reviewed in the United States on February 17, 2026

Verified Purchase

Bret Jackson

Battle Creek, US

★★★★★ 5

Good deadening

Model: 197mil 31 sqft Car Sound Deadening Mat

This sound deadening works well and has good adhesion .

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Reviewed in the United States on May 18, 2026

Verified Purchase

Mags

Natrona Heights, US

★★★★★ 5

Easy to install and great value.

Model: 197mil 31 sqft Car Sound Deadening Mat

Very easy to cut and install with the rollers I bought separately. It adheres well even though I was installing it when the weather was closer to 40-50 degrees. Definitely helps to deaden the sound from the bare sheet metal.

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Reviewed in the United States on April 2, 2026

Verified Purchase

Chuck P

Phoenix, US

★★★★★ 1

Garbage

Model: 197mil 31 sqft Car Sound Deadening Mat

Straight garbage, I tried to cut corners on cost of building an spl car and should have stuck with dynamat or something like that. This is NOT for sound deadening…… Garbage product!!!

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Reviewed in the United States on June 5, 2026