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HushMat 12850 Kit

For installing speakers in large vehicles

Item # 658HM12850

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Item # 658HM12850

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About the HushMat 12850 Kit

Problem: noise

You've finally got your vehicle's sound system dialed in so you're getting the sound you want…when the car is stationary. When you're moving, though, road noise drowns out the sound you've so carefully put together. Even with the windows rolled up, the level of road noise can force you to turn up the stereo to ear-blasting levels to compete. What can you do to combat this problem?

Solution: Hushmat

Hushmat has the answer: self-adhesive sound-deadening material that lets your speakers perform under ideal conditions. The Hushmat 12850 speaker install kit for large vehicles includes four pre-cut 11-3/4" x 11-3/4" Ultra Silver sheets and two pre-cut 7-3/4" x 7-3/4" Wave Breaker pads. The Ultra Silver sheets cut down on road noise and eliminate distortion-causing vibrations where your speaker meets the metal of your door. Use Wave Breaker pads behind the magnet of your speakers or subs to break up back waves that cloud your sound. Warranty: 60 days.

What's in the box:

  • Four 11.75" x 11.75" damping/foil sheets
  • Two 7.75" x 7.75" Wave Breaker pads
MFR #12850

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Crutchfield response

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More details on the HushMat 12850 Kit

Mark G.

Product Research


HushMat Speaker Kit (for Large-Sized Vehicles): The HushMat Speaker Kit for larged sized vehicles (Cr-12850) contains four HushMat Ultra foil backed damping sheets and two HushMat Wave Breakers.

  • HushMat Ultra: HushMat Ultra is a pressure-sensitive, constrained-layer damper, which has excellent adhesion to many difficult to bond substrates such as oily cold rolled steel, automotive E-coat, primers and finishes, and many plastics including polypropylene. The aluminum foil constraining layer and specially formulated viscoelastic polymer layer combine to give effective vibration damping over a wide temperature range. HushMat Ultra effectively treats low frequency, resonant noise from 0 to 1,000 Hz and can withstand ambient temperatures from -30° up to +550° Fahrenheit.
  • HushMat Wave Breaker: HushMat Wave Breaker can be used to treat standing wave or back wave in speaker locations of your car, truck, or SUV. Wave Breaker is a durable foam placed directly behind the speaker magnet to eliminate standing wave/back wave from that speaker. When HushMat Wave Breaker is placed behind the speaker, back waves are absorbed and broken up. This prevents the bounce back and therefore prevents the distortion. As a result, you get better sounding music.

Simple Installation: The HushMat Speaker Kit requires no surface cleaning or preparation (no alcohol or acetone wash needed). It trims with a standard razor knife or household scissors (no heat gun or special installation tools required). HushMat offers self adhesive peel & stick installation (no secondary glue needed).

Note: Once you adhere a sheet of HushMat Ultra to a surface you have 2-3 minutes of time to pull the sheet back and re-apply it. After 3 minutes the molecular bond begins and you will have difficulty removing the material.

Damping Specs: HushMat meets or exceeds damping specs GMO149M (for General Motor), WSB-M5G58-A1 (for Ford), and MS-CD 629 Type C (for Chrysler).

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Customer Q&A

Crutchfield asked: Why did you buy this?
I want to make sure I get the best sound possible. I want to do the install once and done, and not have to go back to install added products. [ Alejandro  Mar 25, 2019 ]
Right size for application & the price was right. [ Trenton  Feb 04, 2019 ]
Cause it mentioned front door speakers [ JEFF  Nov 11, 2018 ]
recommended by your representative [ Tobias  Sep 20, 2018 ]
Whether it's Dynamat or Hushmat, it is definitely worth the extra money and gain extra db's in the process! [ Sandman51  Jun 17, 2018 ]
Sound deadening can increase the value of any speaker installation. This is a great bang-for-buck addon to any speaker installation option, IMO. A little research before application is advised. [ Justin  Apr 26, 2018 ]
To reduce vibration. [ Joe  Mar 23, 2018 ]
Sound deadening is a must if you are interested in sound quality. It really makes a big difference and the price is reasonable. [ Ronald  Mar 13, 2018 ]
Dynomat overpraced [ John  Jan 21, 2018 ]
Price and worakability [ Greg  Dec 13, 2017 ]
Necessary to add mass to the metal door panels. This lowers their resonant frequency and in turn makes them less susceptible to excitation and subsequent resonance more commonly induced by higher-powered door speakers. [ Ethan  Aug 21, 2017 ]
Price to desired results ratio was the most appealing [ Roland  Jun 25, 2017 ]
Unless you drive a luxury vehicle, you NEED sound deadening to fully exploit the capabilities of your new audio components. [ Bryan  Jun 18, 2017 ]
Price [ Richard  May 15, 2017 ]
To reduce Road noise and improve the sound quality in my 6.0 f350 [ Andrew  Mar 27, 2017 ]
it makes your system sound 10x better than without it [ lucas  Mar 27, 2017 ]
Cheaper than Dynamat, but performs similar. More Bang 4 the Buck [ Matthew  Nov 09, 2016 ]
Comes highly recommend from multiple car audio companies and have used in the passed. Makes the world of difference in an install!! [ David  Oct 15, 2016 ]
kicker have great sound ,hush mat will amplify that sound [ PETER  Jun 18, 2016 ]
Good price looking for basic door deadening [ donald falese  May 27, 2016 ]
I'm looking to improve my sound for my 2014 scion xb. Hope it fits well [ demone  Mar 03, 2016 ]
Sound dampening [ Fred  Feb 06, 2016 ]
for improved door speaker performance [ NORMAN  Dec 09, 2015 ]

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