MB Quart RS1-213 + NVX 5.25" Speaker Baffles

Insanely genius product

I've installed car audio for years and was always looking for the best way to improve the door panel and mounting locations. I've done everything from making wood brackets to sound deadening the whole door panel inside and out, even that doesn't compare to what these simple silicone baffles do. For a fraction of the price. I'm ordering more sizes now for the future.

Restoring my van

Great product.big improvement on the sound of the speakers in my van

Restoring my van

Great product.big improvement on the sound of the speakers in my van

who would have thought

I wasn't too sure about buying these but I am so glad I did. I want more but when I looked out of stock. I guess everyone wants them and should buy them.

By DANNY on August 21, 2020 Verified purchase

Good value that really enhanced and protects my golf cart speakers

By Robert on January 13, 2024 Verified purchase

Looks good

By Brett on October 8, 2025 Verified purchase

Protecting them sonic gems

I'd venture to say if you have an older vehicle, especially an older pickup, we know all too well the havoc that moisture+time can wreak on all sorts of internal door components, despite good window seals. I just had a refresher course on that topic when replacing the side view mirror; decided since I had the panel off, why not do some cleaning and maintenance... pulled out some corroded butted MTX terminator 5.25, terminals, frame, all in sad sad shape. they were due for replacement, (passenger door driver suffered puncture wound beyond cosmetics)

To stay ahead of the elements and protect the fresh upgraded replacement speakers, I am using the 5.25 nix baffles in the doors of my '90 Jeep Comanche.

first impressions. the bolt pattern aligns great with stock speaker mounting, thumbs up.
the material feels like it will last many years. rubber baffle material also act like a gasket between the metal of the door and the driver. the back of the baffle leaves about an 1.5" gap between outer doorskin, where I placed the foam circle. it extends plenty far beyond the rear of a Kicker KSC5 driver, which is promising for protecting the rear assembly of the driver.
I treated the door with NVX 91mil thick damping material. one is treated, one is untreated. I will do a comparison of how the baffle performs in a damped door environment, Vs. undamped door environment. will report back soon

it should be noted that if the door panel doesn't allow for much space between driver mounting surface and inside of door panel, one may have to trim some of the material from the baffle mounting lip. test fit door panel before trimming the ring though!

if this^^ doesn't apply to your situation, the extra material acts to channel more sonic energy into the listening space, less lost to the voids of the back of your door panel.

By Dylan on September 16, 2025 Verified purchase