Amazon.com: Pyle Sound Dampening Speaker Riser Foam - Audio Acoustic Noise Isolation Platform Pads Recoil Stabilizer w/ Rubber Base Pad For Studio Monitor, Subwoofer, Loud Speakers (10.4 x 13 x 2.8 Inch) : Everything Else
RE Audio SEX10D4 Sub + MDFS10 10" Sub Enclosure + Sound Dampening
Pyle PSI04 - Acoustic Sound Isolation Dampening Recoil Stabilizer Speaker Riser (for Studio Monitor, Subwoofer, Loudspeakers, Shelf Speakers, etc.) 7.5'' x 9.0'', Sold as Single Unit - Walmart.com
Speaker Acoustic Pads Isolation Pad Studio Dampening Platform Wedge Riser Monitor Panel Musical Mat Foams Cushionreplace Sound - AliExpress
Car Soundproofing Pad Noise Reduction Foam Subwoofer Pad Car Sound Deadener Mat Insulation Acoustic Dampening Foam Car Supplies - AliExpress
Pyle PSI12 - Acoustic Sound Isolation Dampening Recoil Stabilizer Speaker Riser Platform Base (for Studio Monitor, Subwoofer, Loudspeakers, Shelf Speakers, etc.) 22.5'' x 18.1'' - Walmart.com
Amazon.com: Pyle Sound Dampening Speaker Riser Foam - Audio Acoustic Noise Isolation Platform Pads Recoil Stabilizer w/ Rubber Base Pad For Studio Monitor, Subwoofer, Loud Speakers - PSI15 (15 x 15 x