Description of Is 10-12: Rockville ISO 10-12 Isolation Platform Acoustic Riser Pad For 10"/12" Subwoofers. Perfect for 10" and 12" Studio monitor speakers or subwoofers. Extremely high-density foam supports up to 250 lbs. . Increases sound quality by reducing vibrations and unwanted sounds. Decreases room resonance from floors and walls. Improves how tight and deep bass sounds. Protects your speaker or subwoofer from scratches. Stops your speaker or subwoofer from moving around. Great for live sound, studio, or home theater applications. Major improvement in sound quality compared to speakers or subwoofers placed directly on a hard surface. Dimensions: 19” x 19” x 1. 75” (48. 2 cm x 48. 2 cm x 4. 4 cm) Fit Guide: MACKIE MRS10 JBL LSR310S Samson M10S Samson Aura D1200 Samson Aura D1500 Rockville APM10B MACKIE DLM12S Mackie MRS 10 PEAVEY DM 115 SUB PEAVEY DM 118 SUB ROCKVILLE RBG10S ROCKVILLE RBG12S ROCKVILLE SBG1124 ROCKVILLE SBG1154 KRK 12S KRK 8s KRK 10s ADAM Audio Sub7 ADAM Audio Sub8 ADAM Audio Sub10 ADAM Audio T10S Yamaha HS8S Gentle 7050C Gentle 7350A Gentle 7360A Dynaudio 9S Dynaudio 18S Persons Temblor T10 Neumann KH 750 Beranger Necks K10S Beranger Euro live B1200D-PRO Focal Sub6 Subwoofer Pros Studio Sub 12 Blue Sky Sub12D Bose F1 Bose B1 Bose B2 Electro-Voice ELX200-12SP Fishman SA Sub Turbosound IQ15B Turbosound inspire iP12B Electro-Voice ELX200-12S Many More!