EVANS B12DRY [Genera Dry 12] [1ply, 10mil + 2mil control ring with vents] Monitor speaker To prevent cross-contamination from cleaners

To prevent cross-contamination from cleaners and polishes

signal attenuation is reduced and stable signal transmission is achieved over a wide frequency band

*Dimensions when folded: 88 x 53 x 13 cm

And even more refined

EVANS B12DRY [Genera Dry 12] [1ply, 10mil + 2mil control ring with vents] Monitor speaker To prevent cross-contamination from cleanersWe are a drum head manufacturer that produces highly uniform drum heads using innovative ideas and computer control. Finish: Coated + pinhole processing Thickness: Single Ply, 10mil + 2mil control ring with vents Size: 12 inches The Genera features a 10 mil, 1 ply, 2 mil harmonic control ring on the underside of the headstock to tame excess harmonics and sustain, while the "Dry" model features small vent holes around the edge for a tighter sound.