Evans Hydraulic Blue Drum Head, 13" Sample Logic Maximum Sound Pressure Level (SPL)

Maximum Sound Pressure Level (SPL) 118 dB @ 1 Meter

9mm Walnut (Inner & Outer Ply Black Walnut)

19" Rack Mount Chassis

The "straight wire" passive circuit design doesnt consist of any audio buffers or transformers

Evans Hydraulic Blue Drum Head, 13" Sample Logic Maximum Sound Pressure Level (SPL)Hydraulics feature two plies that sandwich a thin layer of oil and give the fat, deep, and short sound pioneered by early 70's rock and roll. The oil decreases sustain and enhances attack and low end. Additionally, Hydraulics are famously easy to tune making them a perfect fix for troublesome drums and younger players looking for instant sound. 13" drum head with a thin layer of oil between two plies of film to suppress unwanted overtones Two plies