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Pearl's Superior Shell Technology
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Pearl's Superior Shell Technology .png)
Pearl Superior Shell Technology utilizes a proprietary technique for achieving the ultimate air chamber. It begins with select woods choses for their unique acoustic attributes, milled to precise thickness with overlapping scarf joint seams for perfect air-tight fit. The wood plies are saturated with Pearl's proprietary "AcoustiGlue" that permeates every pore and dries to the exact consistency as the wood for optimum resonance. Finally the plies are formed in high-temperature molds with 1000PSI of hydraulic pressure to produce perfect drum shells that exhibit superior tone, optimal resonance and extreme strength.
Scarf Joints
Our Scarf Joint seams provide 800% greater surface area than conventional butt joints. This provides extreme strength and integrity to the shell while simultaneously eliminating air-pockets that can disrupt vibration so the shells vibrate uniformly for superior resonance. Other companies use butt joints where the seams are simply butted together. A butt joint works if the ends meet exactly, but often they don't and a gap is formed. Within the gap is air which is an excellent insulator. Air stops sound. For example, recording studios are built with a room within a room with air separating the two to stop sound from interfering with recordings. This is great for studios but not for drums. As drummers we want drums to vibrate freely and evenly without air pockets to impede vibration. With S.S.T., our use of scarf joints ensures no gaps, no air pockets, so the shells vibrate fully and uniformly for superior resonance. | Proprietary "AcoustiGlue"
"AcoustiGlue" is Pearl's special proprietary adhesive that hardens within the shell to the same density as the wood it binds thus allowing the shells to respond as if they were made from a single-ply of wood for superior tone and optimal resonance. During shell formation the hydraulic mold is heated and the glue is literally boiled into the pores of the wood to ensure complete adhesion. Simultaneously, 1000 PSI is applied for thorough bonding of the plies to create the finest drum shell in the world. No other system uses this perfect combination of heat and pressure to insure a perfect drum shell with extreme strength and tonal character. Now we have a perfect, gapless air chamber. The shell is then trimmed and the ends squared to assure overall tuning consistency and head seal.
Bearing Edges
This critical step is another key component in the quality of our shells. Our standard edges feature a 45˚ angled bearing edges on the inner diameter with 45˚ backcut over the second ply from the outside of the shell for highly focused contact point for outstanding balance between attack and resonance. Our Reference drums feature rounded 45˚ edges on 8" to 13" toms and fully rounded edges on drums 14" and larger for more head-to-shell contact area for maximum shell vibration and resonance.
A Brilliant Finish
Finally Pearl's signature finish is applied to the drum. Pearl's painting process matches beauty with durability. Whether it's a custom Masterworks finish, designed to your specifications, or the 31-step super high gloss finishes found on Reference and Masters Premium - your drums will look as good as they sound for years to come. | 
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