External Valve Plate for Suzuki SUB-30 Harmonica Custom Covers 4-blow flat

4-blow flat

These channels are used to secure reeds to a work surface if and when you need to ream the hole in the reed pad to accept a screw

April 14th

The Blues Harps from that era used the same reed plates as the Marine Band but with different covers

according to Blues Harmonica Guru and Historian Joe Filisko

External Valve Plate for Suzuki SUB-30 Harmonica Custom Covers 4-blow flatThe External Valve Plate (EVP) was developed about a year after the BMH 30 comb. Valves enable you to control the air flow to specific reeds. Because the SUB 30 has three reeds in each chamber as compared to two in a standard diatonic harmonica, valves are necessary to prevent specific reeds from playing when you don't want them to. The stock SUB 30 has 10 valves. The Blue Moon EVP enables you to add 10 more valves via a single component. It requires