The Signature Modes
The signature modes are 5 modes, which lie below 600Hz., and are common to all violins. They are:
- A0 - the fundamental air resonance, normally 270 .. 290 Hz
- CBR (also called C2), normally 380 .. 420 Hz
- B1- (also called T1), normally 430.. 480 Hz
- A1 - Second air resonance, normally between B1- and B1+ at around 460 Hz
- B1+ (also called C3), normally 510 .. 580 Hz
Jackson Strad spectra, with AO, CBR, b1-, and B1+ indicated.