3D Geophone PE-6/B; 4.5 ... 500 Hz(*)

(*) spurious frequency at 140 Hz

No Damping Resistor
All values base on the manufacturer specification sheet, and will scatter about 5%.

Gs = 28.8 V/(m/s); Ds = 0.56; fs = 4.5 Hz

2 Zeros
z1 = 0
z2 = 0

2 Poles
p1 = -15.88    23.43i
p2 =  -15.88   -23.43i

Normalisation Factor
a = 1.0