*NODE,NSET=MID
    1012,   -0.12500,    -6.66667E-02,-0.30000
    1013,     0.0000,    -6.66667E-02,-0.30000
    1014,    0.12500,    -6.66667E-02,-0.30000
    1022,   -0.12500,     6.66667E-02,-0.30000
    1023,     0.0000,     6.66667E-02,-0.30000
    1024,    0.12500,     6.66667E-02,-0.30000
*element,type=z1,file=speaker,elset=z1
10001,1012,1013,1014,1022,1023,1024
*substructure property,elset=z1
*BOUNDARY
MID,1,3
**------------------------------------------------
*STEP
*FREQUENCY,EIGENSOLVER=LANCZOS,norm=mass
149,,,-1
*OUTPUT,FIELD,freq=0
*END STEP
**------------------------------------------------
*STEP,NAME=SSD-DIRECT
*STEADY STATE DYNAMICS, DIRECT, FREQUENCY SCALE=LINEAR,INTERVAL=RANGE
300,400,50,1
*sload
10001,load1083,1.0
*OUTPUT, FIELD,freq=0
*OUTPUT, HISTORY
*NODE OUTPUT,NSET=MID
RF,
*END STEP
*STEP,NAME=SSD-SUBSPACE
*STEADY STATE DYNAMICS, SUBSPACE, FREQUENCY SCALE=LINEAR,INTERVAL=RANGE
300,400,50,1
*sload
10001,load1083,1.0
*OUTPUT, FIELD,freq=0
*OUTPUT, HISTORY
*NODE OUTPUT,NSET=MID
RF,
*END STEP