TC Sounds Epic 12 - Manual (Page 2)

Epic 12”
Low Frequency Driver
Thiele Small & Driver Parameters
Parameter 12" Epic Description
Qts 0.39 Total Q
Qes 0.415 Electrical Q
Qms 7.8 Mechanical Q
Fs 24 Hertz, Free Air Resonance
Res 3.66 Ohms, DC resistance
Ls 3.2 H, series inductance
Lp 2.9 H, lossy series inductance
Rp 4.2 Ohms, loss across Lp
Dia 250 m meters, effective
Vas 91 liters, air volume equivalent
mms 163 grams, effective mass
cms 269 um/N, compliance
bl 14.8 T*m, motor strength
SplSens 86.6 dBSPL max @1W absorbed
Parameter 12" Epic Description
Geometric Stroke 18.1 Millimeters, (voice coil - gap) / 2
70% BL 22.9 Millimeters, BL is 0.7 original value (one way)
Xmech 32.7 Mechanical displacement limit (one way)
Long Term Power 500 Watts
Program Power 2000 Watts, short term peak power limit
*Impedance and TS parameters measured with the coil in series.
*For full system alignment and enclosure recommendations, please visit our website: www.tcsounds.com