Usher 8935A Driver

Here we have an Usher 8935A Woofer (7 Inch Driver)
Good condition and boxed.
Usher Specifications:
Nominal Impedance: 8  ± 15% at 1.0 V 1 kHz
VC Nominal Dia: 42 mm
Lowest Resonance Frequency: FO = 34 Hz ± 3 Hz at 1.0 V
Effective Frequency Range: FO ~ 5 kHz – 10 dB 1 M/1 W
Output Sound Pressure Level: 86 dB/W/M ± 3 dB 3004 0050 0600 Hz AVE
Input: Rated Input 70 W; Maximum Input 100W
Flux Density: 9.7 K ± 10% GUASS
Buzz & Rattle Test: 7.0 V
Polarity: Positive – (Left) Hand Terminal
Baffle Opening: 138 mm
Magnet Dimension / Weight: 120*60*25 (mm)/1055 g
Weight: 2765 g
Dropping Test: 1150 mm 75° ± 2°
Linear Excursion (Xmax): 6 mm
Equivalent Air Volume (Vas): 37.1679 Litre
Mechanical Q (Qms): 2.441
Electrical Q (Qes): 0.388
Total Q (Qts): 0.335
Nominal Impedance: 8 Ω ± 15 % at 1.0 V 1 kHz
VC Nominal Dia: ψ38 mm
Lowest Resonance Frequency: FO = 32 Hz ± 3 Hz at 1.0 V
Effective Frequency Range: FO ~ 10 kHz – 10 dB 1 M/1 W
Output Sound Pressure Level: 86 dB/W/M ± 3 dB 300, 400, 500, 600 Hz AVE
Input: Rated Input 70 W, Maximum Input 100 W
Flux Density: 10.78 K ± 10% GUASS
Buzz & Rattle Test: 7.0 V
Polarity: Positive – (Left) Hand Terminal
Baffle Opening: 138 mm
Magnet Dimension / Weight: 110 x 60 x 25 (mm) / 793 g
Weight: 1.94 kg
Dropping Test: 1150 mm 75° ± 2°
ZNOM: 8 Ω
REVC: 5.8 Ω
KRM: 23.521 mΩ
KXM: 14.114 MH
ERM: 0.515
EXM: 0.58
SD: 0.015 sqm
BL: 7.3649 tm
VAS: 41.001 Litr
CMS: 1283.256 um/n
MMS: 18.1016 Gram
MMD: 17.0453 Gram
FI: 32.009 Hz
FO: 33.022 Hz
QMS: 2.297
QES: 0.402
QTS: 0.342
PMX: 60 W rms
HVC: 16 mm
HAG: 6 mm
XMX: 5 mm
CMX: 5 mm
CMO: 1
ΘVC: 4.1667 C/W