Use :                Motorcycle / Car / Bike

Brand :            BESTER AUDIO OR Custom your brand

High cost performance series

SPECIFICATIONS

Model No.                                               BT-E65C                                                             BT-E80C

Nominal Diameter ------------------------------- 6.5 inch / 165mm  ------------------------------------------ 8 INCH / 204MM

RMS Power ------------------------------ 50 W  -------------------------------------------- 80W

MAX Power ----------------------------- 100 W --------------------------------------------160W

Sensitivity(1w/1m) ---------------------- 90dB ± 3dB  ------------------------------------- 92dB ± 3dB

Frequency Range-------------------------144~ 13  KHz  ----------------------------------- 77~ 10  KHz

Voice Coil Diameter----------------------1 Inch / 25mm  -----------------------------------1.2 Inch / 30mm

Air Gap Height --------------------------- 7 mm     -----------------------------------------  9 mm

THIELE&SMALL PARAMETERS

Resonant Frequency,FS----------------------- 144 Hz --------------------------------------- 77 Hz

D.C.Voice Coil Resistance,Re ----------------- 3.4 ohms -------------------------------------3.4 ohms

Electrical Quality Factor,Qes ------------------1.6  ------------------------------------------- 1.4

Total Quality Factor,Qts -----------------------1.69  ------------------------------------------ 1.1

Equivalent Air Volume to Cms,Vas -----------3.95L/  FT -------------------------------------- 17.4L/  FT

Mechanical Compliance,Cms -----------------------119.2 uM/N --------------------------------------------------151.8 uM/N

Mechanical Resistance,Rms-------------------------0.35 kg/s -----------------------------------------------------0.65 kg/s

BL Factor,BI-----------------------------------------------4.45 N/A ---------------------------------------------------- 4.5 N/A

Effective surface area,Sd------------------------------13.27 m M -------------------------------------------------- 21.3 m M

Linear Excursion,Xmax--------------------------------1.5  mm  ----------------------------------------------------- 2  mm

MATERIALS

Basket------------------------------------------Steel  --------------------------------------------- Steel

Cone-------------------------------------------Paper ----------------------------------------------Paper

Surround--------------------------------------Cloth ---------------------------------------------- Cloth

Voice Coil Wire-------------------------------CCAW-----------------------------------------------CCAW

Voice Coil Bobbin-----------------------------KSV  ----------------------------------------------- KSV

Magnet Material------------------------------Ferrite  --------------------------------------------- Ferrite

MOUNTING INF ORMATION

Overall Diameter------------------------165 mm -------------------------------------------------- 210 mm

Bolt Circle Diameter---------------------156MM  --------------------------------------------------198 MM

Baffle Cutout Diameter-----------------146mm  ---------------------------------------------------184mm

Mounting Depth------------------------69mm  ----------------------------------------------------78mm

Net Weight------------------------------0.84Kg -----------------------------------------------------1.36Kg