audio device pa-18 สเป็คใหนเป็นของจริงครับ เจอหลายสเป็คจริงๆเริ่มงงครับ
1.จากเว็บไพศาล
General Specifications :
Nominal diameter
. 457mm/18in
Power handling
800W RMS / 3200W peak power
Rate impedance
8 Ohm
Sensitivity 1w@1m
.. 96dB
Frequency range
.. 42-500Hz
Voice coil diameter
.. 101.6mm(4in)
Material :
Basket
Casting aluminium
Cone and dust cap
.. High density paper
Surround
Treated cloth
Gasket
EVA
Voice coil former
.. Glass fiber
Voice coil wire
.. Copper
Voice coil winding
... 25mm (inside/outside)
Magnet weight
.. 125.7 Oz
Thiele & Small Parameter
Resonance frequency
..
Fs 46.05 Hz
D.C. Resistance
..
.
Revc 5.8 Ohm
Mechanical Q factor
..
.
. Qms 8.73
Electronmagnetic Q factor
..... Qes 0.43
Total Q factor
..
.
. Qts 0.41
Compliance equivalent volume
VAS 154.49 Litr
Sure face of cone
.. Sd 0.122 sqm
Effective moving mass
.. Mms 164.76 g
BL factor
. BL 25.20 Tesla m
Voice coil inductance @ 1KHz
.. Le 0.78 mH
Reference efficiency
. ηο 3.3%.
Air gap height
. Hag 13mm FREQUENCY RESPONSE AND IMPEDANCE DATA
Voice coil height
Hvc 25mm
Voice coil over-hung
. Xmax 6mm
Mounting and Packed Information
Overall diameter
.. 476mm
Overall depth
190mm
Bolt circle diameter..
. 450mm
Baffle cut-out diameter
.. 424mm
Mounting holes diameter
.. 8 x φ 10.5mm
Unit weight
.. 13.0Kgs(28.60lbs)/Pc
Packed weight
14.7Kgs(32.34lbs)/Pc
Packed dimensions
.. (mm) 505(W) x 505(D) x 250(H)
(inch) 19.9(W) x 19.9(D) x 9.8(H)
(cu,ft) 2.25
2.น่าจะสเป็คส่งนอก
3.จากเว็บ
http://www.sahasound.com/
4.จากกล่องใหม่
