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ดอกลำโพง 21 นิ้ว AUDIO DEVICE PA-21 EXTRA โครงหล่อ 2000W ว้อย 125มม ลำโพงสำหรับแข่งโดยเฉพาะ !!
General Specifications :
Nominal diameter……. 533mm/21in
Power handling ……… 2000W RMS / 8000W peak power
Rate impedance……… 8 Ohm
Sensitivity 1w@1m….. 97.5dB
Frequency range…….. 35-500Hz
Voice coil diameter….. 116.75mm(4.6in)
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…... 31.7mm
Magnet weight……….. 393.4 Oz
Thiele & Small Parameter
Resonance frequency…………..… Fs 35.32 Hz
D.C. Resistance…………..….…… Revc 5.1 Ohm
Mechanical Q factor………..….…. Qms 6.31
Electronmagnetic Q factor……..... Qes 0.32
Total Q factor…………..….………. Qts 0.30.
Compliance equivalent volume…… VAS 256.89 Litr
Sure face of cone………………….. Sd 0.169 sqm
Effective moving mass…………….. Mms 323.50 g
BL factor……………………………. BL 33.80 Tesla m
Voice coil inductance @ 1KHz….. Le 0.996 mH
Reference efficiency………………. ηο 3.41%.
Air gap height………………………. Hag 13.5mm FREQUENCY RESPONSE AND IMPEDANCE DATA
Voice coil height…………………… Hvc 31.7mm
Voice coil over-hung………………. Xmax 9.1mm
Mounting and Packed Information
Overall diameter…………….. 540mm
Overall depth………………… 254.2mm
Bolt circle diameter..………. 518.5mm
Baffle cut-out diameter…….. 489mm
Mounting holes diameter….. 6 x φ6.5mm
Unit weight………………….. 31.50Kgs(69.30lbs)/Pc
Packed weight……………… 33.50Kgs(73.70lbs)/Pc
Packed dimensions……….. (mm) 600(W) x 600(D) x 295(H)
(inch) 23.6(W) x 23.6(D) x 11.6(H)
(cu,ft) 3.75
