PRO Audio 18 Inch PA Subwoofer Professional Audio Speaker China Subwoofer
Product main features:
- 900Watts RMS power
- 97dB Sensitivity 1w/1m
- 42Hz-1.7K Hz frequency response range
- 125mm/5 inch inside/outside copper voice coil with polyimide fiberglass former
- Triple-roll surround and corrugated straight cone geometry
- Reinforced Conex spider to improve linearity control
| General Specifications |
| Nominal Diameter |
460/18 |
mm/inch |
| Rated Impedance |
8 |
ohm |
| Nominal Power handling |
900 |
Watts |
| Program Power |
1800 |
Watts |
| Sensitivity(lw/lm) |
97 |
dB |
| Frequency Range |
42-1.7K Hz |
Hz |
| Minimum Impedance(Zmin) |
5.2 |
ohm |
| Voice Coil Diameter |
125/5 |
mm/inch |
| Voice Coil Material |
Copper |
|
| Number of layers |
2 |
|
| Magnet gap depth |
12 |
mm |
| Surround Shape |
W-roll |
|
| Basket |
Cast Aluminium |
|
| Magnet |
260 Ferrite |
|
| Mounting Information |
| Overall Diameter |
466 |
mm |
| Bolt Circle Diameter |
445 |
mm |
| Baffle Cutout Diameter |
422 |
mm |
| Overall Depth |
210 |
mm |
| Net Weight |
17.3 |
kg |
| Shipping weight |
18.2 |
kg |
| Shipping Box |
490*490*250 |
mm |
| Thiele-Small Parameters |
| Resonance frequency |
Fs |
42 |
Hz |
| DC resistance |
Re |
5.3 |
ohm |
| Mechanical factor |
Qms |
9.19 |
|
| Electrical factor |
Qes |
0.32 |
|
| Total factor |
Qts |
0.31 |
|
| Mechanical compliance |
Cms |
0.07 |
mm/N |
| Mechanical resistance |
Rms |
6.9 |
mech-ohm |
| of suspension losses |
| Effective Moving Mass |
Mms |
213.4 |
gr |
| Half-space efficiency |
Eff |
2.98 |
% |
| BL Factor |
BL |
30.4 |
T.m |
| Equivalent Cas air load |
Vas |
134.3 |
liters |
| Voice-coil inductance |
LelK |
2 |
mH |
Audited Supplier 
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