SIGMA PRO-18A 18" Professional Series Speaker- v.2
Recommended for professional audio as a woofer in vented enclosures.
Applications
Subwoofer | Woofer | Pro Audio
Box Type: Vented
Specifications
Download Spec Sheet Download Cab Design| SPECIFICATION | |
| Nominal Basket Diameter | 18", 457 mm |
| Nominal Impedance* | 8 Ω |
| Power Rating* | |
| Program Power | 1300 W |
| Watts | 650 W |
| Resonance | 28 Hz |
| Usable Frequency Range | 41 Hz - 2.4 kHz |
| Sensitivity* | 99 dB |
| Magnet Weight | 120 oz. |
| Gap Height | 0.375", 9.5 mm |
| Voice Coil Diameter | 3", 76 mm |
| THIELE & SMALL PARAMETERS | |
| Resonant Frequency (fs) | 28 Hz |
| DC Resistance (Re) | 6.29 Ω |
| Coil Inductance (Le) | 1.9m H |
| Mechanical Q (Qms) | 8.28 |
| Electromagnetic Q (Qes) | 0.3 |
| Total Q (Qts) | 0.29 |
| Compliance Equivalent Volume (Vas) | 441.2 liters / 15.58 cu.ft. |
| Peak Diaphragm Displacement Volume (Vd) | 695 cc |
| Mechanical Compliance of Suspension (Cms) | 0.24 mm/N |
| BL Product (BL) | 22.1 T-M |
| Diaphragm Mass Inc. Airload (MMs) | 130 grams |
| Efficiency Bandwidth Product (EBP) | 93 |
| Maximum Linear Excursion (Xmax) | 6.1 mm |
| Surface Area of Cone (Sd) | 1140 cm2 |
| Maximum Mechanical Limit (Xlim) | 18 mm |
| MOUNTING INFORMATION | |
| Recommended Enclosure Volume | |
| Sealed | N/a |
| Vented | 93-212 liters / 3.3-7.5 cu.ft. |
| Driver Volume Displaced | 0.234 cu.ft. / 6.62 liters |
| Overall Diameter | 18", 457.2 mm |
| Baffle Hole Diameter | 16.56", 420.6 mm |
| Front Sealing Gasket | Yes |
| Rear Sealing Gasket | Yes |
| Mounting Holes Diameter | 0.28", 7.1mm |
| Mounting Holes B.C.D. | 17.25", 438.2mm |
| Depth | 8.15", 207 mm |
| Net Weight | 24.5 lbs, 11.11 kg |
| Shipping Weight | 28.1 lbs, 12.75 kgs |
| MATERIALS OF CONSTRUCTION | |
| Coil Construction | Copper voice coil |
| Coil Former | Polyimide former |
| Magnet Composition | Ferrite magnet |
| Core Details | Vented and extended core |
| Basket Materials | Die-cast aluminum basket |
| Cone Composition | Paper cone |
| Cone Edge Composition | Cloth cone edge |
| Dust Cap Composition | Solid composition paper dust cap |
Frequency Response
Shipping calculated at checkout.
SIGMA PRO-18A 18" Professional Series Speaker- v.2
Product Details
Characteristics
Filter series
Specifications
Nominal basket diameter
Nominal impedance
Power rating program power
Power rating watts
Resonance
Usable frequency range
Sensitivity
Gap height
Voice coil diameter
Thiele & Small Parameters
Resonant frequency fs
Dc resistance re
Coil inductance le
Mechanical q qms
Electromagnetic q qes
Total q qts
Compliance equivalent volume vas
Peak diaphragm displacement volume vd
Mechanical compliance of suspension cms
Bl product bl
Diaphragm mass inc airload mms
Efficiency bandwidth product ebp
Maximum linear excursion xmax
Surface area of cone sd
Mounting Information
Recommended enclosure volume vented
Driver volume displaced
Overall diameter
Baffle hole diameter
Front sealing gasket
Rear sealing gasket
Mounting holes diameter
Mounting holes b c d
Depth
Net weight
Shipping weight
Materials of Construction
Coil construction
Voice coil former
Magnet material
Basket material
Cone composition
Surround
Dust cap composition
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