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Eminence Sigma Pro-18A-2 18" Cast Frame Driver
Brand Eminence Speaker
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Product Description
Manufacturer Part Number: Sigma Pro-18A-2
Eminence's Sigma Pro-18A-2 18" cast frame speaker performs superbly in moderately-sized professional PA subwoofer loudspeaker systems.
Key Features:
Overview:
Eminence Sigma Pro-18A-2 18" Cast Frame Driver
The Eminence Sigma Pro-18A-2 18" cast frame speaker is recommended for professional audio as a woofer or subwoofer in vented enclosures. It has been engineered for durability as well as exceptional sound quality, and will serve well when loaded into high-output live sound or music playback systems. Made in the USA. 7-year manufacturer's warranty!
Specification:
Manuals & Resources:
Eminence's Sigma Pro-18A-2 18" cast frame speaker performs superbly in moderately-sized professional PA subwoofer loudspeaker systems.
Key Features:
- Copper voice coil on polyimide former
- Die-cast aluminum basket
- Vented and extended pole piece
- Paper cone with cloth cone edge
- Great replacement for the Dayton Audio PF460-8 18" Cast Frame Driver 4" VC
Overview:
Eminence Sigma Pro-18A-2 18" Cast Frame Driver
The Eminence Sigma Pro-18A-2 18" cast frame speaker is recommended for professional audio as a woofer or subwoofer in vented enclosures. It has been engineered for durability as well as exceptional sound quality, and will serve well when loaded into high-output live sound or music playback systems. Made in the USA. 7-year manufacturer's warranty!
Specification:
Product Details | |
|---|---|
| Brand | Eminence Speaker |
| Model | Sigma Pro-18A-2 |
| Part Number | 290-427 |
| UPC | 876358000395 |
| Unit of Measure | Each |
| Weight | 27.9 |
Product Specifications | |
|---|---|
| Nominal Diameter | 18" |
| Power Handling (RMS) | 650 Watts |
| Power Handling (MAX) | 1300 Watts |
| Impedance | 8Ω |
| Frequency Response | 41 to 2,400Hz |
| Sensitivity | 99dB 2.83V/1m |
| Voice Coil Diameter | 3" |
Thiele-Small Parameters | |
|---|---|
| Resonant Frequency (Fs) | 28Hz |
| DC Resistance (Re) | 6.29Ω |
| Voice Coil Inductance (Le) | 1.9mH |
| Mechanical Q (Qms) | 8.28 |
| Electromagnetic Q (Qes) | 0.3 |
| Total Q (Qts) | 0.29 |
| Compliance Equivalent Volume (Vas) | 15.58ft³ |
| Mechanical Compliance of Suspension (Cms) | 0.24mm/N |
| BL Product (BL) | 22.1T·m |
| Diaphragm Mass Inc. Airload (Mms) | 130g |
| Maximum Linear Excursion (Xmax) | 6.1mm |
| Surface Area of Cone (Sd) | 1140cm² |
Materials of Construction | |
|---|---|
| Cone Material | Paper |
| Surround Material | Cloth |
| Voice Coil Wire Material | Copper |
| Voice Coil Former | Kapton® / Polyimide |
| Basket / Frame Material | Cast Aluminum |
| Magnet Material | Ferrite |
Mounting Information | |
|---|---|
| Overall Outside Diameter | 18" |
| Baffle Cutout Diameter | 16.56" |
| Depth | 8.15" |
| # Mounting Holes | 8 |
Parts Express Staff Recommended Enclosure Volume | |
|---|---|
| Sealed Volume | 2.5ft³ |
| Sealed F3 | 76.9Hz |
| Vented Volume | 5ft³ |
| Vented F3 | 39.5Hz |
Manuals & Resources:
Attention CA Residents: Prop 65 Warning
WARNING:
This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
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