# Eminence Definimax 4012ULF-8 12" Cast Frame Driver

**Manufacturer:** Eminence Speaker  
**MPN:** `4012ULF-8`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Eminence Speaker |
| Manufacturer name | Eminence Speaker |
| Manufacturer | Eminence Speaker |
| DimensionUnit | inch |
| Extra Product Name | Eminence Definimax 4012ULF-8 12" Cast Frame Driver |
| UPC | 876358002580 |
| Weight | 23.4 |
| WeightUnit | lbs |
| depth | 5.32 |
| diameter | 12.38 |
| height | 12.38 |
| height_Attrib | Overall Outside Diameter |
| length | 5.32 |
| length_Attrib | Depth |
| moq | 1 |
| MPN | 4012ULF-8 |
| multiple | 1 |
| qtyInStock | 0 |
| SKU | 290-4510 |
| snippet | Eminence Definimax 4012ULF-8 12" Cast Frame Driver. Part Number: 290-4510 by Eminence Speaker. |
| width | 12.38 |
| width_Attrib | Overall Outside Diameter |
| Brand | Eminence Speaker |
| Model | 4012ULF-8 |
| Part Number | 290-4510 |
| Unit of Measure | Each |
| Nominal Diameter | 12" |
| Bolt Circle Diameter | 11.69 |
| Power Handling (RMS) | 1200 Watts |
| Power Handling (MAX) | 2400 Watts |
| Impedance | 8? |
| Frequency Response | 37 to 200Hz |
| Sensitivity | 90.7dB 2.83V/1m |
| Voice Coil Diameter | 4" |
| Resonant Frequency (Fs) | 40Hz |
| DC Resistance (Re) | 6.2? |
| Voice Coil Inductance (Le) | 4.32mH |
| Mechanical Q (Qms) | 12.13 |
| Electromagnetic Q (Qes) | 0.32 |
| Total Q (Qts) | 0.31 |
| Compliance Equivalent Volume (Vas) | 1.46ft? |
| Mechanical Compliance of Suspension (Cms) | 0.1mm/N |
| BL Product (BL) | 27.38T?m |
| Maximum Linear Excursion (Xmax) | 6.7mm |
| Surface Area of Cone (Sd) | 2259cm? |
| Cone Material | Coated Paper |
| Surround Material | Cloth |
| Voice Coil Wire Material | Copper |
| Voice Coil Former | Kapton? / Polyimide |
| Basket / Frame Material | Cast Aluminum |
| Magnet Material | Ferrite |
| Overall Outside Diameter | 12.38" |
| Baffle Cutout Diameter | 11.07" |
| Depth | 5.32" |
| # Mounting Holes | 8 |
| Sealed Volume | 0.208ft? |
| Sealed F3 | 109.1Hz |
| Vented Volume | 0.484ft? |
| Vented F3 | 65.89Hz |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| parts-express.com | 290-4510 |  |  | None | 1 |

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Structured data: `/python/html6/product/500/17000000/17447500/part_--4012ULF8---EminenceSpeaker--a342ab1289.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp