# Eminence Delta Pro 12-450-4 12" Professional Midbass Woofer 4 Ohm

**Manufacturer:** Eminence Speaker  
**MPN:** `DELTA PRO 12-450-4`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Eminence Speaker |
| Manufacturer name | Eminence Speaker |
| Manufacturer | Eminence Speaker |
| DimensionUnit | inch |
| Extra Product Name | Eminence Delta Pro 12-450-4 12" Professional Midbass Woofer 4 Ohm |
| UPC | 876358002573 |
| Weight | 12.85 |
| WeightUnit | lbs |
| depth | 5.5 |
| diameter | 12.38 |
| height | 12.38 |
| height_Attrib | Overall Outside Diameter |
| length | 5.5 |
| length_Attrib | Depth |
| moq | 1 |
| MPN | DELTA PRO 12-450-4 |
| multiple | 1 |
| qtyInStock | 0 |
| SKU | 290-4508 |
| snippet | Eminence Delta Pro 12-450-4 12" Professional Midbass Woofer 4 Ohm. Part Number: 290-4508 by Eminence Speaker. |
| width | 12.38 |
| width_Attrib | Overall Outside Diameter |
| Brand | Eminence Speaker |
| Model | Delta Pro 12-450-4 |
| Part Number | 290-4508 |
| Unit of Measure | Each |
| Nominal Diameter | 12" |
| Bolt Circle Diameter | 11.57 |
| Power Handling (RMS) | 450 Watts |
| Power Handling (MAX) | 900 Watts |
| Impedance | 4? |
| Frequency Response | 45 to 3,800Hz |
| Sensitivity | 97.4dB 2.83V/1m |
| Voice Coil Diameter | 2.5" |
| Resonant Frequency (Fs) | 45Hz |
| DC Resistance (Re) | 3.65? |
| Voice Coil Inductance (Le) | 0.45mH |
| Mechanical Q (Qms) | 7.97 |
| Electromagnetic Q (Qes) | 0.41 |
| Total Q (Qts) | 0.39 |
| Compliance Equivalent Volume (Vas) | 4.86ft? |
| Mechanical Compliance of Suspension (Cms) | 0.35mm/N |
| BL Product (BL) | 9.51T?m |
| Maximum Linear Excursion (Xmax) | 5.2mm |
| Surface Area of Cone (Sd) | 532.4cm? |
| Cone Material | Paper |
| Surround Material | Cloth |
| Voice Coil Wire Material | Aluminum |
| Voice Coil Former | Kapton? / Polyimide |
| Basket / Frame Material | Cast Aluminum |
| Magnet Material | Ferrite |
| Overall Outside Diameter | 12.38" |
| Baffle Cutout Diameter | 11.07" |
| Depth | 5.5" |
| # Mounting Holes | 8 |
| Sealed Volume | 1.54ft? |
| Sealed F3 | 91Hz |
| Vented Volume | 3.6ft? |
| Vented F3 | 51Hz |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| parts-express.com | 290-4508 |  |  | None | 1 |

---
Structured data: `/python/html6/product/500/154500000/154797000/part_--DELTAPRO124504---EminenceSpeaker--08aa42e7a2.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp