Specifications
SKU: RAINBOW-IL-S4-2-BMW
Rainbow IL-S4.2 BMW
The Rainbow Intelligence Line IL-S4.2 BMW is a 2-way, 4-inch aluminum cone component speaker set. It is intended for a BMW audio upgrade, with vehicle-specific compatibility to be confirmed before ordering.
Key Specifications
| Model | IL-S4.2 BMW |
| Type | 2-way component speaker set |
| Size | 4 inches |
| Cone material | Aluminum |
| Peak power | 40 W |
| Power rating (manufacturer listed) | 20 W |
| Sensitivity | 87 dB/W/m |
| Frequency response | 110 Hz – 20 kHz |
| Impedance | 4 ohms |
| Part number | 280145 |
Compatibility and Installation
Please provide your BMW model, chassis, year, trim and factory audio configuration for a fitment check. The manufacturer product page does not list detailed vehicle-year compatibility. Mounting, connectors, available space and amplifier matching must be checked for your vehicle.
Frequently Asked Questions
1. What type of speaker is the IL-S4.2 BMW?
It is a 2-way, 4-inch aluminum cone component speaker set from Rainbow’s Intelligence Line.
2. What are the power specifications?
Rainbow lists 40 W peak power and a 20 W power rating. These are separate figures; the peak figure should not be used as a continuous power rating.
3. What impedance does it use?
The official specification is 4 ohms. Amplifier and factory-system compatibility should be checked before installation.
4. Will it fit my BMW?
Send your vehicle model, chassis, year and original audio details to City Sound. Installation depends on the mounting and electrical configuration; universal fitment is not claimed.
5. How do I confirm availability and installation pricing?
Contact City Sound to confirm current stock, supplied components and a vehicle-specific installation quotation. Price and installation charges are not stated in this listing.
Specifications and images are based on Rainbow Audio’s official IL-S4.2 BMW product page.
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