
Product Overview
4" 2-Way Coaxial Car Speaker with Piezo Tweeter is a compact Coaxial Car Speaker designed for vehicle audio systems, combining a PP cone with a Piezo Tweeter for two-way sound reproduction in space-limited installations.
Core Features
1. Two-Way Coaxial Design
This 2 Way Coaxial Speaker combines a PP main cone with a dedicated Piezo Tweeter, providing separate reproduction of low/mid and high-frequency content within a compact speaker structure.
2. Compact 4" Format
The 4" Coaxial Speaker is suited to vehicle locations where installation space is limited while maintaining a 20W nominal power rating and 30W maximum power handling.
3. PP Cone with SBR Surround
The PP cone provides the main sound-producing structure, while the SBR surround supports controlled cone movement for automotive audio applications.
4. 4-Ohm Configuration
With a nominal impedance of 4 Ohms and a 3.0 Ohm DC resistance, this Coaxial Car Speaker is designed for integration with compatible vehicle audio amplifiers and systems.
5. Piezo Tweeter for High-Frequency Reproduction
The integrated Piezo Tweeter extends high-frequency reproduction without requiring a separate external tweeter, making the 2 Way Coaxial Speaker suitable for compact vehicle audio configurations.
Application Scenarios
Automotive Door Audio – Suitable for compact door speaker installations in passenger vehicles.
Dashboard and Interior Audio – The compact 4" Coaxial Speaker can be integrated into limited installation spaces.
OEM Vehicle Audio Systems – Suitable for vehicle manufacturers and component suppliers requiring compact 4-ohm speaker solutions.
Aftermarket Car Audio – Designed for replacement and upgrade applications where a 2 Way Coaxial Speaker is required.
Automotive Speaker Assemblies – Suitable for distributors and system integrators sourcing standardized Coaxial Car Speakers for vehicle audio projects.
OEM / ODM Services
As a speaker manufacturer with in-house production capabilities, we support OEM and ODM projects for buyers who need customized Coaxial Car Speaker solutions.
Custom speaker specifications and performance targets
Cone and surround material selection
Tweeter configuration customization
Custom impedance and power requirements
Product appearance and labeling
Private-label packaging
OEM product development based on customer requirements
Prototype and sample development for new projects
Services We Provide
For Automotive OEMs
We provide customized 2 Way Coaxial Speaker solutions based on vehicle installation space, electrical requirements, acoustic targets, and production requirements.
For Car Audio Brands
We support private-label 4" Coaxial Speaker programs with customized specifications, branding, packaging, and production quantities.
For Automotive Parts Distributors
We provide standardized product specifications, samples, bulk production, and packaging support for distributors building their own Coaxial Car Speaker ranges.
For Aftermarket Audio Suppliers
We can develop compact coaxial speaker models for replacement and upgrade markets, with configurable power, impedance, materials, and appearance.
For Audio System Integrators
We provide technical specifications and OEM/ODM support to help buyers match the 2 Way Coaxial Speaker with amplifiers and vehicle audio systems.
FAQ
1. What is the typical application for the 4" 2-Way Coaxial Car Speaker with Piezo Tweeter?
The 4" 2-Way Coaxial Car Speaker with Piezo Tweeter is designed for compact automotive audio applications, including vehicle doors, dashboards, interior panels, OEM systems, and aftermarket replacement applications.
2. What is the MOQ for OEM or private-label orders?
MOQ can be discussed according to the product configuration, customization requirements, packaging, and order volume. We can also support sample orders for project evaluation.
3. Can you customize the Coaxial Car Speaker for our brand?
Yes. OEM and ODM services can include product specifications, appearance, labeling, packaging, and other requirements based on your project.
4. What packaging options are available for bulk orders?
We can provide standard export packaging as well as customized packaging, labels, cartons, and private-label solutions according to your requirements.
| Parameter | Value |
| Nominal Power | 20 W |
| Maximum Power | 30 W |
| Sensitivity | 82.5 dB |
| Cone Material | PP |
| Surround Material | SBR |
| Nominal Impedance | 4 Ohms |
| DC Resistance | 3.0 Ohms |
| Voice Coil Diameter | 20.4 mm |
| Voice Coil Layers | 2 |
| Voice Coil Wire | Copper |
| Magnet Weight | 5 OZ |
| Tweeter Type | Piezo Tweeter |
| Parameter | Value |
| Fs | 137.2 Hz |
| Vas | 1.2 L |
| Qts | 1.6 |
| Qes | 2.6 |
| Qms | 4.125 |
| Re | 3 Ohm |
| Sd | 53.46 cm² |
| Kms | 3.476 N/mm |
| Mms | 4.677 g |
| BL | 2.158 N/A |
| SPL | 82.58 dB |
MECHANICAL DRAWING
IMP/SPL
Founded in 2025, Ruisound operates a 4,000㎡ manufacturing base in Jiashan, Zhejiang. The company focuses on the research, development, production and sales of electroacoustic products, with product lines covering car speakers, midrange loudspeakers, subwoofers, marine speakers, professional loudspeakers and amplifiers.
Ruisound is built to serve global audio brands, distributors and OEM project customers who need reliable speaker products, flexible customization and stable manufacturing support.