Alpine SPJ-691C3 Type-J 6x9-Inch 3-Way Coaxial Car Speaker
Alpine SPJ-691C3 Type-J 6x9-Inch 3-Way Coaxial Car Speaker
Experience the next level of in-car audio with the Alpine SPJ-691C3 — a high-performance 6x9-inch 3-way coaxial speaker from Alpine's acclaimed Type-J series. Designed for drivers who want rich, full-range sound without a complex multi-component setup, the SPJ-691C3 packs a woofer, midrange, and tweeter into one seamless unit for effortless installation and outstanding results.
Why Choose the Alpine SPJ-691C3?
Whether you're replacing lifeless factory speakers or building your first serious car audio system, the SPJ-691C3 delivers. With a wide frequency range of 30 Hz to 30 kHz, every note — from deep bass rumbles to crisp high-frequency detail — comes through with clarity and power. The 400W peak handling means it can keep up with even a dedicated amplifier, while the silk dome tweeter ensures vocals and highs remain smooth and fatigue-free on long drives.
Key Features
- Type-J 3-Way Coaxial Design — woofer, midrange, and tweeter in a single unit for full-range performance
- 400W Peak / 60W RMS Power Handling — built to pair with aftermarket head units and amplifiers
- Wide Frequency Response: 30 Hz – 30 kHz — reproduces the complete audio spectrum
- Silk Dome Tweeter with Neodymium Magnet — smooth, detailed highs without harshness
- PEI Cone Woofer with Ferrite Magnet — punchy, accurate bass with excellent rigidity
- Rubber Roll Surround — long-lasting flexibility and improved low-frequency extension
- Surface Mount Design — easy fitment in most standard 6x9-inch speaker locations
- Made in Japan — Alpine's legacy of precision engineering
Specifications
| Speaker Type | 6x9" (16x24 cm) Coaxial 3-Way Speaker |
| Frequency Response | 30 Hz – 30 kHz |
| Peak Power | 400 Watts |
| RMS Power | 60 Watts |
| Design | Surface Mount, Rubber Roll Surround |
| Tweeter Material | Silk Dome |
| Tweeter Magnet | Neodymium |
| Woofer Magnet | Ferrite |
| Cone Material | PEI (Polyetherimide) |
| Woofer Mounting Diameter | 146 x 217.4 mm |
| Woofer Mounting Depth | 75 mm |
| Origin | Japan |
Ideal For
- Upgrading rear deck or door speakers to 6x9-inch slots
- Drivers wanting 3-way sound without a component speaker setup
- Anyone building a powerful, clean-sounding car audio system on a budget
More ways. More sound. More Alpine.
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Product Information
Shipping & Returns
Shipping & Returns

Alpine SPJ-691C3 Type-J 6x9-Inch 3-Way Coaxial Car Speaker
Alpine SPJ-691C3 Type-J 6x9-Inch 3-Way Coaxial Car Speaker
Alpine SPJ-691C3 Type-J 6x9-Inch 3-Way Coaxial Car Speaker
Experience the next level of in-car audio with the Alpine SPJ-691C3 — a high-performance 6x9-inch 3-way coaxial speaker from Alpine's acclaimed Type-J series. Designed for drivers who want rich, full-range sound without a complex multi-component setup, the SPJ-691C3 packs a woofer, midrange, and tweeter into one seamless unit for effortless installation and outstanding results.
Why Choose the Alpine SPJ-691C3?
Whether you're replacing lifeless factory speakers or building your first serious car audio system, the SPJ-691C3 delivers. With a wide frequency range of 30 Hz to 30 kHz, every note — from deep bass rumbles to crisp high-frequency detail — comes through with clarity and power. The 400W peak handling means it can keep up with even a dedicated amplifier, while the silk dome tweeter ensures vocals and highs remain smooth and fatigue-free on long drives.
Key Features
- Type-J 3-Way Coaxial Design — woofer, midrange, and tweeter in a single unit for full-range performance
- 400W Peak / 60W RMS Power Handling — built to pair with aftermarket head units and amplifiers
- Wide Frequency Response: 30 Hz – 30 kHz — reproduces the complete audio spectrum
- Silk Dome Tweeter with Neodymium Magnet — smooth, detailed highs without harshness
- PEI Cone Woofer with Ferrite Magnet — punchy, accurate bass with excellent rigidity
- Rubber Roll Surround — long-lasting flexibility and improved low-frequency extension
- Surface Mount Design — easy fitment in most standard 6x9-inch speaker locations
- Made in Japan — Alpine's legacy of precision engineering
Specifications
| Speaker Type | 6x9" (16x24 cm) Coaxial 3-Way Speaker |
| Frequency Response | 30 Hz – 30 kHz |
| Peak Power | 400 Watts |
| RMS Power | 60 Watts |
| Design | Surface Mount, Rubber Roll Surround |
| Tweeter Material | Silk Dome |
| Tweeter Magnet | Neodymium |
| Woofer Magnet | Ferrite |
| Cone Material | PEI (Polyetherimide) |
| Woofer Mounting Diameter | 146 x 217.4 mm |
| Woofer Mounting Depth | 75 mm |
| Origin | Japan |
Ideal For
- Upgrading rear deck or door speakers to 6x9-inch slots
- Drivers wanting 3-way sound without a component speaker setup
- Anyone building a powerful, clean-sounding car audio system on a budget
More ways. More sound. More Alpine.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Alpine SPJ-691C3 Type-J 6x9-Inch 3-Way Coaxial Car Speaker
Experience the next level of in-car audio with the Alpine SPJ-691C3 — a high-performance 6x9-inch 3-way coaxial speaker from Alpine's acclaimed Type-J series. Designed for drivers who want rich, full-range sound without a complex multi-component setup, the SPJ-691C3 packs a woofer, midrange, and tweeter into one seamless unit for effortless installation and outstanding results.
Why Choose the Alpine SPJ-691C3?
Whether you're replacing lifeless factory speakers or building your first serious car audio system, the SPJ-691C3 delivers. With a wide frequency range of 30 Hz to 30 kHz, every note — from deep bass rumbles to crisp high-frequency detail — comes through with clarity and power. The 400W peak handling means it can keep up with even a dedicated amplifier, while the silk dome tweeter ensures vocals and highs remain smooth and fatigue-free on long drives.
Key Features
- Type-J 3-Way Coaxial Design — woofer, midrange, and tweeter in a single unit for full-range performance
- 400W Peak / 60W RMS Power Handling — built to pair with aftermarket head units and amplifiers
- Wide Frequency Response: 30 Hz – 30 kHz — reproduces the complete audio spectrum
- Silk Dome Tweeter with Neodymium Magnet — smooth, detailed highs without harshness
- PEI Cone Woofer with Ferrite Magnet — punchy, accurate bass with excellent rigidity
- Rubber Roll Surround — long-lasting flexibility and improved low-frequency extension
- Surface Mount Design — easy fitment in most standard 6x9-inch speaker locations
- Made in Japan — Alpine's legacy of precision engineering
Specifications
| Speaker Type | 6x9" (16x24 cm) Coaxial 3-Way Speaker |
| Frequency Response | 30 Hz – 30 kHz |
| Peak Power | 400 Watts |
| RMS Power | 60 Watts |
| Design | Surface Mount, Rubber Roll Surround |
| Tweeter Material | Silk Dome |
| Tweeter Magnet | Neodymium |
| Woofer Magnet | Ferrite |
| Cone Material | PEI (Polyetherimide) |
| Woofer Mounting Diameter | 146 x 217.4 mm |
| Woofer Mounting Depth | 75 mm |
| Origin | Japan |
Ideal For
- Upgrading rear deck or door speakers to 6x9-inch slots
- Drivers wanting 3-way sound without a component speaker setup
- Anyone building a powerful, clean-sounding car audio system on a budget
More ways. More sound. More Alpine.














