Alpine SPJ-691C3 Type-J 6×9″ 3-Way Coaxial Car Speakers | 400W Peak Power

Upgrade your factory sound system with the Alpine SPJ-691C3 Type-J 6×9″ 3-Way Coaxial Speakers, engineered to deliver powerful bass, clear vocals, and crisp highs in a single, easy-to-install package. Designed as part of Alpine’s entry-level performance series, these speakers are perfect for users looking for a balanced and high-quality audio upgrade without complex installations.

With a 3-way coaxial design, the SPJ-691C3 integrates a woofer, midrange, and tweeter, ensuring a full-range sound experience with better clarity and depth compared to standard OEM speakers.

🔊 Key Features

✔ 6×9″ 3-Way Coaxial Design – Woofer + midrange + tweeter for full-range sound output

✔ 400W Peak Power / ~60W RMS – Strong and distortion-free performance for daily listening

✔ Wide Frequency Response (30Hz – 30kHz) – Deep bass with extended high-frequency detail

✔ Silk Dome Tweeter with Neodymium Magnet – Smooth, natural highs without harshness

✔ High Efficiency Design – Delivers loud and clear sound even with stock head units

✔ Enhanced Bass & Treble Response – Improved sound quality over factory speakers

✔ Durable PEI Cone & Rubber Surround – Long-lasting performance with better cone control

✔ Shallow Mounting Depth (~75mm) – Easy installation in most vehicles without spacers

🔧 Technical Specifications

• Speaker Type: 3-Way Coaxial
• Size: 6×9 Inch (16×24 cm)
• RMS Power: ~60 Watts
• Peak Power: 400 Watts
• Frequency Response: 30Hz – 30kHz
• Impedance: 4 Ohms
• Sensitivity: ~92 dB
• Tweeter: Silk Dome (Neodymium Magnet)
• Woofer Material: PEI Cone with Rubber Surround
• Mounting Depth: ~75 mm

📦 Package Includes

• 2 × Alpine SPJ-691C3 Speakers
• 2 × Speaker Grilles
• Mounting Accessories
• User Manual

🚗 Why Choose Alpine SPJ-691C3

• Ideal upgrade from factory 6×9 speakers
• Full-range sound with strong bass & clear vocals
• Easy installation with OEM compatibility
• Works with stock stereo or amplifier setups
• Trusted Alpine sound quality & durability

🛠 Installation Notes

• Best suited for rear parcel tray or door installation
• Can run on stock stereo but performs better with amplifier
• Professional installation recommended for optimal sound tuning