Description
Alpine BRV‑S40
The Alpine BRV‑S40 is a 4″ 2-way coaxial speaker designed for compact in-car audio systems. It delivers clear highs and punchy bass from a single integrated unit. The HEDGE™ Surround allows extended cone excursion, producing improved low-end performance and natural midrange. This speaker ensures clean separation of instruments and crisp vocals, making small car setups sound dynamic and full.
Specifications
Features
| Feature | Details |
|---|---|
| Speaker Set | 4″ woofer w/coaxial 1″ tweeter |
| OPTIM8® Sync | Designed to pair actively with Alpine OPTIM8® for maximum output |
| Bass Performance | Upgraded mid and low-end when tuned with OPTIM8® |
| Surround | HEDGE™ Surround (High Excursion Design Gathered Edge) |
| Cone Design | Unique lapel cone shape for higher excursion vs. traditional cones |
| Cone Material | Polypropylene + mica for increased rigidity and cleaner response |
| Magnet | Ferrite magnet motor for stable performance |
| Finish | Gun-metal chemical coating for premium, durable finish |
| OEM Fitment | Shallow profile for tight doors and dash locations |
Tech Specs
| Specification | Details |
|---|---|
| Woofer Size | 4″ |
| Tweeter Size | 1″ (Coaxial) |
| Power Handling | 40W RMS / 120W Peak |
| Frequency Response (BassRev Tuning ON) | 67Hz – 20kHz |
| Frequency Response (BassRev Tuning OFF) | 75Hz – 20kHz |
| Sensitivity | 84dB (1W/1m) |
| Impedance | 4Ω |
| Mounting Depth | 1-3/4″ (woofer) |
| Cone Material | Polypropylene (woofer), Polyester cloth-dome (tweeter) |
| Surround Material | Rubber HEDGE™ Design (woofer) |
| Voice Coil Diameter | 25mm (woofer), 20mm (tweeter) |
| Magnet Size | 75mm (woofer) |
| Magnet Material | Ferrite (woofer), Neodymium (tweeter) |
| Frame Material | Steel (woofer) |
About The Product
Big-Speaker Energy
Alpine’s HEDGE™ surround on BassRev™ speakers acts like performance suspension for your woofer. On the BRV-S40, this unique surround lets the 4″ cone move farther with control, so more power becomes real, cabin-filling impact—not wasted motion. That extra, linear movement translates to stronger low-end presence and fuller mids, giving the BRV-S40 the impact you expect from a larger 6.5″ driver while preserving smooth mids and clear vocals. The result is big-speaker feel from a compact 4″ coaxial.
Max Impact with OPTIM™
The BRV-S40 is impressive on its own, but the real magic happens when you pair it with Alpine’s OPTIM8® DSP/Amplifier using OPTIM™ Sync, our BassRev-specific tuning. OPTIM™ Sync intelligently applies dynamic bass boost and pre-EQ tailored to these drivers, safely extending low-end performance and smoothing tone to unlock their full potential. The result is bigger-than-size sound—a 4″ set that plays with near-6.5″ presence a speaker alone just can’t match.
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