PRV AUDIO 3" Full-Range Neodymium Speaker 3MR40-NDY-4

PRV AUDIO 3MR40-NDY-4 is a compact 3-inch full-range neodymium driver that delivers high-fidelity sound and 40 watts continuous power in a lightweight, low-profile package.

Small but capable, this 3" full-range speaker is built for projects where space and weight matter: portable loudspeakers, compact line arrays, and car audio installations. It combines a strong neodymium magnet system, a 0.75" CCAW voice coil, and a balanced frequency range that extends from the upper bass into the highest treble. With 91 dB sensitivity and a 4 ohm nominal impedance, the 3MR40-NDY-4 produces notable output with modest amplifier power.

How loud and efficient is this 3-inch driver?

The 3MR40-NDY-4 is engineered for high acoustic output relative to its size. With 91 dB sensitivity measured at 2.00 V/1 m and a continuous program power rating of 40 watts, it can achieve substantial sound pressure with compact amplifiers.

• 91 dB sensitivity for strong sound per watt
• 40 W continuous program power (80 W peak capability)
• 4 ohm nominal impedance for versatile amplifier matching
• Recommended high-pass at 160 Hz for full-power use

What frequency range and tonal role does it cover?

This driver offers a broad and well-balanced response from 120 Hz up to 20 kHz, making it useful as a midrange, midbass, or full-range unit depending on system design. It reproduces vocals and mid/high detail clearly while supporting light bass duties when paired appropriately.

• Frequency response: 120–20,000 Hz
• Suitable as midrange in multiway systems or full-range in compact enclosures
• Recommended crossover: 160 Hz, 12 dB/oct for full-power handling
• Produces clear highs and defined mids for vocal-centric mixes

How does the neodymium motor and build help in tight installs?

The driver’s neodymium motor concentrates magnetic flux in a compact form, increasing efficiency while keeping weight low. A stamped steel frame and a shallow mounting depth let the speaker fit into confined spaces without sacrificing structural reliability.

• Strong neodymium magnet for high efficiency in small size
• 0.75" (19 mm) CCAW voice coil for reliable thermal performance
• Low profile: 1.59" mounting depth and 1.83" overall depth
• Front mount baffle cutout of 2.79" (71 mm) for simple installation

What specific specs should system designers note?

Designers will appreciate the precise mechanical and electrical dimensions when planning enclosures or crossovers. The driver is light, compact, and engineered for predictable integration into small cabinets or vehicle panels.

• Overall diameter 3.69" (93.7 mm); cutout 2.79" (71 mm)
• Voice coil winding depth 4.8 mm; magnetic gap depth 4 mm
• Net weight 0.51 lb (0.23 kg); shipping weight 0.55 lb (0.25 kg)
• Nominal impedance 4 Ω and peak power rating up to 80 W

Who is this for? The PRV AUDIO 3MR40-NDY-4 suits audio builders, DIY speaker makers, pro installers, and car audio enthusiasts who need a compact, high-efficiency mid/high driver that performs beyond its size. It’s ideal where enclosure depth is limited but high output, broad frequency coverage, and lightweight components are required. Use it as a midrange in multiway speaker designs, a compact full-range driver in portable systems, or as a clear, articulate mid/high in vehicle audio projects.