HiVi M4N-B 4-Inch Aluminum / Magnesium Midrange Driver — Includes Install Kit

HiVi M4N-B 4-Inch Midrange — With Installation Kit. The HiVi M4N-B expands on the proven architecture of the M-series, but with an all-black appearance. The matte black anodized aluminum-magnesium cone fills a cosmetic gap for builders who like the acoustic profile of the M4N but prefer the non-reflective black look on their front baffle. In a small sealed chamber, it delivers a smooth, controlled rolloff in the critical vocal range without the peaky port behavior common to high-Q woofers. Electrically and mechanically, the M4N-B is designed with a resonant frequency near 70 Hz and a high total Q for sealed and isolated-chamber alignments. In a modest sealed enclosure or dedicated 3-way midrange chamber, it delivers a smooth, gradual roll-off on the low end without any boomy exaggerated bass. This allows for simple crossover design between 150 Hz and 5,000 Hz.The cone is paired with a durable rubber surround and a damped spider to control edge resonances. It has a rigid stamped steel frame and a fully shielded ferrite magnet system, eliminating stray magnetic fields in tight AV or desktop setups. To save you a trip to the hardware store, we include a custom-matched Installation Kit at no extra charge so you can start building immediately. Each M4N-B woofer you buy comes with a pre-cut gasket, two quick connect terminals, and mounting screws for free. Highlights Rigid Metal Alloy Diaphragm: Matte black aluminum-magnesium cone provides excellent response through the midrange with an all black appearance. Optimized for Sealed & Midrange Use: High Qts (1.08) and 69 Hz Fs excells in small sealed enclosures or dedicated 3-way midrange enclosures. Fully Shielded Motor Assembly: Ferrite magnet prevents magnetic leakage, making it safe for nearfield workstation setups and home theater center channels. Complete Installation Kit Included: Ships with the exact matching mounting screws and quick-connect wire terminals needed to start your build immediately. HiVi M4N-B Specifications Specification Value Brand HiVi Model M4N-B Nominal Diameter 4 Inches Cone Material Aluminum Impedance 8 Ohm Power Handling (RMS) 15 watts Power Handling (MAX) 30 watts Sensitivity 82dB (2.83v/1m) Frequency Response 69 - 8000 Hz Outside Diameter 116.5mm (4.56 inches) Cutout Diameter 95mm (3.75 inches) Mounting Depth 63mm (2.5 inches) Weight 1.3 pounds Thiele-Small Parameters Parameter Value Resonant Frequency (Fs) 69 Hz DC Resistance (Re) 6.5 Ω Compliance Eq. Volume (Vas) 0.15ft³ Mechanical Q (Qms) 5.39 Electrical Q (Qes) 1.35 Total Q (Qts) 1.08 BL Product (BL) 3.1 T·m Maximum Linear Excursion (Xmax) 3 mm Effective Cone Area (Sd) 53 cm²