B2 Audio Pair of REF SQ 3" Midrange 50 Watt RMS 4-Ohm Speakers

Reference-Grade 3" Mid: Compact 3" midrange built for reference-level sound quality, ideal for high-end 2-way or 3-way front stages and SQ-focused builds. Carbon Fiber Cone & Neodymium Motor: Multi-layered hexagonal carbon fiber cone and dust cap paired with a neodymium motor deliver low distortion, fast transients, and excellent detail. Engineered for Low Compression & Noise: Features a non-conductive TIL voice coil former, FEA-optimized motor with copper shorting ring, vented aluminum basket, and vented pole piece with foam for reduced compression and mechanical noise. Real Power Handling in a Tiny Package: Rated at 50 watts RMS and 100 watts long-term max power (IEC test based), with 88 dB sensitivity and 200–20,000 Hz free-air response for wideband coverage. Install-Friendly 3" Form Factor: Compact dimensions with a 3.62" overall diameter, 3.02" cutout, and only 1.52" mounting depth make it perfect for tight locations, A-pillars, dash pods, or custom builds. B2 Audio Pair of REF SQ 3" Midrange 50 Watt RMS 4-Ohm Speakers This Listing Includes (2) 3" Midrange Speakers B2-REFSQ3 (1) Mounting hardware Specifications: Electrical Data: Nominal Impedance (Zn): 4 Ohms DC Resistance (Re): 3.35 Ohms Maximum Impedance (Zo): 52.653 Ohms Minimum Impedance (Zmin): 3.974 Ohms Minimum Frequency (Fmin): 752.841 Hz Voice Coil Inductance @ 1 kHz (Le): 0.151 mH T-S Parameters: Resonance Frequency (Fs): 131.816 Hz Mechanical Q Factor (Qms): 5.575 Electrical Q Factor (Qes): 0.379 Total Q Factor (Qts): 0.355 Force Factor (BL): 5.392 Tm Mechanical Resistance (Rms): 0.590 Ns/m Moving Mass without Air Load (Mmd): 3.874 g Moving Mass with Air Load (Mms): 3.970 g Suspension Compliance (Cms): 0.367 mm/N Effective Piston Area (Sd): 30.190 cm Equivalent Volume (Vas): 0.475 L Reference Efficiency (No): 0.278 % Frequency Response (–3 dB, free air): 200 - 20,000 Hz Sensitivity @ 1W/1M (3 dB): 88 dB Mechanical Dat