B&C 8MDN51 8" Neodymium Woofer
B&C's 8MDN51 8" woofer is an efficient and lightweight cast frame neodymium professional driver. Its ventilated voice coil gap ensures long term power handling and reduced power compression. Although the 8MDN51 will provide great results when loaded into direct radiating designs, it is also ideally suited for horn-loaded speaker systems.
Highly recommended for compact 2-way speaker systems, the B&C Speakers 8MDN51 8" driver also performs well as the midbass / midrange element in high-output 3-way and 4-way designs, including line arrays.
Key Features
Great for line arrays and horn loading
Neodymium ring magnet assembly
Ventilated voice coil gap for reduced power compression
2" aluminum voice coil on polyimide former
400 watts continuous program power capacity
70 – 4,000 Hz response
97 dB 1W/1m sensitivity
Product Specifications
Nominal Diameter 8"
Bolt Circle Diameter 8.3
Moving Mass Of Diaphragm (Mmd) 23
Power Handling (RMS) 200 Watts
Power Handling (MAX) 400 Watts
Impedance 8Ω
Frequency Response 70 to 4,000Hz
Sensitivity 97dB 2.83V/1m
Voice Coil Diameter 2"
Thiele-Small Parameters
Resonant Frequency (Fs) 70Hz
DC Resistance (Re) 5.1Ω
Voice Coil Inductance (Le) 0.8mH
Mechanical Q (Qms) 3.7
Electromagnetic Q (Qes) 0.21
Total Q (Qts) 0.2
Compliance Equivalent Volume (Vas) 0.6ft³
BL Product (BL) 15.3T·m
Maximum Linear Excursion (Xmax) 6mm
Surface Area of Cone (Sd) 220cm²
Materials of Construction
Cone Material Paper
Surround Material Foam
Voice Coil Wire Material Aluminum
Voice Coil Former Kapton® / Polyimide
Basket / Frame Material Cast Aluminum
Magnet Material Neodymium
Mounting Information
Overall Outside Diameter 8.8"
Baffle Cutout Diameter 7.4"
Depth 3.74"
# Mounting Holes 8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
Sealed Volume 0.03ft³
Sealed F 3299Hz
Vented Volume 0.07ft³
Vented F 3199Hz