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B&C 4NDF34-8 4" Professional Neodymium Woofer 8 Ohm

B&C SpeakersPart # 294-5938
Model: 4NDF34-8
The potent 4NDF34 4" driver from B&C Speakers used an extremely powerful neodymium motor to produce high efficiency and excellent output capability for its size. With natural response up to 8,000 Hz and remarkable power handling this driver is a great choice for use as a woofer in compact 2-way systems or as a midrange in high output 3-way designs such as line arrays.

Key Features

  • Light but powerful neodymium motor keeps size and weight to a minimum
  • 92 dB efficient with 100 watt RMS power handling for excellent output capability
  • 3.8 mm xmax allows significant displacement from a 4" driver
  • 1.34" copper voice coil on a fiberglass former for high power handling
  • Waterproof treated paper cone is suitable for use in harsh conditions
Your Price: $68.16
MSRP: $113.60
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Estimated back in stock 7/31/2025
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Overview

B&C 4NDF34-8 4" Professional Neodymium Woofer 8 Ohm

B&C's compact 4NDF34 4" driver combined high efficiency and incredible power handling to deliver surprising output capability for its size. Designed for use as a midrange in high output speaker systems, this driver actually has enough displacement capability to also be used in compact subwoofer assisted 2-way designs. The powerful neodymium motor keeps the efficiency high while minimizing size and weight. To handle and impressive 100 watts RMS, the 1.34" copper voice coil is wound on a heat resistant fiberglass former. For use in damp and wet locations the non-resonant paper cone has a waterproof coating on both sides. The flexible 4NDF34 is a unique driver that would suitable for anything from portable Bluetooth speakers to compact 3-way stackable line arrays.

Product Details

BrandB&C Speakers
Model4NDF34-8
Part Number294-5938
UPC848864063362
Unit of MeasureEach
Weight1.25

Product Specifications

Nominal Diameter4"
Bolt Circle Diameter4.53
Power Handling (RMS)200 Watts
Impedance
Frequency Response110 to 8,000Hz
Sensitivity92dB 2.83V/1m
Voice Coil Diameter1.34"

Thiele-Small Parameters

Resonant Frequency (Fs)110Hz
DC Resistance (Re)5.5Ω
Voice Coil Inductance (Le)0.23mH
Mechanical Q (Qms)4.2
Electromagnetic Q (Qes)0.28
Total Q (Qts)0.27
Compliance Equivalent Volume (Vas)0.06ft³
BL Product (BL)9T·m
Diaphragm Mass Inc. Airload (Mms)6.1g
Maximum Linear Excursion (Xmax)3.8mm
Surface Area of Cone (Sd)57cm²

Materials of Construction

Cone MaterialTreated Paper
Surround MaterialCloth
Voice Coil Wire MaterialCopper
Voice Coil FormerFiberglass
Basket / Frame MaterialCast Aluminum
Magnet MaterialNeodymium

Mounting Information

Overall Outside Diameter5"
Baffle Cutout Diameter4.06"
Depth2.6"
# Mounting Holes4

Parts Express Staff Recommended Enclosure Volume

Sealed Volume0.06ft³
Sealed F3377.3Hz
Vented Volume0.06ft³
Vented F3116.2Hz

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