Hornresp
.txt · Hornresp driver database
Driver file ready to place in Hornresp’s Drivers folder.
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Overview
LF Driver4NDF series
B&C
B&C 4NDF34
B&C 4NDF34 is a 4" 8 ohm LF driver rated at 100W RMS. The validated T/S data includes Fs 110Hz, Qts 0.27, Vas 1.6L, Xmax 3.8mm, sensitivity 90.8dB, plus 22cm³ Vd and 393 EBP. bits tracks UK vendor pricing, price movement, datasheet links, simulator import data, and similar drivers, with a current best price of £49.44.
Size
4"
Impedance
8Ω
RMS Power
100W
Sensitivity
90.8dB
92.0dBmanufacturer; using T/S-derived value (1.2dB delta).
EBP
393
Vented alignment
Vd
22cm³
Frequency response
Manufacturer-provided response plots and related charts.
T/S Parameters
Valid
Fs110Hz
Qts0.27
Qes0.28
Qms4.2
Vas1.6L
Re5.5Ω
Le0.23mH
BL9.0Tm
Sd57cm²
Mms6g
Xmax3.8mm
SPL91dB
Power100W
Power Nominal100W
Impedance8Ω
Min Impedance6.4Ω
F Low110Hz
F High8000Hz
Voice Coil34mm
Flux Density1.25T
Pricing & availability
Price definitionsPrice movement
Best current price
£49.44
inc VAT·Vendor hidden
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Open it in 00 Simulator, download it for your enclosure tool, or copy the specification values.
Files use canonical values. Required mechanical fields are derived only where the target format needs them.
WinISD
.wdr · WinISD driver editor
Native WinISD driver record with the required SI conversions.
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.bastaelement · BASTA! loudspeaker simulator
Native BASTA! element file using its documented SI-unit fields.
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.wdr · VituixCAD 2 Enclosure
A WinISD driver file that VituixCAD imports directly.
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Dimensions & Physical
Weight0.6kg
Diameter127.0mm
Overall Depth66.0mm
Cutout Diameter103.0mm
Bolt Circle Diameter115.0mm
Additional Manufacturer Specs
Bl9 Tm
Fs110 Hz
Le0.23 mH
Re5.5 Ω
Sd57 cm² (8.84 in²)
Ebp393 Hz
Mms6.1 g
Qes0.28
Qms4.2
Qts0.27
Vas1.6 dm³ (0.06 ft³)
η00.7 %
ConeRCK04NDF34
Xmax3.8 mm
Xvar5.7 mm
SpiderSingle
Cone ShapeExponential
Pole DesignT-Pole
Winding Depth11 mm (0.43 in)
Surround ShapeDouble Roll
Former MaterialGlass Fibre
Magnet MaterialNeodymium Inside Slug
Nominal Diameter100 mm (4 in)
Winding MaterialCopper
Magnetic Gap Depth7 mm (0.28 in)
Bolt Circle Diameter115 mm (4.53 in)
Woofer Cone TreatmentTWP Waterproof Both Sides
Baffle Cutout Diameter103 mm (4.06 in)
Flange And Gasket Thickness3 mm (0.12 in)
Air Volume Occupied By Driver0.25 dm³ (0.01 ft³)
Similar Drivers
Size stays fixed. Tune the T/S ranges to change what counts as a match, or add a specific driver to compare it directly.
Reference
B&C
4NDF34
4"
Best current price
£49.44
Compare on
Matches sit inside every range. Size stays fixed automatically.
5 active T/S params, plus size.
3 matches
Compare a specific driver
Added drivers stay at the front of the list, whatever the ranges say.
77%
Similarity
24% cheaper£37.33
Lavoce
WSN041.00
4"
Lower price
Xmax4mm+5%
Qts0.3+11%
BL8.3Tm-8%
Vas1.8L+12%
Qes0.32+14%
43%
Similarity
69% more£83.38
B&C
5MDN38
5"
Higher price
Xmax3.5mm-8%
Qts0.31+15%
BL11.1Tm+23%
Vas1.4L-13%
Qes0.36+29%
57%
Similarity
Accuton
BD90-6-727
5"
Xmax3mm-21%
Qts0.28+4%
BL10.7Tm+19%
Vas1.6L0%
Qes0.3+7%