Hornresp
.txt · Hornresp driver database
Driver file ready to place in Hornresp’s Drivers folder.
Download for HornrespB&C 21SW152 4Ω
LF DriverMedia
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Overview
LF Driver21SW series
B&C
B&C 21SW152
B&C 21SW152 is a 21" 4 ohm LF driver rated at 2000W RMS. The validated T/S data includes Fs 32Hz, Qts 0.30, Vas 200L, Xmax 15mm, sensitivity 95.3dB, plus 2520cm³ Vd and 103 EBP. bits tracks UK vendor pricing, price movement, datasheet links, simulator import data, and similar drivers, with a current best price of £585.00.
Size
21"
Impedance
4Ω
RMS Power
2000W
Sensitivity
95.3dB
EBP
103
Vented alignment
Vd
2520cm³
Frequency response
Manufacturer-provided response plots and related charts.
T/S Parameters
Valid
Fs32Hz
Qts0.30
Qes0.31
Qms7.0
Vas200.0L
Re3.3Ω
Le1.50mH
BL32.5Tm
Sd1680cm²
Mms460g
Xmax15.0mm
SPL95dB
Power2000W
Power Nominal2000W
Impedance4Ω
Min Impedance4.2Ω
F Low30Hz
F High1000Hz
Voice Coil153mm
Flux Density1.20T
Pricing & availability
Price definitionsPrice movement
Other offers
3 vendorsjpleisure
Updated 7 Aug 2026· 4Ω
Source: ex VAT · 20%
£587.03
inc VAT
In stock
jpleisure
Updated 11 Sept 2026· 4Ω
Source: ex VAT · 20%
£587.03
inc VAT
In stock
partsexpress
Updated 11 Sept 2026· 4Ω
Source: ex VAT
£726.97
inc VAT
5 in stock
Best current price
Updated 11 Sept 2026
bluearan
£585.00
Avg £621.51£36.51 below avg (-5.9%)
inc VAT·2 in stock
Use this driver
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.
Download for WinISDBASTA!
.bastaelement · BASTA! loudspeaker simulator
Native BASTA! element file using its documented SI-unit fields.
Download for BASTA!VituixCAD
.wdr · VituixCAD 2 Enclosure
A WinISD driver file that VituixCAD imports directly.
Download for VituixCAD00 Simulator
Direct import · Web app
Start a new enclosure simulation with this driver already loaded.
Open in 00 SimulatorCopy spec sheet
Plain text · Clipboard
Copy the available values as a clean label-and-value list.
Dimensions & Physical
Weight18.5kg
Diameter547.0mm
Overall Depth261.0mm
Cutout Diameter508.0mm
Bolt Circle Diameter527.0mm
Additional Manufacturer Specs
Bl32.5 Tm
Fs32 Hz
Le1.5 mH
Re3.3 Ω
Sd1680 cm² (260.4 in²)
Ebp103 Hz
Mms460 g
Qes0.31
Qms7
Qts0.3
Vas200 dm³ (7 ft³)
η02.2 %
ConeRCK21SW1524
Xmax15 mm
Xvar16 mm
SpiderDouble Silicone
Cone ShapeRadial
Pole DesignT-Pole
Winding Depth30 mm (1.18 in)
Surround ShapeTriple Roll
Former MaterialGlass Fibre
Magnet MaterialNeodymium Inside Slug
Nominal Diameter530 mm (21 in)
Winding MaterialCopper
Magnetic Gap Depth12 mm (0.5 in)
Recommended Tuning33 Hz
Bolt Circle Diameter527 mm (20.7 in)
Recommended Enclosure190 dm³ (6.71 ft³)
Woofer Cone TreatmentTWP Waterproof Both Sides
Baffle Cutout Diameter508 mm (20 in)
Flange And Gasket Thickness16 mm (0.63 in)
Air Volume Occupied By Driver16 dm³ (0.56 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
21SW152
21"
Best current price
£585.00
Compare on
Matches sit inside every range. Size stays fixed automatically.
5 active T/S params, plus size. Pin a driver to open a side-by-side comparison.
12 matches
Compare a specific driver
Added drivers stay at the front of the list, whatever the ranges say.
56%
Similarity
41% cheaper£343.60
SB Audience
NERO-21SW1100D
21"
Lower price
Xmax12.2mm-19%
Qts0.34+13%
BL30Tm-8%
Vas312.6L+56%
Qes0.35+13%
79%
Similarity
32% cheaper£399.00
Lavoce
SAN214.50
21"
Lower price
Xmax15.4mm+3%
Qts0.28-7%
BL39.6Tm+22%
Vas218.3L+9%
Qes0.29-6%
66%
Similarity
27% cheaper£425.00
Beyma
21QLEX1600FE
21"
Lower price
Xmax13mm-13%
Qts0.28-7%
BL36.4Tm+12%
Vas309L+55%
Qes0.3-3%
75%
Similarity
24% cheaper£445.00
Celestion
TSQ2145
21"
Lower price
Xmax15mm0%
Qts0.34+15%
BL33.8Tm+4%
Vas253.8L+27%
Qes0.36+16%
53%
Similarity
18% cheaper£481.99
B&C
21SW115
21"
Lower price
Xmax14mm-7%
Qts0.36+20%
BL24.8Tm-24%
Vas278L+39%
Qes0.37+19%
51%
Similarity
18% cheaper£481.99
B&C
21SW115
21"
Lower price
Xmax14mm-7%
Qts0.37+23%
BL30.1Tm-7%
Vas318L+59%
Qes0.39+26%
74%
Similarity
15% cheaper£497.00
B&C
21DS115
21"
Lower price
Xmax16.5mm+10%
Qts0.27-10%
BL39.3Tm+21%
Vas204L+2%
Qes0.28-10%
Image unavailable
66%
Similarity
3% cheaper£569.00
Precision Devices
PD.2155-1N
21"
Lower price
Xmax14mm-7%
Qts0.36+20%
BL30Tm-8%
Vas241L+21%
Qes0.37+21%
77%
Similarity
2% cheaper£576.21
Eighteen Sound
21NLW9001
21"
Lower price
Xmax14mm-7%
Qts0.31+3%
BL37Tm+14%
Vas244L+22%
Qes0.34+10%
68%
Similarity
£585.00
B&C
21SW152
21"
Xmax15mm0%
Qts0.36+20%
BL39Tm+20%
Vas200L0%
Qes0.38+23%
58%
Similarity
2% more£595.00
Eighteen Sound
21NTLW5000
21"
Higher price
Xmax17.5mm+17%
Qts0.36+20%
BL32Tm-2%
Vas270L+35%
Qes0.38+23%
85%
Similarity
20% more£699.33
Eighteen Sound
21NLW9601C
21"
Higher price
Xmax14mm-7%
Qts0.29-3%
BL33.2Tm+2%
Vas140L-30%
Qes0.310%