Hornresp
.txt · Hornresp driver database
Driver file ready to place in Hornresp’s Drivers folder.
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Overview
LF Driver21DS series
B&C
B&C 21DS115
B&C 21DS115 is a 21" 8 ohm LF driver rated at 1700W RMS. The validated T/S data includes Fs 34Hz, Qts 0.27, Vas 204L, Xmax 16.5mm, sensitivity 96.6dB, plus 2673cm³ Vd and 121 EBP. bits tracks UK vendor pricing, price movement, datasheet links, simulator import data, and similar drivers, with a current best price of £497.00.
Size
21"
Impedance
8Ω
RMS Power
1700W
Sensitivity
96.6dB
99.0dBmanufacturer; using T/S-derived value (2.4dB delta).
EBP
121
Vented alignment
Vd
2673cm³
Frequency response
Manufacturer-provided response plots and related charts.
T/S Parameters
Valid
Fs34Hz
Qts0.27
Qes0.28
Qms10.2
Vas204.0L
Re5.1Ω
Le4.90mH
BL39.3Tm
Sd1620cm²
Mms404g
Xmax16.5mm
SPL97dB
Power1700W
Power Nominal1700W
Impedance8Ω
Min Impedance6.6Ω
F Low35Hz
F High500Hz
Voice Coil116mm
Flux Density0.80T
Pricing & availability
Price definitionsPrice movement
Best current price
£497.00
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
Weight14.7kg
Diameter547.0mm
Overall Depth255.0mm
Cutout Diameter508.0mm
Bolt Circle Diameter527.0mm
Additional Manufacturer Specs
Bl39.3 Tm
Fs34 Hz
Le4.9 mH
Re5.1 Ω
Sd1620 cm² (251.1 in²)
Ebp121 Hz
Mms404 g
Qes0.28
Qms10.2
Qts0.27
Vas204 dm³ (7.2 ft³)
η02.7 %
ConeRCK21DS1158
Xmax16.5 mm
Xvar13.5 mm
SpiderDouble Silicone
Cone ShapeRadial
Pole DesignT-Pole
Winding Depth40 mm (1.57 in)
Surround ShapeTriple Roll
Former MaterialGlass Fibre
Magnet MaterialNeodymium Inside Slug
Nominal Diameter530 mm (21 in)
Winding MaterialAluminium
Magnetic Gap Depth14 mm (0.55 in)
Recommended Tuning40 Hz
Bolt Circle Diameter527 mm (20.7 in)
Recommended Enclosure170 dm³ (6 ft³)
Woofer Cone TreatmentTWP Waterproof Both Sides
Baffle Cutout Diameter508 mm (20 in)
Flange And Gasket Thickness13 mm (0.51 in)
Air Volume Occupied By Driver15 dm³ (0.53 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
21DS115
21"
Best current price
£497.00
Compare on
Matches sit inside every range. Size stays fixed automatically.
5 active T/S params, plus size.
12 matches
Compare a specific driver
Added drivers stay at the front of the list, whatever the ranges say.
65%
Similarity
14% cheaper£425.00
Beyma
21QLEX1600FE
21"
Lower price
Xmax13mm-21%
Qts0.28+4%
BL36.4Tm-7%
Vas309L+51%
Qes0.3+7%
76%
Similarity
10% cheaper£449.36
Dayton Audio
HTS545HE-4
21"
Lower price
Xmax21mm+27%
Qts0.28+4%
BL38.2Tm-3%
Vas179L-12%
Qes0.29+4%
57%
Similarity
£497.00
B&C
21DS115
21"
Xmax15mm-9%
Qts0.21-22%
BL28.6Tm-27%
Vas219L+7%
Qes0.22-21%
65%
Similarity
16% more£576.21
Eighteen Sound
21NLW9001
21"
Higher price
Xmax14mm-15%
Qts0.31+15%
BL37Tm-6%
Vas244L+20%
Qes0.34+21%
75%
Similarity
18% more£585.00
B&C
21SW152
21"
Higher price
Xmax15mm-9%
Qts0.3+11%
BL32.5Tm-17%
Vas200L-2%
Qes0.31+11%
74%
Similarity
41% more£699.33
Eighteen Sound
21NLW9601
21"
Higher price
Xmax14mm-15%
Qts0.29+7%
BL43Tm+9%
Vas175L-14%
Qes0.31+11%
66%
Similarity
41% more£699.33
Eighteen Sound
21NLW9601C
21"
Higher price
Xmax14mm-15%
Qts0.29+7%
BL33.2Tm-16%
Vas140L-31%
Qes0.31+11%
Image unavailable
78%
Similarity
56% more£777.00
Precision Devices
PD.2160-1N
21"
Higher price
Xmax16mm-3%
Qts0.3+11%
BL43Tm+9%
Vas177L-13%
Qes0.31+11%
71%
Similarity
81% more£899.00
FaitalPRO
21XL3000
21"
Higher price
Xmax17.7mm+7%
Qts0.25-7%
BL43Tm+9%
Vas284.6L+40%
Qes0.25-11%
Image unavailable
52%
Similarity
85% more£917.46
Eminence
NSW6021-124
21"
Higher price
Xmax21mm+27%
Qts0.32+19%
BL30.5Tm-22%
Vas224.6L+10%
Qes0.33+18%
79%
Similarity
Dayton Audio
PSS545HE-4
21"
Xmax21mm+27%
Qts0.270%
BL35.5Tm-10%
Vas212.2L+4%
Qes0.280%
78%
Similarity
Celestion
TSQ2160
21"
Xmax18.8mm+14%
Qts0.26-5%
BL43.1Tm+10%
Vas234.8L+15%
Qes0.26-6%