Hornresp
.txt · Hornresp driver database
Driver file ready to place in Hornresp’s Drivers folder.
Download for HornrespEighteen Sound 21NTLW5000 8Ω
LF DriverMedia
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Overview
LF Driver
Eighteen Sound
Eighteen Sound 21NTLW5000
Eighteen Sound 21NTLW5000 is a 21" 8 ohm LF driver rated at 1800W RMS. The validated T/S data includes Fs 31Hz, Qts 0.36, Vas 270L, Xmax 17.5mm, sensitivity 95.3dB, plus 2909cm³ Vd and 82 EBP. bits tracks UK vendor pricing, price movement, datasheet links, simulator import data, and similar drivers, with a current best price of £595.00.
Size
21"
Impedance
8Ω
RMS Power
1800W
Sensitivity
95.3dB
97.0dBmanufacturer; using T/S-derived value (1.7dB delta).
EBP
82
Either alignment
Vd
2909cm³
Datasheet traces
Frequency and impedance curves traced from the manufacturer PDF.
frequency response240 ptsp2medium
Curve provenanceInspect 2 tracesHide details
These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works
- Trace datasheet-response-trace-poc/v1
frequency response
Frequency response
240 plotted pointsMedium confidence6,876 selected pixels of 10,690 - Trace datasheet-response-trace-poc/v1
impedance
Impedance response
230 plotted pointsMedium confidence1,210 selected pixels of 1,464
T/S Parameters
Valid
Fs31Hz
Qts0.36
Qes0.38
Qms5.2
Vas270.0L
Re5.3Ω
Le1.60mH
BL32.0Tm
Sd1662cm²
Mms372g
Xmax17.5mm
SPL95dB
Power1800W
Power Nominal1800W
Impedance8Ω
F Low30Hz
F High1800Hz
Pricing & availability
Price definitionsPrice movement
Other offers
1 vendorleanaudio
Updated 11 Sept 2026· 8Ω
Source: inc VAT · 20%
£595.00
inc VAT
Back order
Best current price
Updated 17 May 2026
leanbusiness
£595.00
inc VAT
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
Weight12.5kg
Diameter545.0mm
Overall Depth320.0mm
Cutout Diameter492.0mm
Bolt Circle Diameter520.0mm
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
Eighteen Sound
21NTLW5000
21"
Best current price
£595.00
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.
72%
Similarity
35% cheaper£389.00
RCF
LF21X451
21"
Lower price
Xmax14mm-20%
Qts0.37+3%
BL30.5Tm-5%
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Qes0.39+3%
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Similarity
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Lavoce
SAN214.50
21"
Lower price
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Qts0.28-22%
BL39.6Tm+24%
Vas218.3L-19%
Qes0.29-24%
51%
Similarity
29% cheaper£425.00
Beyma
21QLEX1600FE
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Lower price
Xmax13mm-26%
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Qes0.3-21%
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Similarity
28% cheaper£428.34
BishopSound
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21"
Lower price
Xmax15mm-14%
Qts0.42+16%
BL32.6Tm+2%
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69%
Similarity
28% cheaper£428.34
BishopSound
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21"
Lower price
Xmax15mm-14%
Qts0.42+16%
BL32.6Tm+2%
Vas244.2L-10%
Qes0.46+20%
46%
Similarity
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Dayton Audio
HTS545HE-4
21"
Lower price
Xmax21mm+20%
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BL38.2Tm+19%
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Qes0.29-24%
82%
Similarity
25% cheaper£445.00
Celestion
TSQ2145
21"
Lower price
Xmax15mm-14%
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BL33.8Tm+6%
Vas253.8L-6%
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78%
Similarity
19% cheaper£481.99
B&C
21SW115
21"
Lower price
Xmax14mm-20%
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Qes0.39+3%
76%
Similarity
19% cheaper£481.99
B&C
21SW115
21"
Lower price
Xmax14mm-20%
Qts0.360%
BL24.8Tm-22%
Vas278L+3%
Qes0.37-3%
73%
Similarity
17% cheaper£492.21
Eighteen Sound
21LW2600
21"
Lower price
Xmax14.6mm-17%
Qts0.33-8%
BL32.5Tm+2%
Vas333L+23%
Qes0.34-11%
51%
Similarity
16% cheaper£497.00
B&C
21DS115
21"
Lower price
Xmax16.5mm-6%
Qts0.27-25%
BL39.3Tm+23%
Vas204L-24%
Qes0.28-26%
Image unavailable
82%
Similarity
4% cheaper£569.00
Precision Devices
PD.2155-1N
21"
Lower price
Xmax14mm-20%
Qts0.360%
BL30Tm-6%
Vas241L-11%
Qes0.37-2%