Hornresp
.txt · Hornresp driver database
Driver file ready to place in Hornresp’s Drivers folder.
Download for HornrespEighteen Sound 21LW1400 8Ω
LF DriverMedia
Overview
LF Driver
Eighteen Sound
Eighteen Sound 21LW1400
Eighteen Sound 21LW1400 is a 21" 8 ohm LF driver rated at 1000W RMS. The validated T/S data includes Fs 28Hz, Qts 0.24, Vas 385L, Xmax 9.5mm, sensitivity 97.5dB, plus 1577cm³ Vd and 117 EBP. bits tracks UK vendor pricing, price movement, datasheet links, simulator import data, and similar drivers, with a current best price of £426.63.
Size
21"
Impedance
8Ω
RMS Power
1000W
Sensitivity
97.5dB
99.0dBmanufacturer; using T/S-derived value (1.5dB delta).
EBP
117
Vented alignment
Vd
1577cm³
Datasheet traces
Frequency and impedance curves traced from the manufacturer PDF.
frequency response240 ptsp2medium
Curve provenanceInspect 1 traceHide 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 confidence2,113 selected pixels of 2,386
T/S Parameters
Valid
Fs28Hz
Qts0.24
Qes0.24
Qms9.3
Vas385.0L
Re5.0Ω
Le2.85mH
BL33.5Tm
Sd1660cm²
Mms296g
Xmax9.5mm
SPL98dB
Power1000W
Power Nominal1000W
Impedance8Ω
F Low24Hz
F High2000Hz
Pricing & availability
Price definitionsOffers & B-stock
1 hidden from price comparisons
Price movement
Other offers
2 vendorsleanaudio
Updated 11 Sept 2026· 8Ω
Source: inc VAT · 20%
£480.00
inc VAT
Back order
thomann
Updated 11 Sept 2026
Source: inc VAT · 20%
£629.00
inc VAT
In stock
Best current price
Updated 17 May 2026
leanbusiness
£426.63
Avg £527.82£101.19 below avg (-19.2%)
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
Weight17.0kg
Diameter545.0mm
Overall Depth259.0mm
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
21LW1400
21"
Best current price
£426.63
Compare on
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