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Driver file ready to place in Hornresp’s Drivers folder.
Download for HornrespDayton Audio SIG120-4 4Ω
LF DriverMedia
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Overview
LF Driver
Dayton Audio
Dayton Audio SIG120-4
Dayton Audio SIG120-4 is a 4.75" 4 ohm LF driver rated at 40W RMS. The validated T/S data includes Fs 75Hz, Qts 0.43, Vas 3.1L, Xmax 4mm, sensitivity 86.4dB, plus 23cm³ Vd and 159 EBP. bits tracks UK vendor pricing, price movement, datasheet links, simulator import data, and similar drivers, with a current best price of £24.39.
Size
4.75"
Impedance
4Ω
RMS Power
40W
Sensitivity
86.4dB
89.7dBmanufacturer; using T/S-derived value (3.3dB delta).
EBP
159
Vented alignment
Vd
23cm³
Datasheet traces
Frequency and impedance curves traced from the manufacturer PDF.
30 degrees232 ptsp1medium
on-axis240 ptsp1medium
Curve provenanceInspect 3 tracesHide details
These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works
- Trace datasheet-response-trace-poc/v1
30 degrees
Frequency response
232 plotted pointsMedium confidence1,820 selected pixels of 2,407 - Trace datasheet-response-trace-poc/v1
on-axis
Frequency response
240 plotted pointsMedium confidence4,134 selected pixels of 4,134 - Trace datasheet-response-trace-poc/v1
impedance
Impedance response
240 plotted pointsMedium confidence1,446 selected pixels of 1,446
T/S Parameters
Valid
Fs75Hz
Qts0.43
Qes0.47
Qms4.8
Vas3.1L
Re3.7Ω
Le0.22mH
BL5.0Tm
Sd56cm²
Mms7g
Xmax4.0mm
SPL86dB
Power40W
Impedance4Ω
F Low75Hz
F High8500Hz
Pricing & availability
Price definitionsPrice movement
Other offers
1 vendorsoundimports
Updated 11 Sept 2026· 4Ω
Source: inc VAT
£30.03
inc VAT
Out of stock
Best current price
Updated 11 Sept 2026
partsexpress
£24.39
inc VAT·114 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
Weight0.8kg
Diameter122.9mm
Overall Depth56.0mm
Cutout Diameter95.0mm
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
Dayton Audio
SIG120-4
4.75"
Best current price
£24.39
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.
67%
Similarity
52% cheaper£11.82
Dayton Audio
TCP115-4
4"
Lower price
Xmax4mm0%
Qts0.35-19%
BL5.2Tm+4%
Vas3.1L0%
Qes0.4-15%
35%
Similarity
48% cheaper£12.76
Peerless
SDS-100F25CP09-04
4"
Lower price
Xmax5mm+26%
Qts0.53+23%
BL4.7Tm-6%
Vas2L-36%
Qes0.58+24%
56%
Similarity
43% cheaper£13.87
Peerless
SDS-P830855
4"
Lower price
Xmax5mm+25%
Qts0.48+12%
BL5.2Tm+5%
Vas3.3L+5%
Qes0.54+15%
59%
Similarity
18% cheaper£19.96
Dayton Audio
DS115-8
4"
Lower price
Xmax4.1mm+2%
Qts0.38-12%
BL5.9Tm+18%
Vas4.3L+40%
Qes0.46-2%
43%
Similarity
17% more£28.64
FaitalPRO
4FE42
4"
Higher price
Xmax2.8mm-29%
Qts0.47+9%
BL6Tm+20%
Vas1.9L-39%
Qes0.5+6%
52%
Similarity
42% more£34.74
Visaton
W 100 S - 4 Ohm
4"
Higher price
Xmax4mm0%
Qts0.46+7%
BL3.7Tm-26%
Vas4.5L+45%
Qes0.54+15%
81%
Similarity
52% more£36.97
Dayton Audio
RS125P-8
5"
Higher price
Xmax4mm0%
Qts0.44+2%
BL5.1Tm+2%
Vas4L+28%
Qes0.53+13%
57%
Similarity
52% more£36.97
Dayton Audio
RS125P-4
5"
Higher price
Xmax4mm0%
Qts0.48+12%
BL3.5Tm-30%
Vas4L+28%
Qes0.57+21%
57%
Similarity
52% more£36.97
Dayton Audio
RS125-8
5"
Higher price
Xmax4mm0%
Qts0.34-21%
BL5.7Tm+14%
Vas4.8L+54%
Qes0.42-11%
46%
Similarity
1039% more£277.95
Scanspeak
12M/4631G00
5"
Higher price
Xmax3mm-25%
Qts0.33-23%
BL5.3Tm+6%
Vas2.3L-26%
Qes0.35-26%
87%
Similarity
Wavecor
WF120BD03
4.5"
Xmax4mm0%
Qts0.42-2%
BL4.5Tm-10%
Vas3.3L+5%
Qes0.46-2%
Image unavailable
80%
Similarity
Wavecor
SW118WA01
4.5"
Xmax4mm0%
Qts0.39-9%
BL4.7Tm-6%
Vas3.3L+6%
Qes0.41-13%