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Download for HornrespDayton Audio ND91-8 8Ω
LF DriverMedia
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Overview
LF Driver
Dayton Audio
Dayton Audio ND91-8
Dayton Audio ND91-8 is a 2" 8 ohm LF driver rated at 30W RMS. The validated T/S data includes Fs 71Hz, Qts 0.47, Vas 1.5L, Xmax 5.1mm, sensitivity 82.1dB, plus 16cm³ Vd and 133 EBP. bits tracks UK vendor pricing, price movement, datasheet links, simulator import data, and similar drivers, with a current best price of £20.70.
Size
2"
Impedance
8Ω
RMS Power
30W
Sensitivity
82.1dB
EBP
133
Vented alignment
Vd
16cm³
Datasheet traces
Frequency and impedance curves traced from the manufacturer PDF.
15 degrees240 ptsp1medium
30 degrees219 ptsp1medium
45 degrees201 ptsp1medium
Curve provenanceInspect 4 tracesHide details
These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works
- Trace datasheet-response-trace-poc/v1
15 degrees
Frequency response
240 plotted pointsMedium confidence893 selected pixels of 1,141 - Trace datasheet-response-trace-poc/v1
30 degrees
Frequency response
219 plotted pointsMedium confidence524 selected pixels of 838 - Trace datasheet-response-trace-poc/v1
45 degrees
Frequency response
201 plotted pointsMedium confidence589 selected pixels of 1,073 - Trace datasheet-response-trace-poc/v1
impedance
Impedance response
240 plotted pointsMedium confidence1,432 selected pixels of 1,432
T/S Parameters
Valid
Fs71Hz
Qts0.47
Qes0.53
Qms4.3
Vas1.5L
Re7.8Ω
Le1.24mH
BL5.6Tm
Sd30cm²
Mms5g
Xmax5.1mm
SPL82dB
Power30W
Impedance8Ω
F Low70Hz
F High17000Hz
Pricing & availability
Price definitionsPrice movement
Other offers
1 vendorsoundimports
Updated 11 Sept 2026· 8Ω
Source: inc VAT
£31.32
inc VAT
Out of stock
Best current price
Updated 11 Sept 2026
partsexpress
£20.70
inc VAT·132 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
Weight0.3kg
Diameter103.5mm
Overall Depth56.4mm
Cutout Diameter85.0mm
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
ND91-8
2"
Best current price
£20.70
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.
4 matches
Compare a specific driver
Added drivers stay at the front of the list, whatever the ranges say.
68%
Similarity
£20.70
Dayton Audio
ND91-4
2"
Xmax4.6mm-10%
Qts0.41-13%
BL4.6Tm-18%
Vas1.4L-8%
Qes0.45-15%
Image unavailable
53%
Similarity
Wavecor
SW084OM02
3"
Xmax4.5mm-12%
Qts0.53+13%
BL4.6Tm-19%
Vas1.7L+11%
Qes0.57+8%
49%
Similarity
Tang Band
W3-1876S
3"
Xmax4mm-22%
Qts0.43-9%
BL5.3Tm-6%
Vas0.9L-42%
Qes0.5-6%
49%
Similarity
Tang Band
W3-1876S
3"
Xmax4mm-22%
Qts0.43-9%
BL5.3Tm-6%
Vas0.9L-42%
Qes0.5-6%