SB AcousticsSB16PFCR25-4
£21.76 · 61% less, betterFs35 Hz –
Qts0.34 −8%
Vas32.7 L +18%, worse
BL5 T·m –
Xmax4.5 mm −18%, worse
Sensitivity87.6 dB +0.6
6-inch LF driver · SB17 series · 36 mm voice coil · 60 W
SB Acoustics SB17NRX2C35-4 4Ω
4 Ω
- Fs
- 36Hz
- Xmax
- 5.5mm
- SPL
- 87dB
- Pe
- 60W
- BL
- 4.9T·m
- Vd
- 65cm³
- Qts
- 0.37
- Vas
- 28L
Manufacturer response and impedance data, with source and trace details below. The left and right arrow keys read every shown curve at a frequency, a twelfth of an octave at a time, or an octave with Shift. Escape clears the reading.
Curve provenanceInspect 3 traces
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
240 plotted pointsMedium confidence1,909 selected pixels of 3,013 - Trace datasheet-response-trace-poc/v1
60 degrees
Frequency response
240 plotted pointsMedium confidence1,271 selected pixels of 2,860 - Trace datasheet-response-trace-poc/v1
impedance
Impedance response
240 plotted pointsMedium confidence1,910 selected pixels of 5,137
Published graphs
SB Acoustics SB17NRX2C35-4 is a 6-inch 4 ohm LF driver rated at 60 W RMS. The validated T/S data includes Fs 36 Hz, Qts 0.37, Vas 27.6 L, Xmax 5.5 mm, sensitivity 87 dB, plus 65 cm³ Vd and 88 EBP. bits tracks UK, EU and US shop prices, price movement, datasheet links, simulator import data, and similar drivers, with a current best price of £55.41.
The published T/S values agree with each other
Thiele/Small
- Fs
- 36Hz
- Qts
- 0.37
- Qes
- 0.41
- Qms
- 4.5
- Vas
- 27.6L
- Re
- 3.1Ω
- Le
- 0.13mH
Motor and cone
- BL
- 4.9T·m
- Sd
- 118cm²
- Mms
- 14g
- Xmax
- 5.5mm
- Vd †
- 65cm³
- Voice coil
- 36mm
- Flux density
- 0.93T
Power and response
- Sensitivity †
- 87dB
- Manufacturer sensitivity
- 90dB
- Power
- 60W
- Impedance
- 4Ω
- EBP †
- 88 · Sealed or vented
Size and mounting
- Weight
- 1.6kg
Other published values
- Cms
- 1.40mm/N
Sensitivity shows 87.0 dB, calculated from the T/S values. SB Acoustics publishes 90.0 dB, 3.0 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else SB Acoustics lists
LF · Primary · 6″
- BL
- 4.9T·m
- Fs
- 36Hz
- Le
- 0.13mH
- Re
- 3.1Ω
- Sd
- 118cm²
- Cms
- 1.40mm/N
- Mms
- 14g
- Qes
- 0.41
- Qms
- 4.5
- Qts
- 0.37
- SPL
- 87dB
- Vas
- 27.6L
- Xmax
- 5.5mm
- Power
- 60W
- Impedance
- 4Ω
- Flux density
- 0.93T
- Sensitivity
- 90dB
- Calculated sensitivity †
- 87dB
- Manufacturer sensitivity
- 90dB
- Voice coil
- 36mm
- Weight
- 1.6kg
02
Compare
Same-size drivers, compared with the SB17NRX2C35-4. Clear differences are green when better and red when worse.
This driverSB17NRX2C35-4
Best price
£55.41
Fs
36 Hz
Qts
0.37
Vas
27.6 L
BL
4.9 T·m
Xmax
5.5 mm
Sensitivity
87 dB
Power
60 W
SB AcousticsSB16PFC25-4
£23.44 · 58% less, betterFs35 Hz –
Qts0.34 −8%
Vas32.7 L +18%, worse
BL5 T·m –
Xmax4.5 mm −18%, worse
Sensitivity87.6 dB +0.6
SB AcousticsSB15MFC30-8
£48.66 · 12% less, betterFs39 Hz +8%
Qts0.37 –
Vas17.7 L −36%, better
BL5.6 T·m +14%, better
Xmax5 mm −9%
Sensitivity86.2 dB −0.8
SB AcousticsSB17MFC35-8
£54.89 · Same priceFs33 Hz −8%
Qts0.37 –
Vas39 L +41%, worse
BL5.9 T·m +20%, better
Xmax5.5 mm –
Sensitivity87.5 dB +0.5
SB AcousticsSB17NRX2C35-8
£55.41 · Same priceFs37 Hz –
Qts0.42 +14%, worse
Vas27 L –
BL6.3 T·m +28%, better
Xmax5.5 mm –
Sensitivity86.5 dB −0.5
SB AcousticsSB17NRXC35-4
£58.18 · 5% more, worseFs35 Hz –
Qts0.32 −14%, better
Vas35.2 L +28%, worse
BL4.8 T·m –
Xmax5.5 mm –
Sensitivity88.5 dB +1.5
Scanspeak18W/4424G00
£58.61 · 6% more, worseFs49 Hz +36%, worse
Qts0.38 –
Vas24.1 L −13%, better
BL5.2 T·m +6%
Xmax2.8 mm −49%, worse
Sensitivity90.3 dB +3.3, better
MonacorSPH-176
£58.80 · 6% more, worseFs39 Hz +8%
Qts0.37 –
Vas27 L –
BL7.7 T·m +57%, better
Xmax5.5 mm –
Sensitivity87.6 dB +0.6
Dayton AudioRS180P-4
£59.83 · 8% more, worseFs38 Hz +5%
Qts0.39 +5%
Vas27.3 L –
BL4.7 T·m −5%
Xmax6 mm +9%
Sensitivity86.9 dB –
SB AcousticsSB15NBAC30-8
£62.57 · 13% more, worseFs36 Hz –
Qts0.37 –
Vas17 L −38%, better
BL5.7 T·m +16%, better
Xmax5 mm −9%
Sensitivity84.7 dB −2.3, worse
SB AcousticsSB15NAC30-8
£69.45 · 25% more, worseFs36 Hz –
Qts0.37 –
Vas17.7 L −36%, better
BL5.9 T·m +20%, better
Xmax5 mm −9%
Sensitivity85.1 dB −1.9
SB AcousticsSB17NAC35-4
£71.13 · 28% more, worseFs32 Hz −11%, better
Qts0.32 −14%, better
Vas33 L +20%, worse
BL5.2 T·m +6%
Xmax5.5 mm –
Sensitivity87.1 dB –
SB AcousticsSB15CAC30-8
£76.56 · 38% more, worseFs36 Hz –
Qts0.38 –
Vas17.9 L −35%, better
BL5.7 T·m +16%, better
Xmax5 mm −9%
Sensitivity84.8 dB −2.2, worse
SB AcousticsSB15CRC30-4
£81.08 · 46% more, worseFs37 Hz –
Qts0.32 −14%, better
Vas17.3 L −37%, better
BL4.5 T·m −7%
Xmax5.5 mm –
Sensitivity85.9 dB −1.1
SB AcousticsSB17CRC35-4
£85.53 · 54% more, worseFs32 Hz −13%, better
Qts0.32 −14%, better
Vas35.5 L +29%, worse
BL5 T·m –
Xmax5.5 mm –
Sensitivity87 dB –
SB AcousticsSB17CAC35-8
£87.88 · 59% more, worseFs28 Hz −22%, better
Qts0.36 –
Vas42 L +52%, worse
BL6.2 T·m +27%, better
Xmax5.5 mm –
Sensitivity85.7 dB −1.3
WavecorWF182BD12
£118.19 · 113% more, worseFs30 Hz −18%, better
Qts0.37 –
Vas32.4 L +17%, worse
BL8.2 T·m +67%, better
Xmax5.5 mm –
Sensitivity85.4 dB −1.6
WavecorWF182BD17
£121.93 · 120% more, worseFs33 Hz −8%
Qts0.35 −5%
Vas24.3 L −12%, better
BL6.5 T·m +33%, better
Xmax5.5 mm –
Sensitivity85.8 dB −1.2
VisatonAL 130
£129.53 · 134% more, worseFs43 Hz +19%, worse
Qts0.38 –
Vas13 L −53%, better
BL5.6 T·m +14%, better
Xmax6 mm +9%
Sensitivity85.9 dB −1.1
Scanspeak15W/8534T00
£154.86 · 179% more, worseFs32 Hz −11%, better
Qts0.39 +5%
Vas30 L +9%
BL5.5 T·m +12%, better
Xmax5 mm −9%
Sensitivity85.6 dB −1.4
WavecorWF182BD20
£188.39 · 240% more, worseFs30 Hz −18%, better
Qts0.37 –
Vas32.4 L +17%, worse
BL8.2 T·m +67%, better
Xmax5.5 mm –
Sensitivity85.4 dB −1.6
Tang BandW5-1880
£209.33 · 278% more, worseFs48 Hz +33%, worse
Qts0.32 −14%, better
Vas26.5 L −4%
BL5.5 T·m +11%, better
Xmax5 mm −9%
Sensitivity90.9 dB +3.9, better
AccutonC158-8-085
£326.51 · 489% more, worseFs37 Hz –
Qts0.36 –
Vas27.3 L –
BL7.7 T·m +57%, better
Xmax5 mm −9%
Sensitivity87.5 dB +0.5
HiViS6.5R
No current priceFs41 Hz +14%, worse
Qts0.38 –
Vas23.2 L −16%, better
BL6.5 T·m +33%, better
Xmax5.8 mm +5%
Sensitivity87.8 dB +0.8
WavecorWF182BD09
No current priceFs33 Hz −8%
Qts0.35 −5%
Vas24.3 L −12%, better
BL6.5 T·m +33%, better
Xmax5.5 mm –
Sensitivity85.8 dB −1.2
HiViSS6.5
No current priceFs42 Hz +17%, worse
Qts0.39 +5%
Vas24.8 L −10%, better
BL6.4 T·m +31%, better
Xmax5.8 mm +5%
Sensitivity88.1 dB +1.1
SB AcousticsMW16PF-8
No current priceFs29 Hz −19%, better
Qts0.38 –
Vas48.4 L +75%, worse
BL5.8 T·m +18%, better
Xmax5.5 mm –
Sensitivity86.5 dB −0.5
Supravox165 GMF
No current priceFs70 Hz +94%, worse
Qts0.39 +5%
Vas40 L +45%, worse
BL5.6 T·m +14%, better
Xmax6 mm +9%
Sensitivity97.2 dB +10.2, better
CelestionNTR06-1705D
No current priceFs49 Hz +36%, worse
Qts0.38 –
Vas21.4 L −22%, better
BL8.2 T·m +67%, better
Xmax6 mm +9%
Sensitivity90 dB +3, better
HiViSS6.5R
No current priceFs42 Hz +17%, worse
Qts0.39 +5%
Vas21.6 L −22%, better
BL6.5 T·m +33%, better
Xmax5.8 mm +5%
Sensitivity87.7 dB +0.7
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
Lean Audio | £55.41, the lowest price | 2 in stock | Visit shop at Lean Audio | |
Lean Business | £55.41 | Stock not listed | Visit shop at Lean Business | |
Willys-Hifi | £72.30 | 31% above the lowest price | Stock not listed | Visit shop at Willys-Hifi |
RumoH Import VAT and duty may apply | £63.47 | 15% above the lowest price | Stock not listed | Visit shop at RumoH |
SoundImports Import VAT and duty may apply | £63.59 | 15% above the lowest price | Back order | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr
Recent changes
- 1 OctWillys-Hifi£74.95 → £72.30Down 3.5% from £74.95
- 30 SepWillys-Hifi£73.95 → £74.95Up 1.4% from £73.95
- 16 SepWillys-Hifi£74.95 → £73.95Down 1.3% from £74.95