REDCATT4FR-1
£11.96 · 63% less, betterFs79 Hz −21%, better
Qts0.52 –
Vas1.8 L +7%
BL4.8 T·m +23%, better
Xmax2.8 mm +124%, better
Sensitivity83.7 dB −3, worse
3-inch LF driver · 10 W
Tang Band W3-315E 8Ω
8 Ω
£32.19
SteadySoundImports · 4 in stock · Ships from Netherlands · All 1 offer
- Fs
- 100Hz
- Xmax
- 1.3mm
- SPL
- 87dB
- Pe
- 10W
- BL
- 3.9T·m
- Vd
- 4cm³
- Qts
- 0.52
- Vas
- 2L
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 1 trace
These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works
- Trace datasheet-response-trace-poc/v1
spl
Frequency response
117 plotted pointsMedium confidence416 selected pixels of 1,880
Tang Band W3-315E is a 3-inch 8 ohm LF driver rated at 10 W RMS. The validated T/S data includes Fs 100 Hz, Qts 0.52, Vas 1.7 L, Xmax 1.3 mm, sensitivity 86.7 dB, plus 4 cm³ Vd and 175 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 £32.19.
The published T/S values agree with each other
Thiele/Small
- Fs
- 100Hz
- Qts
- 0.52
- Qes
- 0.57
- Qms
- 5.5
- Vas
- 1.7L
- Re
- 6.6Ω
- Le
- 0.20mH
Motor and cone
- BL
- 3.9T·m
- Sd
- 32cm²
- Mms
- 2g
- Xmax
- 1.3mm
- Vd †
- 4cm³
Power and response
- Sensitivity †
- 86.7dB
- Manufacturer sensitivity
- 87dB
- Power
- 10W
- Impedance
- 8Ω
- EBP †
- 175 · Leans vented
Other published values
- Power Peak
- 20
† Calculated by bits from the published values
What this validation status means
Everything else Tang Band lists
LF · Primary · 3″
- BL
- 3.9T·m
- Fs
- 100Hz
- Le
- 0.20mH
- Re
- 6.6Ω
- Sd
- 32cm²
- Mms
- 2g
- Qes
- 0.57
- Qms
- 5.5
- Qts
- 0.52
- SPL
- 86.7dB
- Vas
- 1.7L
- Xmax
- 1.3mm
- Power
- 10W
- Impedance
- 8Ω
- Power Peak
- 20
- Sensitivity
- 87dB
- Calculated sensitivity †
- 86.7dB
- Manufacturer sensitivity
- 87dB
02
Compare
Same-size drivers, compared with the W3-315E. Clear differences are green when better and red when worse.
This driverW3-315E
Best price
£32.19
Fs
100 Hz
Qts
0.52
Vas
1.7 L
BL
3.9 T·m
Xmax
1.3 mm
Sensitivity
86.7 dB
Power
10 W
VisatonFRS 8 M
£12.94 · 60% less, betterFs125 Hz +25%, worse
Qts0.49 −6%
Vas1.1 L −35%, better
BL4 T·m –
Xmax0.25 mm −80%, worse
Sensitivity87.7 dB +1
REDCATT4FR-2
£16.62 · 48% less, betterFs80 Hz −20%, better
Qts0.51 –
Vas2.0 L +17%, worse
BL4.6 T·m +18%, better
Xmax0.35 mm −72%, worse
Sensitivity84.4 dB −2.3, worse
Sica3.5 F 1 CS
£16.66 · 48% less, betterFs107 Hz +7%
Qts0.57 +10%
Vas1.4 L −17%, better
BL4.2 T·m +8%
Xmax1.5 mm +20%, better
Sensitivity86.4 dB –
MonacorSPX-32M
£18.42 · 43% less, betterFs110 Hz +10%, worse
Qts0.56 +8%
Vas1.6 L −5%
BL3.7 T·m −5%
Xmax1.1 mm −12%, worse
Sensitivity87.5 dB +0.8
Sica3.5 H 1 CS
£18.42 · 43% less, betterFs85 Hz −15%, better
Qts0.53 –
Vas1.8 L +7%
BL4.8 T·m +24%, better
Xmax2.5 mm +100%, better
Sensitivity84.9 dB −1.8
MonacorSPX-31M
£19.26 · 40% less, betterFs110 Hz +10%, worse
Qts0.58 +12%, worse
Vas1.3 L −23%, better
BL3.6 T·m −6%
Xmax1.1 mm −12%, worse
Sensitivity86 dB −0.7
MonacorSPX-21M
£22.52 · 30% less, betterFs170 Hz +70%, worse
Qts0.47 −10%
Vas0.1 L −94%, better
BL3.3 T·m −15%, worse
Xmax1.2 mm −4%
Sensitivity81.7 dB −5, worse
Sica3.5 L 1 SL
£23.36 · 27% less, betterFs108 Hz +8%
Qts0.57 +10%
Vas1.4 L −17%, better
BL4.3 T·m +10%
Xmax1.5 mm +20%, better
Sensitivity86.6 dB –
EminenceALPHA 3-8
£24.24 · 25% less, betterFs118 Hz +18%, worse
Qts0.50 −4%
Vas0.95 L −43%, better
BL3.9 T·m –
Xmax2.4 mm +92%, better
Sensitivity86.7 dB –
Tang BandW3-871B
£27.63 · 14% less, betterFs110 Hz +10%, worse
Qts0.52 –
Vas1.2 L −30%, better
BL3.7 T·m −5%
Xmax0.5 mm −60%, worse
Sensitivity86.1 dB −0.6
Dayton AudioRS100P-8
£29.91 · 7% less, betterFs96 Hz −4%
Qts0.54 +4%
Vas1.8 L +8%
BL4.0 T·m –
Xmax3.7 mm +196%, better
Sensitivity85.5 dB −1.2
Dayton AudioRS100-4
£29.91 · 7% less, betterFs85 Hz −15%, better
Qts0.53 –
Vas1.4 L −14%, better
BL3.2 T·m −18%, worse
Xmax4 mm +220%, better
Sensitivity83.3 dB −3.4, worse
MarkaudioCHN-719
£37.64 · 17% more, worseFs68 Hz −32%, better
Qts0.50 −4%
Vas4.7 L +181%, worse
BL4.0 T·m –
Xmax4.3 mm +244%, better
Sensitivity86.1 dB −0.6
Tang BandW3-1231SN
£46.05 · 43% more, worseFs100 Hz –
Qts0.34 −35%, better
Vas1.4 L −16%, better
BL4.4 T·m +14%, better
Xmax1.3 mm –
Sensitivity87.2 dB +0.5
Scanspeak10F/8414G10
£66.31 · 106% more, worseFs100 Hz –
Qts0.51 –
Vas1.6 L −7%
BL4.3 T·m +11%, better
Xmax2.3 mm +84%, better
Sensitivity85.9 dB −0.8
VisatonB 100
£73.93 · 130% more, worseFs75 Hz −25%, better
Qts0.52 –
Vas5.3 L +214%, worse
BL4.1 T·m +5%
Xmax1.6 mm +32%, better
Sensitivity88.2 dB +1.5
VisatonHX 10
£99.54 · 209% more, worseFs80 Hz −20%, better
Qts0.50 −4%
Vas5.1 L +204%, worse
BL3.9 T·m –
Xmax1.5 mm +20%, better
Sensitivity88.3 dB +1.6
Tang BandW3-1053SC
No current priceFs100 Hz –
Qts0.52 –
Vas1.8 L +5%
BL3.7 T·m −5%
Xmax0.75 mm −40%, worse
Sensitivity87 dB –
Tang BandW3-316B
No current priceFs100 Hz –
Qts0.44 −15%, better
Vas1.9 L +12%, worse
BL4.1 T·m +6%
Xmax1.2 mm −4%
Sensitivity88 dB +1.3
WavecorSW084OM02
No current priceFs77 Hz −23%, better
Qts0.53 –
Vas1.7 L –
BL4.6 T·m +18%, better
Xmax4.5 mm +260%, better
Sensitivity83.4 dB −3.3, worse
Tang BandW3-926SDF
No current priceFs100 Hz –
Qts0.49 −6%
Vas1.9 L +12%, worse
BL3.7 T·m −4%
Xmax0.75 mm −40%, worse
Sensitivity87.5 dB +0.8
WavecorFR055WA04
No current priceFs128 Hz +28%, worse
Qts0.51 –
Vas0.33 L −80%, better
BL3.3 T·m −15%, worse
Xmax1.4 mm +8%
Sensitivity83 dB −3.7, worse
Tang BandW3-926SD
No current priceFs110 Hz +10%, worse
Qts0.46 −12%, better
Vas1.9 L +12%, worse
BL3.8 T·m –
Xmax0.75 mm −40%, worse
Sensitivity89 dB +2.3, better
Tang BandW3-1319SA
No current priceFs110 Hz +10%, worse
Qts0.55 +6%
Vas1.8 L +5%
BL3.5 T·m −9%
Xmax0.5 mm −60%, worse
Sensitivity87.4 dB +0.7
MorelINTEGRA 424
No current priceFs120 Hz +20%, worse
Qts0.48 −8%
Vas2 L +19%, worse
BL4.3 T·m +11%, better
Xmax3 mm +140%, better
Sensitivity89.6 dB +2.9, better
CIARECM100
No current priceFs160 Hz +60%, worse
Qts0.43 −17%, better
Vas1.8 L +7%
BL4.1 T·m +5%
Xmax1.9 mm +52%, better
Sensitivity93.5 dB +6.8, better
CIAREFXI3.21
No current priceFs90 Hz −10%, better
Qts0.44 −15%, better
Vas1.8 L +7%
BL3.7 T·m −5%
Xmax2 mm +60%, better
Sensitivity86.3 dB –
MonacorSP-45/8
No current priceFs120 Hz +20%, worse
Qts0.55 +6%
Vas1.5 L −11%, better
BL3.4 T·m −13%, worse
Xmax0.75 mm −40%, worse
Sensitivity87.8 dB +1.1
WavecorSW084OM01
No current priceFs74 Hz −26%, better
Qts0.44 −15%, better
Vas1.7 L –
BL3.6 T·m −8%
Xmax4.5 mm +260%, better
Sensitivity83.8 dB −2.9, worse
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- SoundImports4.5 out of 57 ratings · Checked 26 Oct 2026Read reviews on SoundImports
Each shop collects its own ratings. Bits shows them as published and doesn't verify them.
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
SoundImports Import VAT and duty may apply | £32.19, the lowest price | 4 in stock | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr