REDCATT5FHW
£15.86 · 73% less, betterFs50 Hz −17%, better
Qts0.35 +6%
Vas6.5 L –
BL6.5 T·m +21%, better
Xmax3.2 mm +33%, better
Sensitivity85.4 dB −2.1, worse
4-inch LF driver · 25 W
Tang Band W4-2142 8Ω
8 Ω
£58.53
6.7%Audiophonics · In stock · Ships from France · All 4 offers
- Fs
- 60Hz
- Xmax
- 2.4mm
- SPL
- 88dB
- Pe
- 25W
- BL
- 5.4T·m
- Vd
- 14cm³
- Qts
- 0.33
- Vas
- 6L
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 2 traces
These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works
- Trace datasheet-response-trace-poc/v1
spl
Frequency response
240 plotted pointsMedium confidence1,599 selected pixels of 1,944 - Trace datasheet-response-trace-poc/v1
impedance
Impedance response
240 plotted pointsMedium confidence2,994 selected pixels of 2,994
Tang Band W4-2142 is a 4-inch 8 ohm LF driver rated at 25 W RMS. The validated T/S data includes Fs 60 Hz, Qts 0.33, Vas 6.4 L, Xmax 2.4 mm, sensitivity 87.5 dB, plus 14 cm³ Vd and 154 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 £57.77.
The published T/S values agree with each other
Thiele/Small
- Fs
- 60Hz
- Qts
- 0.33
- Qes
- 0.39
- Qms
- 2.2
- Vas
- 6.4L
- Re
- 6.3Ω
- Le
- 0.022mH
Motor and cone
- BL
- 5.4T·m
- Sd
- 57cm²
- Mms
- 5g
- Xmax
- 2.4mm
- Vd †
- 14cm³
Power and response
- Sensitivity †
- 87.5dB
- Manufacturer sensitivity
- 88dB
- Power
- 25W
- Impedance
- 8Ω
- EBP †
- 154 · Leans vented
Other published values
- Power Peak
- 50
† Calculated by bits from the published values
What this validation status means
Everything else Tang Band lists
LF · Primary · 4″
- BL
- 5.4T·m
- Fs
- 60Hz
- Le
- 0.022mH
- Re
- 6.3Ω
- Sd
- 57cm²
- Mms
- 5g
- Qes
- 0.39
- Qms
- 2.2
- Qts
- 0.33
- SPL
- 87.5dB
- Vas
- 6.4L
- Xmax
- 2.4mm
- Power
- 25W
- Impedance
- 8Ω
- Power Peak
- 50
- Sensitivity
- 88dB
- Calculated sensitivity †
- 87.5dB
- Manufacturer sensitivity
- 88dB
02
Compare
Same-size drivers, compared with the W4-2142. Clear differences are green when better and red when worse.
This driverW4-2142
Best price
£57.77
Fs
60 Hz
Qts
0.33
Vas
6.4 L
BL
5.4 T·m
Xmax
2.4 mm
Sensitivity
87.5 dB
Power
25 W
HiViF5
£23.17 · 60% less, betterFs52 Hz −13%, better
Qts0.33 –
Vas7.3 L +14%, worse
BL8.3 T·m +53%, better
Xmax2.7 mm +13%, better
Sensitivity86.6 dB −0.9
CIAREHW100
£27.63 · 52% less, betterFs70 Hz +17%, worse
Qts0.31 −6%
Vas4.3 L −33%, better
BL5.6 T·m +4%
Xmax4.3 mm +79%, better
Sensitivity88 dB +0.5
MonacorSP-100/8
£31.15 · 46% less, betterFs61 Hz –
Qts0.37 +12%, worse
Vas4.7 L −27%, better
BL5.5 T·m –
Xmax2.5 mm +4%
Sensitivity85.9 dB −1.6
Dayton AudioRS125-8
£37.39 · 35% less, betterFs59 Hz –
Qts0.34 +3%
Vas4.8 L −26%, better
BL5.7 T·m +5%
Xmax4 mm +67%, better
Sensitivity85.8 dB −1.7
MonacorSPH-130
£46.81 · 19% less, betterFs38 Hz −37%, better
Qts0.32 −3%
Vas22 L +243%, worse
BL5.4 T·m –
Xmax2 mm −17%, worse
Sensitivity86.9 dB −0.6
SB AcousticsSB12MNRX2-25-4
£47.06 · 19% less, betterFs64 Hz +6%
Qts0.32 −3%
Vas5.3 L −17%, better
BL3.9 T·m −28%, worse
Xmax2.2 mm −8%
Sensitivity87.9 dB –
SB AcousticsSB12NRX25-8
£51.87 · 10% less, betterFs57 Hz −5%
Qts0.37 +12%, worse
Vas5.3 L −17%, better
BL5.4 T·m –
Xmax5 mm +108%, better
Sensitivity85.8 dB −1.7
SB AcousticsSB12MNRX25-4
£52.29 · 9% less, betterFs58 Hz −3%
Qts0.37 +12%, worse
Vas5.5 L −14%, better
BL3.7 T·m −32%, worse
Xmax2.3 mm −6%
Sensitivity86.1 dB −1.4
Scanspeak12W/8524G00
£54.43 · 6% less, betterFs52 Hz −13%, better
Qts0.32 −3%
Vas8.2 L +28%, worse
BL5.4 T·m –
Xmax3 mm +25%, better
Sensitivity87.2 dB –
Tang BandW4-1320SIF
£57.77 · Same priceFs75 Hz +25%, worse
Qts0.36 +9%
Vas5.2 L −18%, better
BL5.3 T·m –
Xmax3 mm +25%, better
Sensitivity89.2 dB +1.7
SB AcousticsSB12CACS25-8
£58.31 · Same priceFs51 Hz −15%, better
Qts0.37 +12%, worse
Vas6.5 L –
BL5.2 T·m −4%
Xmax5 mm +108%, better
Sensitivity85.4 dB −2.1, worse
Tang BandW4-1337SDF
£71.17 · 23% more, worseFs70 Hz +17%, worse
Qts0.34 +3%
Vas5.6 L −12%, better
BL5.3 T·m –
Xmax2.5 mm +4%
Sensitivity88.9 dB +1.4
ETON5-612/C8/25 RP
£75.32 · 30% more, worseFs55 Hz −8%
Qts0.36 +9%
Vas9.8 L +53%, worse
BL5.9 T·m +9%
Xmax2 mm −17%, worse
Sensitivity88.4 dB +0.9
ETON5-512/C8/25 RP
£83.69 · 45% more, worseFs59 Hz –
Qts0.34 +3%
Vas10 L +56%, worse
BL5.9 T·m +9%
Xmax2.5 mm +4%
Sensitivity89.7 dB +2.2, better
WavecorSW070WA02
£95.79 · 66% more, worseFs73 Hz +22%, worse
Qts0.34 +3%
Vas0.9 L −86%, better
BL4.8 T·m −12%, worse
Xmax2.5 mm +4%
Sensitivity81.9 dB −5.6, worse
Tang BandW5-2143
£113.04 · 96% more, worseFs55 Hz −8%
Qts0.38 +15%, worse
Vas19 L +196%, worse
BL5.4 T·m –
Xmax2.5 mm +4%
Sensitivity90.7 dB +3.2, better
VisatonTI 100
£154.93 · 168% more, worseFs62 Hz +3%
Qts0.41 +24%, worse
Vas5.7 L −11%, better
BL5.0 T·m −8%
Xmax2.3 mm −6%
Sensitivity86.9 dB −0.6
PurifiPTT4.0X04-NFC-01
£251.15 · 335% more, worseFs38 Hz −37%, better
Qts0.30 −9%
Vas6.4 L –
BL6 T·m +11%, better
Xmax8.8 mm +267%, better
Sensitivity82.4 dB −5.1, worse
£334.88 · 480% more, worse
Fs45 Hz −25%, better
Qts0.36 +9%
Vas6 L −6%
BL5.4 T·m –
Xmax3 mm +25%, better
Sensitivity83.2 dB −4.3, worse
£375.54 · 550% more, worse
Fs37 Hz −38%, better
Qts0.33 –
Vas15 L +134%, worse
BL5.3 T·m –
Xmax7 mm +192%, better
Sensitivity85 dB −2.5, worse
Tang BandW4-1749S
No current priceFs60 Hz –
Qts0.34 +3%
Vas6.3 L –
BL5.8 T·m +7%
Xmax0.9 mm −63%, worse
Sensitivity87.5 dB –
HiViBG5N
No current priceFs60 Hz –
Qts0.33 –
Vas7.1 L +11%, worse
BL7.4 T·m +37%, better
Xmax2.5 mm +4%
Sensitivity87.8 dB –
HiViMY5N
No current priceFs57 Hz −5%
Qts0.32 −3%
Vas7 L +9%
BL7.7 T·m +42%, better
Xmax2.5 mm +4%
Sensitivity87.1 dB –
Tang BandW4-657D
No current priceFs70 Hz +17%, worse
Qts0.32 −3%
Vas5.6 L −12%, better
BL5.6 T·m +4%
Xmax3.3 mm +38%, better
Sensitivity89.4 dB +1.9
Tang BandW4-1798S
No current priceFs60 Hz –
Qts0.30 −9%
Vas7.4 L +16%, worse
BL5.8 T·m +6%
Xmax3 mm +25%, better
Sensitivity88.4 dB +0.9
Tang BandW4-1320SMF
No current priceFs70 Hz +17%, worse
Qts0.36 +9%
Vas7.4 L +15%, worse
BL3.5 T·m −35%, worse
Xmax2.4 mm –
Sensitivity89.7 dB +2.2, better
CIAREHWL100
No current priceFs70 Hz +17%, worse
Qts0.31 −6%
Vas4.3 L −33%, better
BL5.6 T·m +4%
Xmax4.3 mm +79%, better
Sensitivity88 dB +0.5
Tang BandW4-992SD
No current priceFs55 Hz −8%
Qts0.35 +6%
Vas5.7 L −11%, better
BL6.4 T·m +19%, better
Xmax3.5 mm +46%, better
Sensitivity85.8 dB −1.7
Tang BandW4-1320SJ
No current priceFs75 Hz +25%, worse
Qts0.35 +6%
Vas6.4 L –
BL4.7 T·m −13%, worse
Xmax3 mm +25%, better
Sensitivity89.4 dB +1.9
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- SoundImports5.0 out of 510 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 |
|---|---|---|---|---|
Audiophonics Import VAT and duty may apply | £58.53, the lowest price | In stock | Visit shop at Audiophonics | |
SoundImports Import VAT and duty may apply | £62.76 | 7.2% above the lowest price | Back order | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr