4.5-inch LF driver · WF120BD series · 26 mm voice coil

Wavecor WF120BD03 4Ω

Name: Wavecor WF120BD03 4 Ohm
Brand: Wavecor
SKU: WF120BD03
Availability: InStock

4 Ω

£120.43

Steady

Lautsprechershop · Ships from Germany · All 1 offer

Open in 00 Simulator

Fs: 70Hz
Xmax: 4mm
SPL: 86dB
Pe: –
BL: 4.5T·m
Vd: 22cm³
Qts: 0.42
Vas: 3L

See all 18 specs

Specifications

Published by Wavecor

Manufacturer page

Datasheet PDF

Wavecor WF120BD03 is a 4.5-inch 4 ohm LF driver. The validated T/S data includes Fs 70 Hz, Qts 0.42, Vas 3.3 L, Xmax 4 mm, sensitivity 85.9 dB, plus 22 cm³ Vd and 152 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 £120.43.

The published T/S values agree with each other

Thiele/Small

Fs: 70Hz
Qts: 0.42
Qes: 0.46
Qms: 5.9
Vas: 3.3L
Re: 3.2Ω

Motor and cone

BL: 4.5T·m
Sd: 54cm²
Mms: 7g
Xmax Derived: 4mm
Vd †: 22cm³
Voice coil: 26mm

Power and response

Sensitivity †: 85.9dB
Impedance: 4Ω
EBP †: 152 · Leans vented

Size and mounting

Diameter: 120.7mm

Other published values

Cms: 0.79mm/N
Rms: 0.49kg/s

† Calculated by bits from the published values

What this validation status means

Everything else Wavecor lists

LF · Primary · 4.5″

BL: 4.5T·m
Fs: 70Hz
Re: 3.2Ω
Sd: 54cm²
Cms: 0.79mm/N
Mms: 7g
Qes: 0.46
Qms: 5.9
Qts: 0.42
Rms: 0.49kg/s
SPL: 85.9dB
Vas: 3.3L
Xmax: 4mm
Impedance: 4Ω
Calculated sensitivity †: 85.9dB
Voice coil: 26mm
Diameter: 120.7mm

Compare

Same-size drivers, compared with the WF120BD03. Clear differences are green when better and red when worse.

This driverWF120BD03

Best price

£120.43

70 Hz

Qts

0.42

Vas

3.3 L

4.5 T·m

Xmax

4 mm

Sensitivity

85.9 dB

Power

–

Dayton AudioTCP115-4

£12.00 · 90% less

Fs54 Hz −23%

Qts0.35 −17%

Vas3.1 L −5%

BL5.2 T·m +16%

Xmax4 mm –

Sensitivity82.8 dB −3.1

Dayton AudioTCP115-8

£12.00 · 90% less

Fs59 Hz −15%

Qts0.43 –

Vas2.5 L −22%

BL7.4 T·m +64%

Xmax4 mm –

Sensitivity81.9 dB −4

Dayton AudioDS115-8

£20.26 · 83% less

Fs55 Hz −21%

Qts0.38 −10%

Vas4.3 L +33%

BL5.9 T·m +31%

Xmax4.1 mm –

Sensitivity84 dB −1.9

Dayton AudioND91-4

£21.01 · 83% less

Fs74 Hz +6%

Qts0.41 –

Vas1.4 L −57%

BL4.6 T·m –

Xmax4.6 mm +15%

Sensitivity83 dB −2.9

Dayton AudioSIG120-4

£24.77 · 79% less

Fs75 Hz +7%

Qts0.43 –

Vas3.1 L −5%

BL5 T·m +11%

Xmax4 mm –

Sensitivity86.4 dB +0.5

Dayton AudioDSA115-8

£30.01 · 75% less

Fs63 Hz −10%

Qts0.42 –

Vas4.0 L +22%

BL5.4 T·m +21%

Xmax4.1 mm –

Sensitivity84.8 dB −1.1

Dayton AudioRS125P-8

£37.53 · 69% less

Fs70 Hz –

Qts0.44 +5%

Vas4.0 L +22%

BL5.1 T·m +13%

Xmax4 mm –

Sensitivity86.1 dB –

Dayton AudioRS125-4

£37.53 · 69% less

Fs57 Hz −18%

Qts0.37 −12%

Vas5.3 L +63%

BL3.6 T·m −19%

Xmax4 mm –

Sensitivity85.5 dB –

SB AcousticsSB12NRXF25-8

£45.28 · 62% less

Fs63 Hz −10%

Qts0.42 –

Vas4.2 L +29%

BL5.5 T·m +22%

Xmax5 mm +25%

Sensitivity85.6 dB –

WavecorWF118WA08

£47.31 · 61% less

Fs58 Hz −17%

Qts0.42 –

Vas4.9 L +51%

BL5.8 T·m +29%

Xmax4 mm –

Sensitivity85.3 dB −0.6

WavecorWF118WA07

£47.31 · 61% less

Fs56 Hz −20%

Qts0.36 −14%

Vas4.9 L +51%

BL4.5 T·m –

Xmax4 mm –

Sensitivity85.6 dB –

WavecorWF120BD05

£81.85 · 32% less

Fs52 Hz −26%

Qts0.43 –

Vas5.3 L +63%

BL4.1 T·m −9%

Xmax4 mm –

Sensitivity84.2 dB −1.7

WavecorWF118WA05

£82.74 · 31% less

Fs65 Hz −7%

Qts0.46 +10%

Vas3.5 L +8%

BL4.3 T·m −4%

Xmax3 mm −25%

Sensitivity85 dB −0.9

WavecorSW118WA01

£84.58 · 30% less

Fs58 Hz −17%

Qts0.39 −7%

Vas3.3 L –

BL4.7 T·m +4%

Xmax4 mm –

Sensitivity84 dB −1.9

WavecorSW118WA02

£84.58 · 30% less

Fs60 Hz −14%

Qts0.47 +12%

Vas3.3 L –

BL5.9 T·m +31%

Xmax4 mm –

Sensitivity83.6 dB −2.3

WavecorWF120BD11

£87.86 · 27% less

Fs58 Hz −17%

Qts0.39 −7%

Vas3.8 L +17%

BL4.2 T·m −7%

Xmax3 mm −25%

Sensitivity84.7 dB −1.2

WavecorWF120BD08

£120.43 · Same price

Fs63 Hz −10%

Qts0.45 +7%

Vas4.3 L +31%

BL5.5 T·m +22%

Xmax4 mm –

Sensitivity85.4 dB −0.5

SEASE0037-08S W15CH001

£384.41 · 219% more

Fs38 Hz −46%

Qts0.42 –

Vas14 L +331%

BL5.1 T·m +13%

Xmax4 mm –

Sensitivity83.9 dB −2

WavecorWF120BD04

No current price

Fs62 Hz −12%

Qts0.37 −12%

Vas4.3 L +31%

BL4.5 T·m –

Xmax4 mm –

Sensitivity86 dB –

CIARENDI3.25

No current price

Fs77 Hz +10%

Qts0.40 −5%

Vas1.7 L −48%

BL4.2 T·m −7%

Xmax3.9 mm –

Sensitivity84.1 dB −1.8

WavecorMR120BD02

No current price

Fs70 Hz –

Qts0.44 +5%

Vas3.2 L –

BL4.2 T·m −7%

Xmax1.5 mm −63%

Sensitivity85.8 dB –

WavecorMR120BD01

No current price

Fs72 Hz –

Qts0.45 +7%

Vas3.1 L −5%

BL4.2 T·m −7%

Xmax1.5 mm −63%

Sensitivity85.9 dB –

WavecorWF120BD06

No current price

Fs48 Hz −31%

Qts0.40 −5%

Vas6.2 L +91%

BL4.1 T·m −9%

Xmax4 mm –

Sensitivity84.2 dB −1.7

CIARECX131

No current price

Fs83 Hz +19%

Qts0.43 –

Vas6.8 L +109%

BL4.6 T·m –

Xmax3.5 mm −13%

Sensitivity91 dB +5.1

CIARECM132

No current price

Fs115 Hz +64%

Qts0.43 –

Vas3.8 L +17%

BL4.4 T·m –

Xmax1.6 mm −60%

Sensitivity92.2 dB +6.3

CIAREHWL130

No current price

Fs53 Hz −24%

Qts0.43 –

Vas11.2 L +245%

BL5.8 T·m +29%

Xmax4 mm –

Sensitivity87.6 dB +1.7

BMS5S117

No current price

Fs95 Hz +36%

Qts0.42 –

Vas3.3 L –

BL11.3 T·m +151%

Xmax5 mm +25%

Sensitivity89.6 dB +3.7

WavecorWF120BD07

No current price

Fs72 Hz –

Qts0.51 +21%

Vas3.3 L –

BL5.5 T·m +22%

Xmax4 mm –

Sensitivity85.3 dB −0.6

WavecorWF120BD12

No current price

Fs57 Hz −19%

Qts0.38 −10%

Vas3.9 L +20%

BL4.2 T·m −7%

Xmax3 mm −25%

Sensitivity84.5 dB −1.4

Tang BandW4-2089

No current price

Fs35 Hz −50%

Qts0.42 –

Vas3.4 L +4%

BL8.7 T·m +93%

Xmax8 mm +100%

Sensitivity77 dB −8.9

Search similar

Tune the match

Choose the published values that matter to your design. Size stays matched to this driver.

Qts

Qes

Vas

Xmax

Where to buy

Prices for delivery to the UK, including VAT. How prices work

Watch price

Shop	Price	Against the lowest	Stock	Link
Lautsprechershop Checked 30 Oct 2026 · Ships from Germany · 4 Ω · Source: inc VAT · 19% Import VAT and duty may apply	£120.43, the lowest price		Stock not listed	Visit shop at Lautsprechershop

Best price over time

Tracked since 28 Sep

bits00 AUDIO

4.5-inch LF driver · WF120BD series · 26 mm voice coil

Wavecor WF120BD03 4Ω

4 Ω

£120.43

Steady

Lautsprechershop · Ships from Germany · All 1 offer

Open in 00 Simulator

Fs: 70Hz
Xmax: 4mm
SPL: 86dB
Pe: –
BL: 4.5T·m
Vd: 22cm³
Qts: 0.42
Vas: 3L

See all 18 specs

Specifications

Published by Wavecor

Manufacturer page

Datasheet PDF

The published T/S values agree with each other

Thiele/Small

Fs: 70Hz
Qts: 0.42
Qes: 0.46
Qms: 5.9
Vas: 3.3L
Re: 3.2Ω

Motor and cone

BL: 4.5T·m
Sd: 54cm²
Mms: 7g
Xmax Derived: 4mm
Vd †: 22cm³
Voice coil: 26mm

Power and response

Sensitivity †: 85.9dB
Impedance: 4Ω
EBP †: 152 · Leans vented

Size and mounting

Diameter: 120.7mm

Other published values

Cms: 0.79mm/N
Rms: 0.49kg/s

† Calculated by bits from the published values

What this validation status means

Everything else Wavecor lists

LF · Primary · 4.5″

BL: 4.5T·m
Fs: 70Hz
Re: 3.2Ω
Sd: 54cm²
Cms: 0.79mm/N
Mms: 7g
Qes: 0.46
Qms: 5.9
Qts: 0.42
Rms: 0.49kg/s
SPL: 85.9dB
Vas: 3.3L
Xmax: 4mm
Impedance: 4Ω
Calculated sensitivity †: 85.9dB
Voice coil: 26mm
Diameter: 120.7mm

Compare

Same-size drivers, compared with the WF120BD03. Clear differences are green when better and red when worse.

This driverWF120BD03

Best price

£120.43

70 Hz

Qts

0.42

Vas

3.3 L

4.5 T·m

Xmax

4 mm

Sensitivity

85.9 dB

Power

–

Dayton AudioTCP115-4

£12.00 · 90% less

Fs54 Hz −23%

Qts0.35 −17%

Vas3.1 L −5%

BL5.2 T·m +16%

Xmax4 mm –

Sensitivity82.8 dB −3.1

Dayton AudioTCP115-8

£12.00 · 90% less

Fs59 Hz −15%

Qts0.43 –

Vas2.5 L −22%

BL7.4 T·m +64%

Xmax4 mm –

Sensitivity81.9 dB −4

Dayton AudioDS115-8

£20.26 · 83% less

Fs55 Hz −21%

Qts0.38 −10%

Vas4.3 L +33%

BL5.9 T·m +31%

Xmax4.1 mm –

Sensitivity84 dB −1.9

Dayton AudioND91-4

£21.01 · 83% less

Fs74 Hz +6%

Qts0.41 –

Vas1.4 L −57%

BL4.6 T·m –

Xmax4.6 mm +15%

Sensitivity83 dB −2.9

Dayton AudioSIG120-4

£24.77 · 79% less

Fs75 Hz +7%

Qts0.43 –

Vas3.1 L −5%

BL5 T·m +11%

Xmax4 mm –

Sensitivity86.4 dB +0.5

Dayton AudioDSA115-8

£30.01 · 75% less

Fs63 Hz −10%

Qts0.42 –

Vas4.0 L +22%

BL5.4 T·m +21%

Xmax4.1 mm –

Sensitivity84.8 dB −1.1

Dayton AudioRS125P-8

£37.53 · 69% less

Fs70 Hz –

Qts0.44 +5%

Vas4.0 L +22%

BL5.1 T·m +13%

Xmax4 mm –

Sensitivity86.1 dB –

Dayton AudioRS125-4

£37.53 · 69% less

Fs57 Hz −18%

Qts0.37 −12%

Vas5.3 L +63%

BL3.6 T·m −19%

Xmax4 mm –

Sensitivity85.5 dB –

SB AcousticsSB12NRXF25-8

£45.28 · 62% less

Fs63 Hz −10%

Qts0.42 –

Vas4.2 L +29%

BL5.5 T·m +22%

Xmax5 mm +25%

Sensitivity85.6 dB –

WavecorWF118WA08

£47.31 · 61% less

Fs58 Hz −17%

Qts0.42 –

Vas4.9 L +51%

BL5.8 T·m +29%

Xmax4 mm –

Sensitivity85.3 dB −0.6

WavecorWF118WA07

£47.31 · 61% less

Fs56 Hz −20%

Qts0.36 −14%

Vas4.9 L +51%

BL4.5 T·m –

Xmax4 mm –

Sensitivity85.6 dB –

WavecorWF120BD05

£81.85 · 32% less

Fs52 Hz −26%

Qts0.43 –

Vas5.3 L +63%

BL4.1 T·m −9%

Xmax4 mm –

Sensitivity84.2 dB −1.7

WavecorWF118WA05

£82.74 · 31% less

Fs65 Hz −7%

Qts0.46 +10%

Vas3.5 L +8%

BL4.3 T·m −4%

Xmax3 mm −25%

Sensitivity85 dB −0.9

WavecorSW118WA01

£84.58 · 30% less

Fs58 Hz −17%

Qts0.39 −7%

Vas3.3 L –

BL4.7 T·m +4%

Xmax4 mm –

Sensitivity84 dB −1.9

WavecorSW118WA02

£84.58 · 30% less

Fs60 Hz −14%

Qts0.47 +12%

Vas3.3 L –

BL5.9 T·m +31%

Xmax4 mm –

Sensitivity83.6 dB −2.3

WavecorWF120BD11

£87.86 · 27% less

Fs58 Hz −17%

Qts0.39 −7%

Vas3.8 L +17%

BL4.2 T·m −7%

Xmax3 mm −25%

Sensitivity84.7 dB −1.2

WavecorWF120BD08

£120.43 · Same price

Fs63 Hz −10%

Qts0.45 +7%

Vas4.3 L +31%

BL5.5 T·m +22%

Xmax4 mm –

Sensitivity85.4 dB −0.5

SEASE0037-08S W15CH001

£384.41 · 219% more

Fs38 Hz −46%

Qts0.42 –

Vas14 L +331%

BL5.1 T·m +13%

Xmax4 mm –

Sensitivity83.9 dB −2

WavecorWF120BD04

No current price

Fs62 Hz −12%

Qts0.37 −12%

Vas4.3 L +31%

BL4.5 T·m –

Xmax4 mm –

Sensitivity86 dB –

CIARENDI3.25

No current price

Fs77 Hz +10%

Qts0.40 −5%

Vas1.7 L −48%

BL4.2 T·m −7%

Xmax3.9 mm –

Sensitivity84.1 dB −1.8

WavecorMR120BD02

No current price

Fs70 Hz –

Qts0.44 +5%

Vas3.2 L –

BL4.2 T·m −7%

Xmax1.5 mm −63%

Sensitivity85.8 dB –

WavecorMR120BD01

No current price

Fs72 Hz –

Qts0.45 +7%

Vas3.1 L −5%

BL4.2 T·m −7%

Xmax1.5 mm −63%

Sensitivity85.9 dB –

WavecorWF120BD06

No current price

Fs48 Hz −31%

Qts0.40 −5%

Vas6.2 L +91%

BL4.1 T·m −9%

Xmax4 mm –

Sensitivity84.2 dB −1.7

CIARECX131

No current price

Fs83 Hz +19%

Qts0.43 –

Vas6.8 L +109%

BL4.6 T·m –

Xmax3.5 mm −13%

Sensitivity91 dB +5.1

CIARECM132

No current price

Fs115 Hz +64%

Qts0.43 –

Vas3.8 L +17%

BL4.4 T·m –

Xmax1.6 mm −60%

Sensitivity92.2 dB +6.3

CIAREHWL130

No current price

Fs53 Hz −24%

Qts0.43 –

Vas11.2 L +245%

BL5.8 T·m +29%

Xmax4 mm –

Sensitivity87.6 dB +1.7

BMS5S117

No current price

Fs95 Hz +36%

Qts0.42 –

Vas3.3 L –

BL11.3 T·m +151%

Xmax5 mm +25%

Sensitivity89.6 dB +3.7

WavecorWF120BD07

No current price

Fs72 Hz –

Qts0.51 +21%

Vas3.3 L –

BL5.5 T·m +22%

Xmax4 mm –

Sensitivity85.3 dB −0.6

WavecorWF120BD12

No current price

Fs57 Hz −19%

Qts0.38 −10%

Vas3.9 L +20%

BL4.2 T·m −7%

Xmax3 mm −25%

Sensitivity84.5 dB −1.4

Tang BandW4-2089

No current price

Fs35 Hz −50%

Qts0.42 –

Vas3.4 L +4%

BL8.7 T·m +93%

Xmax8 mm +100%

Sensitivity77 dB −8.9

Search similar

Tune the match

Choose the published values that matter to your design. Size stays matched to this driver.

Qts

Qes

Vas

Xmax

Where to buy

Prices for delivery to the UK, including VAT. How prices work

Watch price

Shop	Price	Against the lowest	Stock	Link
Lautsprechershop Checked 30 Oct 2026 · Ships from Germany · 4 Ω · Source: inc VAT · 19% Import VAT and duty may apply	£120.43, the lowest price		Stock not listed	Visit shop at Lautsprechershop

Best price over time

Tracked since 28 Sep