12-inch LF driver · SB34 series · 76 mm voice coil · 300 W

SB Acoustics SB34SWPL76-4 4Ω

Name: SB Acoustics SB34SWPL76-4 4 Ohm
Brand: SB Acoustics
SKU: SB34SWPL76-4
Availability: InStock

4 Ω

7 ratings at 1 shop

£246.52

0.1%

Willys-Hifi · All 6 offers

Open in 00 Simulator

Fs: 19Hz
Xmax: 15mm
SPL: 84dB
Pe: 300W
BL: 18.3T·m
Vd: 687cm³
Qts: 0.32
Vas: 79L

See all 21 specs

Curve provenanceInspect 3 traces

These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works

30 degrees
Frequency response
Trace datasheet-response-trace-poc/v1
240 plotted pointsMedium confidence1,394 selected pixels of 2,921
Manufacturer datasheet, page 1
60 degrees
Frequency response
Trace datasheet-response-trace-poc/v1
225 plotted pointsMedium confidence1,208 selected pixels of 2,538
Manufacturer datasheet, page 1
impedance
Impedance response
Trace datasheet-response-trace-poc/v1
240 plotted pointsMedium confidence2,001 selected pixels of 6,151
Manufacturer datasheet, page 1

Published graphs

SB Acoustics SB34SWPL76-4 manufacturer graph 1

Specifications

Published by SB Acoustics

Manufacturer page

Datasheet PDF

SB Acoustics SB34SWPL76-4 is a 12-inch 4 ohm LF driver rated at 300 W RMS. The validated T/S data includes Fs 19 Hz, Qts 0.32, Vas 79 L, Xmax 15 mm, sensitivity 84.2 dB, plus 687 cm³ Vd and 58 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 £200.87.

The published T/S values agree with each other

Thiele/Small

Fs: 19Hz
Qts: 0.32
Qes: 0.33
Qms: 7.7
Vas: 79L
Re: 3.5Ω
Le: 5.30mH

Motor and cone

BL: 18.3T·m
Sd: 458cm²
Mms: 264g
Xmax: 15mm
Vd †: 687cm³
Voice coil: 76mm
Flux density: 0.62T

Power and response

Sensitivity †: 84.2dB
Manufacturer sensitivity: 85dB
Power: 300W
Impedance: 4Ω
EBP †: 58 · Sealed or vented

Size and mounting

Weight: 7.7kg

Other published values

Cms: 0.27mm/N

† Calculated by bits from the published values

What this validation status means

Everything else SB Acoustics lists

LF · Primary · 12″

BL: 18.3T·m
Fs: 19Hz
Le: 5.30mH
Re: 3.5Ω
Sd: 458cm²
Cms: 0.27mm/N
Mms: 264g
Qes: 0.33
Qms: 7.7
Qts: 0.32
SPL: 84.2dB
Vas: 79L
Xmax: 15mm
Power: 300W
Impedance: 4Ω
Flux density: 0.62T
Sensitivity: 85dB
Calculated sensitivity †: 84.2dB
Manufacturer sensitivity: 85dB
Voice coil: 76mm
Weight: 7.7kg

Compare

Same-size drivers, compared with the SB34SWPL76-4. Clear differences are green when better and red when worse.

This driverSB34SWPL76-4

Best price

£200.87

19 Hz

Qts

0.32

Vas

79 L

18.3 T·m

Xmax

15 mm

Sensitivity

84.2 dB

Power

300 W

B&C12CL64

£79.00 · 61% less

Fs52 Hz +174%

Qts0.30 −6%

Vas64 L −19%

BL17.5 T·m −4%

Xmax4.5 mm −70%

Sensitivity96.5 dB +12.3

CelestionTF1225E

£99.00 · 51% less

Fs53 Hz +177%

Qts0.33 +4%

Vas67.7 L −14%

BL17.7 T·m −3%

Xmax5.3 mm −65%

Sensitivity96.3 dB +12.1

B&C12HPL64

£132.00 · 34% less

Fs52 Hz +174%

Qts0.32 –

Vas85 L +8%

BL14.9 T·m −19%

Xmax4 mm −73%

Sensitivity97.4 dB +13.2

Beyma12MC500

£150.88 · 25% less

Fs57 Hz +200%

Qts0.34 +6%

Vas57 L −28%

BL18.3 T·m –

Xmax8 mm −47%

Sensitivity96.8 dB +12.6

Beyma12G40

£153.72 · 23% less

Fs44 Hz +132%

Qts0.30 −6%

Vas81 L –

BL18.4 T·m –

Xmax7 mm −53%

Sensitivity95.6 dB +11.4

REDCATT12NPM

£167.38 · 17% less

Fs49 Hz +158%

Qts0.31 −3%

Vas63.6 L −19%

BL17.3 T·m −5%

Xmax4.0 mm −73%

Sensitivity95.7 dB +11.5

EminenceKAPPALITE 3012HO

£187.01 · 7% less

Fs52 Hz +174%

Qts0.32 –

Vas81.1 L –

BL15.9 T·m −13%

Xmax6.2 mm −59%

Sensitivity97.4 dB +13.2

CIARE12.00SW

£199.00 · Same price

Fs29 Hz +53%

Qts0.29 −9%

Vas55 L −30%

BL19.5 T·m +7%

Xmax13.5 mm −10%

Sensitivity88.1 dB +3.9

CelestionFTR12-4080DL

£200.12 · Same price

Fs29 Hz +52%

Qts0.30 −5%

Vas68.6 L −13%

BL24.1 T·m +31%

Xmax13.6 mm −9%

Sensitivity88.8 dB +4.6

B&C12FG100

£227.46 · 13% more

Fs34 Hz +79%

Qts0.32 –

Vas53 L −33%

BL17.2 T·m −6%

Xmax10.3 mm −31%

Sensitivity89.9 dB +5.7

Dayton AudioRSS315HO-4

£274.72 · 37% more

Fs26 Hz +38%

Qts0.31 −3%

Vas53.7 L −32%

BL20 T·m +9%

Xmax12.3 mm −18%

Sensitivity86.7 dB +2.5

BMS12N630

£283.85 · 41% more

Fs29 Hz +51%

Qts0.33 +3%

Vas85.5 L +8%

BL19.8 T·m +8%

Xmax8 mm −47%

Sensitivity89.6 dB +5.4

Eighteen Sound12NCX910

£436.54 · 117% more

Fs57 Hz +200%

Qts0.30 −6%

Vas58 L −27%

BL18.1 T·m –

Xmax6.9 mm −54%

Sensitivity97.4 dB +13.2

Eighteen Sound12NCX910N

£478.98 · 138% more

Fs57 Hz +200%

Qts0.30 −6%

Vas58 L −27%

BL18.1 T·m –

Xmax6.9 mm −54%

Sensitivity97.4 dB +13.2

Oberton12NSW600

No current price

Fs42 Hz +121%

Qts0.32 –

Vas62.3 L −21%

BL20.2 T·m +10%

Xmax14.3 mm −5%

Sensitivity93.5 dB +9.3

CIARECSD124-22

No current price

Fs34 Hz +79%

Qts0.30 −6%

Vas54 L −32%

BL18.2 T·m –

Xmax13 mm −13%

Sensitivity90.2 dB +6

PRV Audio12MB2000FT

No current price

Fs56 Hz +193%

Qts0.32 –

Vas66.9 L −15%

BL17.7 T·m −3%

Xmax6 mm −60%

Sensitivity97.5 dB +13.3

Eighteen Sound12NTLX3500

No current price

Fs39 Hz +105%

Qts0.33 +3%

Vas79.6 L –

BL17.1 T·m −7%

Xmax7.9 mm −47%

Sensitivity93.3 dB +9.1

JensenBP12250-8

No current price

Fs50 Hz +164%

Qts0.32 –

Vas73.5 L −7%

BL16.4 T·m −10%

Xmax3.1 mm −79%

Sensitivity96.4 dB +12.2

Eighteen Sound12MB606

No current price

Fs50 Hz +163%

Qts0.32 –

Vas84 L +6%

BL16 T·m −13%

Xmax6.5 mm −57%

Sensitivity96.9 dB +12.7

CIARE12.75W1

No current price

Fs49 Hz +158%

Qts0.33 +3%

Vas67 L −15%

BL18.9 T·m +3%

Xmax6 mm −60%

Sensitivity95.7 dB +11.5

FaneCOLOSSUS 12MBH

No current price

Fs48 Hz +153%

Qts0.34 +5%

Vas75 L −5%

BL17.5 T·m −4%

Xmax6 mm −60%

Sensitivity95.8 dB +11.6

Eighteen Sound12W600

No current price

Fs50 Hz +163%

Qts0.30 −6%

Vas73 L −8%

BL17.3 T·m −5%

Xmax6.5 mm −57%

Sensitivity96.6 dB +12.4

PRV Audio12MB2000FT-NDY

No current price

Fs55 Hz +190%

Qts0.30 −6%

Vas71.5 L −9%

BL17.7 T·m −3%

Xmax6 mm −60%

Sensitivity97.9 dB +13.7

MonacorSP-12A/302PA

No current price

Fs50 Hz +163%

Qts0.34 +6%

Vas77 L –

BL17.0 T·m −7%

Xmax5 mm −67%

Sensitivity96.4 dB +12.2

Sica12 C 2.5 CP

No current price

Fs51 Hz +166%

Qts0.30 −6%

Vas84.5 L +7%

BL17.3 T·m −5%

Xmax5 mm −67%

Sensitivity97.5 dB +13.3

CelestionCF1230F

No current price

Fs57 Hz +197%

Qts0.32 –

Vas49.6 L −37%

BL18.3 T·m –

Xmax7.5 mm −50%

Sensitivity96.2 dB +12

Sica12 S 3 PL

No current price

Fs42 Hz +121%

Qts0.34 +6%

Vas76.9 L –

BL16.8 T·m −8%

Xmax7 mm −53%

Sensitivity94 dB +9.8

B&C12FL76

No current price

Fs50 Hz +163%

Qts0.30 −6%

Vas57 L −28%

BL18.7 T·m –

Xmax6 mm −60%

Sensitivity95.5 dB +11.3

Eighteen Sound12NCX910BE

No current price

Fs57 Hz +200%

Qts0.30 −6%

Vas58 L −27%

BL18.1 T·m –

Xmax6.9 mm −54%

Sensitivity97.4 dB +13.2

Search similar

Tune the match

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

Qts

Qes

Vas

Xmax

Reviews

How reviews work

5.0 out of 5

from 7 ratings at 1 shop

SoundImports5.0 out of 57 ratings · Checked 26 Oct 2026
Read reviews on SoundImports

Each shop collects its own ratings. Bits shows them as published and doesn't verify them.

Where to buy

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

Watch price

Shop	Price	Stock	Link
Willys-Hifi Checked 26 Oct 2026 · 4 Ω · Source: ex VAT · 20%	£246.52, the lowest price	Stock not listed	Visit shop at Willys-Hifi
Lean Audio Checked 26 Oct 2026 · 4 Ω · Source: inc VAT · 20%	£181.53	Back order	Visit shop at Lean Audio
Lautsprechershop Checked 26 Oct 2026 · Ships from Germany · 4 Ω · Source: inc VAT · 19% Import VAT and duty may apply	£192.22	Special order	Visit shop at Lautsprechershop
SoundImports Checked 26 Oct 2026 · Ships from Netherlands · 4 Ω · Source: inc VAT Import VAT and duty may apply	£217.66	Back order	Visit shop at SoundImports
RumoH Checked 26 Oct 2026 · Ships from Netherlands · 4 Ω · Source: inc VAT Import VAT and duty may apply	£226.82	Stock not listed	Visit shop at RumoH

Best price over time

Tracked since 1 Apr

Recent changes

19 OctWillys-Hifi£246.85 → £246.52Down 0.1% from £246.85
1 OctWillys-Hifi£252.95 → £246.85Down 2.4% from £252.95
30 SepWillys-Hifi£251.95 → £252.95Up 0.4% from £251.95

bits00 AUDIO

12-inch LF driver · SB34 series · 76 mm voice coil · 300 W

SB Acoustics SB34SWPL76-4 4Ω

4 Ω

7 ratings at 1 shop

£246.52

0.1%

Willys-Hifi · All 6 offers

Open in 00 Simulator

Fs: 19Hz
Xmax: 15mm
SPL: 84dB
Pe: 300W
BL: 18.3T·m
Vd: 687cm³
Qts: 0.32
Vas: 79L

See all 21 specs

Curve provenanceInspect 3 traces

These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works

30 degrees
Frequency response
Trace datasheet-response-trace-poc/v1
240 plotted pointsMedium confidence1,394 selected pixels of 2,921
Manufacturer datasheet, page 1
60 degrees
Frequency response
Trace datasheet-response-trace-poc/v1
225 plotted pointsMedium confidence1,208 selected pixels of 2,538
Manufacturer datasheet, page 1
impedance
Impedance response
Trace datasheet-response-trace-poc/v1
240 plotted pointsMedium confidence2,001 selected pixels of 6,151
Manufacturer datasheet, page 1

Published graphs

Specifications

Published by SB Acoustics

Manufacturer page

Datasheet PDF

The published T/S values agree with each other

Thiele/Small

Fs: 19Hz
Qts: 0.32
Qes: 0.33
Qms: 7.7
Vas: 79L
Re: 3.5Ω
Le: 5.30mH

Motor and cone

BL: 18.3T·m
Sd: 458cm²
Mms: 264g
Xmax: 15mm
Vd †: 687cm³
Voice coil: 76mm
Flux density: 0.62T

Power and response

Sensitivity †: 84.2dB
Manufacturer sensitivity: 85dB
Power: 300W
Impedance: 4Ω
EBP †: 58 · Sealed or vented

Size and mounting

Weight: 7.7kg

Other published values

Cms: 0.27mm/N

† Calculated by bits from the published values

What this validation status means

Everything else SB Acoustics lists

LF · Primary · 12″

BL: 18.3T·m
Fs: 19Hz
Le: 5.30mH
Re: 3.5Ω
Sd: 458cm²
Cms: 0.27mm/N
Mms: 264g
Qes: 0.33
Qms: 7.7
Qts: 0.32
SPL: 84.2dB
Vas: 79L
Xmax: 15mm
Power: 300W
Impedance: 4Ω
Flux density: 0.62T
Sensitivity: 85dB
Calculated sensitivity †: 84.2dB
Manufacturer sensitivity: 85dB
Voice coil: 76mm
Weight: 7.7kg

Compare

Same-size drivers, compared with the SB34SWPL76-4. Clear differences are green when better and red when worse.

This driverSB34SWPL76-4

Best price

£200.87

19 Hz

Qts

0.32

Vas

79 L

18.3 T·m

Xmax

15 mm

Sensitivity

84.2 dB

Power

300 W

B&C12CL64

£79.00 · 61% less

Fs52 Hz +174%

Qts0.30 −6%

Vas64 L −19%

BL17.5 T·m −4%

Xmax4.5 mm −70%

Sensitivity96.5 dB +12.3

CelestionTF1225E

£99.00 · 51% less

Fs53 Hz +177%

Qts0.33 +4%

Vas67.7 L −14%

BL17.7 T·m −3%

Xmax5.3 mm −65%

Sensitivity96.3 dB +12.1

B&C12HPL64

£132.00 · 34% less

Fs52 Hz +174%

Qts0.32 –

Vas85 L +8%

BL14.9 T·m −19%

Xmax4 mm −73%

Sensitivity97.4 dB +13.2

Beyma12MC500

£150.88 · 25% less

Fs57 Hz +200%

Qts0.34 +6%

Vas57 L −28%

BL18.3 T·m –

Xmax8 mm −47%

Sensitivity96.8 dB +12.6

Beyma12G40

£153.72 · 23% less

Fs44 Hz +132%

Qts0.30 −6%

Vas81 L –

BL18.4 T·m –

Xmax7 mm −53%

Sensitivity95.6 dB +11.4

REDCATT12NPM

£167.38 · 17% less

Fs49 Hz +158%

Qts0.31 −3%

Vas63.6 L −19%

BL17.3 T·m −5%

Xmax4.0 mm −73%

Sensitivity95.7 dB +11.5

EminenceKAPPALITE 3012HO

£187.01 · 7% less

Fs52 Hz +174%

Qts0.32 –

Vas81.1 L –

BL15.9 T·m −13%

Xmax6.2 mm −59%

Sensitivity97.4 dB +13.2

CIARE12.00SW

£199.00 · Same price

Fs29 Hz +53%

Qts0.29 −9%

Vas55 L −30%

BL19.5 T·m +7%

Xmax13.5 mm −10%

Sensitivity88.1 dB +3.9

CelestionFTR12-4080DL

£200.12 · Same price

Fs29 Hz +52%

Qts0.30 −5%

Vas68.6 L −13%

BL24.1 T·m +31%

Xmax13.6 mm −9%

Sensitivity88.8 dB +4.6

B&C12FG100

£227.46 · 13% more

Fs34 Hz +79%

Qts0.32 –

Vas53 L −33%

BL17.2 T·m −6%

Xmax10.3 mm −31%

Sensitivity89.9 dB +5.7

Dayton AudioRSS315HO-4

£274.72 · 37% more

Fs26 Hz +38%

Qts0.31 −3%

Vas53.7 L −32%

BL20 T·m +9%

Xmax12.3 mm −18%

Sensitivity86.7 dB +2.5

BMS12N630

£283.85 · 41% more

Fs29 Hz +51%

Qts0.33 +3%

Vas85.5 L +8%

BL19.8 T·m +8%

Xmax8 mm −47%

Sensitivity89.6 dB +5.4

Eighteen Sound12NCX910

£436.54 · 117% more

Fs57 Hz +200%

Qts0.30 −6%

Vas58 L −27%

BL18.1 T·m –

Xmax6.9 mm −54%

Sensitivity97.4 dB +13.2

Eighteen Sound12NCX910N

£478.98 · 138% more

Fs57 Hz +200%

Qts0.30 −6%

Vas58 L −27%

BL18.1 T·m –

Xmax6.9 mm −54%

Sensitivity97.4 dB +13.2

Oberton12NSW600

No current price

Fs42 Hz +121%

Qts0.32 –

Vas62.3 L −21%

BL20.2 T·m +10%

Xmax14.3 mm −5%

Sensitivity93.5 dB +9.3

CIARECSD124-22

No current price

Fs34 Hz +79%

Qts0.30 −6%

Vas54 L −32%

BL18.2 T·m –

Xmax13 mm −13%

Sensitivity90.2 dB +6

PRV Audio12MB2000FT

No current price

Fs56 Hz +193%

Qts0.32 –

Vas66.9 L −15%

BL17.7 T·m −3%

Xmax6 mm −60%

Sensitivity97.5 dB +13.3

Eighteen Sound12NTLX3500

No current price

Fs39 Hz +105%

Qts0.33 +3%

Vas79.6 L –

BL17.1 T·m −7%

Xmax7.9 mm −47%

Sensitivity93.3 dB +9.1

JensenBP12250-8

No current price

Fs50 Hz +164%

Qts0.32 –

Vas73.5 L −7%

BL16.4 T·m −10%

Xmax3.1 mm −79%

Sensitivity96.4 dB +12.2

Eighteen Sound12MB606

No current price

Fs50 Hz +163%

Qts0.32 –

Vas84 L +6%

BL16 T·m −13%

Xmax6.5 mm −57%

Sensitivity96.9 dB +12.7

CIARE12.75W1

No current price

Fs49 Hz +158%

Qts0.33 +3%

Vas67 L −15%

BL18.9 T·m +3%

Xmax6 mm −60%

Sensitivity95.7 dB +11.5

FaneCOLOSSUS 12MBH

No current price

Fs48 Hz +153%

Qts0.34 +5%

Vas75 L −5%

BL17.5 T·m −4%

Xmax6 mm −60%

Sensitivity95.8 dB +11.6

Eighteen Sound12W600

No current price

Fs50 Hz +163%

Qts0.30 −6%

Vas73 L −8%

BL17.3 T·m −5%

Xmax6.5 mm −57%

Sensitivity96.6 dB +12.4

PRV Audio12MB2000FT-NDY

No current price

Fs55 Hz +190%

Qts0.30 −6%

Vas71.5 L −9%

BL17.7 T·m −3%

Xmax6 mm −60%

Sensitivity97.9 dB +13.7

MonacorSP-12A/302PA

No current price

Fs50 Hz +163%

Qts0.34 +6%

Vas77 L –

BL17.0 T·m −7%

Xmax5 mm −67%

Sensitivity96.4 dB +12.2

Sica12 C 2.5 CP

No current price

Fs51 Hz +166%

Qts0.30 −6%

Vas84.5 L +7%

BL17.3 T·m −5%

Xmax5 mm −67%

Sensitivity97.5 dB +13.3

CelestionCF1230F

No current price

Fs57 Hz +197%

Qts0.32 –

Vas49.6 L −37%

BL18.3 T·m –

Xmax7.5 mm −50%

Sensitivity96.2 dB +12

Sica12 S 3 PL

No current price

Fs42 Hz +121%

Qts0.34 +6%

Vas76.9 L –

BL16.8 T·m −8%

Xmax7 mm −53%

Sensitivity94 dB +9.8

B&C12FL76

No current price

Fs50 Hz +163%

Qts0.30 −6%

Vas57 L −28%

BL18.7 T·m –

Xmax6 mm −60%

Sensitivity95.5 dB +11.3

Eighteen Sound12NCX910BE

No current price

Fs57 Hz +200%

Qts0.30 −6%

Vas58 L −27%

BL18.1 T·m –

Xmax6.9 mm −54%

Sensitivity97.4 dB +13.2

Search similar

Tune the match

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

Qts

Qes

Vas

Xmax

Reviews

How reviews work

5.0 out of 5

from 7 ratings at 1 shop

SoundImports5.0 out of 57 ratings · Checked 26 Oct 2026
Read reviews on SoundImports

Each shop collects its own ratings. Bits shows them as published and doesn't verify them.

Where to buy

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

Watch price

Shop	Price	Stock	Link
Willys-Hifi Checked 26 Oct 2026 · 4 Ω · Source: ex VAT · 20%	£246.52, the lowest price	Stock not listed	Visit shop at Willys-Hifi
Lean Audio Checked 26 Oct 2026 · 4 Ω · Source: inc VAT · 20%	£181.53	Back order	Visit shop at Lean Audio
Lautsprechershop Checked 26 Oct 2026 · Ships from Germany · 4 Ω · Source: inc VAT · 19% Import VAT and duty may apply	£192.22	Special order	Visit shop at Lautsprechershop
SoundImports Checked 26 Oct 2026 · Ships from Netherlands · 4 Ω · Source: inc VAT Import VAT and duty may apply	£217.66	Back order	Visit shop at SoundImports
RumoH Checked 26 Oct 2026 · Ships from Netherlands · 4 Ω · Source: inc VAT Import VAT and duty may apply	£226.82	Stock not listed	Visit shop at RumoH

Best price over time

Tracked since 1 Apr

Recent changes

19 OctWillys-Hifi£246.85 → £246.52Down 0.1% from £246.85
1 OctWillys-Hifi£252.95 → £246.85Down 2.4% from £252.95
30 SepWillys-Hifi£251.95 → £252.95Up 0.4% from £251.95