4-inch LF driver · PTT series · 30 mm voice coil · 60 W

Purifi PTT4.0X04-NAC-03 4Ω

Name: Purifi PTT4.0X04-NAC-03 4 Ohm
Brand: Purifi
SKU: PTT4.0X04-NAC-03

4 Ω

No price for delivery to the UK

All 1 offer

Open in 00 Simulator

Fs: 40Hz
Xmax: 8.8mm
SPL: 82dB
Pe: 60W
BL: 6.1T·m
Vd: 50cm³
Qts: 0.31
Vas: 6L

See all 28 specs

Specifications

Published by Purifi

Manufacturer page

Datasheet PDF

Purifi PTT4.0X04-NAC-03 is a 4-inch 4 ohm LF driver rated at 60 W RMS. The validated T/S data includes Fs 40 Hz, Qts 0.31, Vas 5.5 L, Xmax 8.8 mm, sensitivity 82.2 dB, plus 50 cm³ Vd and 118 EBP. bits tracks vendor pricing, datasheet links, simulator import data, and similar drivers from the same loudspeaker database.

The published T/S values agree with each other

Thiele/Small

Fs: 40Hz
Qts: 0.31
Qes: 0.34
Qms: 3.8
Vas: 5.5L
Re: 3.8Ω
Le: 0.38mH

Motor and cone

BL: 6.1T·m
Sd: 57cm²
Mms: 13g
Xmax: 8.8mm
Vd †: 50cm³
Voice coil: 30mm

Power and response

Sensitivity †: 82.2dB
Manufacturer sensitivity: 83.9dB
Power: 60W
Impedance: 4Ω
Min. impedance: 4.4Ω
EBP †: 118 · Leans vented

Size and mounting

Diameter: 125mm
Cutout: 101mm
Bolt circle: 115mm
Weight: 1.3kg

Other published values

Cms: 1.22mm/N
Rms: 0.87kg/s
Xmech: 13.7
Power Peak: 200

Other dimensions

Mounting Depth: 73.5

Sensitivity shows 82.2 dB, calculated from the T/S values. Purifi publishes 83.9 dB, 1.7 dB apart.

† Calculated by bits from the published values

What this validation status means

Everything else Purifi lists

LF · Primary · 4″

BL: 6.1T·m
Fs: 40Hz
Le: 0.38mH
Re: 3.8Ω
Sd: 57cm²
Cms: 1.22mm/N
Mms: 13g
Qes: 0.34
Qms: 3.8
Qts: 0.31
Rms: 0.87kg/s
SPL: 82.2dB
Vas: 5.5L
Xmax: 8.8mm
Xmech: 13.7
Power: 60W
Impedance: 4Ω
Power Peak: 200
Sensitivity: 83.9dB
Calculated sensitivity †: 82.2dB
Manufacturer sensitivity: 83.9dB
Min. impedance: 4.4Ω
Voice coil: 30mm
Weight: 1.3kg
Diameter: 125mm
Mounting Depth: 73.5
Cutout: 101mm
Bolt circle: 115mm

Compare

Same-size drivers, compared with the PTT4.0X04-NAC-03. Clear differences are green when better and red when worse.

This driverPTT4.0X04-NAC-03

Best price

–

40 Hz

Qts

0.31

Vas

5.5 L

6.1 T·m

Xmax

8.8 mm

Sensitivity

82.2 dB

Power

60 W

FaitalPRO5FE100

£21.36

Fs65 Hz +63%

Qts0.33 +6%

Vas6.1 L +11%

BL6 T·m –

Xmax5.2 mm −41%

Sensitivity88.8 dB +6.6

SB AcousticsSB12PAC25-4

£23.67

Fs53 Hz +31%

Qts0.31 –

Vas5.3 L −4%

BL4.3 T·m −29%

Xmax5 mm −43%

Sensitivity85.7 dB +3.5

SB AcousticsSB12PACR25-4

£23.67

Fs53 Hz +31%

Qts0.31 –

Vas5.3 L −4%

BL4.3 T·m −29%

Xmax5 mm −43%

Sensitivity85.7 dB +3.5

CIAREHW100

£27.63

Fs70 Hz +75%

Qts0.31 –

Vas4.3 L −22%

BL5.6 T·m −8%

Xmax4.3 mm −51%

Sensitivity88 dB +5.8

Sica5 F 1.5 CP

£38.51

Fs61 Hz +53%

Qts0.30 −3%

Vas6.8 L +24%

BL7.6 T·m +24%

Xmax3.5 mm −60%

Sensitivity88.7 dB +6.5

SB AcousticsSB12MNRX2-25-4

£47.06

Fs64 Hz +59%

Qts0.32 +3%

Vas5.3 L −4%

BL3.9 T·m −36%

Xmax2.2 mm −75%

Sensitivity87.9 dB +5.7

Dayton AudioCF120-4

£52.29

Fs53 Hz +33%

Qts0.28 −10%

Vas4.9 L −11%

BL4.9 T·m −19%

Xmax3.5 mm −60%

Sensitivity85.6 dB +3.4

Tang BandW4-2142

£57.77

Fs60 Hz +50%

Qts0.33 +6%

Vas6.4 L +17%

BL5.4 T·m −11%

Xmax2.4 mm −73%

Sensitivity87.5 dB +5.3

SB AcousticsSB12CACS25-4

£58.31

Fs51 Hz +28%

Qts0.31 –

Vas5.7 L +4%

BL4.3 T·m −30%

Xmax5 mm −43%

Sensitivity85.6 dB +3.4

Tang BandW4-1337SDF

£71.17

Fs70 Hz +75%

Qts0.34 +10%

Vas5.6 L –

BL5.3 T·m −13%

Xmax2.5 mm −72%

Sensitivity88.9 dB +6.7

SEASH1152-08 CA12RCY

£79.46

Fs57 Hz +43%

Qts0.31 –

Vas5 L −9%

BL6.3 T·m +4%

Xmax3 mm −66%

Sensitivity86.1 dB +3.9

MarkaudioPLUVIA 11

£87.50

Fs39 Hz –

Qts0.29 −5%

Vas24.8 L +350%

BL6.6 T·m +7%

Xmax7 mm −20%

Sensitivity88.3 dB +6.1

SB AcousticsMR13P-8

£135.77

Fs45 Hz +13%

Qts0.31 –

Vas12.5 L +127%

BL6.1 T·m –

Xmax3 mm −66%

Sensitivity87.4 dB +5.2

SB AcousticsMW13PNW-8

£139.69

Fs41 Hz –

Qts0.31 –

Vas15 L +173%

BL5.7 T·m −7%

Xmax5 mm −43%

Sensitivity87 dB +4.8

Tang BandW4-2315

£175.00

Fs65 Hz +63%

Qts0.29 −6%

Vas5.0 L −10%

BL6.2 T·m –

Xmax2.8 mm −68%

Sensitivity88.5 dB +6.3

SB AcousticsMW13TX-8

£225.24

Fs40 Hz –

Qts0.32 +3%

Vas14.8 L +169%

BL5.7 T·m −7%

Xmax5 mm −43%

Sensitivity86.5 dB +4.3

PurifiPTT4.0X04-NFC-01

£251.15

Fs38 Hz −5%

Qts0.30 −3%

Vas6.4 L +16%

BL6 T·m –

Xmax8.8 mm –

Sensitivity82.4 dB –

PurifiPTT4.0M08-NAC-03

£251.15

Fs50 Hz +25%

Qts0.32 +3%

Vas4.9 L −11%

BL7 T·m +15%

Xmax2.9 mm −67%

Sensitivity84.6 dB +2.4

PurifiPTT4.0X08-NAC-03

£251.15

Fs43 Hz +8%

Qts0.39 +26%

Vas5.3 L −4%

BL7 T·m +15%

Xmax8.8 mm –

Sensitivity81.9 dB –

Scanspeak12MU/8731T00

£263.71

Fs66 Hz +65%

Qts0.29 −6%

Vas5.8 L +5%

BL6.1 T·m –

Xmax3.4 mm −61%

Sensitivity89.3 dB +7.1

Tang BandW4-657D

No current price

Fs70 Hz +75%

Qts0.32 +3%

Vas5.6 L –

BL5.6 T·m −8%

Xmax3.3 mm −63%

Sensitivity89.4 dB +7.2

PurifiPTT4.0M08-NFC-01

No current price

Fs48 Hz +20%

Qts0.31 –

Vas5.3 L −4%

BL7 T·m +15%

Xmax2.9 mm −67%

Sensitivity84.5 dB +2.3

PurifiPTT4.0X08-NFC-01

No current price

Fs41 Hz –

Qts0.37 +19%

Vas5.7 L +4%

BL6.9 T·m +13%

Xmax8.8 mm –

Sensitivity81.8 dB –

CIAREHWL100

No current price

Fs70 Hz +75%

Qts0.31 –

Vas4.3 L −22%

BL5.6 T·m −8%

Xmax4.3 mm −51%

Sensitivity88 dB +5.8

PurifiPTT4.0M04-NAC-03

No current price

Fs48 Hz +20%

Qts0.28 −10%

Vas5 L −9%

BL5.9 T·m −3%

Xmax2.9 mm −67%

Sensitivity84.7 dB +2.5

MarkaudioALPAIR 10.3

No current price

Fs38 Hz −4%

Qts0.32 –

Vas26.3 L +379%

BL5.8 T·m −5%

Xmax7.5 mm −15%

Sensitivity87.9 dB +5.7

Tang BandW4-1798S

No current price

Fs60 Hz +50%

Qts0.30 −3%

Vas7.4 L +35%

BL5.8 T·m −6%

Xmax3 mm −66%

Sensitivity88.4 dB +6.2

Tang BandW4-1749S

No current price

Fs60 Hz +50%

Qts0.34 +10%

Vas6.3 L +15%

BL5.8 T·m −5%

Xmax0.9 mm −90%

Sensitivity87.5 dB +5.3

Tang BandW4-992SD

No current price

Fs55 Hz +38%

Qts0.35 +13%

Vas5.7 L +4%

BL6.4 T·m +5%

Xmax3.5 mm −60%

Sensitivity85.8 dB +3.6

Tang BandW4-937SF

No current price

Fs65 Hz +63%

Qts0.26 −16%

Vas4.9 L −12%

BL6.7 T·m +10%

Xmax4.5 mm −49%

Sensitivity88.1 dB +5.9

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
SoundImports Checked 24 Oct 2026 · Ships from Netherlands · Source: inc VAT Import VAT and duty may apply	£251.15		Back order	Visit shop at SoundImports

bits00 AUDIO

4-inch LF driver · PTT series · 30 mm voice coil · 60 W

Purifi PTT4.0X04-NAC-03 4Ω

4 Ω

No price for delivery to the UK

All 1 offer

Open in 00 Simulator

Fs: 40Hz
Xmax: 8.8mm
SPL: 82dB
Pe: 60W
BL: 6.1T·m
Vd: 50cm³
Qts: 0.31
Vas: 6L

See all 28 specs

Specifications

Published by Purifi

Manufacturer page

Datasheet PDF

The published T/S values agree with each other

Thiele/Small

Fs: 40Hz
Qts: 0.31
Qes: 0.34
Qms: 3.8
Vas: 5.5L
Re: 3.8Ω
Le: 0.38mH

Motor and cone

BL: 6.1T·m
Sd: 57cm²
Mms: 13g
Xmax: 8.8mm
Vd †: 50cm³
Voice coil: 30mm

Power and response

Sensitivity †: 82.2dB
Manufacturer sensitivity: 83.9dB
Power: 60W
Impedance: 4Ω
Min. impedance: 4.4Ω
EBP †: 118 · Leans vented

Size and mounting

Diameter: 125mm
Cutout: 101mm
Bolt circle: 115mm
Weight: 1.3kg

Other published values

Cms: 1.22mm/N
Rms: 0.87kg/s
Xmech: 13.7
Power Peak: 200

Other dimensions

Mounting Depth: 73.5

Sensitivity shows 82.2 dB, calculated from the T/S values. Purifi publishes 83.9 dB, 1.7 dB apart.

† Calculated by bits from the published values

What this validation status means

Everything else Purifi lists

LF · Primary · 4″

BL: 6.1T·m
Fs: 40Hz
Le: 0.38mH
Re: 3.8Ω
Sd: 57cm²
Cms: 1.22mm/N
Mms: 13g
Qes: 0.34
Qms: 3.8
Qts: 0.31
Rms: 0.87kg/s
SPL: 82.2dB
Vas: 5.5L
Xmax: 8.8mm
Xmech: 13.7
Power: 60W
Impedance: 4Ω
Power Peak: 200
Sensitivity: 83.9dB
Calculated sensitivity †: 82.2dB
Manufacturer sensitivity: 83.9dB
Min. impedance: 4.4Ω
Voice coil: 30mm
Weight: 1.3kg
Diameter: 125mm
Mounting Depth: 73.5
Cutout: 101mm
Bolt circle: 115mm

Compare

Same-size drivers, compared with the PTT4.0X04-NAC-03. Clear differences are green when better and red when worse.

This driverPTT4.0X04-NAC-03

Best price

–

40 Hz

Qts

0.31

Vas

5.5 L

6.1 T·m

Xmax

8.8 mm

Sensitivity

82.2 dB

Power

60 W

FaitalPRO5FE100

£21.36

Fs65 Hz +63%

Qts0.33 +6%

Vas6.1 L +11%

BL6 T·m –

Xmax5.2 mm −41%

Sensitivity88.8 dB +6.6

SB AcousticsSB12PAC25-4

£23.67

Fs53 Hz +31%

Qts0.31 –

Vas5.3 L −4%

BL4.3 T·m −29%

Xmax5 mm −43%

Sensitivity85.7 dB +3.5

SB AcousticsSB12PACR25-4

£23.67

Fs53 Hz +31%

Qts0.31 –

Vas5.3 L −4%

BL4.3 T·m −29%

Xmax5 mm −43%

Sensitivity85.7 dB +3.5

CIAREHW100

£27.63

Fs70 Hz +75%

Qts0.31 –

Vas4.3 L −22%

BL5.6 T·m −8%

Xmax4.3 mm −51%

Sensitivity88 dB +5.8

Sica5 F 1.5 CP

£38.51

Fs61 Hz +53%

Qts0.30 −3%

Vas6.8 L +24%

BL7.6 T·m +24%

Xmax3.5 mm −60%

Sensitivity88.7 dB +6.5

SB AcousticsSB12MNRX2-25-4

£47.06

Fs64 Hz +59%

Qts0.32 +3%

Vas5.3 L −4%

BL3.9 T·m −36%

Xmax2.2 mm −75%

Sensitivity87.9 dB +5.7

Dayton AudioCF120-4

£52.29

Fs53 Hz +33%

Qts0.28 −10%

Vas4.9 L −11%

BL4.9 T·m −19%

Xmax3.5 mm −60%

Sensitivity85.6 dB +3.4

Tang BandW4-2142

£57.77

Fs60 Hz +50%

Qts0.33 +6%

Vas6.4 L +17%

BL5.4 T·m −11%

Xmax2.4 mm −73%

Sensitivity87.5 dB +5.3

SB AcousticsSB12CACS25-4

£58.31

Fs51 Hz +28%

Qts0.31 –

Vas5.7 L +4%

BL4.3 T·m −30%

Xmax5 mm −43%

Sensitivity85.6 dB +3.4

Tang BandW4-1337SDF

£71.17

Fs70 Hz +75%

Qts0.34 +10%

Vas5.6 L –

BL5.3 T·m −13%

Xmax2.5 mm −72%

Sensitivity88.9 dB +6.7

SEASH1152-08 CA12RCY

£79.46

Fs57 Hz +43%

Qts0.31 –

Vas5 L −9%

BL6.3 T·m +4%

Xmax3 mm −66%

Sensitivity86.1 dB +3.9

MarkaudioPLUVIA 11

£87.50

Fs39 Hz –

Qts0.29 −5%

Vas24.8 L +350%

BL6.6 T·m +7%

Xmax7 mm −20%

Sensitivity88.3 dB +6.1

SB AcousticsMR13P-8

£135.77

Fs45 Hz +13%

Qts0.31 –

Vas12.5 L +127%

BL6.1 T·m –

Xmax3 mm −66%

Sensitivity87.4 dB +5.2

SB AcousticsMW13PNW-8

£139.69

Fs41 Hz –

Qts0.31 –

Vas15 L +173%

BL5.7 T·m −7%

Xmax5 mm −43%

Sensitivity87 dB +4.8

Tang BandW4-2315

£175.00

Fs65 Hz +63%

Qts0.29 −6%

Vas5.0 L −10%

BL6.2 T·m –

Xmax2.8 mm −68%

Sensitivity88.5 dB +6.3

SB AcousticsMW13TX-8

£225.24

Fs40 Hz –

Qts0.32 +3%

Vas14.8 L +169%

BL5.7 T·m −7%

Xmax5 mm −43%

Sensitivity86.5 dB +4.3

PurifiPTT4.0X04-NFC-01

£251.15

Fs38 Hz −5%

Qts0.30 −3%

Vas6.4 L +16%

BL6 T·m –

Xmax8.8 mm –

Sensitivity82.4 dB –

PurifiPTT4.0M08-NAC-03

£251.15

Fs50 Hz +25%

Qts0.32 +3%

Vas4.9 L −11%

BL7 T·m +15%

Xmax2.9 mm −67%

Sensitivity84.6 dB +2.4

PurifiPTT4.0X08-NAC-03

£251.15

Fs43 Hz +8%

Qts0.39 +26%

Vas5.3 L −4%

BL7 T·m +15%

Xmax8.8 mm –

Sensitivity81.9 dB –

Scanspeak12MU/8731T00

£263.71

Fs66 Hz +65%

Qts0.29 −6%

Vas5.8 L +5%

BL6.1 T·m –

Xmax3.4 mm −61%

Sensitivity89.3 dB +7.1

Tang BandW4-657D

No current price

Fs70 Hz +75%

Qts0.32 +3%

Vas5.6 L –

BL5.6 T·m −8%

Xmax3.3 mm −63%

Sensitivity89.4 dB +7.2

PurifiPTT4.0M08-NFC-01

No current price

Fs48 Hz +20%

Qts0.31 –

Vas5.3 L −4%

BL7 T·m +15%

Xmax2.9 mm −67%

Sensitivity84.5 dB +2.3

PurifiPTT4.0X08-NFC-01

No current price

Fs41 Hz –

Qts0.37 +19%

Vas5.7 L +4%

BL6.9 T·m +13%

Xmax8.8 mm –

Sensitivity81.8 dB –

CIAREHWL100

No current price

Fs70 Hz +75%

Qts0.31 –

Vas4.3 L −22%

BL5.6 T·m −8%

Xmax4.3 mm −51%

Sensitivity88 dB +5.8

PurifiPTT4.0M04-NAC-03

No current price

Fs48 Hz +20%

Qts0.28 −10%

Vas5 L −9%

BL5.9 T·m −3%

Xmax2.9 mm −67%

Sensitivity84.7 dB +2.5

MarkaudioALPAIR 10.3

No current price

Fs38 Hz −4%

Qts0.32 –

Vas26.3 L +379%

BL5.8 T·m −5%

Xmax7.5 mm −15%

Sensitivity87.9 dB +5.7

Tang BandW4-1798S

No current price

Fs60 Hz +50%

Qts0.30 −3%

Vas7.4 L +35%

BL5.8 T·m −6%

Xmax3 mm −66%

Sensitivity88.4 dB +6.2

Tang BandW4-1749S

No current price

Fs60 Hz +50%

Qts0.34 +10%

Vas6.3 L +15%

BL5.8 T·m −5%

Xmax0.9 mm −90%

Sensitivity87.5 dB +5.3

Tang BandW4-992SD

No current price

Fs55 Hz +38%

Qts0.35 +13%

Vas5.7 L +4%

BL6.4 T·m +5%

Xmax3.5 mm −60%

Sensitivity85.8 dB +3.6

Tang BandW4-937SF

No current price

Fs65 Hz +63%

Qts0.26 −16%

Vas4.9 L −12%

BL6.7 T·m +10%

Xmax4.5 mm −49%

Sensitivity88.1 dB +5.9

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
SoundImports Checked 24 Oct 2026 · Ships from Netherlands · Source: inc VAT Import VAT and duty may apply	£251.15		Back order	Visit shop at SoundImports