18-inch LF driver · CF series · 100 mm voice coil · 1,200 W

Monacor CF1840JD/4 4Ω

Name: Monacor CF1840JD/4 4 Ohm
Brand: Monacor
SKU: CF1840JD/4
Availability: InStock

4 Ω · 30–2500 Hz

£283.85

LTT · Ships from Germany · All 1 offer

Open in 00 Simulator

Fs: 37Hz
Xmax: 12.5mm
SPL: 95dB
Pe: 1200W
BL: 24.8T·m
Vd: 1418cm³
Qts: 0.40
Vas: 155L

See all 26 specs

Specifications

Published by Monacor

Manufacturer page

Datasheet PDF

Monacor CF1840JD/4 is an 18-inch 4 ohm LF driver rated at 1200 W RMS. The validated T/S data includes Fs 37 Hz, Qts 0.40, Vas 155 L, Xmax 12.5 mm, sensitivity 94.6 dB, plus 1418 cm³ Vd and 85 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 £283.85.

The published T/S values agree with each other

Thiele/Small

Fs: 37Hz
Qts: 0.40
Qes: 0.44
Qms: 4.4
Vas: 155L
Re: 5.3Ω
Le: 1.16mH

Motor and cone

BL: 24.8T·m
Sd: 1134cm²
Mms: 217g
Xmax: 12.5mm
Vd †: 1418cm³
Voice coil: 100mm

Power and response

Sensitivity †: 94.6dB
Manufacturer sensitivity: 97dB
Power: 1200W
Impedance: 4Ω
Range: 30–2500Hz
EBP †: 85 · Sealed or vented

Size and mounting

Diameter: 460mm
Cutout: 414mm
Depth: 220mm
Weight: 11.8kg

Other published values

Cms: 0.09mm/N
Power Peak: 2400

Other dimensions

Mounting Depth: 220

Sensitivity shows 94.6 dB, calculated from the T/S values. Monacor publishes 97.0 dB, 2.4 dB apart.

† Calculated by bits from the published values

What this validation status means

Everything else Monacor lists

LF · Primary · 18″

BL: 24.8T·m
Fs: 37Hz
Le: 1.16mH
Re: 5.3Ω
Sd: 1134cm²
Cms: 0.09mm/N
Mms: 217g
Qes: 0.44
Qms: 4.4
Qts: 0.40
SPL: 94.6dB
Vas: 155L
Xmax: 12.5mm
Power: 1200W
Impedance: 4Ω
Power Peak: 2400
Sensitivity: 97dB
Low limit: 30Hz
Calculated sensitivity †: 94.6dB
High limit: 2500Hz
Manufacturer sensitivity: 97dB
Voice coil: 100mm
Weight: 11.8kg
Diameter: 460mm
Depth: 220mm
Mounting Depth: 220
Cutout: 414mm

Compare

Same-size drivers, compared with the CF1840JD/4. Clear differences are green when better and red when worse.

This driverCF1840JD/4

Best price

£283.85

37 Hz

Qts

0.40

Vas

155 L

24.8 T·m

Xmax

12.5 mm

Sensitivity

94.6 dB

Power

1200 W

Beyma18LEX1000FE

£225.00 · 21% less

Fs34 Hz −8%

Qts0.38 −4%

Vas250 L +61%

BL23.8 T·m −4%

Xmax11 mm −12%

Sensitivity96 dB +1.4

CelestionFTR18-4080HDX

£237.20 · 16% less

Fs39 Hz +6%

Qts0.43 +8%

Vas174.9 L +13%

BL21.3 T·m −14%

Xmax10.1 mm −19%

Sensitivity95.6 dB +1

CelestionCF1840JD

£239.00 · 16% less

Fs37 Hz –

Qts0.40 –

Vas155 L –

BL24.8 T·m –

Xmax12.5 mm –

Sensitivity94.6 dB –

FaitalPRO18HP1060

£245.81 · 13% less

Fs35 Hz −5%

Qts0.37 −7%

Vas200.3 L +29%

BL24.8 T·m –

Xmax12.4 mm –

Sensitivity95.6 dB +1

Beyma18LEX1000ND

£249.54 · 12% less

Fs34 Hz −8%

Qts0.39 –

Vas260 L +68%

BL22 T·m −11%

Xmax11 mm −12%

Sensitivity95.9 dB +1.3

Beyma18PWB1000FE

£255.00 · 10% less

Fs27 Hz −27%

Qts0.38 −4%

Vas317 L +105%

BL25 T·m –

Xmax12.5 mm –

Sensitivity94 dB −0.6

Beyma18LEX1600FE

£277.00 · 2% less

Fs34 Hz −8%

Qts0.38 −4%

Vas188 L +21%

BL26.9 T·m +9%

Xmax13 mm +4%

Sensitivity94.7 dB –

B&C18NBX100

£278.92 · 2% less

Fs35 Hz −5%

Qts0.37 −7%

Vas192 L +24%

BL22 T·m −11%

Xmax10 mm −20%

Sensitivity95.3 dB +0.7

FaitalPRO18HP1030

£300.59 · 6% more

Fs35 Hz −5%

Qts0.32 −19%

Vas172.2 L +11%

BL21.7 T·m −12%

Xmax12.4 mm –

Sensitivity95.5 dB +0.9

SB AudienceROSSO-18SW1000D

£309.76 · 9% more

Fs35 Hz −5%

Qts0.46 +16%

Vas164.3 L +6%

BL25.8 T·m +4%

Xmax13.7 mm +9%

Sensitivity93.6 dB −1

B&C18SW100

£333.25 · 17% more

Fs36 Hz –

Qts0.36 −9%

Vas160 L +3%

BL22 T·m −11%

Xmax12.5 mm –

Sensitivity94.7 dB –

Eighteen Sound18TLW3000

£337.44 · 19% more

Fs32 Hz −14%

Qts0.35 −12%

Vas185 L +19%

BL20 T·m −19%

Xmax12 mm −4%

Sensitivity94.3 dB –

Sica18 PF 4

£355.82 · 25% more

Fs38 Hz –

Qts0.43 +8%

Vas147.3 L −5%

BL24.6 T·m –

Xmax8 mm −36%

Sensitivity94.4 dB –

SB AudienceNERO-18SW1900D

£393.49 · 39% more

Fs34 Hz −8%

Qts0.42 +6%

Vas157.9 L –

BL28.5 T·m +15%

Xmax17.5 mm +40%

Sensitivity93.6 dB −1

Beyma18LEX1600ND

£399.00 · 41% more

Fs33 Hz −11%

Qts0.43 +8%

Vas231 L +49%

BL24.5 T·m –

Xmax14.5 mm +16%

Sensitivity94.7 dB –

No photo

Precision DevicesPD.1845-2N

£422.00 · 49% more

Fs35 Hz −5%

Qts0.39 –

Vas157 L –

BL27 T·m +9%

Xmax18 mm +44%

Sensitivity94.3 dB –

FaitalPRO18XL1800

£425.00 · 50% more

Fs29 Hz −22%

Qts0.40 –

Vas215.5 L +39%

BL25.4 T·m –

Xmax20.2 mm +61%

Sensitivity93 dB −1.6

B&C18HTX100

£809.86 · 185% more

Fs44 Hz +19%

Qts0.32 −19%

Vas173 L +12%

BL26.3 T·m +6%

Xmax13 mm +4%

Sensitivity98.4 dB +3.8

CelestionFTR18-4080FDX

No current price

Fs37 Hz –

Qts0.41 +4%

Vas160.7 L +4%

BL25.1 T·m –

Xmax6 mm −52%

Sensitivity94.9 dB –

P.Audio18NT-100XB

No current price

Fs35 Hz −5%

Qts0.41 +3%

Vas171.3 L +11%

BL24.6 T·m –

Xmax7 mm −44%

Sensitivity94.4 dB –

B&C18RBX100

No current price

Fs42 Hz +14%

Qts0.40 –

Vas136 L −12%

BL22 T·m −11%

Xmax10 mm −20%

Sensitivity95.9 dB +1.3

P.AudioP-18N-V3

No current price

Fs35 Hz −5%

Qts0.40 –

Vas179.5 L +16%

BL24.1 T·m –

Xmax9 mm −28%

Sensitivity94.7 dB –

CelestionERPROX18

No current price

Fs35 Hz −6%

Qts0.38 −5%

Vas188.9 L +22%

BL24.4 T·m –

Xmax9.5 mm −24%

Sensitivity94.7 dB –

Dayton Audio18SW1200F-8

No current price

Fs32 Hz −14%

Qts0.40 –

Vas287.7 L +86%

BL24.4 T·m –

Xmax10.6 mm −15%

Sensitivity95.5 dB +0.9

Eighteen Sound18LW2500

No current price

Fs35 Hz −5%

Qts0.44 +11%

Vas135 L −13%

BL20 T·m −19%

Xmax14 mm +12%

Sensitivity93.1 dB −1.5

Sica18 S 4 PL

No current price

Fs36 Hz –

Qts0.39 –

Vas189 L +22%

BL23.5 T·m −5%

Xmax8 mm −36%

Sensitivity95.3 dB +0.7

BishopSoundBDP18/4

No current price

Fs39 Hz +5%

Qts0.40 –

Vas183.3 L +18%

BL17.1 T·m −31%

Xmax11.3 mm −10%

Sensitivity96.2 dB +1.6

FaneCOLOSSUS PRIME 18XS

No current price

Fs33 Hz −11%

Qts0.39 −3%

Vas257 L +66%

BL22.4 T·m −10%

Xmax12 mm −4%

Sensitivity95.6 dB +1

P.Audio18BM-1000S

No current price

Fs35 Hz −5%

Qts0.40 –

Vas212.1 L +37%

BL23.8 T·m −4%

Xmax8 mm −36%

Sensitivity95.3 dB +0.7

REDCATT18FIND-1

No current price

Fs36 Hz –

Qts0.42 +6%

Vas203.4 L +31%

BL23.6 T·m −5%

Xmax5.8 mm −53%

Sensitivity95.4 dB +0.8

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
LTT Checked 26 Oct 2026 · Ships from Germany · 4 Ω · Source: inc VAT Import VAT and duty may apply	£283.85, the lowest price		Stock not listed	Visit shop at LTT

Best price over time

Tracked since 28 Sep

bits00 AUDIO

18-inch LF driver · CF series · 100 mm voice coil · 1,200 W

Monacor CF1840JD/4 4Ω

4 Ω · 30–2500 Hz

£283.85

LTT · Ships from Germany · All 1 offer

Open in 00 Simulator

Fs: 37Hz
Xmax: 12.5mm
SPL: 95dB
Pe: 1200W
BL: 24.8T·m
Vd: 1418cm³
Qts: 0.40
Vas: 155L

See all 26 specs

Specifications

Published by Monacor

Manufacturer page

Datasheet PDF

The published T/S values agree with each other

Thiele/Small

Fs: 37Hz
Qts: 0.40
Qes: 0.44
Qms: 4.4
Vas: 155L
Re: 5.3Ω
Le: 1.16mH

Motor and cone

BL: 24.8T·m
Sd: 1134cm²
Mms: 217g
Xmax: 12.5mm
Vd †: 1418cm³
Voice coil: 100mm

Power and response

Sensitivity †: 94.6dB
Manufacturer sensitivity: 97dB
Power: 1200W
Impedance: 4Ω
Range: 30–2500Hz
EBP †: 85 · Sealed or vented

Size and mounting

Diameter: 460mm
Cutout: 414mm
Depth: 220mm
Weight: 11.8kg

Other published values

Cms: 0.09mm/N
Power Peak: 2400

Other dimensions

Mounting Depth: 220

Sensitivity shows 94.6 dB, calculated from the T/S values. Monacor publishes 97.0 dB, 2.4 dB apart.

† Calculated by bits from the published values

What this validation status means

Everything else Monacor lists

LF · Primary · 18″

BL: 24.8T·m
Fs: 37Hz
Le: 1.16mH
Re: 5.3Ω
Sd: 1134cm²
Cms: 0.09mm/N
Mms: 217g
Qes: 0.44
Qms: 4.4
Qts: 0.40
SPL: 94.6dB
Vas: 155L
Xmax: 12.5mm
Power: 1200W
Impedance: 4Ω
Power Peak: 2400
Sensitivity: 97dB
Low limit: 30Hz
Calculated sensitivity †: 94.6dB
High limit: 2500Hz
Manufacturer sensitivity: 97dB
Voice coil: 100mm
Weight: 11.8kg
Diameter: 460mm
Depth: 220mm
Mounting Depth: 220
Cutout: 414mm

Compare

Same-size drivers, compared with the CF1840JD/4. Clear differences are green when better and red when worse.

This driverCF1840JD/4

Best price

£283.85

37 Hz

Qts

0.40

Vas

155 L

24.8 T·m

Xmax

12.5 mm

Sensitivity

94.6 dB

Power

1200 W

Beyma18LEX1000FE

£225.00 · 21% less

Fs34 Hz −8%

Qts0.38 −4%

Vas250 L +61%

BL23.8 T·m −4%

Xmax11 mm −12%

Sensitivity96 dB +1.4

CelestionFTR18-4080HDX

£237.20 · 16% less

Fs39 Hz +6%

Qts0.43 +8%

Vas174.9 L +13%

BL21.3 T·m −14%

Xmax10.1 mm −19%

Sensitivity95.6 dB +1

CelestionCF1840JD

£239.00 · 16% less

Fs37 Hz –

Qts0.40 –

Vas155 L –

BL24.8 T·m –

Xmax12.5 mm –

Sensitivity94.6 dB –

FaitalPRO18HP1060

£245.81 · 13% less

Fs35 Hz −5%

Qts0.37 −7%

Vas200.3 L +29%

BL24.8 T·m –

Xmax12.4 mm –

Sensitivity95.6 dB +1

Beyma18LEX1000ND

£249.54 · 12% less

Fs34 Hz −8%

Qts0.39 –

Vas260 L +68%

BL22 T·m −11%

Xmax11 mm −12%

Sensitivity95.9 dB +1.3

Beyma18PWB1000FE

£255.00 · 10% less

Fs27 Hz −27%

Qts0.38 −4%

Vas317 L +105%

BL25 T·m –

Xmax12.5 mm –

Sensitivity94 dB −0.6

Beyma18LEX1600FE

£277.00 · 2% less

Fs34 Hz −8%

Qts0.38 −4%

Vas188 L +21%

BL26.9 T·m +9%

Xmax13 mm +4%

Sensitivity94.7 dB –

B&C18NBX100

£278.92 · 2% less

Fs35 Hz −5%

Qts0.37 −7%

Vas192 L +24%

BL22 T·m −11%

Xmax10 mm −20%

Sensitivity95.3 dB +0.7

FaitalPRO18HP1030

£300.59 · 6% more

Fs35 Hz −5%

Qts0.32 −19%

Vas172.2 L +11%

BL21.7 T·m −12%

Xmax12.4 mm –

Sensitivity95.5 dB +0.9

SB AudienceROSSO-18SW1000D

£309.76 · 9% more

Fs35 Hz −5%

Qts0.46 +16%

Vas164.3 L +6%

BL25.8 T·m +4%

Xmax13.7 mm +9%

Sensitivity93.6 dB −1

B&C18SW100

£333.25 · 17% more

Fs36 Hz –

Qts0.36 −9%

Vas160 L +3%

BL22 T·m −11%

Xmax12.5 mm –

Sensitivity94.7 dB –

Eighteen Sound18TLW3000

£337.44 · 19% more

Fs32 Hz −14%

Qts0.35 −12%

Vas185 L +19%

BL20 T·m −19%

Xmax12 mm −4%

Sensitivity94.3 dB –

Sica18 PF 4

£355.82 · 25% more

Fs38 Hz –

Qts0.43 +8%

Vas147.3 L −5%

BL24.6 T·m –

Xmax8 mm −36%

Sensitivity94.4 dB –

SB AudienceNERO-18SW1900D

£393.49 · 39% more

Fs34 Hz −8%

Qts0.42 +6%

Vas157.9 L –

BL28.5 T·m +15%

Xmax17.5 mm +40%

Sensitivity93.6 dB −1

Beyma18LEX1600ND

£399.00 · 41% more

Fs33 Hz −11%

Qts0.43 +8%

Vas231 L +49%

BL24.5 T·m –

Xmax14.5 mm +16%

Sensitivity94.7 dB –

No photo

Precision DevicesPD.1845-2N

£422.00 · 49% more

Fs35 Hz −5%

Qts0.39 –

Vas157 L –

BL27 T·m +9%

Xmax18 mm +44%

Sensitivity94.3 dB –

FaitalPRO18XL1800

£425.00 · 50% more

Fs29 Hz −22%

Qts0.40 –

Vas215.5 L +39%

BL25.4 T·m –

Xmax20.2 mm +61%

Sensitivity93 dB −1.6

B&C18HTX100

£809.86 · 185% more

Fs44 Hz +19%

Qts0.32 −19%

Vas173 L +12%

BL26.3 T·m +6%

Xmax13 mm +4%

Sensitivity98.4 dB +3.8

CelestionFTR18-4080FDX

No current price

Fs37 Hz –

Qts0.41 +4%

Vas160.7 L +4%

BL25.1 T·m –

Xmax6 mm −52%

Sensitivity94.9 dB –

P.Audio18NT-100XB

No current price

Fs35 Hz −5%

Qts0.41 +3%

Vas171.3 L +11%

BL24.6 T·m –

Xmax7 mm −44%

Sensitivity94.4 dB –

B&C18RBX100

No current price

Fs42 Hz +14%

Qts0.40 –

Vas136 L −12%

BL22 T·m −11%

Xmax10 mm −20%

Sensitivity95.9 dB +1.3

P.AudioP-18N-V3

No current price

Fs35 Hz −5%

Qts0.40 –

Vas179.5 L +16%

BL24.1 T·m –

Xmax9 mm −28%

Sensitivity94.7 dB –

CelestionERPROX18

No current price

Fs35 Hz −6%

Qts0.38 −5%

Vas188.9 L +22%

BL24.4 T·m –

Xmax9.5 mm −24%

Sensitivity94.7 dB –

Dayton Audio18SW1200F-8

No current price

Fs32 Hz −14%

Qts0.40 –

Vas287.7 L +86%

BL24.4 T·m –

Xmax10.6 mm −15%

Sensitivity95.5 dB +0.9

Eighteen Sound18LW2500

No current price

Fs35 Hz −5%

Qts0.44 +11%

Vas135 L −13%

BL20 T·m −19%

Xmax14 mm +12%

Sensitivity93.1 dB −1.5

Sica18 S 4 PL

No current price

Fs36 Hz –

Qts0.39 –

Vas189 L +22%

BL23.5 T·m −5%

Xmax8 mm −36%

Sensitivity95.3 dB +0.7

BishopSoundBDP18/4

No current price

Fs39 Hz +5%

Qts0.40 –

Vas183.3 L +18%

BL17.1 T·m −31%

Xmax11.3 mm −10%

Sensitivity96.2 dB +1.6

FaneCOLOSSUS PRIME 18XS

No current price

Fs33 Hz −11%

Qts0.39 −3%

Vas257 L +66%

BL22.4 T·m −10%

Xmax12 mm −4%

Sensitivity95.6 dB +1

P.Audio18BM-1000S

No current price

Fs35 Hz −5%

Qts0.40 –

Vas212.1 L +37%

BL23.8 T·m −4%

Xmax8 mm −36%

Sensitivity95.3 dB +0.7

REDCATT18FIND-1

No current price

Fs36 Hz –

Qts0.42 +6%

Vas203.4 L +31%

BL23.6 T·m −5%

Xmax5.8 mm −53%

Sensitivity95.4 dB +0.8

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
LTT Checked 26 Oct 2026 · Ships from Germany · 4 Ω · Source: inc VAT Import VAT and duty may apply	£283.85, the lowest price		Stock not listed	Visit shop at LTT

Best price over time

Tracked since 28 Sep