REDCATT182FIND
£199.28 · 50% less, betterFs31 Hz −6%
Qts0.23 −4%
Vas208.6 L –
BL35.4 T·m +14%, better
Xmax5.8 mm −48%, worse
Sensitivity96.2 dB −0.7
18-inch LF driver · PD series · 127 mm voice coil · 800 W
Precision Devices PD.1850/3 8Ω
8 Ω · 35–2000 Hz
£399.00
2.9%Thomann · In stock · All 1 offer
- Fs
- 33Hz
- Xmax
- 11.1mm
- SPL
- 97dB
- Pe
- 800W
- BL
- 31.0T·m
- Vd
- 1286cm³
- Qts
- 0.24
- Vas
- 204L
Precision Devices PD.1850/3 is an 18-inch 8 ohm LF driver rated at 800 W RMS. The validated T/S data includes Fs 33 Hz, Qts 0.24, Vas 203.8 L, Xmax 11.1 mm, sensitivity 96.9 dB, plus 1286 cm³ Vd and 138 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 £399.00.
The published T/S values agree with each other
Thiele/Small
- Fs
- 33Hz
- Qts
- 0.24
- Qes
- 0.24
- Qms
- 15.4
- Vas
- 203.8L
- Re
- 5.2Ω
- Le
- 1.33mH
Motor and cone
- BL
- 31.0T·m
- Sd
- 1164cm²
- Mms
- 215g
- Xmax
- 11.1mm
- Vd †
- 1286cm³
- Voice coil
- 127mm
- Flux density
- 1.18T
Power and response
- Sensitivity †
- 96.9dB
- Manufacturer sensitivity
- 98dB
- Power
- 800W
- Impedance
- 8Ω
- Range
- 35–2000Hz
- EBP †
- 138 · Leans vented
Size and mounting
- Diameter
- 474mm
- Cutout
- 415mm
- Bolt circle
- 455mm
- Depth
- 177.4mm
- Weight
- 23.3kg
Other published values
- Cms
- 0.11mm/N
- Power Peak
- 3200
Sensitivity shows 96.9 dB, calculated from the T/S values. Precision Devices publishes 98.0 dB, 1.1 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Precision Devices lists
LF · Primary · 18″
- BL
- 31.0T·m
- Fs
- 33Hz
- Le
- 1.33mH
- Re
- 5.2Ω
- Sd
- 1164cm²
- Cms
- 0.11mm/N
- Mms
- 215g
- Qes
- 0.24
- Qms
- 15.4
- Qts
- 0.24
- SPL
- 96.9dB
- Vas
- 203.8L
- Xmax
- 11.1mm
- Power
- 800W
- Impedance
- 8Ω
- Power Peak
- 3200
- Flux density
- 1.18T
- Sensitivity
- 98dB
- Low limit
- 35Hz
- Calculated sensitivity †
- 96.9dB
- High limit
- 2000Hz
- Manufacturer sensitivity
- 98dB
- Voice coil
- 127mm
- Weight
- 23.3kg
- Diameter
- 474mm
- Depth
- 177.4mm
- Cutout
- 415mm
- Bolt circle
- 455mm
02
Designs
Plans from builders
Links to published plans that name this driver
The designer’s pick closest to the Void V18-1000 it was measured with
03
Compare
Same-size drivers, compared with the PD.1850/3. Clear differences are green when better and red when worse.
This driverPD.1850/3
Best price
£399.00
Fs
33 Hz
Qts
0.24
Vas
203.8 L
BL
31.0 T·m
Xmax
11.1 mm
Sensitivity
96.9 dB
Power
800 W
B&C18NW100
£234.88 · 41% less, betterFs31 Hz −6%
Qts0.26 +8%
Vas252 L +24%, worse
BL28 T·m −10%
Xmax9 mm −19%, worse
Sensitivity96.5 dB –
B&C18PZB100
£235.00 · 41% less, betterFs30 Hz −10%
Qts0.24 –
Vas297 L +46%, worse
BL26 T·m −16%, worse
Xmax8 mm −28%, worse
Sensitivity97.1 dB –
Eighteen Sound18W1001
£254.65 · 36% less, betterFs35 Hz +6%
Qts0.23 −4%
Vas268 L +31%, worse
BL27.6 T·m −11%, worse
Xmax7 mm −37%, worse
Sensitivity98.8 dB +1.9
FaitalPRO18HP1022
£266.26 · 33% less, betterFs35 Hz +6%
Qts0.30 +25%, worse
Vas204.9 L –
BL28 T·m −10%
Xmax9.5 mm −14%, worse
Sensitivity96.6 dB –
Beyma18PW1400FE
£273.68 · 31% less, betterFs32 Hz −3%
Qts0.27 +13%, worse
Vas228.9 L +12%, worse
BL29 T·m −6%
Xmax10 mm −10%
Sensitivity96.3 dB −0.6
CIARENDH18-4S
£291.62 · 27% less, betterFs31 Hz −6%
Qts0.25 +4%
Vas240 L +18%, worse
BL22.2 T·m −28%, worse
Xmax11.5 mm +4%
Sensitivity96.6 dB –
Beyma18QLEX1600FE
£299.00 · 25% less, betterFs30 Hz −10%
Qts0.23 −4%
Vas195 L −4%
BL36.4 T·m +17%, better
Xmax13 mm +18%, better
Sensitivity95.4 dB −1.5
Eighteen Sound18NLW9400
£305.62 · 23% less, betterFs33 Hz –
Qts0.26 +8%
Vas268 L +31%, worse
BL26 T·m −16%, worse
Xmax9.5 mm −14%, worse
Sensitivity97.4 dB +0.5
REDCATT18NPW
£347.48 · 13% less, betterFs36 Hz +9%
Qts0.28 +16%, worse
Vas211.5 L +4%
BL27.3 T·m −12%, worse
Xmax4.8 mm −56%, worse
Sensitivity97.5 dB +0.6
Precision DevicesPD.185C003
£359.00 · 10% less, betterFs33 Hz –
Qts0.24 –
Vas224 L +10%
BL31.5 T·m –
Xmax11 mm –
Sensitivity97.5 dB +0.6
RCFLF18N401
£359.21 · 10% less, betterFs32 Hz −3%
Qts0.26 +8%
Vas257 L +26%, worse
BL27.8 T·m −10%, worse
Xmax9 mm −19%, worse
Sensitivity97 dB –
RCFLF18X451
£360.00 · 10% less, betterFs30 Hz −10%
Qts0.28 +17%, worse
Vas220 L +8%
BL30.5 T·m –
Xmax14 mm +27%, better
Sensitivity95.1 dB −1.8
RCFLF18N451
£375.00 · 6% less, betterFs31 Hz −6%
Qts0.24 –
Vas245 L +20%, worse
BL30.2 T·m –
Xmax9 mm −19%, worse
Sensitivity96.7 dB –
Oberton18XB1500V2
£388.58 · 3% lessFs36 Hz +8%
Qts0.23 −6%
Vas192.5 L −6%
BL31.6 T·m –
Xmax11 mm –
Sensitivity97.9 dB +1
Oberton18XB1600V2
£388.58 · 3% lessFs33 Hz –
Qts0.28 +16%, worse
Vas267 L +31%, worse
BL29.6 T·m −4%
Xmax12.5 mm +13%, better
Sensitivity97.1 dB –
RCFLN19S400
£416.98 · 5% moreFs32 Hz −3%
Qts0.26 +8%
Vas204 L –
BL32 T·m +3%
Xmax17 mm +54%, better
Sensitivity96 dB −0.9
FaitalPRO18XL2000
£420.00 · 5% more, worseFs28 Hz −16%, better
Qts0.27 +13%, worse
Vas232.1 L +14%, worse
BL30.8 T·m –
Xmax16.3 mm +48%, better
Sensitivity94.6 dB −2.3, worse
FaitalPRO18XL1700
£469.00 · 18% more, worseFs28 Hz −16%, better
Qts0.28 +17%, worse
Vas227 L +11%, worse
BL30.5 T·m –
Xmax16.2 mm +46%, better
Sensitivity94.4 dB −2.5, worse
REDCATT181XR
£544.21 · 36% more, worseFs30 Hz −10%
Qts0.23 −4%
Vas195 L −4%
BL28.3 T·m −9%
Xmax17 mm +54%, better
Sensitivity95.4 dB −1.5
Oberton18NXB1200
No current priceFs36 Hz +8%
Qts0.28 +17%, worse
Vas159.6 L −22%, better
BL29.4 T·m −5%
Xmax11.5 mm +4%
Sensitivity96 dB −0.9
Eighteen Sound18W2000
No current priceFs37 Hz +12%, worse
Qts0.25 +4%
Vas230 L +13%, worse
BL27.1 T·m −13%, worse
Xmax–
Sensitivity98.5 dB +1.6
Eighteen Sound18W2001
No current priceFs37 Hz +12%, worse
Qts0.25 +4%
Vas230 L +13%, worse
BL27.1 T·m −13%, worse
Xmax7 mm −37%, worse
Sensitivity98.5 dB +1.6
Radian Audio2218NEO-8
No current priceFs30 Hz −10%
Qts0.23 −4%
Vas312 L +53%, worse
BL33 T·m +6%
Xmax9 mm −19%, worse
Sensitivity97.3 dB –
No photo
FaneIMPERIUM 18NDXL
No current priceFs33 Hz –
Qts0.29 +23%, worse
Vas203 L –
BL29.4 T·m −5%
Xmax12 mm +9%
Sensitivity95.9 dB −1
CIAREPW455
No current priceFs36 Hz +9%
Qts0.24 –
Vas274 L +34%, worse
BL26.2 T·m −16%, worse
Xmax7.5 mm −32%, worse
Sensitivity99.3 dB +2.4, better
Precision DevicesPD.185NR1
No current priceFs34 Hz –
Qts0.27 +13%, worse
Vas102 L −50%, better
BL29.5 T·m −5%
Xmax11.8 mm +6%
Sensitivity93.4 dB −3.5, worse
Oberton18NSW700
No current priceFs30 Hz −8%
Qts0.24 –
Vas309.0 L +52%, worse
BL26.6 T·m −14%, worse
Xmax14 mm +27%, better
Sensitivity97.5 dB +0.6
Oberton18NXB1601
No current priceFs35 Hz +4%
Qts0.29 +19%, worse
Vas146.2 L −28%, better
BL30.5 T·m –
Xmax12.5 mm +13%, better
Sensitivity95.1 dB −1.8
VAS Audio18-1700NC
No current priceFs32 Hz −3%
Qts0.28 +17%, worse
Vas178 L −13%, better
BL34.4 T·m +11%, better
Xmax13.5 mm +22%, better
Sensitivity95.1 dB −1.8
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- Thomann4.9 out of 510 ratings · Checked 25 Oct 2026Read reviews on Thomann
Each shop collects its own ratings. Bits shows them as published and doesn't verify them.
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
Thomann | £399.00, the lowest price | In stock | Visit shop at Thomann |
Best price over time
Tracked since 16 Jun
Recent changes
- 16 OctThomann£411.00 → £399.00Down 2.9% from £411.00
- 20 SepThomann£415.00 → £411.00Down 1.0% from £415.00
- 4 SepThomann£411.00 → £415.00Up 1.0% from £411.00