SB AudienceROSSO-18SW800
£187.71 · 36% less, betterFs33 Hz +6%
Qts0.46 +84%, worse
Vas258.1 L +8%
BL21 T·m −5%
Xmax11.3 mm –
Sensitivity94.9 dB −1.7
18-inch LF driver · NDH series · 100 mm voice coil · 1,000 W
CIARE NDH18-4S 4Ω
£291.62
SteadyLean Audio · All 3 offers
- Fs
- 31Hz
- Xmax
- 11.5mm
- SPL
- 97dB
- Pe
- 1000W
- BL
- 22.2T·m
- Vd
- 1339cm³
- Qts
- 0.25
- Vas
- 240L
Manufacturer response and impedance data, with source and trace details below. The left and right arrow keys read every shown curve at a frequency, a twelfth of an octave at a time, or an octave with Shift. Escape clears the reading.
Curve provenanceInspect 1 trace
These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works
- Trace datasheet-response-trace-poc/v1
frequency response
Frequency response
240 plotted pointsMedium confidence2,446 selected pixels of 2,446
CIARE NDH18-4S is an 18-inch 4 ohm LF driver rated at 1000 W RMS. The validated T/S data includes Fs 31 Hz, Qts 0.25, Vas 240 L, Xmax 11.5 mm, sensitivity 96.6 dB, plus 1339 cm³ Vd and 124 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 £291.62.
The published T/S values agree with each other
Thiele/Small
- Fs
- 31Hz
- Qts
- 0.25
- Qes
- 0.25
- Qms
- 9.8
- Vas
- 240L
- Re
- 3Ω
- Le
- 1.70mH
Motor and cone
- BL
- 22.2T·m
- Sd
- 1164cm²
- Mms
- 216g
- Xmax
- 11.5mm
- Vd †
- 1339cm³
- Voice coil
- 100mm
Power and response
- Sensitivity †
- 96.6dB
- Manufacturer sensitivity
- 100.5dB
- Power
- 1000W
- Nominal power
- 1000W
- Impedance
- 4Ω
- EBP †
- 124 · Leans vented
Size and mounting
- Diameter
- 388mm
- Cutout
- 354mm
- Bolt circle
- 370mm
- Depth
- 208mm
- Weight
- 8kg
Other published values
- Power Program
- 2000
Sensitivity shows 96.6 dB, calculated from the T/S values. CIARE publishes 100.5 dB, 3.9 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else CIARE lists
LF · Primary · 18″
- BL
- 22.2T·m
- Fs
- 31Hz
- Le
- 1.70mH
- Re
- 3Ω
- Sd
- 1164cm²
- Mms
- 216g
- Qes
- 0.25
- Qms
- 9.8
- Qts
- 0.25
- SPL
- 96.6dB
- Vas
- 240L
- Xmax
- 11.5mm
- Power
- 1000W
- Impedance
- 4Ω
- Sensitivity
- 100.5dB
- Nominal power
- 1000W
- Power Program
- 2000
- Calculated sensitivity †
- 96.6dB
- Manufacturer sensitivity
- 100.5dB
- Voice coil
- 100mm
- Weight
- 8kg
- Diameter
- 388mm
- Depth
- 208mm
- Cutout
- 354mm
- Bolt circle
- 370mm
02
Compare
Same-size drivers, compared with the NDH18-4S. Clear differences are green when better and red when worse.
This driverNDH18-4S
Best price
£291.62
Fs
31 Hz
Qts
0.25
Vas
240 L
BL
22.2 T·m
Xmax
11.5 mm
Sensitivity
96.6 dB
Power
1000 W
B&C18NW100
£234.88 · 19% less, betterFs30 Hz −3%
Qts0.27 +8%
Vas203.5 L −15%, better
BL24.7 T·m +11%, better
Xmax9 mm −22%, worse
Sensitivity95 dB −1.6
Beyma18LEX1000ND
£249.54 · 14% less, betterFs34 Hz +10%
Qts0.39 +56%, worse
Vas260 L +8%
BL22 T·m –
Xmax11 mm −4%
Sensitivity95.9 dB −0.7
RCFLF18G401
£252.42 · 13% less, betterFs33 Hz +6%
Qts0.29 +16%, worse
Vas268 L +12%, worse
BL24.6 T·m +11%, better
Xmax9 mm −22%, worse
Sensitivity97.1 dB +0.5
Eighteen Sound18W1001
£254.65 · 13% less, betterFs35 Hz +13%, worse
Qts0.23 −8%
Vas268 L +12%, worse
BL27.6 T·m +24%, better
Xmax7 mm −39%, worse
Sensitivity98.8 dB +2.2, better
Beyma18PW1400FE
£273.68 · 6% less, betterFs32 Hz +3%
Qts0.27 +8%
Vas228.9 L −5%
BL29 T·m +31%, better
Xmax10 mm −13%, worse
Sensitivity96.3 dB –
RCFLF18X401
£289.00 · Same priceFs30 Hz −3%
Qts0.30 +20%, worse
Vas274 L +14%, worse
BL26.5 T·m +19%, better
Xmax12 mm +4%
Sensitivity95.8 dB −0.8
Eighteen Sound18LW2600
£297.25 · 2% moreFs30 Hz −3%
Qts0.28 +12%, worse
Vas186 L −23%, better
BL23.4 T·m +5%
Xmax14 mm +22%, better
Sensitivity94.4 dB −2.2, worse
Beyma18QLEX1600FE
£299.00 · 3% moreFs30 Hz −3%
Qts0.23 −8%
Vas195 L −19%, better
BL36.4 T·m +64%, better
Xmax13 mm +13%, better
Sensitivity95.4 dB −1.2
Eighteen Sound18NLW9400
£305.62 · 5% moreFs32 Hz +3%
Qts0.22 −12%, better
Vas278 L +16%, worse
BL20.5 T·m −8%
Xmax9.5 mm −17%, worse
Sensitivity98 dB +1.4
Precision DevicesPD.185C003
£359.00 · 23% more, worseFs33 Hz +6%
Qts0.24 −4%
Vas224 L −7%
BL31.5 T·m +42%, better
Xmax11 mm −4%
Sensitivity97.5 dB +0.9
RCFLF18N401
£359.21 · 23% more, worseFs32 Hz +3%
Qts0.26 +4%
Vas257 L +7%
BL27.8 T·m +25%, better
Xmax9 mm −22%, worse
Sensitivity97 dB –
Eighteen Sound18NLW4100
£371.77 · 27% more, worseFs29 Hz −6%
Qts0.27 +8%
Vas207 L −14%, better
BL22.8 T·m –
Xmax15 mm +30%, better
Sensitivity94.6 dB −2, worse
RCFLF18N451
£375.00 · 29% more, worseFs31 Hz –
Qts0.24 −4%
Vas245 L –
BL30.2 T·m +36%, better
Xmax9 mm −22%, worse
Sensitivity96.7 dB –
Oberton18XB1500V2
£388.58 · 33% more, worseFs36 Hz +15%, worse
Qts0.23 −10%
Vas192.5 L −20%, better
BL31.6 T·m +42%, better
Xmax11 mm −4%
Sensitivity97.9 dB +1.3
Oberton18XB1600V2
£388.58 · 33% more, worseFs33 Hz +5%
Qts0.28 +11%, worse
Vas267 L +11%, worse
BL29.6 T·m +33%, better
Xmax12.5 mm +9%
Sensitivity97.1 dB +0.5
Precision DevicesPD.1850/3
£399.00 · 37% more, worseFs33 Hz +7%
Qts0.24 −4%
Vas203.8 L −15%, better
BL31.0 T·m +40%, better
Xmax11.1 mm −4%
Sensitivity96.9 dB –
B&C18DS100
£456.91 · 57% more, worseFs32 Hz +3%
Qts0.24 −4%
Vas157 L −35%, better
BL24.3 T·m +9%
Xmax14 mm +22%, better
Sensitivity95.3 dB −1.3
CIAREPW455
No current priceFs35 Hz +13%, worse
Qts0.24 −4%
Vas236 L –
BL21.8 T·m –
Xmax8.5 mm −26%, worse
Sensitivity98.3 dB +1.7
Eighteen Sound18LW1251
No current priceFs35 Hz +13%, worse
Qts0.27 +8%
Vas268 L +12%, worse
BL23.6 T·m +6%
Xmax9 mm −22%, worse
Sensitivity98.2 dB +1.6
Eighteen Sound18W2000
No current priceFs37 Hz +19%, worse
Qts0.25 –
Vas230 L −4%
BL27.1 T·m +22%, better
Xmax–
Sensitivity98.5 dB +1.9
Eighteen Sound18W2001
No current priceFs37 Hz +19%, worse
Qts0.25 –
Vas230 L −4%
BL27.1 T·m +22%, better
Xmax7 mm −39%, worse
Sensitivity98.5 dB +1.9
Oberton18B500
No current priceFs35 Hz +13%, worse
Qts0.28 +10%, worse
Vas243.9 L –
BL24.1 T·m +8%
Xmax8.8 mm −24%, worse
Sensitivity97.7 dB +1.1
Oberton18NSW700
No current priceFs30 Hz –
Qts0.24 –
Vas309.0 L +29%, worse
BL26.6 T·m +20%, better
Xmax14 mm +22%, better
Sensitivity97.5 dB +0.9
Oberton18FBR700
No current priceFs36 Hz +15%, worse
Qts0.27 +8%
Vas231.3 L −4%
BL25.2 T·m +13%, better
Xmax8 mm −30%, worse
Sensitivity97.8 dB +1.2
Eighteen Sound18NLW9000
No current priceFs32 Hz +3%
Qts0.21 −16%, better
Vas247 L –
BL25 T·m +13%, better
Xmax14 mm +22%, better
Sensitivity97.7 dB +1.1
No current price
Fs33 Hz +6%
Qts0.39 +54%, worse
Vas257 L +7%
BL22.4 T·m –
Xmax12 mm +4%
Sensitivity95.6 dB −1
No photo
RCFLF18Y402
No current priceFs30 Hz −3%
Qts0.30 +20%, worse
Vas274 L +14%, worse
BL26.5 T·m +19%, better
Xmax12 mm +4%
Sensitivity95.8 dB −0.8
RCFLF18G908
No current priceFs33 Hz +6%
Qts0.29 +16%, worse
Vas268 L +12%, worse
BL24.6 T·m +11%, better
Xmax9 mm −22%, worse
Sensitivity97.1 dB +0.5
Oberton18NXB1200
No current priceFs36 Hz +16%, worse
Qts0.28 +13%, worse
Vas159.6 L −33%, better
BL29.4 T·m +32%, better
Xmax11.5 mm –
Sensitivity96 dB −0.6
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
Lean Audio | £291.62, the lowest price | Stock not listed | Visit shop at Lean Audio | |
Lean Audio | £291.62 | Back order | Visit shop at Lean Audio |
Best price over time
Tracked since 1 Apr