SB AudienceBIANCO-18SW450
£135.53 · 50% less, betterFs28 Hz −34%, better
Qts0.45 −35%, better
Vas370.4 L +236%, worse
BL18.8 T·m –
Xmax10.9 mm −9%
Sensitivity94.4 dB +1.8
18-inch LF driver · BWP series · 125 mm voice coil · 1,800 W
BishopSound BWP18/4 4Ω
4 Ω
£269.00
17%BishopSound · In stock · All 1 offer
- Fs
- 42Hz
- Xmax
- 12mm
- SPL
- 93dB
- Pe
- 1800W
- BL
- 18.8T·m
- Vd
- 1493cm³
- Qts
- 0.69
- Vas
- 110L
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 2 traces
These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works
- Trace datasheet-response-trace-poc/v1
spl
Frequency response
207 plotted pointsMedium confidence287 selected pixels of 287 - Trace datasheet-response-trace-poc/v1
impedance
Impedance response
214 plotted pointsMedium confidence321 selected pixels of 321
BishopSound BWP18/4 is an 18-inch 4 ohm LF driver rated at 1800 W RMS. The validated T/S data includes Fs 42 Hz, Qts 0.69, Vas 110.1 L, Xmax 12 mm, sensitivity 92.6 dB, plus 1493 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 £269.00.
Partial source evidence
Automated T/S checks passed, but some material low-frequency parameters are not published for this record.
Material fields not published: Mms
- Manufacturer page linked
- Datasheet linked
- Canonical units normalized for comparison
- Vd can be derived from Sd and Xmax
- EBP can be derived from Fs and Qes
Thiele/Small
- Fs
- 42Hz
- Qts
- 0.69
- Qes
- 0.73
- Qms
- 12.7
- Vas
- 110.1L
- Re
- 3.5Ω
- Le
- 0.32mH
Motor and cone
- BL
- 18.8T·m
- Sd
- 1244cm²
- Xmax
- 12mm
- Vd †
- 1493cm³
- Voice coil
- 125mm
Power and response
- Sensitivity †
- 92.6dB
- Manufacturer sensitivity
- 92.6dB
- Power
- 1800W
- Impedance
- 4Ω
- EBP †
- 58 · Sealed or vented
Size and mounting
- Diameter
- 460mm
- Bolt circle
- 440mm
- Depth
- 202mm
† Calculated by bits from the published values
What this validation status means
Everything else BishopSound lists
LF · Primary · 18″
- BL
- 18.8T·m
- Fs
- 42Hz
- Le
- 0.32mH
- Re
- 3.5Ω
- Sd
- 1244cm²
- Qes
- 0.73
- Qms
- 12.7
- Qts
- 0.69
- SPL
- 92.6dB
- Vas
- 110.1L
- Xmax
- 12mm
- Power
- 1800W
- Impedance
- 4Ω
- Sensitivity
- 92.6dB
- Calculated sensitivity †
- 92.6dB
- Manufacturer sensitivity
- 92.6dB
- Voice coil
- 125mm
- Diameter
- 460mm
- Depth
- 202mm
- Bolt circle
- 440mm
02
Compare
Same-size drivers, compared with the BWP18/4. Clear differences are green when better and red when worse.
This driverBWP18/4
Best price
£269.00
Fs
42 Hz
Qts
0.69
Vas
110.1 L
BL
18.8 T·m
Xmax
12 mm
Sensitivity
92.6 dB
Power
1800 W
SB AudienceROSSO-18SW800
£187.71 · 30% less, betterFs33 Hz −22%, better
Qts0.46 −33%, better
Vas258.1 L +134%, worse
BL21 T·m +12%, better
Xmax11.3 mm −6%
Sensitivity94.9 dB +2.3, better
LavoceSAF184.04
£225.24 · 16% less, betterFs38 Hz −10%, better
Qts0.50 −27%, better
Vas134.8 L +22%, worse
BL26.5 T·m +41%, better
Xmax12.5 mm +4%
Sensitivity93.5 dB +0.9
PRV Audio18SW2400
£293.02 · 9% more, worseFs36 Hz −14%, better
Qts0.56 −19%, better
Vas192.8 L +75%, worse
BL22.5 T·m +20%, better
Xmax12.5 mm +4%
Sensitivity94 dB +1.4
B&C18SW100
£333.25 · 24% more, worseFs36 Hz −15%, better
Qts0.36 −48%, better
Vas160 L +45%, worse
BL22 T·m +17%, better
Xmax12.5 mm +4%
Sensitivity94.7 dB +2.1, better
Eighteen Sound18TLW3000
£337.44 · 25% more, worseFs32 Hz −24%, better
Qts0.35 −49%, better
Vas185 L +68%, worse
BL20 T·m +6%
Xmax12 mm –
Sensitivity94.3 dB +1.7
Dayton AudioUMII18-22
£376.75 · 40% more, worseFs22 Hz −48%, better
Qts0.53 −23%, better
Vas248.2 L +125%, worse
BL19.2 T·m –
Xmax28 mm +133%, better
Sensitivity88 dB −4.6, worse
Precision DevicesPD.1852/2
£397.00 · 48% more, worseFs42 Hz –
Qts0.33 −52%, better
Vas120.4 L +9%
BL30.5 T·m +62%, better
Xmax12 mm –
Sensitivity96.2 dB +3.6, better
FaitalPRO18HP1060
£436.24 · 62% more, worseFs35 Hz −17%, better
Qts0.33 −52%, better
Vas184.4 L +67%, worse
BL20.7 T·m +10%, better
Xmax12.4 mm +4%
Sensitivity95.7 dB +3.1, better
BishopSoundBWP18/8/V2
No current priceFs43 Hz –
Qts0.64 −6%
Vas120.9 L +10%
BL24.1 T·m +28%, better
Xmax12 mm –
Sensitivity93.5 dB +0.9
CIARE18.00SW
No current priceFs36 Hz −15%, better
Qts0.61 −11%, better
Vas94 L −15%, better
BL20 T·m +6%
Xmax14 mm +17%, better
Sensitivity90 dB −2.6, worse
P.AudioP180/2242-V3
No current priceFs46 Hz +9%
Qts0.68 –
Vas131.4 L +19%, worse
BL20.2 T·m +7%
Xmax6.8 mm −43%, worse
Sensitivity94.4 dB +1.8
P.AudioC18-650EL-V4
No current priceFs35 Hz −17%, better
Qts0.68 –
Vas127.0 L +15%, worse
BL22.1 T·m +18%, better
Xmax7 mm −42%, worse
Sensitivity90.9 dB −1.7
P.AudioC18-1000-V3
No current priceFs41 Hz −3%
Qts0.72 +5%
Vas117.6 L +7%
BL22.9 T·m +22%, better
Xmax5.3 mm −56%, worse
Sensitivity92.3 dB –
CIARECSD184-22
No current priceFs37 Hz −13%, better
Qts0.53 −23%, better
Vas141 L +28%, worse
BL18.5 T·m –
Xmax13 mm +8%
Sensitivity92.9 dB –
BishopSoundBSP18
No current priceFs48 Hz +13%, worse
Qts0.81 +18%, worse
Vas125.9 L +14%, worse
BL21.0 T·m +12%, better
Xmax8 mm −33%, worse
Sensitivity94.2 dB +1.6
P.AudioP180/2243
No current priceFs35 Hz −17%, better
Qts0.59 −14%, better
Vas159.1 L +44%, worse
BL20.1 T·m +7%
Xmax8.5 mm −29%, worse
Sensitivity92.2 dB –
P.AudioEX18-1000S
No current priceFs38 Hz −10%, better
Qts0.61 −11%, better
Vas190.6 L +73%, worse
BL20.1 T·m +7%
Xmax5.3 mm −56%, worse
Sensitivity94.1 dB +1.5
P.AudioGST-181500-V3
No current priceFs40 Hz −5%
Qts0.60 −13%, better
Vas92.2 L −16%, better
BL26.8 T·m +42%, better
Xmax9 mm −25%, worse
Sensitivity91.7 dB −0.9
P.AudioSD18-1700EL
No current priceFs45 Hz +6%
Qts0.59 −14%, better
Vas99.7 L −9%
BL25.9 T·m +38%, better
Xmax4.8 mm −60%, worse
Sensitivity93.6 dB +1
Eighteen Sound18LW2500
No current priceFs35 Hz −17%, better
Qts0.44 −36%, better
Vas135 L +23%, worse
BL20 T·m +6%
Xmax14 mm +17%, better
Sensitivity93.1 dB +0.5
BishopSoundBDP18/8
No current priceFs40 Hz −6%
Qts0.56 −19%, better
Vas178.1 L +62%, worse
BL23.0 T·m +22%, better
Xmax11.3 mm −6%
Sensitivity94.8 dB +2.2, better
FaneIMPERIUM 18XL
No current priceFs36 Hz −15%, better
Qts0.53 −23%, better
Vas205 L +86%, worse
BL20.4 T·m +8%
Xmax10.5 mm −13%, worse
Sensitivity94.4 dB +1.8
Precision DevicesPD.185NR1
No current priceFs34 Hz −20%, better
Qts0.27 −61%, better
Vas102 L −7%
BL29.5 T·m +57%, better
Xmax11.8 mm –
Sensitivity93.4 dB +0.8
Acoustic EleganceIB18AU-8
No current priceFs28 Hz −33%, better
Qts0.59 −14%, better
Vas389.8 L +254%, worse
BL16 T·m −15%, worse
Xmax18 mm +50%, better
Sensitivity93.3 dB +0.7
P.AudioC18-1200
No current priceFs38 Hz −10%, better
Qts0.55 −20%, better
Vas136.4 L +24%, worse
BL25.1 T·m +34%, better
Xmax9.5 mm −21%, worse
Sensitivity93.2 dB +0.6
PeerlessFSL-1830R09-08
No current priceFs33 Hz −22%, better
Qts0.58 −16%, better
Vas220 L +100%, worse
BL21.1 T·m +12%, better
Xmax15.9 mm +33%, better
Sensitivity93.2 dB +0.6
B&C18RBX100
No current priceFs42 Hz –
Qts0.40 −42%, better
Vas136 L +24%, worse
BL22 T·m +17%, better
Xmax10 mm −17%, worse
Sensitivity95.9 dB +3.3, better
Acoustic EleganceIB18HT-8
No current priceFs18 Hz −57%, better
Qts0.57 −17%, better
Vas632.1 L +474%, worse
BL16 T·m −15%, worse
Xmax18 mm +50%, better
Sensitivity90 dB −2.6, worse
BishopSoundBDP18/4
No current priceFs39 Hz −8%
Qts0.40 −42%, better
Vas183.3 L +66%, worse
BL17.1 T·m −9%
Xmax11.3 mm −6%
Sensitivity96.2 dB +3.6, better
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 |
|---|---|---|---|---|
BishopSound | £269.00, the lowest price | In stock | Visit shop at BishopSound |
Best price over time
Tracked since 10 Jul
Recent changes
- 8 OctBishopSound£325.14 → £269.00Down 17% from £325.14
- 7 OctBishopSound£323.94 → £325.14Up 0.4% from £323.94
- 3 OctBishopSound£322.74 → £323.94Up 0.4% from £322.74