HiViM6N
£20.93 · 71% less, betterFs46 Hz –
Qts0.39 +11%, worse
Vas21.9 L +6%
BL7.8 T·m +30%, better
Xmax4.3 mm –
Sensitivity89.1 dB −0.6
7-inch LF driver · Discovery series · 32 mm voice coil · 55 W
Scanspeak 18W/4434G00 4Ω
4 Ω
£82.44
3.0%Falcon Acoustics · In stock · All 5 offers
- Fs
- 47Hz
- Xmax
- 4.3mm
- SPL
- 90dB
- Pe
- 55W
- BL
- 6T·m
- Vd
- 59cm³
- Qts
- 0.35
- Vas
- 21L
Scanspeak 18W/4434G00 is a 7-inch 4 ohm LF driver rated at 55 W RMS. The validated T/S data includes Fs 47 Hz, Qts 0.35, Vas 20.7 L, Xmax 4.3 mm, sensitivity 89.7 dB, plus 59 cm³ Vd and 127 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 £72.01.
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
- 47Hz
- Qts
- 0.35
- Qes
- 0.37
- Qms
- 7.8
- Vas
- 20.7L
- Re
- 3Ω
- Le
- 0.39mH
Motor and cone
- BL
- 6T·m
- Sd
- 137cm²
- Xmax
- 4.3mm
- Vd †
- 59cm³
- Voice coil
- 32mm
Power and response
- Sensitivity †
- 89.7dB
- Manufacturer sensitivity
- 91.5dB
- Power
- 55W
- Impedance
- 4Ω
- Min. impedance
- 3.9Ω
- EBP †
- 127 · Leans vented
Size and mounting
- Diameter
- 180mm
Other published values
- Cms
- 0.79mm/N
- Rms
- 0.55kg/s
- Xmech
- 8
- Power Peak
- 170
Sensitivity shows 89.7 dB, calculated from the T/S values. Scanspeak publishes 91.5 dB, 1.8 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Scanspeak lists
LF · Primary · 7″
- BL
- 6T·m
- Fs
- 47Hz
- Le
- 0.39mH
- Re
- 3Ω
- Sd
- 137cm²
- Cms
- 0.79mm/N
- Qes
- 0.37
- Qms
- 7.8
- Qts
- 0.35
- Rms
- 0.55kg/s
- SPL
- 89.7dB
- Vas
- 20.7L
- Xmax
- 4.3mm
- Xmech
- 8
- Power
- 55W
- Impedance
- 4Ω
- Power Peak
- 170
- Sensitivity
- 91.5dB
- Calculated sensitivity †
- 89.7dB
- Manufacturer sensitivity
- 91.5dB
- Min. impedance
- 3.9Ω
- Voice coil
- 32mm
- Diameter
- 180mm
02
Compare
Same-size drivers, compared with the 18W/4434G00. Clear differences are green when better and red when worse.
This driver18W/4434G00
Best price
£72.01
Fs
47 Hz
Qts
0.35
Vas
20.7 L
BL
6 T·m
Xmax
4.3 mm
Sensitivity
89.7 dB
Power
55 W
Dayton AudioSIG180-4
£41.13 · 43% less, betterFs41 Hz −14%, better
Qts0.38 +9%
Vas23.2 L +12%, worse
BL6.6 T·m +10%
Xmax5 mm +16%, better
Sensitivity87.8 dB −1.9
HiViF6
£41.82 · 42% less, betterFs45 Hz −4%
Qts0.35 –
Vas16.4 L −21%, better
BL9 T·m +50%, better
Xmax4.3 mm –
Sensitivity88 dB −1.7
Dayton AudioRS150-8
£44.87 · 38% less, betterFs48 Hz –
Qts0.34 –
Vas16.6 L −20%, better
BL5.6 T·m −7%
Xmax4 mm −7%
Sensitivity88.3 dB −1.4
Dayton AudioRS150P-4A
£44.87 · 38% less, betterFs44 Hz −7%
Qts0.34 –
Vas15.7 L −24%, better
BL4.4 T·m −27%, worse
Xmax4.4 mm –
Sensitivity87 dB −2.7, worse
Dayton AudioRS150-4
£44.87 · 38% less, betterFs45 Hz −4%
Qts0.33 −6%
Vas16.4 L −21%, better
BL4.1 T·m −32%, worse
Xmax4.4 mm –
Sensitivity87.8 dB −1.9
CIAREHW162
£47.73 · 34% less, betterFs44 Hz −6%
Qts0.33 −6%
Vas24.8 L +20%, worse
BL7.5 T·m +25%, better
Xmax4.5 mm +5%
Sensitivity89.4 dB –
Dayton AudioRS150P-8A
£58.03 · 19% less, betterFs47 Hz –
Qts0.34 –
Vas16.7 L −19%, better
BL5.6 T·m −7%
Xmax4 mm −7%
Sensitivity88.1 dB −1.6
CIAREHW172
£62.80 · 13% less, betterFs46 Hz –
Qts0.37 +6%
Vas20 L −3%
BL7.6 T·m +26%, better
Xmax4.5 mm +5%
Sensitivity88.4 dB −1.3
CIAREHWB160
£66.98 · 7% less, betterFs46 Hz –
Qts0.36 –
Vas19.5 L −6%
BL6.5 T·m +8%
Xmax4.5 mm +5%
Sensitivity89 dB −0.7
CIARECME200
£67.27 · 7% less, betterFs76 Hz +62%, worse
Qts0.37 +6%
Vas18 L −13%, better
BL7.3 T·m +22%, better
Xmax3.5 mm −19%, worse
Sensitivity95.1 dB +5.4, better
Dayton AudioPS180-8
£89.75 · 25% more, worseFs59 Hz +24%, worse
Qts0.33 −6%
Vas27.6 L +33%, worse
BL6.8 T·m +14%, better
Xmax4.6 mm +7%
Sensitivity93.9 dB +4.2, better
WavecorWF152BD13
£98.00 · 36% more, worseFs50 Hz +6%
Qts0.33 −6%
Vas9.2 L −56%, better
BL6.3 T·m +6%
Xmax4.5 mm +5%
Sensitivity87.3 dB −2.4, worse
Sica8 FE 2 CP
£104.62 · 45% more, worseFs67 Hz +43%, worse
Qts0.32 −9%
Vas16.9 L −18%, better
BL12.3 T·m +105%, better
Xmax4.5 mm +5%
Sensitivity93.4 dB +3.7, better
WavecorWF152BD09
£109.96 · 53% more, worseFs52 Hz +11%, worse
Qts0.34 –
Vas8.6 L −58%, better
BL5.8 T·m −3%
Xmax4.5 mm +5%
Sensitivity87.4 dB −2.3, worse
WavecorWF182BD17
£121.93 · 69% more, worseFs33 Hz −30%, better
Qts0.35 –
Vas24.3 L +17%, worse
BL6.5 T·m +8%
Xmax5.5 mm +28%, better
Sensitivity85.8 dB −3.9, worse
WavecorWF152BD03
£142.76 · 98% more, worseFs56 Hz +18%, worse
Qts0.35 –
Vas9.2 L −56%, better
BL5.8 T·m −3%
Xmax4.5 mm +5%
Sensitivity88.4 dB −1.3
RS SpeakersMW 174.38 FIBONACCI
£145.69 · 102% more, worseFs46 Hz –
Qts0.39 +11%, worse
Vas18.7 L −10%
BL7.0 T·m +17%, better
Xmax4.5 mm +5%
Sensitivity88.3 dB −1.4
Scanspeak15M/8631G00
£167.42 · 132% more, worseFs42 Hz −11%, better
Qts0.35 –
Vas16.2 L −22%, better
BL6.8 T·m +13%, better
Xmax3 mm −30%, worse
Sensitivity87.1 dB −2.6, worse
AccutonC173-6-191
£325.80 · 352% more, worseFs39 Hz −18%, better
Qts0.34 –
Vas21.6 L +4%
BL8.8 T·m +47%, better
Xmax5 mm +16%, better
Sensitivity87.3 dB −2.4, worse
CIARECW161N
No current priceFs52 Hz +11%, worse
Qts0.35 –
Vas17.4 L −16%, better
BL6.1 T·m –
Xmax4 mm −7%
Sensitivity89.7 dB –
CIARECW169
No current priceFs46 Hz –
Qts0.32 −9%
Vas21.2 L –
BL5.9 T·m –
Xmax5 mm +16%, better
Sensitivity89.3 dB –
HiViS6N
No current priceFs45 Hz −4%
Qts0.35 –
Vas23.4 L +13%, worse
BL7.6 T·m +27%, better
Xmax4.3 mm –
Sensitivity89.4 dB –
HiViSS6N
No current priceFs44 Hz −6%
Qts0.36 –
Vas23.9 L +15%, worse
BL7.6 T·m +27%, better
Xmax4.3 mm –
Sensitivity89.1 dB −0.6
WavecorWF182BD09
No current priceFs33 Hz −30%, better
Qts0.35 –
Vas24.3 L +17%, worse
BL6.5 T·m +8%
Xmax5.5 mm +28%, better
Sensitivity85.8 dB −3.9, worse
HiViD6.4+
No current priceFs44 Hz −6%
Qts0.36 –
Vas13.9 L −33%, better
BL6.6 T·m +10%
Xmax4 mm −7%
Sensitivity86.5 dB −3.2, worse
WavecorWF152BD05
No current priceFs50 Hz +6%
Qts0.33 −6%
Vas9.2 L −56%, better
BL6.3 T·m +6%
Xmax4.5 mm +5%
Sensitivity87.3 dB −2.4, worse
WavecorWF152BD10
No current priceFs49 Hz +4%
Qts0.32 −9%
Vas9.6 L −54%, better
BL5.8 T·m −3%
Xmax4.5 mm +5%
Sensitivity87.4 dB −2.3, worse
KartesianLOM155_VKI
No current priceFs48 Hz –
Qts0.33 −6%
Vas16.6 L −20%, better
BL6.3 T·m +6%
Xmax6 mm +40%, better
Sensitivity89.1 dB −0.6
PRV AudioMT8MB600CF-NDY-4
No current priceFs65 Hz +37%, worse
Qts0.37 +6%
Vas18.8 L −9%
BL9.3 T·m +55%, better
Xmax4.8 mm +10%, better
Sensitivity93.3 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
- SoundImports5.0 out of 53 ratings · Checked 25 Oct 2026Read reviews on SoundImports
Each shop collects its own ratings. Bits shows them as published and doesn't verify them.
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
Falcon Acoustics | £82.44, the lowest price | In stock | Visit shop at Falcon Acoustics | |
Willys-Hifi | £84.96 | 3.1% above the lowest price | Stock not listed | Visit shop at Willys-Hifi |
SoundImports Import VAT and duty may apply | £75.32 | 8 in stock | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr
Recent changes
- 1 OctWillys-Hifi£87.95 → £84.96Down 3.4% from £87.95
- 30 SepWillys-Hifi£86.95 → £87.95Up 1.2% from £86.95
- 26 AugWillys-Hifi£87.95 → £86.95Down 1.1% from £87.95