CIAREHW162
£47.73 · 56% less, betterFs44 Hz +19%, worse
Qts0.33 +3%
Vas24.8 L −22%, better
BL7.5 T·m +4%
Xmax4.5 mm −25%, worse
Sensitivity89.4 dB +1.2
6.5-inch LF driver · Prestige series · 39 mm voice coil · 80 W
SEAS H1456-08 ER18RNX 8Ω
8 Ω · 45–3000 Hz
£113.94
Falcon Acoustics · In stock · All 4 offers
- Fs
- 37Hz
- Xmax
- 6mm
- SPL
- 88dB
- Pe
- 80W
- BL
- 7.2T·m
- Vd
- 82cm³
- Qts
- 0.32
- Vas
- 32L
Published graphs
SEAS H1456-08 ER18RNX is a 6.5-inch 8 ohm LF driver rated at 80 W RMS. The validated T/S data includes Fs 37 Hz, Qts 0.32, Vas 32 L, Xmax 6 mm, sensitivity 88.2 dB, plus 82 cm³ Vd and 95 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 £109.29.
The published T/S values agree with each other
Thiele/Small
- Fs
- 37Hz
- Qts
- 0.32
- Qes
- 0.39
- Qms
- 1.6
- Vas
- 32L
- Re
- 5.9Ω
- Le
- 0.67mH
Motor and cone
- BL
- 7.2T·m
- Sd
- 136cm²
- Mms
- 14g
- Xmax
- 6mm
- Vd †
- 82cm³
- Voice coil
- 39mm
- Flux density
- 1T
Power and response
- Sensitivity †
- 88.2dB
- Manufacturer sensitivity
- 88.5dB
- Power
- 80W
- Impedance
- 8Ω
- Range
- 45–3000Hz
- EBP †
- 95 · Sealed or vented
Size and mounting
- Weight
- 1.9kg
Other published values
- Cms
- 1.30mm/N
- Rms
- 2.20kg/s
- Xmech
- 11
- Power Peak
- 250
† Calculated by bits from the published values
What this validation status means
Everything else SEAS lists
LF · Primary · 6.5″
- BL
- 7.2T·m
- Fs
- 37Hz
- Le
- 0.67mH
- Re
- 5.9Ω
- Sd
- 136cm²
- Cms
- 1.30mm/N
- Mms
- 14g
- Qes
- 0.39
- Qms
- 1.6
- Qts
- 0.32
- Rms
- 2.20kg/s
- SPL
- 88.2dB
- Vas
- 32L
- Xmax
- 6mm
- Xmech
- 11
- Power
- 80W
- Impedance
- 8Ω
- Power Peak
- 250
- Flux density
- 1T
- Sensitivity
- 88.5dB
- Low limit
- 45Hz
- Calculated sensitivity †
- 88.2dB
- High limit
- 3000Hz
- Manufacturer sensitivity
- 88.5dB
- Voice coil
- 39mm
- Weight
- 1.9kg
02
Compare
Same-size drivers, compared with the H1456-08 ER18RNX. Clear differences are green when better and red when worse.
This driverH1456-08 ER18RNX
Best price
£109.29
Fs
37 Hz
Qts
0.32
Vas
32 L
BL
7.2 T·m
Xmax
6 mm
Sensitivity
88.2 dB
Power
80 W
Dayton AudioRS180-8
£59.83 · 45% less, betterFs36 Hz −4%
Qts0.31 −3%
Vas24.4 L −24%, better
BL7.8 T·m +9%
Xmax6 mm –
Sensitivity86.3 dB −1.9
Dayton AudioRS180P-8
£59.83 · 45% less, betterFs46 Hz +24%, worse
Qts0.34 +6%
Vas22 L −31%, better
BL7.2 T·m –
Xmax6 mm –
Sensitivity88.8 dB +0.6
HiViE6.5
£63.57 · 42% less, betterFs37 Hz –
Qts0.32 –
Vas31 L −3%
BL8.1 T·m +12%, better
Xmax5.8 mm −4%
Sensitivity88.3 dB –
SB AcousticsSB17NAC35-4
£71.13 · 35% less, betterFs32 Hz −14%, better
Qts0.32 –
Vas33 L +3%
BL5.2 T·m −28%, worse
Xmax5.5 mm −8%
Sensitivity87.1 dB −1.1
Dayton AudioRS180S-8
£78.62 · 28% less, betterFs38 Hz –
Qts0.36 +12%, worse
Vas23 L −28%, better
BL7.3 T·m –
Xmax6 mm –
Sensitivity86 dB −2.2, worse
SB AcousticsSB17CRC35-4
£85.53 · 22% less, betterFs32 Hz −15%, better
Qts0.32 –
Vas35.5 L +11%, worse
BL5 T·m −31%, worse
Xmax5.5 mm −8%
Sensitivity87 dB −1.2
Dayton AudioPS180-8
£89.75 · 18% less, betterFs59 Hz +58%, worse
Qts0.33 +3%
Vas27.6 L −14%, better
BL6.8 T·m −5%
Xmax4.6 mm −23%, worse
Sensitivity93.9 dB +5.7, better
SEASH1215-08 CA18RNX
£101.94 · 7% less, betterFs35 Hz −5%
Qts0.31 −3%
Vas33 L +3%
BL7.2 T·m –
Xmax6 mm –
Sensitivity87.9 dB –
WavecorWF182BD12
£118.19 · 8% more, worseFs30 Hz −20%, better
Qts0.37 +16%, worse
Vas32.4 L –
BL8.2 T·m +14%, better
Xmax5.5 mm −8%
Sensitivity85.4 dB −2.8, worse
WavecorWF182BD17
£121.93 · 12% more, worseFs33 Hz −11%, better
Qts0.35 +9%
Vas24.3 L −24%, better
BL6.5 T·m −10%
Xmax5.5 mm −8%
Sensitivity85.8 dB −2.4, worse
£125.61 · 15% more, worse
Fs43 Hz +16%, worse
Qts0.37 +16%, worse
Vas22 L −31%, better
BL6.9 T·m −4%
Xmax6 mm –
Sensitivity87.9 dB –
SB AcousticsMW16P-8
£145.30 · 33% more, worseFs29 Hz −22%, better
Qts0.33 +3%
Vas48 L +50%, worse
BL6.3 T·m −13%, worse
Xmax6 mm –
Sensitivity87.3 dB −0.9
SB AcousticsMW16PNW-8
£146.49 · 34% more, worseFs29 Hz −22%, better
Qts0.32 –
Vas49.9 L +56%, worse
BL6.3 T·m −13%, worse
Xmax6 mm –
Sensitivity87.6 dB −0.6
SB AcousticsMW16P-12
£146.49 · 34% more, worseFs31 Hz −17%, better
Qts0.37 +16%, worse
Vas47.3 L +48%, worse
BL7.4 T·m –
Xmax6.2 mm +3%
Sensitivity87.3 dB −0.9
Scanspeak18W/8542-10
£157.04 · 44% more, worseFs43 Hz +16%, worse
Qts0.35 +9%
Vas26 L −19%, better
BL6.9 T·m −4%
Xmax6.5 mm +8%
Sensitivity88.7 dB +0.5
WavecorWF182BD20
£188.39 · 72% more, worseFs30 Hz −20%, better
Qts0.37 +16%, worse
Vas32.4 L –
BL8.2 T·m +14%, better
Xmax5.5 mm −8%
Sensitivity85.4 dB −2.8, worse
£239.40 · 119% more, worse
Fs40 Hz +8%
Qts0.34 +6%
Vas24 L −25%, better
BL7 T·m –
Xmax7 mm +17%, better
Sensitivity87.8 dB –
SB AcousticsMW16TX-8
£250.36 · 129% more, worseFs29 Hz −21%, better
Qts0.33 +3%
Vas48 L +50%, worse
BL6.3 T·m −13%, worse
Xmax6 mm –
Sensitivity87.4 dB −0.8
AccutonC158-8-085
£326.51 · 199% more, worseFs37 Hz –
Qts0.36 +12%, worse
Vas27.3 L −15%, better
BL7.7 T·m +7%
Xmax5 mm −17%, worse
Sensitivity87.5 dB −0.7
No current price
Fs35 Hz −5%
Qts0.34 +6%
Vas31 L −3%
BL7.4 T·m –
Xmax7 mm +17%, better
Sensitivity87.5 dB −0.7
WavecorWF182BD10
No current priceFs29 Hz −23%, better
Qts0.31 −3%
Vas32.4 L –
BL6.5 T·m −10%
Xmax5.5 mm −8%
Sensitivity85.7 dB −2.5, worse
WavecorWF182BD18
No current priceFs29 Hz −23%, better
Qts0.31 −3%
Vas32.4 L –
BL6.5 T·m −10%
Xmax5.5 mm −8%
Sensitivity85.7 dB −2.5, worse
RS SpeakersW 174.38 FIBONACCI
No current priceFs38 Hz –
Qts0.38 +19%, worse
Vas22.9 L −28%, better
BL7.2 T·m –
Xmax6 mm –
Sensitivity87 dB −1.2
Audio Technology18 H 52 17 06 SD
No current priceFs36 Hz –
Qts0.28 −12%, better
Vas34 L +6%
BL6.6 T·m −8%
Xmax6.3 mm +5%
Sensitivity88.8 dB +0.6
KartesianLOM155_VKI
No current priceFs48 Hz +30%, worse
Qts0.33 +3%
Vas16.6 L −48%, better
BL6.3 T·m −12%, worse
Xmax6 mm –
Sensitivity89.1 dB +0.9
WavecorWF182BD09
No current priceFs33 Hz −11%, better
Qts0.35 +9%
Vas24.3 L −24%, better
BL6.5 T·m −10%
Xmax5.5 mm −8%
Sensitivity85.8 dB −2.4, worse
PurifiPTT6.5W04-NAA-08
No current priceFs33 Hz −11%, better
Qts0.30 −6%
Vas23.3 L −27%, better
BL7.7 T·m +7%
Xmax5.9 mm –
Sensitivity86.3 dB −1.9
CIARECW169
No current priceFs46 Hz +24%, worse
Qts0.32 –
Vas21.2 L −34%, better
BL5.9 T·m −17%, worse
Xmax5 mm −17%, worse
Sensitivity89.3 dB +1.1
VoltBM165.4
No current priceFs32 Hz −14%, better
Qts0.30 −6%
Vas32.3 L –
BL9.6 T·m +33%, better
Xmax6 mm –
Sensitivity87.2 dB −1
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 54 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 | £113.94, the lowest price | In stock | Visit shop at Falcon Acoustics | |
RumoH Import VAT and duty may apply | £109.29 | Stock not listed | Visit shop at RumoH | |
Lautsprechershop Import VAT and duty may apply | £118.73 | 4.2% above the lowest price | Special order | Visit shop at Lautsprechershop |
SoundImports Import VAT and duty may apply | £121.37 | 6.5% above the lowest price | Back order | Visit shop at SoundImports |
Best price over time
Tracked since 21 Oct