CelestionTF1220
£63.48 · 75% less, betterFs56 Hz +131%, worse
Qts0.39 –
Vas72.8 L −13%, better
BL13.9 T·m –
Xmax4 mm −72%, worse
Sensitivity96.6 dB +10.3, better
12-inch LF driver · 400 W
Dayton Audio RSS315HF-4 4Ω
4 Ω · 23–1000 Hz
£251.11
<0.1%Audiophonics · In stock · Ships from France · All 3 offers
- Fs
- 24Hz
- Xmax
- 14.3mm
- SPL
- 86dB
- Pe
- 400W
- BL
- 14.0T·m
- Vd
- 736cm³
- Qts
- 0.39
- Vas
- 84L
Dayton Audio RSS315HF-4 is a 12-inch 4 ohm LF driver rated at 400 W RMS. The validated T/S data includes Fs 24 Hz, Qts 0.39, Vas 84.1 L, Xmax 14.3 mm, sensitivity 86.3 dB, plus 736 cm³ Vd and 54 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 £251.11.
The published T/S values agree with each other
Thiele/Small
- Fs
- 24Hz
- Qts
- 0.39
- Qes
- 0.45
- Qms
- 2.8
- Vas
- 84.1L
- Re
- 3.1Ω
- Le
- 0.96mH
Motor and cone
- BL
- 14.0T·m
- Sd
- 515cm²
- Mms
- 188g
- Xmax
- 14.3mm
- Vd †
- 736cm³
Power and response
- Sensitivity †
- 86.3dB
- Manufacturer sensitivity
- 90.3dB
- Power
- 400W
- Impedance
- 4Ω
- Range
- 23–1000Hz
- EBP †
- 54 · Sealed or vented
Size and mounting
- Diameter
- 314mm
- Cutout
- 282mm
- Depth
- 146mm
- Weight
- 11.3kg
Other published values
- Cms
- 0.23mm/N
- Power Peak
- 800
Sensitivity shows 86.3 dB, calculated from the T/S values. Dayton Audio publishes 90.3 dB, 4.0 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Dayton Audio lists
LF · Primary · 12″
- BL
- 14.0T·m
- Fs
- 24Hz
- Le
- 0.96mH
- Re
- 3.1Ω
- Sd
- 515cm²
- Cms
- 0.23mm/N
- Mms
- 188g
- Qes
- 0.45
- Qms
- 2.8
- Qts
- 0.39
- SPL
- 86.3dB
- Vas
- 84.1L
- Xmax
- 14.3mm
- Power
- 400W
- Impedance
- 4Ω
- Power Peak
- 800
- Sensitivity
- 90.3dB
- Low limit
- 23Hz
- Calculated sensitivity †
- 86.3dB
- High limit
- 1000Hz
- Manufacturer sensitivity
- 90.3dB
- Weight
- 11.3kg
- Diameter
- 314mm
- Depth
- 146mm
- Cutout
- 282mm
02
Compare
Same-size drivers, compared with the RSS315HF-4. Clear differences are green when better and red when worse.
This driverRSS315HF-4
Best price
£251.11
Fs
24 Hz
Qts
0.39
Vas
84.1 L
BL
14.0 T·m
Xmax
14.3 mm
Sensitivity
86.3 dB
Power
400 W
PRV Audio12W750A
£63.52 · 75% less, betterFs60 Hz +147%, worse
Qts0.43 +10%, worse
Vas81 L −4%
BL14.3 T·m –
Xmax3.6 mm −75%, worse
Sensitivity98 dB +11.7, better
CelestionK12H-100TC
£69.50 · 72% less, betterFs56 Hz +130%, worse
Qts0.40 –
Vas72.0 L −14%, better
BL13.6 T·m −3%
Xmax3 mm −79%, worse
Sensitivity96.2 dB +9.9, better
GRS12SW-4HE
£70.29 · 72% less, betterFs22 Hz −9%
Qts0.43 +10%, worse
Vas80.4 L −4%
BL16.2 T·m +16%, better
Xmax12.5 mm −13%, worse
Sensitivity84.5 dB −1.8
£72.00 · 71% less, better
Fs47 Hz +94%, worse
Qts0.40 –
Vas80 L −5%
BL15.6 T·m +12%, better
Xmax5 mm −65%, worse
Sensitivity94.9 dB +8.6, better
FaitalPRO12FE300
£76.11 · 70% less, betterFs47 Hz +94%, worse
Qts0.44 +13%, worse
Vas81.4 L −3%
BL10.9 T·m −22%, worse
Xmax5.5 mm −62%, worse
Sensitivity94.8 dB +8.5, better
CelestionTF1225
£83.50 · 67% less, betterFs56 Hz +130%, worse
Qts0.37 −5%
Vas67.3 L −20%, better
BL14.3 T·m –
Xmax4.5 mm −69%, worse
Sensitivity96.4 dB +10.1, better
EminenceDELTA-12A
£98.74 · 61% less, betterFs55 Hz +127%, worse
Qts0.43 +10%, worse
Vas81.3 L −3%
BL13.5 T·m −4%
Xmax2.4 mm −83%, worse
Sensitivity96.7 dB +10.4, better
Dayton AudioDCS305-4
£116.39 · 54% less, betterFs24 Hz –
Qts0.40 –
Vas92.3 L +10%
BL13.7 T·m –
Xmax9.3 mm −35%, worse
Sensitivity86.9 dB +0.6
FaitalPRO12PR300
£135.64 · 46% less, betterFs50 Hz +107%, worse
Qts0.41 +5%
Vas73.9 L −12%, better
BL11.8 T·m −16%, worse
Xmax4.9 mm −66%, worse
Sensitivity95.5 dB +9.2, better
FaitalPRO12PR310
£135.90 · 46% less, betterFs50 Hz +107%, worse
Qts0.42 +8%
Vas77.3 L −8%
BL11.2 T·m −20%, worse
Xmax4.9 mm −66%, worse
Sensitivity95.5 dB +9.2, better
Sica12 SR 3 CP
£154.90 · 38% less, betterFs37 Hz +53%, worse
Qts0.40 –
Vas60.9 L −28%, better
BL16.6 T·m +18%, better
Xmax8 mm −44%, worse
Sensitivity90.3 dB +4, better
Sica12 PF 3
£166.62 · 34% less, betterFs47 Hz +94%, worse
Qts0.39 –
Vas76.5 L −9%
BL15.4 T·m +10%
Xmax5.5 mm −62%, worse
Sensitivity94.8 dB +8.5, better
LavoceCSF122.50K
£168.20 · 33% less, betterFs47 Hz +94%, worse
Qts0.42 +8%
Vas89.8 L +7%
BL13.9 T·m –
Xmax6.3 mm −56%, worse
Sensitivity95.2 dB +8.9, better
EminenceLAB 12
£194.49 · 23% less, betterFs22 Hz −9%
Qts0.38 –
Vas125.2 L +49%, worse
BL15 T·m +7%
Xmax13 mm −9%
Sensitivity87.4 dB +1.1
CelestionFTX1225
£239.00 · 5% lessFs47 Hz +95%, worse
Qts0.40 –
Vas84.6 L –
BL14 T·m –
Xmax6 mm −58%, worse
Sensitivity95.1 dB +8.8, better
FaitalPRO12HX230
£250.31 · Same priceFs55 Hz +127%, worse
Qts0.43 +10%, worse
Vas67.7 L −20%, better
BL14.1 T·m –
Xmax7.4 mm −48%, worse
Sensitivity95.9 dB +9.6, better
LavoceCAF123.00T
£257.89 · 3% moreFs53 Hz +119%, worse
Qts0.36 −8%
Vas71.4 L −15%, better
BL15.2 T·m +9%
Xmax6 mm −58%, worse
Sensitivity96.4 dB +10.1, better
Dayton AudioRSS315HFA-8
£258.98 · 3% moreFs22 Hz −8%
Qts0.45 +15%, worse
Vas97.2 L +16%, worse
BL18 T·m +29%, better
Xmax14.3 mm –
Sensitivity85 dB −1.3
LavoceCAF123.00TH
£268.19 · 7% more, worseFs53 Hz +119%, worse
Qts0.36 −8%
Vas71.4 L −15%, better
BL15.2 T·m +9%
Xmax6 mm −58%, worse
Sensitivity96.4 dB +10.1, better
Dayton AudioRSS315HO-44
£276.27 · 10% more, worseFs22 Hz −11%, better
Qts0.37 −5%
Vas61.3 L −27%, better
BL26.5 T·m +89%, better
Xmax14 mm –
Sensitivity83.7 dB −2.6, worse
No photo
PHL Audio4511
No current priceFs48 Hz +98%, worse
Qts0.40 –
Vas74.1 L −12%, better
BL15.1 T·m +8%
Xmax7 mm −51%, worse
Sensitivity94.6 dB +8.3, better
JensenBS12N250A-8
No current priceFs47 Hz +94%, worse
Qts0.43 +10%, worse
Vas81.3 L −3%
BL14.4 T·m –
Xmax5.5 mm −62%, worse
Sensitivity94.8 dB +8.5, better
Sica12 L1 2.5 SL
No current priceFs48 Hz +96%, worse
Qts0.36 −8%
Vas81.8 L –
BL14.2 T·m –
Xmax3.7 mm −74%, worse
Sensitivity95.7 dB +9.4, better
Oberton12CX1
No current priceFs58 Hz +138%, worse
Qts0.37 −5%
Vas68.5 L −19%, better
BL13.9 T·m –
Xmax4.3 mm −70%, worse
Sensitivity97.2 dB +10.9, better
PRV Audio12MR1000
No current priceFs49 Hz +104%, worse
Qts0.39 –
Vas92.3 L +10%
BL15.9 T·m +14%, better
Xmax3 mm −79%, worse
Sensitivity96.5 dB +10.2, better
CelestionTF1230SL
No current priceFs57 Hz +135%, worse
Qts0.39 –
Vas53.8 L −36%, better
BL15.7 T·m +12%, better
Xmax6 mm −58%, worse
Sensitivity95.6 dB +9.3, better
Sica12 C 2 CP
No current priceFs58 Hz +141%, worse
Qts0.45 +15%, worse
Vas74.3 L −12%, better
BL13.7 T·m –
Xmax4.5 mm −69%, worse
Sensitivity96.8 dB +10.5, better
Acoustic EleganceTD12S-8
No current priceFs32 Hz +30%, worse
Qts0.34 −13%, better
Vas160 L +90%, worse
BL13.3 T·m −5%
Xmax14 mm –
Sensitivity93.2 dB +6.9, better
CIAREHSB322
No current priceFs36 Hz +49%, worse
Qts0.37 −5%
Vas83 L –
BL17 T·m +22%, better
Xmax7.5 mm −48%, worse
Sensitivity91.9 dB +5.6, 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 513 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 |
|---|---|---|---|---|
Audiophonics Import VAT and duty may apply | £251.11, the lowest price | In stock | Visit shop at Audiophonics | |
SoundImports Import VAT and duty may apply | £251.15 | Back order | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr