CelestionTF1225
£83.50 · 70% less, betterFs56 Hz +159%, worse
Qts0.37 –
Vas67.3 L +10%
BL14.3 T·m −46%, worse
Xmax4.5 mm −68%, worse
Sensitivity96.4 dB +12.7, better
12-inch LF driver · 700 W
Dayton Audio RSS315HO-44 4Ω
4 Ω · 20–500 Hz
£276.27
SteadySoundImports · 2 in stock · Ships from Netherlands · All 1 offer
- Fs
- 22Hz
- Xmax
- 14mm
- SPL
- 84dB
- Pe
- 700W
- BL
- 26.5T·m
- Vd
- 710cm³
- Qts
- 0.37
- Vas
- 61L
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
impedance
Impedance response
240 plotted pointsMedium confidence1,476 selected pixels of 1,521
Dayton Audio RSS315HO-44 is a 12-inch 4 ohm LF driver rated at 700 W RMS. The validated T/S data includes Fs 22 Hz, Qts 0.37, Vas 61.3 L, Xmax 14 mm, sensitivity 83.7 dB, plus 710 cm³ Vd and 52 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 £276.27.
The published T/S values agree with each other
Thiele/Small
- Fs
- 22Hz
- Qts
- 0.37
- Qes
- 0.41
- Qms
- 3.7
- Vas
- 61.3L
- Re
- 6.5Ω
- Le
- 3.17mH
Motor and cone
- BL
- 26.5T·m
- Sd
- 507cm²
- Mms
- 328g
- Xmax
- 14mm
- Vd †
- 710cm³
Power and response
- Sensitivity †
- 83.7dB
- Manufacturer sensitivity
- 84.6dB
- Power
- 700W
- Impedance
- 4Ω
- Range
- 20–500Hz
- EBP †
- 52 · Sealed or vented
Size and mounting
- Diameter
- 314mm
- Cutout
- 282mm
- Depth
- 146mm
- Weight
- 11.5kg
Other published values
- Cms
- 0.17mm/N
- Power Peak
- 1400
† Calculated by bits from the published values
What this validation status means
Everything else Dayton Audio lists
LF · Primary · 12″
- BL
- 26.5T·m
- Fs
- 22Hz
- Le
- 3.17mH
- Re
- 6.5Ω
- Sd
- 507cm²
- Cms
- 0.17mm/N
- Mms
- 328g
- Qes
- 0.41
- Qms
- 3.7
- Qts
- 0.37
- SPL
- 83.7dB
- Vas
- 61.3L
- Xmax
- 14mm
- Power
- 700W
- Impedance
- 4Ω
- Power Peak
- 1400
- Sensitivity
- 84.6dB
- Low limit
- 20Hz
- Calculated sensitivity †
- 83.7dB
- High limit
- 500Hz
- Manufacturer sensitivity
- 84.6dB
- Weight
- 11.5kg
- Diameter
- 314mm
- Depth
- 146mm
- Cutout
- 282mm
02
Compare
Same-size drivers, compared with the RSS315HO-44. Clear differences are green when better and red when worse.
This driverRSS315HO-44
Best price
£276.27
Fs
22 Hz
Qts
0.37
Vas
61.3 L
BL
26.5 T·m
Xmax
14 mm
Sensitivity
83.7 dB
Power
700 W
CelestionTF1230S
£85.00 · 69% less, betterFs60 Hz +180%, worse
Qts0.37 –
Vas54.4 L −11%, better
BL16.6 T·m −38%, worse
Xmax4.5 mm −68%, worse
Sensitivity96.5 dB +12.8, better
Beyma12MCS500
£134.74 · 51% less, betterFs57 Hz +165%, worse
Qts0.36 –
Vas57 L −7%
BL17.6 T·m −34%, worse
Xmax8 mm −43%, worse
Sensitivity96.5 dB +12.8, better
CelestionCF1230BMB
£145.00 · 48% less, betterFs43 Hz +102%, worse
Qts0.38 –
Vas60.7 L –
BL18.4 T·m −31%, worse
Xmax7 mm −50%, worse
Sensitivity92.8 dB +9.1, better
CelestionTN1230
£145.00 · 48% less, betterFs47 Hz +117%, worse
Qts0.35 −5%
Vas64.3 L +5%
BL18.6 T·m −30%, worse
Xmax3.8 mm −73%, worse
Sensitivity94.5 dB +10.8, better
PRV Audio12W1600
£149.54 · 46% less, betterFs51 Hz +138%, worse
Qts0.39 +5%
Vas47.0 L −23%, better
BL20.4 T·m −23%, worse
Xmax10.5 mm −25%, worse
Sensitivity94 dB +10.3, better
FaitalPRO12RS550
£158.25 · 43% less, betterFs42 Hz +95%, worse
Qts0.37 –
Vas45.4 L −26%, better
BL20.5 T·m −23%, worse
Xmax9.3 mm −34%, worse
Sensitivity91.4 dB +7.7, better
EminenceOMEGA PRO-12-2KW-8
£172.05 · 38% less, betterFs48 Hz +124%, worse
Qts0.39 +5%
Vas49.5 L −19%, better
BL20.4 T·m −23%, worse
Xmax7.1 mm −49%, worse
Sensitivity93.4 dB +9.7, better
SB AudienceNERO-12MWN700D
£179.95 · 35% less, betterFs53 Hz +145%, worse
Qts0.38 –
Vas52.5 L −14%, better
BL17.9 T·m −32%, worse
Xmax7.3 mm −48%, worse
Sensitivity94.9 dB +11.2, better
Beyma12LX60V2
£184.93 · 33% less, betterFs49 Hz +128%, worse
Qts0.38 –
Vas43 L −30%, better
BL20 T·m −25%, worse
Xmax9 mm −36%, worse
Sensitivity93 dB +9.3, better
CIARE12.00SW
£199.00 · 28% less, betterFs29 Hz +35%, worse
Qts0.29 −22%, better
Vas55 L −10%, better
BL19.5 T·m −26%, worse
Xmax13.5 mm −4%
Sensitivity88.1 dB +4.4, better
CelestionFTR12-4080DL
£200.12 · 28% less, betterFs29 Hz +34%, worse
Qts0.30 −18%, better
Vas68.6 L +12%, worse
BL24.1 T·m −9%
Xmax13.6 mm –
Sensitivity88.8 dB +5.1, better
Dayton AudioMX12-22
£209.29 · 24% less, betterFs29 Hz +34%, worse
Qts0.35 −5%
Vas45.6 L −26%, better
BL21.5 T·m −19%, worse
Xmax15.5 mm +11%, better
Sensitivity86.5 dB +2.8, better
FaitalPRO12XL1200
£249.10 · 10% less, betterFs50 Hz +133%, worse
Qts0.42 +14%, worse
Vas25 L −59%, better
BL23.6 T·m −11%, worse
Xmax12.4 mm −11%, worse
Sensitivity90.6 dB +6.9, better
FaitalPRO12RS1066
£250.36 · 9% less, betterFs42 Hz +95%, worse
Qts0.33 −11%, better
Vas31.5 L −49%, better
BL24.8 T·m −6%
Xmax12.4 mm −11%, worse
Sensitivity90.4 dB +6.7, better
Dayton AudioRSS315HF-4
£251.11 · 9% less, betterFs24 Hz +13%, worse
Qts0.39 +5%
Vas84.1 L +37%, worse
BL14.0 T·m −47%, worse
Xmax14.3 mm –
Sensitivity86.3 dB +2.6, better
FaitalPRO12HX240
£325.71 · 18% more, worseFs56 Hz +160%, worse
Qts0.37 –
Vas61.1 L –
BL16 T·m −40%, worse
Xmax7.4 mm −47%, worse
Sensitivity96.5 dB +12.8, better
FaitalPRO12HX500
£386.84 · 40% more, worseFs55 Hz +156%, worse
Qts0.37 –
Vas57.8 L −6%
BL17.4 T·m −34%, worse
Xmax9.3 mm −34%, worse
Sensitivity95.9 dB +12.2, better
Oberton12NSW600
No current priceFs42 Hz +95%, worse
Qts0.32 −15%, better
Vas62.3 L –
BL20.2 T·m −24%, worse
Xmax14.3 mm –
Sensitivity93.5 dB +9.8, better
FaitalPRO12FH530
No current priceFs45 Hz +109%, worse
Qts0.39 +5%
Vas75.6 L +23%, worse
BL24.1 T·m −9%
Xmax7.5 mm −46%, worse
Sensitivity94.3 dB +10.6, better
Dayton AudioSS12-22
No current priceFs27 Hz +26%, worse
Qts0.35 −5%
Vas49.4 L −19%, better
BL24.3 T·m −8%
Xmax23 mm +64%, better
Sensitivity86 dB +2.3, better
PRV Audio12W2000
No current priceFs53 Hz +148%, worse
Qts0.37 –
Vas38.7 L −37%, better
BL22.6 T·m −15%, worse
Xmax10.3 mm −27%, worse
Sensitivity93.9 dB +10.2, better
JensenC12D-4
No current priceFs63 Hz +191%, worse
Qts0.37 –
Vas63.8 L +4%
BL10.1 T·m −62%, worse
Xmax1 mm −93%, worse
Sensitivity97.5 dB +13.8, better
Oberton12CX1
No current priceFs58 Hz +168%, worse
Qts0.37 –
Vas68.5 L +12%, worse
BL13.9 T·m −47%, worse
Xmax4.3 mm −70%, worse
Sensitivity97.2 dB +13.5, better
EminenceFS12.30A8
No current priceFs55 Hz +156%, worse
Qts0.36 –
Vas61 L –
BL17 T·m −36%, worse
Xmax4.3 mm −69%, worse
Sensitivity96.3 dB +12.6, better
JensenN12D-4
No current priceFs63 Hz +191%, worse
Qts0.37 –
Vas63.8 L +4%
BL10.1 T·m −62%, worse
Xmax1 mm −93%, worse
Sensitivity97.4 dB +13.7, better
Oberton12B45V
No current priceFs48 Hz +123%, worse
Qts0.35 −4%
Vas58.5 L −5%
BL16.6 T·m −37%, worse
Xmax10.5 mm −25%, worse
Sensitivity94.4 dB +10.7, better
P.Audio12FT-88MB
No current priceFs48 Hz +123%, worse
Qts0.37 –
Vas45.4 L −26%, better
BL19.1 T·m −28%, worse
Xmax4.7 mm −66%, worse
Sensitivity93.1 dB +9.4, better
No photo
PHL Audio4021
No current priceFs35 Hz +63%, worse
Qts0.35 −5%
Vas70 L +14%, worse
BL20.5 T·m −23%, worse
Xmax7.5 mm −46%, worse
Sensitivity91.2 dB +7.5, better
PeerlessNCP-1230R01-08
No current priceFs63 Hz +193%, worse
Qts0.37 –
Vas46.3 L −24%, better
BL18.1 T·m −32%, worse
Xmax7.9 mm −43%, worse
Sensitivity96.7 dB +13, 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 55 ratings · Checked 26 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 |
|---|---|---|---|---|
SoundImports Import VAT and duty may apply | £276.27, the lowest price | 2 in stock | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr