GRS12PT-8
£48.62 · 81% less, betterFs35 Hz +58%, worse
Qts0.39 −13%, better
Vas112.1 L +15%, worse
BL17.4 T·m −3%
Xmax7.8 mm −45%, worse
Sensitivity92.8 dB +7.8, better
12-inch LF driver · 400 W
Dayton Audio RSS315HFA-8 8Ω
8 Ω · 25–1500 Hz
£258.98
1.8%Audiophonics · In stock · Ships from France · All 2 offers
- Fs
- 22Hz
- Xmax
- 14.3mm
- SPL
- 85dB
- Pe
- 400W
- BL
- 18T·m
- Vd
- 725cm³
- Qts
- 0.45
- Vas
- 97L
Dayton Audio RSS315HFA-8 is a 12-inch 8 ohm LF driver rated at 400 W RMS. The validated T/S data includes Fs 22 Hz, Qts 0.45, Vas 97.2 L, Xmax 14.3 mm, sensitivity 85 dB, plus 725 cm³ Vd and 41 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 £258.98.
The published T/S values agree with each other
Thiele/Small
- Fs
- 22Hz
- Qts
- 0.45
- Qes
- 0.54
- Qms
- 2.5
- Vas
- 97.2L
- Re
- 6.5Ω
- Le
- 1.56mH
Motor and cone
- BL
- 18T·m
- Sd
- 507cm²
- Mms
- 194g
- Xmax
- 14.3mm
- Vd †
- 725cm³
Power and response
- Sensitivity †
- 85dB
- Manufacturer sensitivity
- 85.7dB
- Power
- 400W
- Impedance
- 8Ω
- Range
- 25–1500Hz
- EBP †
- 41 · Leans sealed
Size and mounting
- Diameter
- 314mm
- Cutout
- 282mm
- Depth
- 146mm
- Weight
- 11.1kg
Other published values
- Cms
- 0.27mm/N
- Power Peak
- 700
† Calculated by bits from the published values
What this validation status means
Everything else Dayton Audio lists
LF · Primary · 12″
- BL
- 18T·m
- Fs
- 22Hz
- Le
- 1.56mH
- Re
- 6.5Ω
- Sd
- 507cm²
- Cms
- 0.27mm/N
- Mms
- 194g
- Qes
- 0.54
- Qms
- 2.5
- Qts
- 0.45
- SPL
- 85dB
- Vas
- 97.2L
- Xmax
- 14.3mm
- Power
- 400W
- Impedance
- 8Ω
- Power Peak
- 700
- Sensitivity
- 85.7dB
- Low limit
- 25Hz
- Calculated sensitivity †
- 85dB
- High limit
- 1500Hz
- Manufacturer sensitivity
- 85.7dB
- Weight
- 11.1kg
- Diameter
- 314mm
- Depth
- 146mm
- Cutout
- 282mm
02
Compare
Same-size drivers, compared with the RSS315HFA-8. Clear differences are green when better and red when worse.
This driverRSS315HFA-8
Best price
£258.98
Fs
22 Hz
Qts
0.45
Vas
97.2 L
BL
18 T·m
Xmax
14.3 mm
Sensitivity
85 dB
Power
400 W
PRV Audio12W750A
£63.52 · 75% less, betterFs60 Hz +170%, worse
Qts0.43 −4%
Vas81 L −17%, better
BL14.3 T·m −21%, worse
Xmax3.6 mm −75%, worse
Sensitivity98 dB +13, better
PRV Audio12W800A
£67.26 · 74% less, betterFs50 Hz +124%, worse
Qts0.47 +4%
Vas93.9 L −3%
BL12.7 T·m −29%, worse
Xmax5.7 mm −60%, worse
Sensitivity95.8 dB +10.8, better
GRS12SW-4HE
£70.29 · 73% less, betterFs22 Hz –
Qts0.43 −4%
Vas80.4 L −17%, better
BL16.2 T·m −10%, worse
Xmax12.5 mm −13%, worse
Sensitivity84.5 dB −0.5
PeerlessFSL-1225R02-08
£71.81 · 72% less, betterFs63 Hz +184%, worse
Qts0.44 –
Vas54.8 L −44%, better
BL14.9 T·m −17%, worse
Xmax5.3 mm −63%, worse
Sensitivity96.5 dB +11.5, better
£75.00 · 71% less, better
Fs50 Hz +125%, worse
Qts0.51 +13%, worse
Vas66 L −32%, better
BL16.4 T·m −9%
Xmax5.5 mm −62%, worse
Sensitivity94 dB +9, better
CIAREFXI12
£96.29 · 63% less, betterFs55 Hz +148%, worse
Qts0.44 –
Vas70 L −28%, better
BL13.9 T·m −23%, worse
Xmax5 mm −65%, worse
Sensitivity95.8 dB +10.8, better
EminenceDELTA 12B
£98.74 · 62% less, betterFs58 Hz +161%, worse
Qts0.48 +7%
Vas87 L −10%, better
BL16 T·m −11%, worse
Xmax2.7 mm −81%, worse
Sensitivity97.2 dB +12.2, better
EminenceDELTA-12A
£98.74 · 62% less, betterFs55 Hz +148%, worse
Qts0.43 −4%
Vas81.3 L −16%, better
BL13.5 T·m −25%, worse
Xmax2.4 mm −83%, worse
Sensitivity96.7 dB +11.7, better
EminenceTHE TONKER
£102.56 · 60% less, betterFs89 Hz +301%, worse
Qts0.47 +4%
Vas34.1 L −65%, better
BL17.4 T·m −3%
Xmax0.8 mm −94%, worse
Sensitivity98.9 dB +13.9, better
EminenceDELTA-12LFA
£104.72 · 60% less, betterFs51 Hz +130%, worse
Qts0.47 +4%
Vas67.9 L −30%, better
BL14.1 T·m −22%, worse
Xmax4.8 mm −66%, worse
Sensitivity94.5 dB +9.5, better
FaitalPRO12RS430
£158.25 · 39% less, betterFs30 Hz +35%, worse
Qts0.35 −22%, better
Vas131.2 L +35%, worse
BL18 T·m –
Xmax13.6 mm −5%
Sensitivity92 dB +7, better
LavoceCSF122.50K
£168.20 · 35% less, betterFs47 Hz +112%, worse
Qts0.42 −7%
Vas89.8 L −8%
BL13.9 T·m −23%, worse
Xmax6.3 mm −56%, worse
Sensitivity95.2 dB +10.2, better
EminenceLAB 12
£194.49 · 25% less, betterFs22 Hz –
Qts0.38 −16%, better
Vas125.2 L +29%, worse
BL15 T·m −17%, worse
Xmax13 mm −9%
Sensitivity87.4 dB +2.4, better
SB AcousticsSB34SWPL76-4
£200.87 · 22% less, betterFs19 Hz −14%, better
Qts0.32 −29%, better
Vas79 L −19%, better
BL18.3 T·m –
Xmax15 mm +5%
Sensitivity84.2 dB −0.8
Sica12 SR 3 PL
£208.49 · 19% less, betterFs36 Hz +62%, worse
Qts0.42 −7%
Vas60.4 L −38%, better
BL17.0 T·m −5%
Xmax7 mm −51%, worse
Sensitivity90 dB +5, better
VisatonPAW 30 ND
£221.00 · 15% less, betterFs52 Hz +134%, worse
Qts0.46 –
Vas55.4 L −43%, better
BL15.4 T·m −14%, worse
Xmax4 mm −72%, worse
Sensitivity93.9 dB +8.9, better
Dayton AudioRSS315HF-4
£251.11 · 3% lessFs24 Hz +9%
Qts0.39 −13%, better
Vas84.1 L −13%, better
BL14.0 T·m −22%, worse
Xmax14.3 mm –
Sensitivity86.3 dB +1.3
SB AudienceROSSO-12CX350
£251.15 · 3% lessFs49 Hz +121%, worse
Qts0.49 +9%
Vas90.4 L −7%
BL12.1 T·m −33%, worse
Xmax8.2 mm −43%, worse
Sensitivity95.1 dB +10.1, better
Eighteen Sound12NLW9300
£274.84 · 6% more, worseFs47 Hz +112%, worse
Qts0.42 −7%
Vas56 L −42%, better
BL17 T·m −6%
Xmax8 mm −44%, worse
Sensitivity93.1 dB +8.1, better
Eighteen Sound12NTLS3500
£299.50 · 16% more, worseFs41 Hz +85%, worse
Qts0.41 −9%
Vas65 L −33%, better
BL17.8 T·m –
Xmax7.9 mm −45%, worse
Sensitivity92.2 dB +7.2, better
Acoustic EleganceSBP12-8
No current priceFs24 Hz +6%
Qts0.48 +7%
Vas160 L +65%, worse
BL13.1 T·m −27%, worse
Xmax14 mm –
Sensitivity87.9 dB +2.9, better
WavecorSW312WA03
No current priceFs28 Hz +26%, worse
Qts0.48 +7%
Vas61 L −37%, better
BL14.5 T·m −19%, worse
Xmax11.5 mm −20%, worse
Sensitivity86.3 dB +1.3
WavecorSW312WA04
No current priceFs28 Hz +26%, worse
Qts0.48 +7%
Vas61 L −37%, better
BL14.5 T·m −19%, worse
Xmax11.5 mm −20%, worse
Sensitivity86.3 dB +1.3
Sica12 C 2 CP
No current priceFs58 Hz +163%, worse
Qts0.45 –
Vas74.3 L −24%, better
BL13.7 T·m −24%, worse
Xmax4.5 mm −69%, worse
Sensitivity96.8 dB +11.8, better
Sica12 PFS 3
No current priceFs43 Hz +94%, worse
Qts0.47 +4%
Vas58.5 L −40%, better
BL15.9 T·m −12%, worse
Xmax7 mm −51%, worse
Sensitivity91.6 dB +6.6, better
Acoustic EleganceSBP12-4
No current priceFs24 Hz +6%
Qts0.48 +7%
Vas160 L +65%, worse
BL10.5 T·m −42%, worse
Xmax14 mm –
Sensitivity87.9 dB +2.9, better
LavoceFBASS12-20
No current priceFs53 Hz +139%, worse
Qts0.46 –
Vas75.4 L −22%, better
BL13.3 T·m −26%, worse
Xmax4.3 mm −70%, worse
Sensitivity95.5 dB +10.5, better
JensenBS12N250A-8
No current priceFs47 Hz +112%, worse
Qts0.43 −4%
Vas81.3 L −16%, better
BL14.4 T·m −20%, worse
Xmax5.5 mm −62%, worse
Sensitivity94.8 dB +9.8, better
P.AudioGST-12500-V3
No current priceFs56 Hz +152%, worse
Qts0.48 +7%
Vas52.9 L −46%, better
BL15.7 T·m −13%, worse
Xmax3.3 mm −77%, worse
Sensitivity94.6 dB +9.6, 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 54 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 |
|---|---|---|---|---|
Audiophonics Import VAT and duty may apply | £258.98, the lowest price | In stock | Visit shop at Audiophonics | |
SoundImports Import VAT and duty may apply | £263.71 | 1.8% above the lowest price | 10 in stock | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr