CelestionTF1220
£63.48 · 36% less, betterFs56 Hz –
Qts0.39 −10%
Vas72.8 L −10%, better
BL13.9 T·m +3%
Xmax4 mm +67%, better
Sensitivity96.6 dB –
12-inch LF driver · DELTA series · 400 W
Eminence DELTA-12A 8Ω
8 Ω · 54–5000 Hz
£103.95
4.0%Lean Audio · 1 in stock · All 6 offers
- Fs
- 55Hz
- Xmax
- 2.4mm
- SPL
- 97dB
- Pe
- 400W
- BL
- 13.5T·m
- Vd
- 125cm³
- Qts
- 0.43
- Vas
- 81L
Eminence DELTA-12A is a 12-inch 8 ohm LF driver rated at 400 W RMS. The validated T/S data includes Fs 55 Hz, Qts 0.43, Vas 81.3 L, Xmax 2.4 mm, sensitivity 96.7 dB, plus 125 cm³ Vd and 120 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 £98.74.
The published T/S values agree with each other
Thiele/Small
- Fs
- 55Hz
- Qts
- 0.43
- Qes
- 0.46
- Qms
- 5.3
- Vas
- 81.3L
- Re
- 6.3Ω
- Le
- 0.74mH
Motor and cone
- BL
- 13.5T·m
- Sd
- 520cm²
- Mms
- 39g
- Xmax
- 2.4mm
- Vd †
- 125cm³
Power and response
- Sensitivity †
- 96.7dB
- Manufacturer sensitivity
- 98.3dB
- Power
- 400W
- Impedance
- 8Ω
- Range
- 54–5000Hz
- EBP †
- 120 · Leans vented
Size and mounting
- Diameter
- 305.6mm
- Cutout
- 281.2mm
- Bolt circle
- 294.4mm
- Depth
- 135.9mm
- Weight
- 5.2kg
Other published values
- Cms
- 0.21mm/N
- Xmech
- 9.9
- Power Program
- 800
Sensitivity shows 96.7 dB, calculated from the T/S values. Eminence publishes 98.3 dB, 1.6 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Eminence lists
LF · Primary · 12″
- BL
- 13.5T·m
- Fs
- 55Hz
- Le
- 0.74mH
- Re
- 6.3Ω
- Sd
- 520cm²
- Cms
- 0.21mm/N
- Mms
- 39g
- Qes
- 0.46
- Qms
- 5.3
- Qts
- 0.43
- SPL
- 96.7dB
- Vas
- 81.3L
- Xmax
- 2.4mm
- Xmech
- 9.9
- Power
- 400W
- Impedance
- 8Ω
- Sensitivity
- 98.3dB
- Low limit
- 54Hz
- Power Program
- 800
- Calculated sensitivity †
- 96.7dB
- High limit
- 5000Hz
- Manufacturer sensitivity
- 98.3dB
- Weight
- 5.2kg
- Diameter
- 305.6mm
- Depth
- 135.9mm
- Cutout
- 281.2mm
- Bolt circle
- 294.4mm
02
Compare
Same-size drivers, compared with the DELTA-12A. Clear differences are green when better and red when worse.
This driverDELTA-12A
Best price
£98.74
Fs
55 Hz
Qts
0.43
Vas
81.3 L
BL
13.5 T·m
Xmax
2.4 mm
Sensitivity
96.7 dB
Power
400 W
PRV Audio12W750A
£63.52 · 36% less, betterFs60 Hz +9%
Qts0.43 –
Vas81 L –
BL14.3 T·m +6%
Xmax3.6 mm +51%, better
Sensitivity98 dB +1.3
PRV Audio12W800A
£67.26 · 32% less, betterFs50 Hz −9%
Qts0.47 +9%
Vas93.9 L +15%, worse
BL12.7 T·m −6%
Xmax5.7 mm +138%, better
Sensitivity95.8 dB −0.9
CelestionK12H-100TC
£69.50 · 30% less, betterFs56 Hz –
Qts0.40 −7%
Vas72.0 L −11%, better
BL13.6 T·m –
Xmax3 mm +25%, better
Sensitivity96.2 dB −0.5
GRS12SW-4HE
£70.29 · 29% less, betterFs22 Hz −60%, better
Qts0.43 –
Vas80.4 L –
BL16.2 T·m +20%, better
Xmax12.5 mm +421%, better
Sensitivity84.5 dB −12.2, worse
PeerlessFSL-1225R02-08
£71.81 · 27% less, betterFs63 Hz +15%, worse
Qts0.44 –
Vas54.8 L −33%, better
BL14.9 T·m +10%, better
Xmax5.3 mm +120%, better
Sensitivity96.5 dB –
£72.00 · 27% less, better
Fs47 Hz −15%, better
Qts0.40 −7%
Vas80 L –
BL15.6 T·m +16%, better
Xmax5 mm +108%, better
Sensitivity94.9 dB −1.8
CelestionTF1225
£83.50 · 15% less, betterFs56 Hz –
Qts0.37 −14%, better
Vas67.3 L −17%, better
BL14.3 T·m +6%
Xmax4.5 mm +88%, better
Sensitivity96.4 dB –
CIAREFXI12
£96.29 · 2% lessFs55 Hz –
Qts0.44 –
Vas70 L −14%, better
BL13.9 T·m –
Xmax5 mm +108%, better
Sensitivity95.8 dB −0.9
EminenceDELTA 12B
£98.74 · Same priceFs58 Hz +5%
Qts0.48 +12%, worse
Vas87 L +7%
BL16 T·m +19%, better
Xmax2.7 mm +13%, better
Sensitivity97.2 dB +0.5
EminenceDELTA-12LFA
£104.72 · 6% more, worseFs51 Hz −7%
Qts0.47 +9%
Vas67.9 L −16%, better
BL14.1 T·m +4%
Xmax4.8 mm +100%, better
Sensitivity94.5 dB −2.2, worse
EminenceDELTA-12LFC
£104.72 · 6% more, worseFs52 Hz −5%
Qts0.44 –
Vas63.7 L −22%, better
BL10.9 T·m −19%, worse
Xmax4.8 mm +100%, better
Sensitivity94.8 dB −1.9
Dayton AudioDCS305-4
£116.39 · 18% more, worseFs24 Hz −56%, better
Qts0.40 −7%
Vas92.3 L +14%, worse
BL13.7 T·m –
Xmax9.3 mm +288%, better
Sensitivity86.9 dB −9.8, worse
FaitalPRO12PR310
£135.00 · 37% more, worseFs54 Hz –
Qts0.40 −7%
Vas73.5 L −10%
BL14.4 T·m +7%
Xmax4.9 mm +105%, better
Sensitivity96.5 dB –
CIARECMI320ND
£149.07 · 51% more, worseFs53 Hz −4%
Qts0.43 –
Vas70 L −14%, better
BL10.6 T·m −21%, worse
Xmax5 mm +108%, better
Sensitivity95.8 dB −0.9
Sica12 PF 3
£166.62 · 69% more, worseFs47 Hz −15%, better
Qts0.39 −9%
Vas76.5 L −6%
BL15.4 T·m +14%, better
Xmax5.5 mm +129%, better
Sensitivity94.8 dB −1.9
LavoceCSF122.50K
£168.20 · 70% more, worseFs47 Hz −15%, better
Qts0.42 –
Vas89.8 L +10%, worse
BL13.9 T·m –
Xmax6.3 mm +160%, better
Sensitivity95.2 dB −1.5
CelestionFTX1225
£239.00 · 142% more, worseFs47 Hz −14%, better
Qts0.40 −8%
Vas84.6 L +4%
BL14 T·m +4%
Xmax6 mm +150%, better
Sensitivity95.1 dB −1.6
FaitalPRO12HX230
£250.31 · 154% more, worseFs55 Hz –
Qts0.43 –
Vas67.7 L −17%, better
BL14.1 T·m +4%
Xmax7.4 mm +207%, better
Sensitivity95.9 dB −0.8
Dayton AudioRSS315HF-4
£251.11 · 154% more, worseFs24 Hz −56%, better
Qts0.39 −9%
Vas84.1 L +3%
BL14.0 T·m +4%
Xmax14.3 mm +496%, better
Sensitivity86.3 dB −10.4, worse
JensenBS12N250A-8
No current priceFs47 Hz −15%, better
Qts0.43 –
Vas81.3 L –
BL14.4 T·m +6%
Xmax5.5 mm +129%, better
Sensitivity94.8 dB −1.9
CIAREHSB322
No current priceFs35 Hz −36%, better
Qts0.42 –
Vas83 L –
BL12 T·m −11%, worse
Xmax7.5 mm +213%, better
Sensitivity90.8 dB −5.9, worse
Sica12 C 2 CP
No current priceFs58 Hz +6%
Qts0.45 +5%
Vas74.3 L −9%
BL13.7 T·m –
Xmax4.5 mm +88%, better
Sensitivity96.8 dB –
LavoceFBASS12-20
No current priceFs53 Hz −4%
Qts0.46 +7%
Vas75.4 L −7%
BL13.3 T·m –
Xmax4.3 mm +79%, better
Sensitivity95.5 dB −1.2
No photo
PHL Audio4511
No current priceFs48 Hz −13%, better
Qts0.40 −7%
Vas74.1 L −9%
BL15.1 T·m +12%, better
Xmax7 mm +192%, better
Sensitivity94.6 dB −2.1, worse
JensenBS10N250A-8
No current priceFs58 Hz +5%
Qts0.43 –
Vas30.9 L −62%, better
BL12.9 T·m −4%
Xmax5 mm +108%, better
Sensitivity93.2 dB −3.5, worse
Oberton12CX1
No current priceFs58 Hz +5%
Qts0.37 −14%, better
Vas68.5 L −16%, better
BL13.9 T·m +3%
Xmax4.3 mm +77%, better
Sensitivity97.2 dB +0.5
Sica12 L1 2.5 SL
No current priceFs48 Hz −14%, better
Qts0.36 −16%, better
Vas81.8 L –
BL14.2 T·m +5%
Xmax3.7 mm +54%, better
Sensitivity95.7 dB −1
PRV Audio12MR1000
No current priceFs49 Hz −10%, better
Qts0.39 −9%
Vas92.3 L +14%, worse
BL15.9 T·m +18%, better
Xmax3 mm +25%, better
Sensitivity96.5 dB –
WavecorSW312WA03
No current priceFs28 Hz −49%, better
Qts0.48 +12%, worse
Vas61 L −25%, better
BL14.5 T·m +7%
Xmax11.5 mm +379%, better
Sensitivity86.3 dB −10.4, worse
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- Thomann4.7 out of 5113 ratings · Checked 26 Oct 2026Read reviews on Thomann
- Parts Express4.9 out of 523 ratings · Checked 26 Oct 2026Read reviews on Parts Express
Each shop collects its own ratings. Bits shows them as published and doesn't verify them.
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
Lean Audio | £103.95, the lowest price | 1 in stock | Visit shop at Lean Audio | |
Blue Aran | £100.00 | On Order ETA Unknown | Visit shop at Blue Aran | |
Lean Business | £107.00 | 2.9% above the lowest price | Out of stock | Visit shop at Lean Business |
Thomann 4–5 weeks | £127.00 | 22% above the lowest price | In stock | Visit shop at Thomann |
Parts Express Import VAT and duty may apply | £98.74 | 3 in stock | Visit shop at Parts Express |
Best price over time
Tracked since 1 Apr
Recent changes
- 28 AprThomann£132.00 → £129.00Down 2.3% from £132.00