EminenceDELTA-15A
£110.70 · 12% less, betterFs40 Hz +29%, worse
Qts0.53 +112%, worse
Vas270.7 L −18%, better
BL13.2 T·m −10%, worse
Xmax2.7 mm +13%, better
Sensitivity96.9 dB −1.1
15-inch LF driver · KAPPA series · 450 W
Eminence KAPPA 15C 4Ω
4 Ω · 63–2800 Hz
£130.00
SteadyLean Audio · 2 in stock · All 4 offers
- Fs
- 31Hz
- Xmax
- 2.4mm
- SPL
- 98dB
- Pe
- 450W
- BL
- 14.7T·m
- Vd
- 206cm³
- Qts
- 0.25
- Vas
- 330L
Eminence KAPPA 15C is a 15-inch 4 ohm LF driver rated at 450 W RMS. The validated T/S data includes Fs 31 Hz, Qts 0.25, Vas 329.9 L, Xmax 2.4 mm, sensitivity 98 dB, plus 206 cm³ Vd and 124 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 £125.67.
The published T/S values agree with each other
Thiele/Small
- Fs
- 31Hz
- Qts
- 0.25
- Qes
- 0.25
- Qms
- 10.1
- Vas
- 329.9L
- Re
- 3.7Ω
- Le
- 0.88mH
Motor and cone
- BL
- 14.7T·m
- Sd
- 856cm²
- Mms
- 77g
- Xmax
- 2.4mm
- Vd †
- 206cm³
Power and response
- Sensitivity †
- 98dB
- Manufacturer sensitivity
- 98.1dB
- Power
- 450W
- Impedance
- 4Ω
- Range
- 63–2800Hz
- EBP †
- 124 · Leans vented
Size and mounting
- Diameter
- 385.1mm
- Cutout
- 352.3mm
- Bolt circle
- 369.8mm
- Depth
- 155.7mm
- Weight
- 8.0kg
Other published values
- Cms
- 0.35mm/N
- Xmech
- 11.6
- Power Program
- 900
† Calculated by bits from the published values
What this validation status means
Everything else Eminence lists
LF · Primary · 15″
- BL
- 14.7T·m
- Fs
- 31Hz
- Le
- 0.88mH
- Re
- 3.7Ω
- Sd
- 856cm²
- Cms
- 0.35mm/N
- Mms
- 77g
- Qes
- 0.25
- Qms
- 10.1
- Qts
- 0.25
- SPL
- 98dB
- Vas
- 329.9L
- Xmax
- 2.4mm
- Xmech
- 11.6
- Power
- 450W
- Impedance
- 4Ω
- Sensitivity
- 98.1dB
- Low limit
- 63Hz
- Power Program
- 900
- Calculated sensitivity †
- 98dB
- High limit
- 2800Hz
- Manufacturer sensitivity
- 98.1dB
- Weight
- 8.0kg
- Diameter
- 385.1mm
- Depth
- 155.7mm
- Cutout
- 352.3mm
- Bolt circle
- 369.8mm
02
Compare
Same-size drivers, compared with the KAPPA 15C. Clear differences are green when better and red when worse.
This driverKAPPA 15C
Best price
£125.67
Fs
31 Hz
Qts
0.25
Vas
329.9 L
BL
14.7 T·m
Xmax
2.4 mm
Sensitivity
98 dB
Power
450 W
B&C15CL76
£125.02 · Same priceFs42 Hz +35%, worse
Qts0.25 –
Vas140 L −58%, better
BL19.1 T·m +30%, better
Xmax7 mm +192%, better
Sensitivity97.9 dB –
EminenceKAPPA-15A
£125.67 · Same priceFs33 Hz +6%
Qts0.32 +28%, worse
Vas321.3 L –
BL15.7 T·m +7%
Xmax4 mm +67%, better
Sensitivity97.5 dB −0.5
Eighteen Sound15W700
£177.51 · 41% more, worseFs41 Hz +32%, worse
Qts0.27 +8%
Vas180 L −45%, better
BL14.7 T·m –
Xmax6.5 mm +171%, better
Sensitivity98.3 dB –
Eighteen Sound15W750
£185.88 · 48% more, worseFs39 Hz +26%, worse
Qts0.29 +16%, worse
Vas253 L −23%, better
BL14 T·m −5%
Xmax8 mm +233%, better
Sensitivity99 dB +1
B&C15PLB76
£191.58 · 52% more, worseFs42 Hz +35%, worse
Qts0.25 –
Vas164 L −50%, better
BL22.1 T·m +50%, better
Xmax5 mm +108%, better
Sensitivity98.7 dB +0.7
Eighteen Sound15W930
£193.05 · 54% more, worseFs33 Hz +6%
Qts0.22 −12%, better
Vas240 L −27%, better
BL22.1 T·m +50%, better
Xmax7.5 mm +213%, better
Sensitivity97.8 dB –
FaitalPRO15FH510
£199.28 · 59% more, worseFs35 Hz +13%, worse
Qts0.26 +4%
Vas191.8 L −42%, better
BL21 T·m +43%, better
Xmax9.3 mm +285%, better
Sensitivity96.9 dB −1.1
FaitalPRO15FH500
£213.51 · 70% more, worseFs33 Hz +6%
Qts0.28 +12%, worse
Vas209.5 L −36%, better
BL16.2 T·m +10%, better
Xmax9.4 mm +294%, better
Sensitivity96.2 dB −1.8
RCFL15P400
£214.72 · 71% more, worseFs36 Hz +16%, worse
Qts0.25 –
Vas160 L −52%, better
BL24.8 T·m +69%, better
Xmax8 mm +233%, better
Sensitivity96.4 dB −1.6
Dayton Audio15LF500-8
£217.66 · 73% more, worseFs26 Hz −18%, better
Qts0.26 +4%
Vas331.3 L –
BL21.1 T·m +44%, better
Xmax9.3 mm +285%, better
Sensitivity95.1 dB −2.9, worse
Eighteen Sound15ND930
£233.35 · 86% more, worseFs35 Hz +13%, worse
Qts0.24 −4%
Vas182 L −45%, better
BL17 T·m +16%, better
Xmax7.5 mm +213%, better
Sensitivity97.1 dB −0.9
B&C15NDL88
£245.35 · 95% more, worseFs41 Hz +32%, worse
Qts0.28 +12%, worse
Vas154 L −53%, better
BL16.5 T·m +12%, better
Xmax8 mm +233%, better
Sensitivity97.7 dB –
Eighteen Sound15LW2400
£254.95 · 103% more, worseFs34 Hz +10%
Qts0.23 −8%
Vas191 L −42%, better
BL18 T·m +22%, better
Xmax9.5 mm +296%, better
Sensitivity97 dB −1
Eighteen Sound15NLW9401
£288.50 · 130% more, worseFs40 Hz +29%, worse
Qts0.25 –
Vas114 L −65%, better
BL20 T·m +36%, better
Xmax10 mm +317%, better
Sensitivity96.5 dB −1.5
CIARENDH15-4S
£289.95 · 131% more, worseFs28 Hz −10%
Qts0.25 –
Vas220 L −33%, better
BL24.2 T·m +65%, better
Xmax11.5 mm +379%, better
Sensitivity94.7 dB −3.3, worse
B&C15CXN76
£396.97 · 216% more, worseFs38 Hz +23%, worse
Qts0.28 +12%, worse
Vas246 L −25%, better
BL17.8 T·m +21%, better
Xmax6 mm +150%, better
Sensitivity98.6 dB +0.6
B&C15HCX76
£399.49 · 218% more, worseFs38 Hz +23%, worse
Qts0.28 +12%, worse
Vas246 L −25%, better
BL17.8 T·m +21%, better
Xmax6 mm +150%, better
Sensitivity98.6 dB +0.6
Scanspeak38WE/8582T00
£1,172.19 · 833% more, worseFs26 Hz −16%, better
Qts0.24 −4%
Vas423 L +28%, worse
BL18.7 T·m +27%, better
Xmax10.2 mm +325%, better
Sensitivity96.6 dB −1.4
Acoustic EleganceTD15H-4
No current priceFs21 Hz −32%, better
Qts0.26 +4%
Vas467 L +42%, worse
BL14.9 T·m –
Xmax14 mm +483%, better
Sensitivity94.1 dB −3.9, worse
Precision DevicesPD.153C002
No current priceFs38 Hz +23%, worse
Qts0.25 –
Vas263 L −20%, better
BL18.9 T·m +29%, better
Xmax6.8 mm +181%, better
Sensitivity99.4 dB +1.4
Eighteen Sound15ND940
No current priceFs39 Hz +26%, worse
Qts0.26 +4%
Vas170 L −48%, better
BL16.6 T·m +13%, better
Xmax9.5 mm +296%, better
Sensitivity97.8 dB –
CelestionCF1540F
No current priceFs29 Hz −6%
Qts0.23 −6%
Vas227.9 L −31%, better
BL23.1 T·m +57%, better
Xmax8.6 mm +258%, better
Sensitivity95.7 dB −2.3, worse
PeerlessFSL-1530R01-08
No current priceFs41 Hz +32%, worse
Qts0.24 −4%
Vas180 L −45%, better
BL21.8 T·m +48%, better
Xmax4.7 mm +95%, better
Sensitivity99 dB +1
Oberton15L400
No current priceFs43 Hz +40%, worse
Qts0.29 +15%, worse
Vas229.9 L −30%, better
BL16.9 T·m +15%, better
Xmax3.3 mm +35%, better
Sensitivity100 dB +2, better
Eighteen Sound15MB650
No current priceFs40 Hz +29%, worse
Qts0.26 +4%
Vas210 L −36%, better
BL20 T·m +36%, better
Xmax4 mm +67%, better
Sensitivity99 dB +1
Acoustic EleganceTD15H-8
No current priceFs21 Hz −32%, better
Qts0.26 +4%
Vas467 L +42%, worse
BL20.1 T·m +37%, better
Xmax14 mm +483%, better
Sensitivity94.1 dB −3.9, worse
CelestionFTR15-4080F
No current priceFs38 Hz +23%, worse
Qts0.25 –
Vas163.1 L −51%, better
BL23.5 T·m +60%, better
Xmax8.5 mm +254%, better
Sensitivity97.2 dB −0.8
No photo
PHL Audio6121M-20
No current priceFs39 Hz +26%, worse
Qts0.24 −4%
Vas119.7 L −64%, better
BL29 T·m +97%, better
Xmax8.5 mm +254%, better
Sensitivity96.6 dB −1.4
Acoustic EleganceTD15X-8
No current priceFs23 Hz −25%, better
Qts0.28 +12%, worse
Vas467 L +42%, worse
BL16.7 T·m +14%, better
Xmax14 mm +483%, better
Sensitivity94.8 dB −3.2, worse
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- Thomann4.4 out of 539 ratings · Checked 25 Oct 2026Read reviews on Thomann
- Parts Express4.9 out of 522 ratings · Checked 25 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 | £130.00, the lowest price | 2 in stock | Visit shop at Lean Audio | |
Thomann | £169.00 | 30% above the lowest price | In stock | Visit shop at Thomann |
Parts Express Import VAT and duty may apply | £125.67 | 5 in stock | Visit shop at Parts Express |
Best price over time
Tracked since 1 Apr
Recent changes
- 22 OctThomann£170.00 → £169.00Down 0.6% from £170.00
- 14 OctThomann£171.00 → £170.00Down 0.6% from £171.00
- 6 OctThomann£173.00 → £171.00Down 1.2% from £173.00