SB AudienceBIANCO-12OB150-01
£55.90Fs44 Hz −30%, better
Qts0.63 +5%
Vas103.8 L +108%, worse
BL12.2 T·m −5%
Xmax6.8 mm +81%, better
Sensitivity93.1 dB −1.8
12-inch LF driver · 51 mm voice coil · 250 W
REDCATT 121FIND 8Ω
No price for delivery to the UK
- Fs
- 63Hz
- Xmax
- 3.8mm
- SPL
- 95dB
- Pe
- 250W
- BL
- 12.9T·m
- Vd
- 199cm³
- Qts
- 0.60
- Vas
- 50L
REDCATT 121FIND is a 12-inch 8 ohm LF driver rated at 250 W RMS. The validated T/S data includes Fs 63 Hz, Qts 0.60, Vas 49.8 L, Xmax 3.8 mm, sensitivity 94.9 dB, plus 199 cm³ Vd and 97 EBP. bits tracks vendor pricing, datasheet links, simulator import data, and similar drivers from the same loudspeaker database.
The published T/S values agree with each other
Thiele/Small
- Fs
- 63Hz
- Qts
- 0.60
- Qes
- 0.65
- Qms
- 7.5
- Vas
- 49.8L
- Re
- 5.3Ω
- Le
- 0.52mH
Motor and cone
- BL
- 12.9T·m
- Sd
- 531cm²
- Mms
- 51g
- Xmax
- 3.8mm
- Vd †
- 199cm³
- Voice coil
- 51mm
Power and response
- Sensitivity †
- 94.9dB
- Manufacturer sensitivity
- 96.6dB
- Power
- 250W
- Impedance
- 8Ω
- EBP †
- 97 · Sealed or vented
Size and mounting
- Diameter
- 320mm
- Cutout
- 282mm
- Bolt circle
- 302mm
- Weight
- 4.6kg
Other published values
- Xmech
- 11.75
- Power Peak
- 1000
Other dimensions
- Mounting Depth
- 124
Sensitivity shows 94.9 dB, calculated from the T/S values. REDCATT publishes 96.6 dB, 1.7 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else REDCATT lists
LF · Primary · 12″
- BL
- 12.9T·m
- Fs
- 63Hz
- Le
- 0.52mH
- Re
- 5.3Ω
- Sd
- 531cm²
- Mms
- 51g
- Qes
- 0.65
- Qms
- 7.5
- Qts
- 0.60
- SPL
- 94.9dB
- Vas
- 49.8L
- Xmax
- 3.8mm
- Xmech
- 11.75
- Power
- 250W
- Impedance
- 8Ω
- Power Peak
- 1000
- Sensitivity
- 96.6dB
- Calculated sensitivity †
- 94.9dB
- Manufacturer sensitivity
- 96.6dB
- Voice coil
- 51mm
- Weight
- 4.6kg
- Diameter
- 320mm
- Mounting Depth
- 124
- Cutout
- 282mm
- Bolt circle
- 302mm
02
Compare
Same-size drivers, compared with the 121FIND. Clear differences are green when better and red when worse.
This driver121FIND
Best price
–
Fs
63 Hz
Qts
0.60
Vas
49.8 L
BL
12.9 T·m
Xmax
3.8 mm
Sensitivity
94.9 dB
Power
250 W
FaitalPRO12FE400
£59.05Fs55 Hz −13%, better
Qts0.57 −5%
Vas73.6 L +48%, worse
BL11.5 T·m −11%, worse
Xmax5.4 mm +45%, better
Sensitivity94.9 dB –
PeerlessFSL-1220R02-08
£59.63Fs62 Hz –
Qts0.55 −8%
Vas61.1 L +23%, worse
BL13.3 T·m +3%
Xmax5.1 mm +35%, better
Sensitivity96 dB +1.1
£77.00
Fs50 Hz −21%, better
Qts0.64 +7%
Vas78.1 L +57%, worse
BL13 T·m –
Xmax3.5 mm −7%
Sensitivity93.3 dB −1.6
CelestionTRUVOX 1225
£89.91Fs60 Hz −4%
Qts0.62 +4%
Vas54.1 L +9%
BL13.5 T·m +5%
Xmax4.8 mm +27%, better
Sensitivity94.4 dB −0.5
EminenceMAN O WAR
£99.00Fs91 Hz +44%, worse
Qts0.68 +13%, worse
Vas38 L −24%, better
BL12.3 T·m −5%
Xmax0.8 mm −79%, worse
Sensitivity98 dB +3.1, better
EminenceLEGEND GB128
£105.00Fs86 Hz +37%, worse
Qts0.65 +8%
Vas43.9 L −12%, better
BL12 T·m −7%
Xmax0.8 mm −79%, worse
Sensitivity98.2 dB +3.3, better
B&C320K/C-A
£107.29Fs82 Hz +30%, worse
Qts0.50 −17%, better
Vas53 L +6%
BL12.2 T·m −5%
Xmax2 mm −47%, worse
Sensitivity99.5 dB +4.6, better
EminenceTEXAS HEAT
£110.67Fs79 Hz +25%, worse
Qts0.65 +8%
Vas50.9 L –
BL12.8 T·m –
Xmax0.8 mm −79%, worse
Sensitivity97.7 dB +2.8, better
EminenceGA-SC59
£233.17Fs89 Hz +41%, worse
Qts0.61 –
Vas41.2 L −17%, better
BL13.6 T·m +5%
Xmax1.6 mm −57%, worse
Sensitivity98.7 dB +3.8, better
B&C12CLX64
£236.92Fs54 Hz −14%, better
Qts0.57 −5%
Vas74 L +49%, worse
BL11.9 T·m −8%
Xmax5.5 mm +47%, better
Sensitivity94.8 dB –
Dayton AudioUMII12-22
£253.40Fs31 Hz −51%, better
Qts0.56 −7%
Vas53 L +6%
BL14.8 T·m +15%, better
Xmax22 mm +487%, better
Sensitivity85.5 dB −9.4, worse
P.AudioEX12-300S
No current priceFs66 Hz +5%
Qts0.54 −10%
Vas45.9 L −8%
BL13.7 T·m +6%
Xmax3.1 mm −17%, worse
Sensitivity95.2 dB –
EminenceJS-1250
No current priceFs92 Hz +46%, worse
Qts0.61 –
Vas41.2 L −17%, better
BL12.9 T·m –
Xmax0.8 mm −79%, worse
Sensitivity99.1 dB +4.2, better
LavoceWSF121.70G
No current priceFs82 Hz +30%, worse
Qts0.59 –
Vas41 L −18%, better
BL13.6 T·m +5%
Xmax2.7 mm −28%, worse
Sensitivity97.6 dB +2.7, better
CelestionTF1230
No current priceFs59 Hz −6%
Qts0.52 −14%, better
Vas51.1 L –
BL13.0 T·m –
Xmax5 mm +33%, better
Sensitivity94.1 dB −0.8
P.AudioE12-200S-V2
No current priceFs65 Hz +3%
Qts0.69 +15%, worse
Vas42.2 L −15%, better
BL12.3 T·m −4%
Xmax4.1 mm +9%
Sensitivity93.9 dB −1
EminenceGA-SC64
No current priceFs88 Hz +40%, worse
Qts0.58 −3%
Vas45.0 L −10%
BL13.8 T·m +7%
Xmax1.2 mm −67%, worse
Sensitivity99.1 dB +4.2, better
P.Audio12BMA-300B
No current priceFs61 Hz −3%
Qts0.49 −18%, better
Vas54.4 L +9%
BL13.7 T·m +6%
Xmax4 mm +7%
Sensitivity95.7 dB +0.8
EminenceGUIT-FIDDLE
No current priceFs82 Hz +30%, worse
Qts0.56 −7%
Vas57.8 L +16%, worse
BL13.1 T·m –
Xmax0.8 mm −79%, worse
Sensitivity99.4 dB +4.5, better
EminenceGA-SC-X
No current priceFs91 Hz +44%, worse
Qts0.66 +10%, worse
Vas45.0 L −10%
BL12.2 T·m −6%
Xmax1.3 mm −66%, worse
Sensitivity98.8 dB +3.9, better
JensenJN12-80TRS-8
No current priceFs72 Hz +14%, worse
Qts0.55 −8%
Vas56.5 L +13%, worse
BL12.2 T·m −6%
Xmax1 mm −73%, worse
Sensitivity96.7 dB +1.8
JensenJN12-100TRS-8
No current priceFs72 Hz +14%, worse
Qts0.52 −13%, better
Vas55.9 L +12%, worse
BL12.9 T·m –
Xmax1 mm −73%, worse
Sensitivity96.5 dB +1.6
JensenC12-75NH-8
No current priceFs83 Hz +32%, worse
Qts0.64 +7%
Vas42.4 L −15%, better
BL11.8 T·m −9%
Xmax1 mm −73%, worse
Sensitivity97.1 dB +2.2, better
CelestionFTR12-2565D
No current priceFs60 Hz −4%
Qts0.42 −30%, better
Vas49.1 L –
BL15.4 T·m +20%, better
Xmax4 mm +7%
Sensitivity95.3 dB –
EminenceSWAMP THANG
No current priceFs97 Hz +54%, worse
Qts0.53 −12%, better
Vas41.3 L −17%, better
BL14.2 T·m +10%, better
Xmax0.8 mm −79%, worse
Sensitivity100.4 dB +5.5, better
JensenJN12-100TR-4
No current priceFs77 Hz +21%, worse
Qts0.58 −3%
Vas47.2 L −5%
BL9.0 T·m −30%, worse
Xmax1 mm −73%, worse
Sensitivity96.6 dB +1.7
EminenceDELTALITE 2512
No current priceFs53 Hz −16%, better
Qts0.52 −13%, better
Vas67.4 L +35%, worse
BL11.6 T·m −10%, worse
Xmax4.9 mm +31%, better
Sensitivity94 dB −0.9
P.AudioGST-12500-V3
No current priceFs56 Hz −11%, better
Qts0.48 −20%, better
Vas52.9 L +6%
BL15.7 T·m +22%, better
Xmax3.3 mm −13%, worse
Sensitivity94.6 dB –
JensenC12K-2-8
No current priceFs79 Hz +25%, worse
Qts0.47 −22%, better
Vas43.1 L −13%, better
BL14.7 T·m +14%, better
Xmax1 mm −73%, worse
Sensitivity97.4 dB +2.5, better
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
None of the shops we track lists delivery to the UK at checkout.