B&C12FW76
£151.51 · 29% less, betterFs54 Hz +8%
Qts0.18 +12%, worse
Vas45 L −24%, better
BL26.4 T·m −5%
Xmax7 mm +367%, better
Sensitivity98 dB −0.7
12-inch LF driver · 76 mm voice coil · 450 W
REDCATT 121NPM 8Ω
8 Ω
£213.61
Lautsprecherteile · 8 in stock · All 1 offer
- Fs
- 50Hz
- Xmax
- 1.5mm
- SPL
- 99dB
- Pe
- 450W
- BL
- 27.8T·m
- Vd
- 80cm³
- Qts
- 0.16
- Vas
- 59L
REDCATT 121NPM is a 12-inch 8 ohm LF driver rated at 450 W RMS. The validated T/S data includes Fs 50 Hz, Qts 0.16, Vas 59.2 L, Xmax 1.5 mm, sensitivity 98.7 dB, plus 80 cm³ Vd and 313 EBP. bits tracks UK vendor pricing, price movement, datasheet links, simulator import data, and similar drivers, with a current best price of £213.61.
The published T/S values agree with each other
Thiele/Small
- Fs
- 50Hz
- Qts
- 0.16
- Qes
- 0.16
- Qms
- 7.5
- Vas
- 59.2L
- Re
- 6Ω
- Le
- 0.51mH
Motor and cone
- BL
- 27.8T·m
- Sd
- 531cm²
- Mms
- 67g
- Xmax
- 1.5mm
- Vd †
- 80cm³
- Voice coil
- 76mm
Power and response
- Sensitivity †
- 98.7dB
- Manufacturer sensitivity
- 100dB
- Power
- 450W
- Impedance
- 8Ω
- EBP †
- 313 · Leans vented
Size and mounting
- Diameter
- 315mm
- Cutout
- 285mm
- Bolt circle
- 298mm
- Weight
- 4kg
Other published values
- Xmech
- 11.5
- Power Peak
- 1800
Other dimensions
- Mounting Depth
- 123.5
Sensitivity shows 98.7 dB, calculated from the T/S values. REDCATT publishes 100.0 dB, 1.3 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else REDCATT lists
LF · Primary · 12″
- BL
- 27.8T·m
- Fs
- 50Hz
- Le
- 0.51mH
- Re
- 6Ω
- Sd
- 531cm²
- Mms
- 67g
- Qes
- 0.16
- Qms
- 7.5
- Qts
- 0.16
- SPL
- 98.7dB
- Vas
- 59.2L
- Xmax
- 1.5mm
- Xmech
- 11.5
- Power
- 450W
- Impedance
- 8Ω
- Power Peak
- 1800
- Sensitivity
- 100dB
- Calculated sensitivity †
- 98.7dB
- Manufacturer sensitivity
- 100dB
- Voice coil
- 76mm
- Weight
- 4kg
- Diameter
- 315mm
- Mounting Depth
- 123.5
- Cutout
- 285mm
- Bolt circle
- 298mm
02
Compare
Same-size drivers, compared with the 121NPM. Clear differences are green when better and red when worse.
This driver121NPM
Best price
£213.61
Fs
50 Hz
Qts
0.16
Vas
59.2 L
BL
27.8 T·m
Xmax
1.5 mm
Sensitivity
98.7 dB
Power
450 W
Precision DevicesPD.123C001
£160.00 · 25% less, betterFs35 Hz −30%, better
Qts0.14 −10%, better
Vas122 L +106%, worse
BL24.5 T·m −12%, worse
Xmax7.5 mm +400%, better
Sensitivity97.5 dB −1.2
B&C12MH32
£166.61 · 22% less, betterFs53 Hz +6%
Qts0.19 +19%, worse
Vas63 L +6%
BL22.3 T·m −20%, worse
Xmax5 mm +233%, better
Sensitivity98.7 dB –
CIARE12.00SW
£203.33 · 5% lessFs30 Hz −40%, better
Qts0.34 +113%, worse
Vas59 L –
BL25.3 T·m −9%
Xmax14 mm +833%, better
Sensitivity88.5 dB −10.2, worse
B&C12NW76
£203.40 · 5% lessFs40 Hz −20%, better
Qts0.16 –
Vas76 L +28%, worse
BL25.5 T·m −8%
Xmax8 mm +433%, better
Sensitivity96.6 dB −2.1, worse
Eighteen Sound12MB1000
£204.35 · 4% lessFs54 Hz +8%
Qts0.18 +12%, worse
Vas60 L –
BL23.5 T·m −15%, worse
Xmax2.5 mm +67%, better
Sensitivity98.8 dB –
RCFMB12N351
£225.00 · 5% more, worseFs55 Hz +10%, worse
Qts0.20 +25%, worse
Vas61 L +3%
BL22.5 T·m −19%, worse
Xmax6 mm +300%, better
Sensitivity98.9 dB –
B&C12NBX100
£247.00 · 16% more, worseFs41 Hz −18%, better
Qts0.22 +38%, worse
Vas51 L −14%, better
BL25.6 T·m −8%
Xmax10 mm +567%, better
Sensitivity93.7 dB −5, worse
Eighteen Sound12NMB1000
£252.00 · 18% more, worseFs54 Hz +8%
Qts0.19 +19%, worse
Vas58 L –
BL24.4 T·m −12%, worse
Xmax3.5 mm +133%, better
Sensitivity98.8 dB –
REDCATT122NPW
£254.25 · 19% more, worseFs35 Hz −30%, better
Qts0.17 +6%
Vas81.9 L +38%, worse
BL27 T·m –
Xmax5.8 mm +283%, better
Sensitivity95.2 dB −3.5, worse
B&C12NW100
£254.68 · 19% more, worseFs42 Hz −16%, better
Qts0.20 +25%, worse
Vas44 L −26%, better
BL28 T·m –
Xmax9 mm +500%, better
Sensitivity93.9 dB −4.8, worse
Eighteen Sound12ND610
£266.75 · 25% more, worseFs46 Hz −8%
Qts0.14 −12%, better
Vas94.4 L +59%, worse
BL24 T·m −14%, worse
Xmax3.5 mm +133%, better
Sensitivity99.9 dB +1.2
Dayton AudioRSS315HO-44
£281.98 · 32% more, worseFs22 Hz −57%, better
Qts0.37 +131%, worse
Vas61.3 L +4%
BL26.5 T·m −5%
Xmax14 mm +833%, better
Sensitivity83.7 dB −15, worse
BMS12C362
£287.08 · 34% more, worseFs46 Hz −8%
Qts0.20 +25%, worse
Vas60.6 L –
BL23.2 T·m −17%, worse
Xmax4.5 mm +200%, better
Sensitivity96.7 dB −2, worse
BMS12N810
£315.78 · 48% more, worseFs41 Hz −19%, better
Qts0.16 –
Vas89.6 L +51%, worse
BL24.5 T·m −12%, worse
Xmax2.5 mm +67%, better
Sensitivity97.5 dB −1.2
Beyma12P80ND
£376.94 · 76% more, worseFs47 Hz −6%
Qts0.19 +19%, worse
Vas65 L +10%
BL23.7 T·m −15%, worse
Xmax7.5 mm +400%, better
Sensitivity97.3 dB −1.4
Oberton12NMB600
No current priceFs41 Hz −18%, better
Qts0.13 −16%, better
Vas70.8 L +20%, worse
BL27.8 T·m –
Xmax5.3 mm +250%, better
Sensitivity97.6 dB −1.1
BMS12N820
No current priceFs38 Hz −24%, better
Qts0.16 –
Vas98.7 L +67%, worse
BL24.2 T·m −13%, worse
Xmax4.5 mm +200%, better
Sensitivity97.3 dB −1.4
Oberton12NB400
No current priceFs44 Hz −13%, better
Qts0.18 +12%, worse
Vas70.5 L +19%, worse
BL20.3 T·m −27%, worse
Xmax5.3 mm +250%, better
Sensitivity97.1 dB −1.6
Sica12 F 4 CP
No current priceFs46 Hz −8%
Qts0.20 +25%, worse
Vas52 L −12%, better
BL26.0 T·m −6%
Xmax6 mm +300%, better
Sensitivity95.8 dB −2.9, worse
JensenMOD12-70-4
No current priceFs74 Hz +48%, worse
Qts0.90 +463%, worse
Vas51.7 L −13%, better
BL7.2 T·m −74%, worse
Xmax1.5 mm –
Sensitivity94.4 dB −4.3, worse
BMS12S310
No current priceFs45 Hz −9%
Qts0.20 +25%, worse
Vas66.9 L +13%, worse
BL24.2 T·m −13%, worse
Xmax2.5 mm +67%, better
Sensitivity97 dB −1.7
JensenMOD12-70-8
No current priceFs78 Hz +56%, worse
Qts0.89 +456%, worse
Vas48.1 L −19%, better
BL8.3 T·m −70%, worse
Xmax1.5 mm –
Sensitivity97.5 dB −1.2
JensenJN12-65TRS-16
No current priceFs80 Hz +60%, worse
Qts1.27 +694%, worse
Vas47.3 L −20%, better
BL11.1 T·m −60%, worse
Xmax1.5 mm –
Sensitivity95.5 dB −3.2, worse
Eighteen Sound12ND940
No current priceFs49 Hz –
Qts0.20 +25%, worse
Vas64.8 L +9%
BL22.2 T·m −20%, worse
Xmax7.6 mm +407%, better
Sensitivity97.8 dB −0.9
JensenC12Q-16
No current priceFs86 Hz +72%, worse
Qts1.99 +1144%, worse
Vas46.3 L −22%, better
BL8.2 T·m −71%, worse
Xmax1.5 mm –
Sensitivity93.9 dB −4.8, worse
RCFMB12N405
No current priceFs52 Hz +4%
Qts0.20 +25%, worse
Vas53 L −10%, better
BL23.5 T·m −15%, worse
Xmax7 mm +367%, better
Sensitivity97.5 dB −1.2
RCFCX12N351
No current priceFs58 Hz +16%, worse
Qts0.20 +25%, worse
Vas47 L −21%, better
BL25 T·m −10%, worse
Xmax6 mm +300%, better
Sensitivity98.4 dB –
JensenMOD12-50-8
No current priceFs82 Hz +64%, worse
Qts1.40 +775%, worse
Vas43.6 L −26%, better
BL7.4 T·m −73%, worse
Xmax1.5 mm –
Sensitivity92.7 dB −6, worse
JensenJN12-65TRS-8
No current priceFs83 Hz +66%, worse
Qts0.95 +494%, worse
Vas43.5 L −27%, better
BL9.4 T·m −66%, worse
Xmax1.5 mm –
Sensitivity94.5 dB −4.2, worse
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
Lautsprecherteile | £213.61, the lowest price | 8 in stock | Visit shop at Lautsprecherteile |
Best price over time
Tracked since 1 Oct