Dayton AudioDMA45-8
£11.58 · 2% moreFs151 Hz −4%
Qts0.59 −13%, better
Vas0.057 L −77%, better
BL4.3 T·m −3%
Xmax2 mm +67%, better
Sensitivity76.6 dB −6.1, worse
2-inch LF driver · 20 mm voice coil · 10 W
REDCATT 21NFR 16Ω
16 Ω
£11.35
Lautsprecherteile · 8 in stock · All 1 offer
- Fs
- 157Hz
- Xmax
- 1.2mm
- SPL
- 83dB
- Pe
- 10W
- BL
- 4.4T·m
- Vd
- 2cm³
- Qts
- 0.68
- Vas
- 0.25L
REDCATT 21NFR is a 2-inch 16 ohm LF driver rated at 10 W RMS. The validated T/S data includes Fs 157 Hz, Qts 0.68, Vas 0.25 L, Xmax 1.2 mm, sensitivity 82.7 dB, plus 2 cm³ Vd and 191 EBP. bits tracks UK vendor pricing, price movement, datasheet links, simulator import data, and similar drivers, with a current best price of £11.35.
The published T/S values agree with each other
Thiele/Small
- Fs
- 157Hz
- Qts
- 0.68
- Qes
- 0.82
- Qms
- 3.8
- Vas
- 0.25L
- Re
- 10.2Ω
- Le
- 0.10mH
Motor and cone
- BL
- 4.4T·m
- Sd
- 17cm²
- Mms
- 2g
- Xmax
- 1.2mm
- Vd †
- 2cm³
- Voice coil
- 20mm
Power and response
- Sensitivity †
- 82.7dB
- Manufacturer sensitivity
- 84.7dB
- Power
- 10W
- Impedance
- 16Ω
- EBP †
- 191 · Leans vented
Size and mounting
- Diameter
- 57.3mm
- Cutout
- 50.5mm
- Bolt circle
- 45.5mm
- Weight
- 0.12kg
Other published values
- Xmech
- 5.2
- Power Peak
- 40
Other dimensions
- Mounting Depth
- 34.5
Sensitivity shows 82.7 dB, calculated from the T/S values. REDCATT publishes 84.7 dB, 2.0 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else REDCATT lists
LF · Primary · 2″
- BL
- 4.4T·m
- Fs
- 157Hz
- Le
- 0.10mH
- Re
- 10.2Ω
- Sd
- 17cm²
- Mms
- 2g
- Qes
- 0.82
- Qms
- 3.8
- Qts
- 0.68
- SPL
- 82.7dB
- Vas
- 0.25L
- Xmax
- 1.2mm
- Xmech
- 5.2
- Power
- 10W
- Impedance
- 16Ω
- Power Peak
- 40
- Sensitivity
- 84.7dB
- Calculated sensitivity †
- 82.7dB
- Manufacturer sensitivity
- 84.7dB
- Voice coil
- 20mm
- Weight
- 0.12kg
- Diameter
- 57.3mm
- Mounting Depth
- 34.5
- Cutout
- 50.5mm
- Bolt circle
- 45.5mm
02
Compare
Same-size drivers, compared with the 21NFR. Clear differences are green when better and red when worse.
This driver21NFR
Best price
£11.35
Fs
157 Hz
Qts
0.68
Vas
0.25 L
BL
4.4 T·m
Xmax
1.2 mm
Sensitivity
82.7 dB
Power
10 W
FaitalPRO2FE24
£12.43 · 10% more, worseFs170 Hz +8%
Qts0.69 –
Vas0.2 L −20%, better
BL3.2 T·m −27%, worse
Xmax1.9 mm +58%, better
Sensitivity82.7 dB –
Dayton AudioPC83-8
£13.36 · 18% more, worseFs82 Hz −48%, better
Qts0.63 −7%
Vas1.7 L +580%, worse
BL3.5 T·m −20%, worse
Xmax2 mm +67%, better
Sensitivity83 dB –
LavoceWSF030.70
£13.83 · 22% more, worseFs112 Hz −29%, better
Qts0.61 −10%, better
Vas0.9 L +256%, worse
BL4.7 T·m +6%
Xmax3.3 mm +175%, better
Sensitivity84.5 dB +1.8
VisatonFRS 5 X
£14.27 · 26% more, worseFs190 Hz +21%, worse
Qts0.70 –
Vas0.23 L −8%
BL2.7 T·m −39%, worse
Xmax2 mm +67%, better
Sensitivity84.6 dB +1.9
VisatonFRS 5 XTS
£15.84 · 40% more, worseFs190 Hz +21%, worse
Qts0.70 –
Vas0.23 L −8%
BL2.7 T·m −39%, worse
Xmax2 mm +67%, better
Sensitivity84.6 dB +1.9
Dayton AudioCE54N-4
£16.18 · 43% more, worseFs168 Hz +7%
Qts0.58 −15%, better
Vas111 L +44300%, worse
BL3.8 T·m −13%, worse
Xmax1.4 mm +17%, better
Sensitivity111.2 dB +28.5, better
MonacorSPX-32M
£18.78 · 66% more, worseFs110 Hz −30%, better
Qts0.56 −18%, better
Vas1.6 L +540%, worse
BL3.7 T·m −16%, worse
Xmax1.1 mm −8%
Sensitivity87.5 dB +4.8, better
MonacorSPX-31M
£19.64 · 73% more, worseFs110 Hz −30%, better
Qts0.58 −15%, better
Vas1.3 L +420%, worse
BL3.6 T·m −17%, worse
Xmax1.1 mm −8%
Sensitivity86 dB +3.3, better
REDCATT25NFR
£20.02 · 76% more, worseFs123 Hz −22%, better
Qts0.71 +4%
Vas0.46 L +84%, worse
BL4 T·m −9%
Xmax2.6 mm +121%, better
Sensitivity82.3 dB –
Tang BandW1-2396S
£20.40 · 80% more, worseFs180 Hz +15%, worse
Qts0.59 −13%, better
Vas0.12 L −52%, better
BL2.1 T·m −52%, worse
Xmax1.1 mm −8%
Sensitivity81.4 dB −1.3
MonacorSPX-30M
£20.49 · 81% more, worseFs100 Hz −36%, better
Qts0.71 +4%
Vas1.8 L +620%, worse
BL3.0 T·m −31%, worse
Xmax1.1 mm −8%
Sensitivity85.1 dB +2.4, better
LavoceFSN030.71
£24.94 · 120% more, worseFs134 Hz −15%, better
Qts0.67 –
Vas1.0 L +316%, worse
BL3.8 T·m −13%, worse
Xmax2.1 mm +75%, better
Sensitivity87.3 dB +4.6, better
Dayton AudioND65-8
£25.53 · 125% more, worseFs102 Hz −35%, better
Qts0.65 −4%
Vas0.36 L +44%, worse
BL4.2 T·m −5%
Xmax3.5 mm +192%, better
Sensitivity79.3 dB −3.4, worse
Tang BandW2-2355S
£29.77 · 162% more, worseFs80 Hz −49%, better
Qts0.56 −18%, better
Vas0.14 L −44%, better
BL4.3 T·m –
Xmax5 mm +317%, better
Sensitivity72.3 dB −10.4, worse
Tang BandW2-2243S
£37.77 · 233% more, worseFs160 Hz –
Qts0.30 −56%, better
Vas0.23 L −8%
BL3.8 T·m −14%, worse
Xmax1 mm −17%, worse
Sensitivity86.7 dB +4, better
ScanspeakD8404/552000
£2,475.84 · 21721% more, worseFs280 Hz +78%, worse
Qts0.69 –
Vas0.27 L +8%
BL6.1 T·m +39%, better
Xmax2.4 mm +100%, better
Sensitivity90.6 dB +7.9, better
Dayton AudioCE58N-10
No current priceFs177 Hz +13%, worse
Qts0.69 –
Vas0.16 L −37%, better
BL4.2 T·m −5%
Xmax2.1 mm +75%, better
Sensitivity82 dB −0.7
LavoceFSN021.02
No current priceFs151 Hz −4%
Qts0.68 –
Vas0.3 L +20%, worse
BL3.4 T·m −22%, worse
Xmax2.3 mm +92%, better
Sensitivity83.3 dB +0.6
KartesianWIB70_VPA
No current priceFs215 Hz +37%, worse
Qts0.69 –
Vas0.23 L −9%
BL4.2 T·m −6%
Xmax2.5 mm +108%, better
Sensitivity86 dB +3.3, better
VisatonFRS 5 X - 8 Ohm
No current priceFs190 Hz +21%, worse
Qts0.70 –
Vas0.23 L −8%
BL2.7 T·m −39%, worse
Xmax2 mm +67%, better
Sensitivity84.6 dB +1.9
VisatonFRS 5 XTS - 8 Ohm
No current priceFs190 Hz +21%, worse
Qts0.70 –
Vas0.23 L −8%
BL2.7 T·m −39%, worse
Xmax2 mm +67%, better
Sensitivity84.6 dB +1.9
MonacorAN3510/8
No current priceFs113 Hz −28%, better
Qts0.65 −5%
Vas1.9 L +660%, worse
BL4.6 T·m +4%
Xmax2.3 mm +88%, better
Sensitivity87.8 dB +5.1, better
Tang BandW2-835SL
No current priceFs160 Hz –
Qts0.30 −56%, better
Vas0.24 L −4%
BL4.7 T·m +6%
Xmax1 mm −17%, worse
Sensitivity86.8 dB +4.1, better
WavecorFR055WA03
No current priceFs142 Hz −10%
Qts0.57 −16%, better
Vas0.27 L +8%
BL2.7 T·m −39%, worse
Xmax1.4 mm +13%, better
Sensitivity83.1 dB –
PeerlessPLS-75F25AL02-08
No current priceFs100 Hz −36%, better
Qts0.74 +9%
Vas1.1 L +332%, worse
BL3.6 T·m −19%, worse
Xmax3.4 mm +182%, better
Sensitivity83.1 dB –
No photo
Tang BandW3-582SC
No current priceFs100 Hz −36%, better
Qts0.65 −4%
Vas1.6 L +520%, worse
BL3.5 T·m −21%, worse
Xmax0.2 mm −83%, worse
Sensitivity85.2 dB +2.5, better
No current price
Fs75 Hz −52%, better
Qts0.75 +10%, worse
Vas6.3 L +2408%, worse
BL4.2 T·m −4%
Xmax6.5 mm +442%, better
Sensitivity86.3 dB +3.6, better
Tang BandW2-1803S
No current priceFs155 Hz –
Qts0.75 +10%, worse
Vas0.25 L –
BL2.3 T·m −48%, worse
Xmax0.7 mm −42%, worse
Sensitivity81.6 dB −1.1
WavecorFR055WA02
No current priceFs128 Hz −18%, better
Qts0.82 +21%, worse
Vas0.33 L +32%, worse
BL2.7 T·m −39%, worse
Xmax1.4 mm +13%, better
Sensitivity80.8 dB −1.9
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 | £11.35, the lowest price | 8 in stock | Visit shop at Lautsprecherteile |
Best price over time
Tracked since 1 Oct