REDCATT8FIND
£57.80 · 61% less, betterFs70 Hz –
Qts0.25 –
Vas18.2 L +40%, worse
BL14.3 T·m −6%
Xmax2.2 mm −56%, worse
Sensitivity96 dB +2, better
8-inch LF driver · 63 mm voice coil · 300 W
RCF MB8N251 8Ω
8 Ω · 60–3500 Hz
No price for delivery to the UK
- Fs
- 68Hz
- Xmax
- 5mm
- SPL
- 94dB
- Pe
- 300W
- BL
- 15.2T·m
- Vd
- 100cm³
- Qts
- 0.25
- Vas
- 13L
RCF MB8N251 is an 8-inch 8 ohm LF driver rated at 300 W RMS. The validated T/S data includes Fs 68 Hz, Qts 0.25, Vas 13 L, Xmax 5 mm, sensitivity 94 dB, plus 100 cm³ Vd and 262 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 £149.12.
The published T/S values agree with each other
Thiele/Small
- Fs
- 68Hz
- Qts
- 0.25
- Qes
- 0.26
- Qms
- 4.6
- Vas
- 13L
- Re
- 5.1Ω
- Le
- 1.30mH
Motor and cone
- BL
- 15.2T·m
- Sd
- 200cm²
- Mms
- 27g
- Xmax
- 5mm
- Vd †
- 100cm³
- Voice coil
- 63mm
Power and response
- Sensitivity †
- 94dB
- Manufacturer sensitivity
- 96dB
- Power
- 300W
- Impedance
- 8Ω
- Min. impedance
- 6Ω
- Range
- 60–3500Hz
- EBP †
- 262 · Leans vented
Size and mounting
- Diameter
- 239mm
- Cutout
- 185mm
- Bolt circle
- 227mm
- Weight
- 2.0kg
Other published values
- Xmech
- 40
- Power Program
- 600
Sensitivity shows 94.0 dB, calculated from the T/S values. RCF publishes 96.0 dB, 2.0 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else RCF lists
LF · Primary · 8″
- BL
- 15.2T·m
- Fs
- 68Hz
- Le
- 1.30mH
- Re
- 5.1Ω
- Sd
- 200cm²
- Mms
- 27g
- Qes
- 0.26
- Qms
- 4.6
- Qts
- 0.25
- SPL
- 94dB
- Vas
- 13L
- Xmax
- 5mm
- Xmech
- 40
- Power
- 300W
- Impedance
- 8Ω
- Sensitivity
- 96dB
- Low limit
- 60Hz
- Power Program
- 600
- Calculated sensitivity †
- 94dB
- High limit
- 3500Hz
- Manufacturer sensitivity
- 96dB
- Min. impedance
- 6Ω
- Voice coil
- 63mm
- Weight
- 2.0kg
- Diameter
- 239mm
- Cutout
- 185mm
- Bolt circle
- 227mm
02
Compare
Same-size drivers, compared with the MB8N251. Clear differences are green when better and red when worse.
This driverMB8N251
Best price
£149.12
Fs
68 Hz
Qts
0.25
Vas
13 L
BL
15.2 T·m
Xmax
5 mm
Sensitivity
94 dB
Power
300 W
CIAREFXI8
£67.69 · 55% less, betterFs81 Hz +19%, worse
Qts0.29 +16%, worse
Vas13 L –
BL13.3 T·m −12%, worse
Xmax4.5 mm −10%, worse
Sensitivity95.4 dB +1.4
Beyma8WRS300
£75.45 · 49% less, betterFs65 Hz −4%
Qts0.28 +12%, worse
Vas15 L +15%, worse
BL15.2 T·m –
Xmax6 mm +20%, better
Sensitivity93.4 dB −0.6
Sica8 FE 2.5 CP
£82.94 · 44% less, betterFs73 Hz +7%
Qts0.28 +12%, worse
Vas15.6 L +20%, worse
BL13.0 T·m −14%, worse
Xmax4 mm −20%, worse
Sensitivity95.1 dB +1.1
Beyma8WR300
£90.10 · 40% less, betterFs65 Hz −4%
Qts0.27 +8%
Vas15 L +15%, worse
BL15.5 T·m –
Xmax6 mm +20%, better
Sensitivity93.6 dB –
Eighteen Sound8M400F
£114.19 · 23% less, betterFs89 Hz +31%, worse
Qts0.26 +4%
Vas13.7 L +5%
BL13.1 T·m −14%, worse
Xmax3 mm −40%, worse
Sensitivity97.4 dB +3.4, better
B&C8NDL64
£120.63 · 19% less, betterFs80 Hz +18%, worse
Qts0.25 –
Vas9.6 L −26%, better
BL17.5 T·m +15%, better
Xmax4.5 mm −10%, worse
Sensitivity95 dB +1
Eighteen Sound8NTLW2000
£137.39 · 8% less, betterFs71 Hz +4%
Qts0.21 −16%, better
Vas13 L –
BL17.5 T·m +15%, better
Xmax4.4 mm −12%, worse
Sensitivity95.5 dB +1.5
Eighteen Sound8NW650
£138.53 · 7% less, betterFs63 Hz −7%
Qts0.25 –
Vas17.8 L +37%, worse
BL15.2 T·m –
Xmax5.5 mm +10%, better
Sensitivity94.2 dB –
CelestionFTX0820
£139.00 · 7% less, betterFs79 Hz +16%, worse
Qts0.28 +12%, worse
Vas13.1 L –
BL14.6 T·m −4%
Xmax4 mm −20%, worse
Sensitivity95.2 dB +1.2
LavoceWAN082.02
£147.11 · 1% lessFs80 Hz +18%, worse
Qts0.23 −8%
Vas9.0 L −31%, better
BL17.8 T·m +17%, better
Xmax5.8 mm +16%, better
Sensitivity94.7 dB +0.7
Sica8 K 3 PL
£158.33 · 6% more, worseFs68 Hz –
Qts0.25 –
Vas12.2 L −6%
BL16.1 T·m +6%
Xmax5 mm –
Sensitivity93.6 dB –
Beyma8MC500ND
£160.01 · 7% more, worseFs69 Hz –
Qts0.18 −28%, better
Vas15.9 L +22%, worse
BL16.7 T·m +10%
Xmax5 mm –
Sensitivity96.4 dB +2.4, better
Beyma8MC300ND
£175.93 · 18% more, worseFs62 Hz −9%
Qts0.22 −12%, better
Vas18 L +38%, worse
BL16 T·m +5%
Xmax6 mm +20%, better
Sensitivity94.6 dB +0.6
WavecorWF211PA02
£185.41 · 24% more, worseFs59 Hz −13%, better
Qts0.25 –
Vas18.2 L +40%, worse
BL13.4 T·m −12%, worse
Xmax2 mm −60%, worse
Sensitivity93.6 dB –
B&C8CXN51
£224.51 · 51% more, worseFs68 Hz –
Qts0.27 +8%
Vas17 L +31%, worse
BL12.6 T·m −17%, worse
Xmax6 mm +20%, better
Sensitivity94.7 dB +0.7
FaitalPRO8HX200
£225.35 · 51% more, worseFs76 Hz +12%, worse
Qts0.30 +20%, worse
Vas13.1 L –
BL13.8 T·m −9%
Xmax4.9 mm –
Sensitivity94.7 dB +0.7
FaitalPRO8HX230
£233.73 · 57% more, worseFs70 Hz –
Qts0.29 +16%, worse
Vas14.7 L +13%, worse
BL15 T·m –
Xmax6.2 mm +23%, better
Sensitivity94.1 dB –
AccutonC173-6-096
£837.69 · 462% more, worseFs50 Hz −26%, better
Qts0.22 −12%, better
Vas17.0 L +31%, worse
BL11.4 T·m −25%, worse
Xmax5 mm –
Sensitivity91.5 dB −2.5, worse
AccutonS220-6-222
£912.00 · 512% more, worseFs25 Hz −63%, better
Qts0.26 +4%
Vas89.7 L +590%, worse
BL10.9 T·m −28%, worse
Xmax5.3 mm +5%
Sensitivity89.2 dB −4.8, worse
Oberton8NB201
No current priceFs71 Hz +4%
Qts0.24 –
Vas12.5 L −4%
BL14.4 T·m −5%
Xmax5.3 mm +5%
Sensitivity94.4 dB –
B&C8CLA64
No current priceFs71 Hz +4%
Qts0.24 −4%
Vas12.5 L −4%
BL16.4 T·m +8%
Xmax5.3 mm +6%
Sensitivity94.6 dB +0.6
Oberton8NMB250V4
No current priceFs82 Hz +21%, worse
Qts0.26 +3%
Vas10.9 L −16%, better
BL14.3 T·m −6%
Xmax4.5 mm −10%, worse
Sensitivity95.5 dB +1.5
Acoustic EleganceTD8M-8
No current priceFs76 Hz +12%, worse
Qts0.26 +4%
Vas11.3 L −13%, better
BL15.5 T·m –
Xmax3 mm −40%, worse
Sensitivity94.6 dB +0.6
PRV Audio8MR600X-NDY
No current priceFs88 Hz +29%, worse
Qts0.29 +16%, worse
Vas12.6 L −3%
BL15.2 T·m –
Xmax3.8 mm −25%, worse
Sensitivity96.5 dB +2.5, better
No photo
PHL Audio2510
No current priceFs72 Hz +6%
Qts0.24 −4%
Vas13.3 L –
BL23 T·m +51%, better
Xmax4 mm −20%, worse
Sensitivity95 dB +1
Sica8 CX 2.5 PL P
No current priceFs74 Hz +9%
Qts0.28 +12%, worse
Vas16.2 L +25%, worse
BL12.3 T·m −19%, worse
Xmax5 mm –
Sensitivity95.1 dB +1.1
No photo
PHL Audio2440
No current priceFs77 Hz +13%, worse
Qts0.31 +24%, worse
Vas13.1 L –
BL12.8 T·m −16%, worse
Xmax5 mm –
Sensitivity94.5 dB +0.5
No photo
PHL Audio2513NDU
No current priceFs70 Hz –
Qts0.23 −8%
Vas12.5 L −4%
BL24 T·m +58%, better
Xmax4 mm −20%, worse
Sensitivity94.5 dB +0.5
Oberton8NM250V2
No current priceFs68 Hz –
Qts0.25 –
Vas8.4 L −35%, better
BL21.3 T·m +40%, better
Xmax4 mm −20%, worse
Sensitivity92.1 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 |
|---|---|---|---|---|
Lean Business | £99.92 | Out of stock | Visit shop at Lean Business | |
Blue Aran 6-8 weeks | £128.18 | Usually available in 6-8 weeks | Visit shop at Blue Aran |