REDCATT8FIND
£57.80Fs70 Hz −15%, better
Qts0.25 −3%
Vas18.2 L +67%, worse
BL14.3 T·m –
Xmax2.2 mm −51%, worse
Sensitivity96 dB +0.5
8-inch LF driver · 8NMB series · 64 mm voice coil · 250 W
Oberton 8NMB250V4 8Ω
8 Ω · 80–4000 Hz
No current price
- Fs
- 82Hz
- Xmax
- 4.5mm
- SPL
- 96dB
- Pe
- 250W
- BL
- 14.3T·m
- Vd
- 91cm³
- Qts
- 0.26
- Vas
- 11L
Published graphs
Oberton 8NMB250V4 is an 8-inch 8 ohm LF driver rated at 250 W RMS. The validated T/S data includes Fs 82 Hz, Qts 0.26, Vas 10.9 L, Xmax 4.5 mm, sensitivity 95.5 dB, plus 91 cm³ Vd and 305 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
- 82Hz
- Qts
- 0.26
- Qes
- 0.27
- Qms
- 6.4
- Vas
- 10.9L
- Re
- 5.5Ω
- Le
- 0.13mH
Motor and cone
- BL
- 14.3T·m
- Sd
- 202cm²
- Mms
- 19g
- Xmax
- 4.5mm
- Vd †
- 91cm³
- Voice coil
- 64mm
- Flux density
- 1.45T
Power and response
- Sensitivity †
- 95.5dB
- Manufacturer sensitivity
- 100dB
- Power
- 250W
- Impedance
- 8Ω
- Min. impedance
- 6.6Ω
- Range
- 80–4000Hz
- EBP †
- 305 · Leans vented
Size and mounting
- Diameter
- 225mm
- Cutout
- 187mm
- Bolt circle
- 210mm
- Depth
- 83.5mm
- Weight
- 2.6kg
Other published values
- Cms
- 0.20mm/N
- Power Program
- 500
Sensitivity shows 95.5 dB, calculated from the T/S values. Oberton publishes 100.0 dB, 4.5 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Oberton lists
LF · Primary · 8″
- BL
- 14.3T·m
- Fs
- 82Hz
- Le
- 0.13mH
- Re
- 5.5Ω
- Sd
- 202cm²
- Cms
- 0.20mm/N
- Mms
- 19g
- Qes
- 0.27
- Qms
- 6.4
- Qts
- 0.26
- SPL
- 95.5dB
- Vas
- 10.9L
- Xmax
- 4.5mm
- Power
- 250W
- Impedance
- 8Ω
- Flux density
- 1.45T
- Sensitivity
- 100dB
- Low limit
- 80Hz
- Power Program
- 500
- Calculated sensitivity †
- 95.5dB
- High limit
- 4000Hz
- Manufacturer sensitivity
- 100dB
- Min. impedance
- 6.6Ω
- Voice coil
- 64mm
- Weight
- 2.6kg
- Diameter
- 225mm
- Depth
- 83.5mm
- Cutout
- 187mm
- Bolt circle
- 210mm
02
Compare
Same-size drivers, compared with the 8NMB250V4. Clear differences are green when better and red when worse.
This driver8NMB250V4
Best price
–
Fs
82 Hz
Qts
0.26
Vas
10.9 L
BL
14.3 T·m
Xmax
4.5 mm
Sensitivity
95.5 dB
Power
250 W
CIAREFXI8
£67.69Fs81 Hz –
Qts0.29 +12%, worse
Vas13 L +19%, worse
BL13.3 T·m −7%
Xmax4.5 mm –
Sensitivity95.4 dB –
Sica8 FE 2.5 CP
£82.94Fs73 Hz −11%, better
Qts0.28 +9%
Vas15.6 L +43%, worse
BL13.0 T·m −9%
Xmax4 mm −11%, worse
Sensitivity95.1 dB –
Beyma8WR300
£90.10Fs65 Hz −21%, better
Qts0.27 +5%
Vas15 L +38%, worse
BL15.5 T·m +9%
Xmax6 mm +33%, better
Sensitivity93.6 dB −1.9
Eighteen Sound8M400F
£114.19Fs89 Hz +8%
Qts0.26 –
Vas13.7 L +26%, worse
BL13.1 T·m −8%
Xmax3 mm −33%, worse
Sensitivity97.4 dB +1.9
B&C8NDL64
£120.63Fs80 Hz –
Qts0.25 −3%
Vas9.6 L −12%, better
BL17.5 T·m +23%, better
Xmax4.5 mm –
Sensitivity95 dB −0.5
Eighteen Sound8NTLW2000
£137.39Fs71 Hz −13%, better
Qts0.21 −19%, better
Vas13 L +19%, worse
BL17.5 T·m +23%, better
Xmax4.4 mm –
Sensitivity95.5 dB –
BMS8S215
£137.66Fs88 Hz +7%
Qts0.31 +20%, worse
Vas11.0 L –
BL13.6 T·m −5%
Xmax4.3 mm −6%
Sensitivity95.6 dB –
Eighteen Sound8NW650
£138.53Fs63 Hz −23%, better
Qts0.25 −3%
Vas17.8 L +63%, worse
BL15.2 T·m +7%
Xmax5.5 mm +22%, better
Sensitivity94.2 dB −1.3
CelestionFTX0820
£139.00Fs79 Hz −4%
Qts0.28 +8%
Vas13.1 L +21%, worse
BL14.6 T·m –
Xmax4 mm −11%, worse
Sensitivity95.2 dB –
RCFMB8N251
£149.12Fs68 Hz −17%, better
Qts0.25 −3%
Vas13 L +19%, worse
BL15.2 T·m +7%
Xmax5 mm +11%, better
Sensitivity94 dB −1.5
Sica8 K 3 PL
£158.33Fs68 Hz −17%, better
Qts0.25 −3%
Vas12.2 L +12%, worse
BL16.1 T·m +13%, better
Xmax5 mm +11%, better
Sensitivity93.6 dB −1.9
BMS8N515
£171.89Fs88 Hz +7%
Qts0.30 +16%, worse
Vas11.0 L –
BL13.8 T·m −3%
Xmax4 mm −11%, worse
Sensitivity95.7 dB –
FaitalPRO8HX200
£225.35Fs76 Hz −7%
Qts0.30 +16%, worse
Vas13.1 L +20%, worse
BL13.8 T·m −3%
Xmax4.9 mm +9%
Sensitivity94.7 dB −0.8
BMS8CN552
£262.59Fs88 Hz +7%
Qts0.29 +12%, worse
Vas10.1 L −7%
BL13.4 T·m −6%
Xmax4 mm −11%, worse
Sensitivity95.6 dB –
AccutonS220-6-222
£912.00Fs25 Hz −70%, better
Qts0.26 –
Vas89.7 L +724%, worse
BL10.9 T·m −23%, worse
Xmax5.3 mm +17%, better
Sensitivity89.2 dB −6.3, worse
Oberton8NB201
No current priceFs71 Hz −14%, better
Qts0.24 −5%
Vas12.5 L +15%, worse
BL14.4 T·m –
Xmax5.3 mm +17%, better
Sensitivity94.4 dB −1.1
Acoustic EleganceTD8M-8
No current priceFs76 Hz −7%
Qts0.26 –
Vas11.3 L +4%
BL15.5 T·m +9%
Xmax3 mm −33%, worse
Sensitivity94.6 dB −0.9
REDCATT8NPM
No current priceFs79 Hz −4%
Qts0.29 +12%, worse
Vas10.9 L –
BL14.2 T·m –
Xmax3.7 mm −18%, worse
Sensitivity94.4 dB −1.1
B&C8CLA64
No current priceFs71 Hz −13%, better
Qts0.24 −7%
Vas12.5 L +15%, worse
BL16.4 T·m +15%, better
Xmax5.3 mm +18%, better
Sensitivity94.6 dB −0.9
PRV Audio8MR600X-NDY
No current priceFs88 Hz +7%
Qts0.29 +12%, worse
Vas12.6 L +16%, worse
BL15.2 T·m +6%
Xmax3.8 mm −17%, worse
Sensitivity96.5 dB +1
Oberton8NM250V2
No current priceFs68 Hz −17%, better
Qts0.25 –
Vas8.4 L −23%, better
BL21.3 T·m +49%, better
Xmax4 mm −11%, worse
Sensitivity92.1 dB −3.4, worse
REDCATT81NPM-2
No current priceFs69 Hz −16%, better
Qts0.28 +9%
Vas10.3 L −5%
BL19.3 T·m +35%, better
Xmax4.0 mm −10%, worse
Sensitivity92.7 dB −2.8, worse
No photo
PHL Audio2510
No current priceFs72 Hz −12%, better
Qts0.24 −7%
Vas13.3 L +22%, worse
BL23 T·m +61%, better
Xmax4 mm −11%, worse
Sensitivity95 dB −0.5
Oberton8NM201
No current priceFs103 Hz +25%, worse
Qts0.29 +11%, worse
Vas8.1 L −26%, better
BL13.7 T·m −4%
Xmax2.8 mm −39%, worse
Sensitivity96.8 dB +1.3
Eighteen Sound8NCX750
No current priceFs111 Hz +35%, worse
Qts0.26 –
Vas5.2 L −52%, better
BL20 T·m +40%, better
Xmax4 mm −11%, worse
Sensitivity96.2 dB +0.7
No photo
PHL Audio2513NDU
No current priceFs70 Hz −15%, better
Qts0.23 −11%, better
Vas12.5 L +15%, worse
BL24 T·m +68%, better
Xmax4 mm −11%, worse
Sensitivity94.5 dB −1
LavoceCAN082.00K
No current priceFs72 Hz −12%, better
Qts0.27 +5%
Vas15.1 L +38%, worse
BL13.2 T·m −8%
Xmax6.7 mm +49%, better
Sensitivity94.8 dB −0.7
No photo
PHL Audio2730
No current priceFs42 Hz −49%, better
Qts0.26 –
Vas34.1 L +213%, worse
BL12.6 T·m −12%, worse
Xmax7 mm +56%, better
Sensitivity91.7 dB −3.8, worse
No photo
PHL Audio2720
No current priceFs50 Hz −39%, better
Qts0.26 –
Vas29.2 L +168%, worse
BL12.6 T·m −12%, worse
Xmax9 mm +100%, better
Sensitivity93.3 dB −2.2, worse
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
No current price found. Pricing may appear after the next vendor refresh.