REDCATT5FHW
£15.86 · 90% less, betterFs50 Hz +56%, worse
Qts0.35 +17%, worse
Vas6.5 L −85%, better
BL6.5 T·m –
Xmax3.2 mm +3%
Sensitivity85.4 dB −3.2, worse
6-inch LF driver · MR16 series · 36 mm voice coil · 30 W
SB Acoustics MR16P-8 8Ω
8 Ω
£164.28
SteadyLean Audio · 2 in stock · All 5 offers
- Fs
- 32Hz
- Xmax
- 3.1mm
- SPL
- 89dB
- Pe
- 30W
- BL
- 6.5T·m
- Vd
- 37cm³
- Qts
- 0.30
- Vas
- 44L
Manufacturer response and impedance data, with source and trace details below. The left and right arrow keys read every shown curve at a frequency, a twelfth of an octave at a time, or an octave with Shift. Escape clears the reading.
Curve provenanceInspect 2 traces
These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works
- Trace datasheet-response-trace-poc/v1
30 degrees
Frequency response
240 plotted pointsMedium confidence1,214 selected pixels of 4,606 - Trace datasheet-response-trace-poc/v1
60 degrees
Frequency response
240 plotted pointsMedium confidence1,088 selected pixels of 2,301
Published graphs
SB Acoustics MR16P-8 is a 6-inch 8 ohm LF driver rated at 30 W RMS. The validated T/S data includes Fs 32 Hz, Qts 0.30, Vas 44.3 L, Xmax 3.1 mm, sensitivity 88.6 dB, plus 37 cm³ Vd and 100 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 £159.05.
The published T/S values agree with each other
Thiele/Small
- Fs
- 32Hz
- Qts
- 0.30
- Qes
- 0.32
- Qms
- 5.1
- Vas
- 44.3L
- Re
- 6.2Ω
- Le
- 0.11mH
Motor and cone
- BL
- 6.5T·m
- Sd
- 119cm²
- Mms
- 11g
- Xmax
- 3.1mm
- Vd †
- 37cm³
- Voice coil
- 36mm
- Flux density
- 1.17T
Power and response
- Sensitivity †
- 88.6dB
- Manufacturer sensitivity
- 88dB
- Power
- 30W
- Impedance
- 8Ω
- EBP †
- 100 · Sealed or vented
Size and mounting
- Weight
- 1kg
Other published values
- Cms
- 2.30mm/N
† Calculated by bits from the published values
What this validation status means
Everything else SB Acoustics lists
LF · Primary · 6″
- BL
- 6.5T·m
- Fs
- 32Hz
- Le
- 0.11mH
- Re
- 6.2Ω
- Sd
- 119cm²
- Cms
- 2.30mm/N
- Mms
- 11g
- Qes
- 0.32
- Qms
- 5.1
- Qts
- 0.30
- SPL
- 88.6dB
- Vas
- 44.3L
- Xmax
- 3.1mm
- Power
- 30W
- Impedance
- 8Ω
- Flux density
- 1.17T
- Sensitivity
- 88dB
- Calculated sensitivity †
- 88.6dB
- Manufacturer sensitivity
- 88dB
- Voice coil
- 36mm
- Weight
- 1kg
02
Compare
Same-size drivers, compared with the MR16P-8. Clear differences are green when better and red when worse.
This driverMR16P-8
Best price
£159.05
Fs
32 Hz
Qts
0.30
Vas
44.3 L
BL
6.5 T·m
Xmax
3.1 mm
Sensitivity
88.6 dB
Power
30 W
Sica5 F 1.5 CP
£38.51 · 76% less, betterFs61 Hz +91%, worse
Qts0.30 –
Vas6.8 L −85%, better
BL7.6 T·m +16%, better
Xmax3.5 mm +13%, better
Sensitivity88.7 dB –
SB AcousticsSB15SFCR39-4
£39.73 · 75% less, betterFs31 Hz −3%
Qts0.32 +7%
Vas49.9 L +13%, worse
BL6.9 T·m +6%
Xmax5.5 mm +77%, better
Sensitivity88.4 dB –
Scanspeak12W/8524G00
£54.43 · 66% less, betterFs52 Hz +63%, worse
Qts0.32 +7%
Vas8.2 L −81%, better
BL5.4 T·m −17%, worse
Xmax3 mm −3%
Sensitivity87.2 dB −1.4
SB AcousticsSB17MFC35-4
£54.89 · 65% less, betterFs30 Hz −6%
Qts0.28 −7%
Vas45 L –
BL4.9 T·m −25%, worse
Xmax5.5 mm +77%, better
Sensitivity88.1 dB −0.5
SB AcousticsSB17NRXC35-8
£58.60 · 63% less, betterFs32 Hz –
Qts0.34 +13%, worse
Vas44.5 L –
BL5.9 T·m −9%
Xmax5.5 mm +77%, better
Sensitivity88.1 dB −0.5
SB AcousticsSB17NBAC35-4
£65.93 · 59% less, betterFs30 Hz −6%
Qts0.29 −3%
Vas42.6 L −4%
BL4.9 T·m −25%, worse
Xmax5.5 mm +77%, better
Sensitivity87.7 dB −0.9
SB AcousticsSB17CAC35-4
£82.13 · 48% less, betterFs30 Hz −8%
Qts0.29 −3%
Vas37.8 L −15%, better
BL5.3 T·m −18%, worse
Xmax5.5 mm +77%, better
Sensitivity87 dB −1.6
SEASH1215-08 CA18RNX
£101.94 · 36% less, betterFs35 Hz +9%
Qts0.31 +3%
Vas33 L −26%, better
BL7.2 T·m +11%, better
Xmax6 mm +94%, better
Sensitivity87.9 dB −0.7
SB AcousticsMR13PNW-8
£115.00 · 28% less, betterFs47 Hz +47%, worse
Qts0.30 –
Vas12.9 L −71%, better
BL6.2 T·m −5%
Xmax3 mm −3%
Sensitivity88.2 dB –
SB AcousticsMR13P-8
£135.77 · 15% less, betterFs45 Hz +41%, worse
Qts0.31 +3%
Vas12.5 L −72%, better
BL6.1 T·m −6%
Xmax3 mm −3%
Sensitivity87.4 dB −1.2
Scanspeak18W/8545K00
£144.00 · 9% less, betterFs28 Hz −13%, better
Qts0.28 −7%
Vas46.4 L +5%
BL8.2 T·m +26%, better
Xmax6.5 mm +110%, better
Sensitivity87.3 dB −1.3
SB AcousticsMW16P-8
£145.30 · 9% less, betterFs29 Hz −9%
Qts0.33 +10%, worse
Vas48 L +8%
BL6.3 T·m −3%
Xmax6 mm +94%, better
Sensitivity87.3 dB −1.3
SB AcousticsMW16PNW-8
£146.49 · 8% less, betterFs29 Hz −9%
Qts0.32 +7%
Vas49.9 L +13%, worse
BL6.3 T·m −3%
Xmax6 mm +94%, better
Sensitivity87.6 dB −1
Scanspeak15M/4531K00
£150.70 · 5% less, betterFs42 Hz +31%, worse
Qts0.27 −10%
Vas16 L −64%, better
BL6 T·m −8%
Xmax3 mm −3%
Sensitivity88.3 dB –
SB AcousticsMR16PNW-8
£159.05 · Same priceFs31 Hz −3%
Qts0.32 +7%
Vas44.8 L –
BL6.5 T·m –
Xmax3.1 mm –
Sensitivity88 dB −0.6
SB AcousticsMR16P-4
£159.05 · Same priceFs31 Hz −3%
Qts0.25 −17%, better
Vas47.2 L +7%
BL5.2 T·m −20%, worse
Xmax3.1 mm –
Sensitivity89.4 dB +0.8
SB AcousticsMR16PNW-4
£159.05 · Same priceFs31 Hz −3%
Qts0.25 −17%, better
Vas47.2 L +7%
BL5.2 T·m −20%, worse
Xmax3.1 mm –
Sensitivity89.4 dB +0.8
WavecorWF182BD03
£190.66 · 20% more, worseFs39 Hz +22%, worse
Qts0.29 −3%
Vas24.4 L −45%, better
BL6.8 T·m +4%
Xmax5.5 mm +77%, better
Sensitivity88.9 dB –
SB AcousticsMT19CP-8
£234.41 · 47% more, worseFs43 Hz +34%, worse
Qts0.31 +3%
Vas37.1 L −16%, better
BL8.1 T·m +24%, better
Xmax3.6 mm +16%, better
Sensitivity91.5 dB +2.9, better
Scanspeak12M/4631G00
£242.78 · 53% more, worseFs75 Hz +134%, worse
Qts0.33 +10%, worse
Vas2.3 L −95%, better
BL5.3 T·m −18%, worse
Xmax3 mm −3%
Sensitivity86.5 dB −2.1, worse
SB AcousticsMR16TX-8
£249.00 · 57% more, worseFs35 Hz +9%
Qts0.31 +3%
Vas38.9 L −12%, better
BL6.6 T·m –
Xmax2.9 mm −8%
Sensitivity89.2 dB +0.6
SB AcousticsMW16TX-8
£250.36 · 57% more, worseFs29 Hz −8%
Qts0.33 +10%, worse
Vas48 L +8%
BL6.3 T·m −3%
Xmax6 mm +94%, better
Sensitivity87.4 dB −1.2
Scanspeak12MU/8731T00
£263.71 · 66% more, worseFs66 Hz +106%, worse
Qts0.29 −3%
Vas5.8 L −87%, better
BL6.1 T·m −6%
Xmax3.4 mm +10%
Sensitivity89.3 dB +0.7
SB AcousticsMW19TX-4
£283.85 · 78% more, worseFs32 Hz –
Qts0.27 −10%
Vas53.2 L +20%, worse
BL6.3 T·m −3%
Xmax6.8 mm +119%, better
Sensitivity90 dB +1.4
SB AcousticsSB17BAC35-8-COAX
No current priceFs35 Hz +10%, worse
Qts0.33 +10%, worse
Vas33.1 L −25%, better
BL5.7 T·m −12%, worse
Xmax3.1 mm –
Sensitivity88.1 dB −0.5
WavecorWF182BD10
No current priceFs29 Hz −11%, better
Qts0.31 +3%
Vas32.4 L −27%, better
BL6.5 T·m –
Xmax5.5 mm +77%, better
Sensitivity85.7 dB −2.9, worse
WavecorWF182BD18
No current priceFs29 Hz −11%, better
Qts0.31 +3%
Vas32.4 L −27%, better
BL6.5 T·m –
Xmax5.5 mm +77%, better
Sensitivity85.7 dB −2.9, worse
Audio Technology5 H 52 17 06 SD
No current priceFs36 Hz +13%, worse
Qts0.28 −7%
Vas34 L −23%, better
BL6.6 T·m –
Xmax6.3 mm +103%, better
Sensitivity88.8 dB –
No photo
PHL Audio1752NDU
No current priceFs119 Hz +272%, worse
Qts0.30 –
Vas4.4 L −90%, better
BL11.9 T·m +83%, better
Xmax3 mm −3%
Sensitivity95.5 dB +6.9, better
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- SoundImports5.0 out of 52 ratings · Checked 26 Oct 2026Read reviews on SoundImports
Each shop collects its own ratings. Bits shows them as published and doesn't verify them.
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
Lean Audio | £164.28, the lowest price | 2 in stock | Visit shop at Lean Audio | |
Willys-Hifi | £170.60 | 3.8% above the lowest price | Stock not listed | Visit shop at Willys-Hifi |
SoundImports Import VAT and duty may apply | £159.05 | 3 in stock | Visit shop at SoundImports | |
RumoH Import VAT and duty may apply | £171.05 | 4.1% above the lowest price | Stock not listed | Visit shop at RumoH |
Best price over time
Tracked since 1 Apr
Recent changes
- 1 OctWillys-Hifi£174.95 → £170.60Down 2.5% from £174.95
- 28 SepWillys-Hifi£173.95 → £174.95Up 0.6% from £173.95
- 23 SepWillys-Hifi£174.95 → £173.95Down 0.6% from £174.95