- Net volume
- 3L
Eighteen Sound gives the volume only, not whether the box is sealed or vented.
6.5-inch LF driver · 200 W
Eighteen Sound 6M44 8Ω
8 Ω · 140–7000 Hz
No price for delivery to the UK
- Fs
- 102Hz
- Xmax
- 2.3mm
- SPL
- 93dB
- Pe
- 200W
- BL
- 13.4T·m
- Vd
- 30cm³
- Qts
- 0.29
- Vas
- 4L
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 1 trace
These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works
- Trace datasheet-response-trace-poc/v1
frequency response
Frequency response
240 plotted pointsMedium confidence678 selected pixels of 940
Published graphs
Eighteen Sound 6M44 is a 6.5-inch 8 ohm LF driver rated at 200 W RMS. The validated T/S data includes Fs 102 Hz, Qts 0.29, Vas 3.8 L, Xmax 2.3 mm, sensitivity 93.2 dB, plus 30 cm³ Vd and 329 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
- 102Hz
- Qts
- 0.29
- Qes
- 0.31
- Qms
- 4.4
- Vas
- 3.8L
- Re
- 5.3Ω
- Le
- 0.32mH
Motor and cone
- BL
- 13.4T·m
- Sd
- 132cm²
- Mms
- 16g
- Xmax
- 2.3mm
- Vd †
- 30cm³
Power and response
- Sensitivity †
- 93.2dB
- Manufacturer sensitivity
- 95dB
- Power
- 200W
- Nominal power
- 200W
- Impedance
- 8Ω
- Range
- 140–7000Hz
- EBP †
- 329 · Leans vented
Size and mounting
- Diameter
- 162mm
- Cutout
- 148mm
- Bolt circle
- 170mm
- Depth
- 85mm
- Weight
- 3.4kg
Other published values
- Power Program
- 350
Sensitivity shows 93.2 dB, calculated from the T/S values. Eighteen Sound publishes 95.0 dB, 1.8 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Eighteen Sound lists
LF · Primary · 6.5″
- BL
- 13.4T·m
- Fs
- 102Hz
- Le
- 0.32mH
- Re
- 5.3Ω
- Sd
- 132cm²
- Mms
- 16g
- Qes
- 0.31
- Qms
- 4.4
- Qts
- 0.29
- SPL
- 93.2dB
- Vas
- 3.8L
- Xmax
- 2.3mm
- Power
- 200W
- Impedance
- 8Ω
- Sensitivity
- 95dB
- Low limit
- 140Hz
- Nominal power
- 200W
- Power Program
- 350
- Calculated sensitivity †
- 93.2dB
- High limit
- 7000Hz
- Manufacturer sensitivity
- 95dB
- Weight
- 3.4kg
- Diameter
- 162mm
- Depth
- 85mm
- Cutout
- 148mm
- Bolt circle
- 170mm
02
Designs
What Eighteen Sound suggests for the 6M44. No published designs name it yet.
How we find designsEighteen Sound’s suggested box
From Eighteen Sound’s 6M44 page
Open the 6M44 in 00 Simulator
03
Compare
Same-size drivers, compared with the 6M44. Clear differences are green when better and red when worse.
This driver6M44
Best price
–
Fs
102 Hz
Qts
0.29
Vas
3.8 L
BL
13.4 T·m
Xmax
2.3 mm
Sensitivity
93.2 dB
Power
200 W
Dayton AudioDS175-8
£37.39Fs37 Hz −64%, better
Qts0.27 −7%
Vas17 L +347%, worse
BL10.4 T·m −22%, worse
Xmax5.3 mm +133%, better
Sensitivity86.3 dB −6.9, worse
SB AcousticsSB17NBAC35-4
£65.93Fs30 Hz −71%, better
Qts0.29 –
Vas42.6 L +1021%, worse
BL4.9 T·m −63%, worse
Xmax5.5 mm +144%, better
Sensitivity87.7 dB −5.5, worse
SB AudienceROSSO-6MW150D
£67.15Fs66 Hz −35%, better
Qts0.32 +10%, worse
Vas8.8 L +132%, worse
BL11.6 T·m −13%, worse
Xmax5.2 mm +133%, better
Sensitivity90.9 dB −2.3, worse
B&C6MBX44
£74.45Fs113 Hz +11%, worse
Qts0.31 +7%
Vas4.1 L +8%
BL11.7 T·m −13%, worse
Xmax3.5 mm +56%, better
Sensitivity94.4 dB +1.2
REDCATT6FHM
£82.06Fs36 Hz −65%, better
Qts0.29 –
Vas26.1 L +587%, worse
BL9.9 T·m −26%, worse
Xmax4.3 mm +89%, better
Sensitivity88.3 dB −4.9, worse
SB AcousticsSB17CAC35-4
£82.13Fs30 Hz −71%, better
Qts0.29 –
Vas37.8 L +895%, worse
BL5.3 T·m −60%, worse
Xmax5.5 mm +144%, better
Sensitivity87 dB −6.2, worse
LavoceWAN061.80
£83.14Fs60 Hz −41%, better
Qts0.27 −7%
Vas11.2 L +194%, worse
BL10.9 T·m −19%, worse
Xmax5.2 mm +131%, better
Sensitivity91.2 dB −2, worse
FaitalPRO6PR150
£85.46Fs100 Hz –
Qts0.34 +17%, worse
Vas4.9 L +29%, worse
BL11.6 T·m −13%, worse
Xmax2.6 mm +18%, better
Sensitivity93.5 dB –
B&C6PS38
£89.63Fs75 Hz −26%, better
Qts0.30 +3%
Vas8 L +111%, worse
BL10.8 T·m −19%, worse
Xmax6 mm +167%, better
Sensitivity92.4 dB −0.8
CIARENDI6
£89.68Fs71 Hz −30%, better
Qts0.29 –
Vas8.5 L +124%, worse
BL10.8 T·m −19%, worse
Xmax5.3 mm +136%, better
Sensitivity91.8 dB −1.4
Sica6 N 2.5 PL
£95.37Fs80 Hz −22%, better
Qts0.27 −7%
Vas4.9 L +29%, worse
BL13.5 T·m –
Xmax4.5 mm +100%, better
Sensitivity91.4 dB −1.8
REDCATT6NPM
£101.69Fs150 Hz +47%, worse
Qts0.35 +21%, worse
Vas2.9 L −24%, better
BL13.7 T·m –
Xmax0.4 mm −82%, worse
Sensitivity96.1 dB +2.9, better
Beyma6P200ND
£136.52Fs56 Hz −45%, better
Qts0.29 –
Vas11.9 L +213%, worse
BL10.5 T·m −22%, worse
Xmax5.5 mm +144%, better
Sensitivity90.2 dB −3, worse
No photo
PHL Audio1660NDM
No current priceFs125 Hz +23%, worse
Qts0.31 +7%
Vas4 L +5%
BL12.5 T·m −7%
Xmax2.5 mm +11%, better
Sensitivity95.6 dB +2.4, better
No photo
PHL Audio1663
No current priceFs125 Hz +23%, worse
Qts0.32 +10%, worse
Vas4 L +5%
BL12.5 T·m −7%
Xmax2.5 mm +11%, better
Sensitivity95.5 dB +2.3, better
No photo
PHL Audio1680NDM-10
No current priceFs125 Hz +23%, worse
Qts0.31 +7%
Vas2.9 L −24%, better
BL12.5 T·m −7%
Xmax2.5 mm +11%, better
Sensitivity94.2 dB +1
LavoceMAN062.00
No current priceFs103 Hz –
Qts0.30 +3%
Vas4.1 L +7%
BL12.7 T·m −5%
Xmax3.9 mm +73%, better
Sensitivity93.3 dB –
No photo
PHL Audio1683-26
No current priceFs125 Hz +23%, worse
Qts0.32 +10%, worse
Vas2.9 L −24%, better
BL12.5 T·m −7%
Xmax2.5 mm +11%, better
Sensitivity94.1 dB +0.9
No photo
PHL Audio1752
No current priceFs119 Hz +17%, worse
Qts0.27 −7%
Vas4.4 L +16%, worse
BL12.5 T·m −7%
Xmax3 mm +33%, better
Sensitivity96 dB +2.8, better
No photo
PHL Audio1752NDU
No current priceFs119 Hz +17%, worse
Qts0.30 +3%
Vas4.4 L +16%, worse
BL11.9 T·m −11%, worse
Xmax3 mm +33%, better
Sensitivity95.5 dB +2.3, better
Oberton6NM150
No current priceFs124 Hz +22%, worse
Qts0.38 +30%, worse
Vas4 L +5%
BL11.6 T·m −14%, worse
Xmax2.3 mm –
Sensitivity94.8 dB +1.6
B&C6CLA51
No current priceFs96 Hz −6%
Qts0.32 +10%, worse
Vas4.3 L +13%, worse
BL11.4 T·m −15%, worse
Xmax4.8 mm +113%, better
Sensitivity92.3 dB −0.9
Oberton6B150
No current priceFs55 Hz −46%, better
Qts0.29 –
Vas14.6 L +284%, worse
BL10.1 T·m −25%, worse
Xmax5.5 mm +144%, better
Sensitivity91 dB −2.2, worse
Eighteen Sound6ND410
No current priceFs120 Hz +18%, worse
Qts0.24 −17%, better
Vas6.2 L +63%, worse
BL11.6 T·m −13%, worse
Xmax2 mm −11%, worse
Sensitivity98 dB +4.8, better
CIAREHSG160
No current priceFs38 Hz −63%, better
Qts0.29 –
Vas16.5 L +334%, worse
BL9.8 T·m −27%, worse
Xmax5.5 mm +144%, better
Sensitivity86.7 dB −6.5, worse
Oberton6NB150
No current priceFs62 Hz −39%, better
Qts0.28 −3%
Vas9.3 L +145%, worse
BL10.8 T·m −20%, worse
Xmax5.5 mm +144%, better
Sensitivity90.8 dB −2.4, worse
Sica6 CX 2 PL P
No current priceFs85 Hz −17%, better
Qts0.24 −17%, better
Vas5.4 L +42%, worse
BL12.8 T·m −5%
Xmax3.5 mm +56%, better
Sensitivity92.9 dB –
PeerlessNSM-0620R03-16
No current priceFs97 Hz −5%
Qts0.32 +10%, worse
Vas3.3 L −13%, better
BL21.9 T·m +63%, better
Xmax6.5 mm +191%, better
Sensitivity91.5 dB −1.7
Oberton6NMB200V
No current priceFs79 Hz −23%, better
Qts0.27 −8%
Vas9.5 L +151%, worse
BL15.2 T·m +14%, better
Xmax4.5 mm +100%, better
Sensitivity94.3 dB +1.1
CIAREPM160
No current priceFs66 Hz −35%, better
Qts0.31 +7%
Vas17.7 L +366%, worse
BL8 T·m −40%, worse
Xmax1.8 mm −20%, worse
Sensitivity94 dB +0.8
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
None of the shops we track lists delivery to the UK at checkout.