REDCATT61FIND
£29.31 · 36% less, betterFs130 Hz +24%, worse
Qts0.62 –
Vas2.6 L −59%, better
BL15.6 T·m +77%, better
Xmax2.3 mm +31%, better
Sensitivity91.2 dB −0.9
6.5-inch LF driver · TF0615 series · 38 mm voice coil · 100 W
Celestion TF0615 8Ω
8 Ω · 85–6000 Hz
£46.00
2.1%Thomann · In stock · All 1 offer
- Fs
- 105Hz
- Xmax
- 1.8mm
- SPL
- 92dB
- Pe
- 100W
- BL
- 8.8T·m
- Vd
- 27cm³
- Qts
- 0.61
- Vas
- 6L
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
LF frequency response
Frequency response
137 plotted pointsMedium confidence168 selected pixels of 365
Published graphs
Celestion TF0615 is a 6.5-inch 8 ohm LF driver rated at 100 W RMS. The validated T/S data includes Fs 105 Hz, Qts 0.61, Vas 6.4 L, Xmax 1.8 mm, sensitivity 92.1 dB, plus 27 cm³ Vd and 146 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 £46.00.
The published T/S values agree with each other
Thiele/Small
- Fs
- 105Hz
- Qts
- 0.61
- Qes
- 0.72
- Qms
- 3.9
- Vas
- 6.4L
- Re
- 7.1Ω
- Le
- 0.47mH
Motor and cone
- BL
- 8.8T·m
- Sd
- 154cm²
- Mms
- 12g
- Xmax
- 1.8mm
- Vd †
- 27cm³
- Voice coil
- 38mm
Power and response
- Sensitivity †
- 92.1dB
- Manufacturer sensitivity
- 95dB
- Power
- 100W
- Impedance
- 8Ω
- Range
- 85–6000Hz
- EBP †
- 146 · Leans vented
Size and mounting
- Diameter
- 178mm
- Cutout
- 147mm
- Bolt circle
- 168.5mm
- Depth
- 74mm
- Weight
- 1.4kg
Other published values
- Cms
- 0.19mm/N
- Rms
- 2.01kg/s
- Power Program
- 200
Sensitivity shows 92.1 dB, calculated from the T/S values. Celestion publishes 95.0 dB, 2.9 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Celestion lists
LF · Primary · 6.5″
- BL
- 8.8T·m
- Fs
- 105Hz
- Le
- 0.47mH
- Re
- 7.1Ω
- Sd
- 154cm²
- Cms
- 0.19mm/N
- Mms
- 12g
- Qes
- 0.72
- Qms
- 3.9
- Qts
- 0.61
- Rms
- 2.01kg/s
- SPL
- 92.1dB
- Vas
- 6.4L
- Xmax
- 1.8mm
- Power
- 100W
- Impedance
- 8Ω
- Sensitivity
- 95dB
- Low limit
- 85Hz
- Power Program
- 200
- Calculated sensitivity †
- 92.1dB
- High limit
- 6000Hz
- Manufacturer sensitivity
- 95dB
- Voice coil
- 38mm
- Weight
- 1.4kg
- Diameter
- 178mm
- Depth
- 74mm
- Cutout
- 147mm
- Bolt circle
- 168.5mm
02
Compare
Same-size drivers, compared with the TF0615. Clear differences are green when better and red when worse.
This driverTF0615
Best price
£46.00
Fs
105 Hz
Qts
0.61
Vas
6.4 L
BL
8.8 T·m
Xmax
1.8 mm
Sensitivity
92.1 dB
Power
100 W
FaitalPRO6FE200
£29.50 · 36% less, betterFs120 Hz +15%, worse
Qts0.67 +10%, worse
Vas3.6 L −44%, better
BL8.2 T·m −7%
Xmax4.7 mm +167%, better
Sensitivity91.2 dB −0.9
Dayton AudioDA175-8
£29.91 · 35% less, betterFs39 Hz −63%, better
Qts0.58 −5%
Vas16.3 L +154%, worse
BL7.2 T·m −19%, worse
Xmax4.3 mm +143%, better
Sensitivity83.4 dB −8.7, worse
Dayton AudioMB620-8
£33.65 · 27% less, betterFs104 Hz –
Qts0.59 –
Vas6.8 L +6%
BL6.7 T·m −25%, worse
Xmax2 mm +14%, better
Sensitivity92.5 dB –
Sica6 D 1.5 CS
£37.26 · 19% less, betterFs109 Hz +4%
Qts0.63 +4%
Vas4.4 L −31%, better
BL7.4 T·m −17%, worse
Xmax1.5 mm −14%, worse
Sensitivity90.6 dB −1.5
Dayton AudioLW150-4
£41.13 · 11% less, betterFs63 Hz −40%, better
Qts0.64 +5%
Vas3.5 L −46%, better
BL6.5 T·m −26%, worse
Xmax4 mm +129%, better
Sensitivity82.8 dB −9.3, worse
PeerlessHDS-P830883
£42.08 · 9% less, betterFs68 Hz −35%, better
Qts0.67 +10%, worse
Vas6.8 L +6%
BL7.8 T·m −12%, worse
Xmax7.6 mm +335%, better
Sensitivity85.5 dB −6.6, worse
PRV Audio6MR400-4
£48.52 · 5% more, worseFs144 Hz +38%, worse
Qts0.60 –
Vas4.4 L −31%, better
BL6.4 T·m −28%, worse
Xmax3.3 mm +86%, better
Sensitivity95.2 dB +3.1, better
EminenceALPHA-6A
£59.00 · 28% more, worseFs103 Hz –
Qts0.54 −11%, better
Vas5.8 L −10%
BL8 T·m −10%
Xmax3.5 mm +100%, better
Sensitivity92.3 dB –
FaitalPRO6PR110
£62.80 · 37% more, worseFs100 Hz −4%
Qts0.53 −13%, better
Vas5.6 L −13%, better
BL8.5 T·m −4%
Xmax2.8 mm +57%, better
Sensitivity91.7 dB –
EminenceBETA-6A
£64.09 · 39% more, worseFs123 Hz +17%, worse
Qts0.56 −8%
Vas3.5 L −45%, better
BL8.1 T·m −8%
Xmax4.5 mm +157%, better
Sensitivity92 dB –
VisatonW 165 A
£72.80 · 58% more, worseFs60 Hz −43%, better
Qts0.63 +4%
Vas7.8 L +22%, worse
BL5.0 T·m −44%, worse
Xmax4.7 mm +166%, better
Sensitivity85.6 dB −6.5, worse
LavoceCSF061.70K
£86.22 · 87% more, worseFs97 Hz −7%
Qts0.69 +13%, worse
Vas6.5 L –
BL6.9 T·m −22%, worse
Xmax3.9 mm +123%, better
Sensitivity90.5 dB −1.6
WavecorSW146WA02
£94.87 · 106% more, worseFs54 Hz −48%, better
Qts0.53 −13%, better
Vas5.5 L −14%, better
BL7.8 T·m −12%, worse
Xmax6 mm +243%, better
Sensitivity83.8 dB −8.3, worse
PRV Audio6MR500-NDY
£136.44 · 197% more, worseFs105 Hz –
Qts0.53 −13%, better
Vas5.1 L −20%, better
BL9.8 T·m +11%, better
Xmax4.2 mm +141%, better
Sensitivity92.4 dB –
Tang BandW6-2253S
£142.30 · 209% more, worseFs40 Hz −62%, better
Qts0.51 −16%, better
Vas6.3 L –
BL7.9 T·m −11%, worse
Xmax5 mm +186%, better
Sensitivity80.3 dB −11.8, worse
PRV Audio6MB400
No current priceFs117 Hz +12%, worse
Qts0.60 –
Vas5.7 L −11%, better
BL8.3 T·m −7%
Xmax4 mm +129%, better
Sensitivity93.6 dB +1.5
No photo
PHL Audio1120
No current priceFs135 Hz +29%, worse
Qts0.56 −8%
Vas4.4 L −31%, better
BL8.5 T·m −4%
Xmax2 mm +14%, better
Sensitivity94.4 dB +2.3, better
No photo
PHL Audio1120NDU
No current priceFs135 Hz +29%, worse
Qts0.56 −8%
Vas4.4 L −31%, better
BL8.5 T·m −4%
Xmax2 mm +14%, better
Sensitivity94.4 dB +2.3, better
CIAREPWA6.38
No current priceFs77 Hz −26%, better
Qts0.56 −8%
Vas5.6 L −13%, better
BL8.7 T·m –
Xmax4 mm +129%, better
Sensitivity88.2 dB −3.9, worse
PRV Audio6MR360
No current priceFs128 Hz +22%, worse
Qts0.60 –
Vas4.9 L −23%, better
BL8.3 T·m −6%
Xmax4 mm +129%, better
Sensitivity94.2 dB +2.1, better
EminenceFS6.15A8
No current priceFs74 Hz −29%, better
Qts0.52 −14%, better
Vas6 L −6%
BL8.9 T·m –
Xmax5 mm +186%, better
Sensitivity88.4 dB −3.7, worse
Dayton AudioE150MR-8
No current priceFs74 Hz −29%, better
Qts0.58 −5%
Vas8 L +25%, worse
BL6.1 T·m −31%, worse
Xmax2.7 mm +54%, better
Sensitivity88.9 dB −3.2, worse
Sica6 D 1.5 SL
No current priceFs110 Hz +5%
Qts0.46 −24%, better
Vas4 L −38%, better
BL8.3 T·m −6%
Xmax1.5 mm −14%, worse
Sensitivity91.9 dB –
PeerlessFSL-0615R01-08
No current priceFs84 Hz −20%, better
Qts0.45 −26%, better
Vas6.7 L +5%
BL8.5 T·m −4%
Xmax6 mm +243%, better
Sensitivity91 dB −1.1
CIAREHMB165
No current priceFs86 Hz −18%, better
Qts0.53 −13%, better
Vas8.6 L +34%, worse
BL7 T·m −21%, worse
Xmax3.5 mm +100%, better
Sensitivity91.4 dB −0.7
PeerlessSDS-160F25PR01-08
No current priceFs48 Hz −54%, better
Qts0.58 −5%
Vas21.8 L +240%, worse
BL6.6 T·m −25%, worse
Xmax8.1 mm +360%, better
Sensitivity87.5 dB −4.6, worse
PRV Audio6MR360-4
No current priceFs143 Hz +36%, worse
Qts0.57 −6%
Vas3.8 L −41%, better
BL6.7 T·m −24%, worse
Xmax4 mm +129%, better
Sensitivity94.7 dB +2.6, better
No photo
LavoceCSF061.21
No current priceFs90 Hz −14%, better
Qts0.67 +10%, worse
Vas8.5 L +32%, worse
BL6.1 T·m −31%, worse
Xmax3.2 mm +83%, better
Sensitivity91 dB −1.1
PRV Audio6MB550FT-4
No current priceFs86 Hz −18%, better
Qts0.34 −44%, better
Vas6.6 L –
BL8.6 T·m –
Xmax5.4 mm +209%, better
Sensitivity92.9 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
- Thomann4.5 out of 512 ratings · Checked 26 Oct 2026Read reviews on Thomann
Each shop collects its own ratings. Bits shows them as published and doesn't verify them.
| Shop | Price | Against the lowest | Stock | Link |
|---|---|---|---|---|
Thomann | £46.00, the lowest price | In stock | Visit shop at Thomann |
Best price over time
Tracked since 20 Apr
Recent changes
- 25 OctThomann£47.00 → £46.00Down 2.1% from £47.00
- 2 JulThomann£48.00 → £47.00Down 2.1% from £48.00