REDCATT154FIND
£82.89 · 56% more, worseFs38 Hz +36%, worse
Qts0.40 –
Vas187.2 L −23%, better
BL18.1 T·m −10%, worse
Xmax4.5 mm −42%, worse
Sensitivity95.8 dB +2.9, better
15-inch LF driver · 76 mm voice coil · 350 W
GRS 15PT-8 8Ω
8 Ω · 30–6000 Hz
£53.10
SteadyParts Express · 210 in stock · Ships from United States · All 2 offers
- Fs
- 28Hz
- Xmax
- 7.8mm
- SPL
- 93dB
- Pe
- 350W
- BL
- 20.2T·m
- Vd
- 647cm³
- Qts
- 0.41
- Vas
- 242L
GRS 15PT-8 is a 15-inch 8 ohm LF driver rated at 350 W RMS. The validated T/S data includes Fs 28 Hz, Qts 0.41, Vas 242.1 L, Xmax 7.8 mm, sensitivity 92.9 dB, plus 647 cm³ Vd and 65 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 £53.10.
The published T/S values agree with each other
Thiele/Small
- Fs
- 28Hz
- Qts
- 0.41
- Qes
- 0.43
- Qms
- 11.7
- Vas
- 242.1L
- Re
- 7.4Ω
- Le
- 2.10mH
Motor and cone
- BL
- 20.2T·m
- Sd
- 830cm²
- Mms
- 137g
- Xmax
- 7.8mm
- Vd †
- 647cm³
- Voice coil
- 76mm
Power and response
- Sensitivity †
- 92.9dB
- Manufacturer sensitivity
- 93dB
- Power
- 350W
- Impedance
- 8Ω
- Range
- 30–6000Hz
- EBP †
- 65 · Sealed or vented
Size and mounting
- Diameter
- 384.0mm
- Cutout
- 349.8mm
- Bolt circle
- 372.1mm
- Depth
- 149.9mm
Other published values
- Cms
- 0.24mm/N
- Power Peak
- 700
† Calculated by bits from the published values
What this validation status means
Everything else GRS lists
LF · Primary · 15″
- BL
- 20.2T·m
- Fs
- 28Hz
- Le
- 2.10mH
- Re
- 7.4Ω
- Sd
- 830cm²
- Cms
- 0.24mm/N
- Mms
- 137g
- Qes
- 0.43
- Qms
- 11.7
- Qts
- 0.41
- SPL
- 92.9dB
- Vas
- 242.1L
- Xmax
- 7.8mm
- Power
- 350W
- Impedance
- 8Ω
- Power Peak
- 700
- Sensitivity
- 93dB
- Low limit
- 30Hz
- Calculated sensitivity †
- 92.9dB
- High limit
- 6000Hz
- Manufacturer sensitivity
- 93dB
- Voice coil
- 76mm
- Diameter
- 384.0mm
- Depth
- 149.9mm
- Cutout
- 349.8mm
- Bolt circle
- 372.1mm
02
Compare
Same-size drivers, compared with the 15PT-8. Clear differences are green when better and red when worse.
This driver15PT-8
Best price
£53.10
Fs
28 Hz
Qts
0.41
Vas
242.1 L
BL
20.2 T·m
Xmax
7.8 mm
Sensitivity
92.9 dB
Power
350 W
SB AudienceBIANCO-15MW500
£110.00 · 107% more, worseFs39 Hz +39%, worse
Qts0.40 –
Vas171 L −29%, better
BL18.8 T·m −7%
Xmax7.6 mm –
Sensitivity96 dB +3.1, better
EminenceDELTA PRO 15A
£140.63 · 165% more, worseFs42 Hz +50%, worse
Qts0.40 –
Vas243.5 L –
BL14.5 T·m −28%, worse
Xmax4.3 mm −45%, worse
Sensitivity98.2 dB +5.3, better
CIAREPWA15.75
£146.53 · 176% more, worseFs44 Hz +57%, worse
Qts0.39 −5%
Vas135 L −44%, better
BL19.3 T·m −4%
Xmax7 mm −10%, worse
Sensitivity96.5 dB +3.6, better
£152.00 · 186% more, worse
Fs40 Hz +43%, worse
Qts0.37 −10%
Vas188 L −22%, better
BL19.7 T·m –
Xmax6.9 mm −12%, worse
Sensitivity97 dB +4.1, better
Beyma15MC500
£173.31 · 226% more, worseFs46 Hz +64%, worse
Qts0.45 +10%
Vas134 L −45%, better
BL18.3 T·m −9%
Xmax8 mm –
Sensitivity96.5 dB +3.6, better
RCFL15P540
£173.78 · 227% more, worseFs50 Hz +79%, worse
Qts0.39 −5%
Vas100 L −59%, better
BL21.4 T·m +6%
Xmax7 mm −10%, worse
Sensitivity96.9 dB +4, better
B&C15FW88
£181.46 · 242% more, worseFs49 Hz +75%, worse
Qts0.43 +5%
Vas103.7 L −57%, better
BL19.3 T·m −5%
Xmax8 mm –
Sensitivity96.4 dB +3.5, better
B&C15PS100
£185.00 · 248% more, worseFs39 Hz +39%, worse
Qts0.43 +5%
Vas103 L −57%, better
BL21.2 T·m +5%
Xmax8 mm –
Sensitivity93.2 dB –
Eighteen Sound15W750
£185.88 · 250% more, worseFs39 Hz +39%, worse
Qts0.37 −10%
Vas218 L −10%
BL17.6 T·m −13%, worse
Xmax8 mm –
Sensitivity97.2 dB +4.3, better
CIAREPW396
£186.72 · 252% more, worseFs43 Hz +54%, worse
Qts0.41 –
Vas129 L −47%, better
BL20.5 T·m –
Xmax6.5 mm −17%, worse
Sensitivity96 dB +3.1, better
FaitalPRO15FH520
£211.00 · 297% more, worseFs36 Hz +29%, worse
Qts0.39 −5%
Vas186.5 L −23%, better
BL18.4 T·m −9%
Xmax8.8 mm +12%, better
Sensitivity95.3 dB +2.4, better
Beyma15LX60V2
£223.94 · 322% more, worseFs42 Hz +50%, worse
Qts0.44 +7%
Vas105.5 L −56%, better
BL21.1 T·m +4%
Xmax8 mm –
Sensitivity94.4 dB +1.5
BMS15N630
£225.93 · 325% more, worseFs39 Hz +39%, worse
Qts0.42 –
Vas152 L −37%, better
BL19.8 T·m –
Xmax8 mm –
Sensitivity95 dB +2.1, better
B&C15FHX76
£249.00 · 369% more, worseFs40 Hz +43%, worse
Qts0.43 +5%
Vas186 L −23%, better
BL15.5 T·m −23%, worse
Xmax7 mm −10%, worse
Sensitivity96.1 dB +3.2, better
B&C15FCX76
£301.96 · 469% more, worseFs40 Hz +43%, worse
Qts0.44 +7%
Vas187 L −23%, better
BL15.6 T·m −23%, worse
Xmax7.5 mm −4%
Sensitivity96.1 dB +3.2, better
Eighteen Sound15NTLW3500
£319.85 · 502% more, worseFs45 Hz +61%, worse
Qts0.39 −5%
Vas131 L −46%, better
BL19.5 T·m −3%
Xmax8.3 mm +6%
Sensitivity96.8 dB +3.9, better
Beyma15CXA400ND
£401.87 · 657% more, worseFs40 Hz +43%, worse
Qts0.36 −12%, better
Vas196 L −19%, better
BL19 T·m −6%
Xmax6 mm −23%, worse
Sensitivity97.1 dB +4.2, better
Sica15 S 3 PL
No current priceFs33 Hz +18%, worse
Qts0.38 −7%
Vas230 L −5%
BL17.1 T·m −15%, worse
Xmax8 mm –
Sensitivity95.3 dB +2.4, better
Precision DevicesPD.154NR1
No current priceFs46 Hz +64%, worse
Qts0.40 –
Vas158 L −35%, better
BL18.5 T·m −8%
Xmax8.5 mm +9%
Sensitivity97.6 dB +4.7, better
CelestionTSQ1535
No current priceFs50 Hz +79%, worse
Qts0.40 −3%
Vas94.0 L −61%, better
BL20.6 T·m –
Xmax8 mm –
Sensitivity96.4 dB +3.5, better
EminenceCANNABASS CB3015N-8
No current priceFs41 Hz +45%, worse
Qts0.39 −5%
Vas162.9 L −33%, better
BL17.8 T·m −12%, worse
Xmax7.2 mm −7%
Sensitivity96.1 dB +3.2, better
CelestionFTR15-3070E
No current priceFs46 Hz +64%, worse
Qts0.38 −8%
Vas145.8 L −40%, better
BL17.9 T·m −12%, worse
Xmax7.8 mm –
Sensitivity97.2 dB +4.3, better
Beyma15CXA400FE
No current priceFs40 Hz +43%, worse
Qts0.42 –
Vas191 L −21%, better
BL18.2 T·m −10%
Xmax6 mm −23%, worse
Sensitivity96.6 dB +3.7, better
No current price
Fs37 Hz +32%, worse
Qts0.39 −5%
Vas236 L –
BL15.9 T·m −21%, worse
Xmax6.5 mm −17%, worse
Sensitivity96.6 dB +3.7, better
RCFM15P550
No current priceFs45 Hz +61%, worse
Qts0.37 −10%
Vas140 L −42%, better
BL19.8 T·m –
Xmax7 mm −10%, worse
Sensitivity97 dB +4.1, better
P.Audio15FT-100SW
No current priceFs42 Hz +50%, worse
Qts0.40 –
Vas90 L −63%, better
BL23.5 T·m +17%, better
Xmax7.5 mm −4%
Sensitivity94 dB +1.1
Oberton15NCX
No current priceFs44 Hz +56%, worse
Qts0.36 −12%, better
Vas138.4 L −43%, better
BL18.6 T·m −8%
Xmax7.8 mm –
Sensitivity96.9 dB +4, better
P.Audio15NT-100SW
No current priceFs38 Hz +36%, worse
Qts0.43 +5%
Vas115.7 L −52%, better
BL21.2 T·m +5%
Xmax9 mm +15%, better
Sensitivity93.4 dB +0.5
Oberton15MB500
No current priceFs42 Hz +48%, worse
Qts0.34 −17%, better
Vas161.5 L −33%, better
BL18.5 T·m −8%
Xmax7.8 mm –
Sensitivity97.2 dB +4.3, better
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- Parts Express4.8 out of 545 ratings · Checked 26 Oct 2026Read reviews on Parts Express
- SoundImports5.0 out of 54 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 |
|---|---|---|---|---|
Parts Express Import VAT and duty may apply | £53.10, the lowest price | 210 in stock | Visit shop at Parts Express | |
SoundImports Import VAT and duty may apply | £101.27 | 91% above the lowest price | 6 in stock | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr