Dayton AudioDC300-8
£66.15 · 77% less, betterFs23 Hz +35%, worse
Qts0.33 +3%
Vas181.5 L −8%
BL16.3 T·m +55%, better
Xmax4.3 mm −66%, worse
Sensitivity89.7 dB +3.1, better
12-inch LF driver · Discovery series · 51 mm voice coil · 150 W
Scanspeak 30W/4558T00 4Ω
4 Ω
£311.94
5.2%Falcon Acoustics · In stock · All 4 offers
- Fs
- 17Hz
- Xmax
- 12.5mm
- SPL
- 87dB
- Pe
- 150W
- BL
- 10.5T·m
- Vd
- 583cm³
- Qts
- 0.32
- Vas
- 197L
Scanspeak 30W/4558T00 is a 12-inch 4 ohm LF driver rated at 150 W RMS. The validated T/S data includes Fs 17 Hz, Qts 0.32, Vas 197 L, Xmax 12.5 mm, sensitivity 86.6 dB, plus 583 cm³ Vd and 50 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 £293.02.
The published T/S values agree with each other
Thiele/Small
- Fs
- 17Hz
- Qts
- 0.32
- Qes
- 0.34
- Qms
- 5.0
- Vas
- 197L
- Re
- 2.6Ω
- Le
- 0.83mH
Motor and cone
- BL
- 10.5T·m
- Sd
- 466cm²
- Mms
- 135g
- Xmax
- 12.5mm
- Vd †
- 583cm³
- Voice coil
- 51mm
Power and response
- Sensitivity †
- 86.6dB
- Manufacturer sensitivity
- 89dB
- Power
- 150W
- Impedance
- 4Ω
- Min. impedance
- 3.4Ω
- EBP †
- 50 · Leans sealed
Size and mounting
- Diameter
- 300mm
Other published values
- Cms
- 0.65mm/N
- Rms
- 2.88kg/s
- Xmech
- 28
- Power Peak
- 350
Sensitivity shows 86.6 dB, calculated from the T/S values. Scanspeak publishes 89.0 dB, 2.4 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Scanspeak lists
LF · Primary · 12″
- BL
- 10.5T·m
- Fs
- 17Hz
- Le
- 0.83mH
- Re
- 2.6Ω
- Sd
- 466cm²
- Cms
- 0.65mm/N
- Mms
- 135g
- Qes
- 0.34
- Qms
- 5.0
- Qts
- 0.32
- Rms
- 2.88kg/s
- SPL
- 86.6dB
- Vas
- 197L
- Xmax
- 12.5mm
- Xmech
- 28
- Power
- 150W
- Impedance
- 4Ω
- Power Peak
- 350
- Sensitivity
- 89dB
- Calculated sensitivity †
- 86.6dB
- Manufacturer sensitivity
- 89dB
- Min. impedance
- 3.4Ω
- Voice coil
- 51mm
- Diameter
- 300mm
02
Compare
Same-size drivers, compared with the 30W/4558T00. Clear differences are green when better and red when worse.
This driver30W/4558T00
Best price
£293.02
Fs
17 Hz
Qts
0.32
Vas
197 L
BL
10.5 T·m
Xmax
12.5 mm
Sensitivity
86.6 dB
Power
150 W
Dayton AudioDS315-8
£89.75 · 69% less, betterFs24 Hz +42%, worse
Qts0.31 −3%
Vas159 L −19%, better
BL15.6 T·m +49%, better
Xmax5.5 mm −56%, worse
Sensitivity89.9 dB +3.3, better
MonacorSP-300P
£91.27 · 69% less, betterFs30 Hz +76%, worse
Qts0.31 −3%
Vas266 L +35%, worse
BL11.7 T·m +11%, better
Xmax2.5 mm −80%, worse
Sensitivity94.9 dB +8.3, better
Dayton AudioSD315A-88
£96.25 · 67% less, betterFs24 Hz +42%, worse
Qts0.33 +3%
Vas151.7 L −23%, better
BL11.9 T·m +13%, better
Xmax7 mm −44%, worse
Sensitivity89.7 dB +3.1, better
CIAREHW321
£113.81 · 61% less, betterFs27 Hz +59%, worse
Qts0.33 +3%
Vas205 L +4%
BL13.2 T·m +25%, better
Xmax7.3 mm −42%, worse
Sensitivity92.4 dB +5.8, better
Eighteen Sound12W500
£128.11 · 56% less, betterFs49 Hz +188%, worse
Qts0.35 +9%
Vas101 L −49%, better
BL9.6 T·m −9%
Xmax4 mm −68%, worse
Sensitivity97.1 dB +10.5, better
ETON11-612/C8/50 RP
£150.67 · 49% less, betterFs24 Hz +41%, worse
Qts0.29 −9%
Vas152 L −23%, better
BL11.4 T·m +9%
Xmax5 mm −60%, worse
Sensitivity90.5 dB +3.9, better
FaitalPRO12RS430
£158.25 · 46% less, betterFs30 Hz +76%, worse
Qts0.35 +9%
Vas131.2 L −33%, better
BL18 T·m +71%, better
Xmax13.6 mm +9%
Sensitivity92 dB +5.4, better
SB AcousticsSB34SWNRX-S75-6
£158.91 · 46% less, betterFs19 Hz +12%, worse
Qts0.32 –
Vas164 L −17%, better
BL15.4 T·m +47%, better
Xmax11 mm −12%, worse
Sensitivity87.2 dB +0.6
SB AcousticsSB34NRX75-6
£159.01 · 46% less, betterFs19 Hz +12%, worse
Qts0.40 +25%, worse
Vas260 L +32%, worse
BL10.7 T·m –
Xmax11 mm −12%, worse
Sensitivity88.2 dB +1.6
EminenceKAPPALITE 3012LF
£175.00 · 40% less, betterFs37 Hz +118%, worse
Qts0.32 –
Vas106.7 L −46%, better
BL16.7 T·m +59%, better
Xmax9.1 mm −27%, worse
Sensitivity94 dB +7.4, better
EminenceLAB 12C
£194.49 · 34% less, betterFs23 Hz +35%, worse
Qts0.33 +3%
Vas128.3 L −35%, better
BL13.4 T·m +27%, better
Xmax13 mm +4%
Sensitivity88.6 dB +2, better
CelestionFTR12-4080DL
£200.12 · 32% less, betterFs29 Hz +70%, worse
Qts0.30 −5%
Vas68.6 L −65%, better
BL24.1 T·m +129%, better
Xmax13.6 mm +9%
Sensitivity88.8 dB +2.2, better
ETON12-612/C8/62 RP
£209.29 · 29% less, betterFs30 Hz +76%, worse
Qts0.32 –
Vas134 L −32%, better
BL15.7 T·m +50%, better
Xmax8.5 mm −32%, worse
Sensitivity92.3 dB +5.7, better
SB AcousticsSB34NRXL75-8
£218.43 · 25% less, betterFs22 Hz +29%, worse
Qts0.28 −12%, better
Vas205 L +4%
BL16.6 T·m +58%, better
Xmax10 mm −20%, worse
Sensitivity90.8 dB +4.2, better
B&C12FG100
£227.46 · 22% less, betterFs34 Hz +100%, worse
Qts0.32 –
Vas53 L −73%, better
BL17.2 T·m +64%, better
Xmax10.3 mm −18%, worse
Sensitivity89.9 dB +3.3, better
FaitalPRO12RS1066
£250.36 · 15% less, betterFs42 Hz +147%, worse
Qts0.33 +3%
Vas31.5 L −84%, better
BL24.8 T·m +136%, better
Xmax12.4 mm –
Sensitivity90.4 dB +3.8, better
Dayton AudioRSS315HO-4
£274.72 · 6% less, betterFs26 Hz +54%, worse
Qts0.31 −3%
Vas53.7 L −73%, better
BL20 T·m +90%, better
Xmax12.3 mm –
Sensitivity86.7 dB –
Scanspeak28W/4878T00
£586.08 · 100% more, worseFs18 Hz +6%
Qts0.30 −6%
Vas127 L −36%, better
BL11.2 T·m +7%
Xmax14 mm +12%, better
Sensitivity85.7 dB −0.9
Scanspeak32W/8878T01
£586.08 · 100% more, worseFs19 Hz +12%, worse
Qts0.33 +3%
Vas234 L +19%, worse
BL15.6 T·m +49%, better
Xmax7.5 mm −40%, worse
Sensitivity88.7 dB +2.1, better
Scanspeak32W/4878T01
£586.08 · 100% more, worseFs23 Hz +35%, worse
Qts0.28 −12%, better
Vas170 L −14%, better
BL13 T·m +24%, better
Xmax7 mm −44%, worse
Sensitivity90.4 dB +3.8, better
Scanspeak32W/4878T00
£623.94 · 113% more, worseFs18 Hz +6%
Qts0.32 –
Vas204 L +4%
BL12.5 T·m +19%, better
Xmax14 mm +12%, better
Sensitivity87.6 dB +1
Acoustic EleganceTD12S-4
No current priceFs32 Hz +85%, worse
Qts0.34 +6%
Vas160 L −19%, better
BL10.8 T·m –
Xmax14 mm +12%, better
Sensitivity93.2 dB +6.6, better
Supravox285 GMF
No current priceFs48 Hz +181%, worse
Qts0.33 +3%
Vas157 L −20%, better
BL10.6 T·m –
Xmax3.4 mm −73%, worse
Sensitivity99 dB +12.4, better
Acoustic EleganceTD12X-4
No current priceFs34 Hz +100%, worse
Qts0.28 −12%, better
Vas160 L −19%, better
BL10.1 T·m −4%
Xmax14 mm +12%, better
Sensitivity95.1 dB +8.5, better
Acoustic EleganceTD12S-8
No current priceFs32 Hz +85%, worse
Qts0.34 +6%
Vas160 L −19%, better
BL13.3 T·m +27%, better
Xmax14 mm +12%, better
Sensitivity93.2 dB +6.6, better
Audio Technology12 B 77 25 10
No current priceFs25 Hz +47%, worse
Qts0.30 −6%
Vas250 L +27%, worse
BL12.4 T·m +18%, better
Xmax8.6 mm −31%, worse
Sensitivity92.6 dB +6, better
Acoustic EleganceTD12X-8
No current priceFs34 Hz +100%, worse
Qts0.28 −12%, better
Vas160 L −19%, better
BL16.4 T·m +56%, better
Xmax14 mm +12%, better
Sensitivity95.1 dB +8.5, better
CIARECSD124-22
No current priceFs34 Hz +100%, worse
Qts0.30 −6%
Vas54 L −73%, better
BL18.2 T·m +73%, better
Xmax13 mm +4%
Sensitivity90.2 dB +3.6, better
Oberton12NSW600
No current priceFs42 Hz +147%, worse
Qts0.32 –
Vas62.3 L −68%, better
BL20.2 T·m +92%, better
Xmax14.3 mm +14%, better
Sensitivity93.5 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 54 ratings · Checked 24 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 |
|---|---|---|---|---|
Falcon Acoustics | £311.94, the lowest price | In stock | Visit shop at Falcon Acoustics | |
Willys-Hifi | £329.22 | 5.5% above the lowest price | Stock not listed | Visit shop at Willys-Hifi |
SoundImports Import VAT and duty may apply | £293.02 | 19 in stock | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr
Recent changes
- 1 OctWillys-Hifi£337.95 → £329.22Down 2.6% from £337.95
- 30 SepWillys-Hifi£335.95 → £337.95Up 0.6% from £335.95
- 29 SepWillys-Hifi£336.95 → £335.95Down 0.3% from £336.95