REDCATT4FR-1
£11.96 · 61% less, betterFs79 Hz –
Qts0.52 −15%, better
Vas1.8 L −9%
BL4.8 T·m +6%
Xmax2.8 mm −30%, worse
Sensitivity83.7 dB –
4-inch LF driver · 30 W
Dayton Audio ND105-4 4Ω
4 Ω · 60–10000 Hz
- Fs
- 79Hz
- Xmax
- 4mm
- SPL
- 84dB
- Pe
- 30W
- BL
- 4.5T·m
- Vd
- 21cm³
- Qts
- 0.61
- Vas
- 2L
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
impedance
Impedance response
240 plotted pointsMedium confidence1,398 selected pixels of 1,398
Dayton Audio ND105-4 is a 4-inch 4 ohm LF driver rated at 30 W RMS. The validated T/S data includes Fs 79 Hz, Qts 0.61, Vas 2.0 L, Xmax 4 mm, sensitivity 83.7 dB, plus 21 cm³ Vd and 119 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 £30.48.
The published T/S values agree with each other
Thiele/Small
- Fs
- 79Hz
- Qts
- 0.61
- Qes
- 0.66
- Qms
- 7.4
- Vas
- 2.0L
- Re
- 3.7Ω
- Le
- 0.76mH
Motor and cone
- BL
- 4.5T·m
- Sd
- 52cm²
- Mms
- 7g
- Xmax
- 4mm
- Vd †
- 21cm³
Power and response
- Sensitivity †
- 83.7dB
- Manufacturer sensitivity
- 86.8dB
- Power
- 30W
- Impedance
- 4Ω
- Range
- 60–10000Hz
- EBP †
- 119 · Leans vented
Size and mounting
- Diameter
- 105mm
- Cutout
- 93mm
- Depth
- 67mm
- Weight
- 0.36kg
Other published values
- Cms
- 0.55mm/N
- Power Peak
- 60
Sensitivity shows 83.7 dB, calculated from the T/S values. Dayton Audio publishes 86.8 dB, 3.1 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Dayton Audio lists
LF · Primary · 4″
- BL
- 4.5T·m
- Fs
- 79Hz
- Le
- 0.76mH
- Re
- 3.7Ω
- Sd
- 52cm²
- Cms
- 0.55mm/N
- Mms
- 7g
- Qes
- 0.66
- Qms
- 7.4
- Qts
- 0.61
- SPL
- 83.7dB
- Vas
- 2.0L
- Xmax
- 4mm
- Power
- 30W
- Impedance
- 4Ω
- Power Peak
- 60
- Sensitivity
- 86.8dB
- Low limit
- 60Hz
- Calculated sensitivity †
- 83.7dB
- High limit
- 10000Hz
- Manufacturer sensitivity
- 86.8dB
- Weight
- 0.36kg
- Diameter
- 105mm
- Depth
- 67mm
- Cutout
- 93mm
02
Compare
Same-size drivers, compared with the ND105-4. Clear differences are green when better and red when worse.
This driverND105-4
Best price
£30.48
Fs
79 Hz
Qts
0.61
Vas
2.0 L
BL
4.5 T·m
Xmax
4 mm
Sensitivity
83.7 dB
Power
30 W
GRS4SMP-8
£11.96 · 61% less, betterFs63 Hz −20%, better
Qts0.65 +7%
Vas4 L +103%, worse
BL4.2 T·m −7%
Xmax4 mm –
Sensitivity82.8 dB −0.9
PeerlessSDS-100F25CP09-04
£12.90 · 58% less, betterFs80 Hz –
Qts0.53 −13%, better
Vas2.0 L –
BL4.7 T·m +4%
Xmax5.0 mm +26%, better
Sensitivity84.4 dB +0.7
VisatonFR 10
£13.48 · 56% less, betterFs90 Hz +14%, worse
Qts0.54 −11%, better
Vas2.3 L +17%, worse
BL4.6 T·m –
Xmax1.5 mm −63%, worse
Sensitivity85.8 dB +2.1, better
LavoceWSF030.70
£13.56 · 55% less, betterFs112 Hz +42%, worse
Qts0.61 –
Vas0.9 L −55%, better
BL4.7 T·m –
Xmax3.3 mm −18%, worse
Sensitivity84.5 dB +0.8
REDCATT4FR-2
£16.62 · 45% less, betterFs80 Hz –
Qts0.51 −16%, better
Vas2.0 L –
BL4.6 T·m –
Xmax0.35 mm −91%, worse
Sensitivity84.4 dB +0.7
Sica3.5 F 1 CS
£16.66 · 45% less, betterFs107 Hz +36%, worse
Qts0.57 −7%
Vas1.4 L −29%, better
BL4.2 T·m −7%
Xmax1.5 mm −63%, worse
Sensitivity86.4 dB +2.7, better
PeerlessGBS-115N25AL01-04
£21.32 · 30% less, betterFs90 Hz +14%, worse
Qts0.63 +3%
Vas1.8 L −9%
BL4.5 T·m –
Xmax4.8 mm +21%, better
Sensitivity84.3 dB +0.6
Sica3.5 L 1 SL
£23.36 · 23% less, betterFs108 Hz +37%, worse
Qts0.57 −7%
Vas1.4 L −29%, better
BL4.3 T·m −6%
Xmax1.5 mm −63%, worse
Sensitivity86.6 dB +2.9, better
CIAREPA087
£24.28 · 20% less, betterFs74 Hz −6%
Qts0.62 –
Vas2.2 L +12%, worse
BL3.5 T·m −24%, worse
Xmax2 mm −50%, worse
Sensitivity83 dB −0.7
Dayton AudioND90-4
£25.04 · 18% less, betterFs90 Hz +15%, worse
Qts0.63 +3%
Vas1.1 L −46%, better
BL3.5 T·m −23%, worse
Xmax4 mm –
Sensitivity82.4 dB −1.3
Dayton AudioND90-8
£25.87 · 15% less, betterFs71 Hz −10%, better
Qts0.65 +7%
Vas1.8 L −10%, better
BL4.3 T·m −5%
Xmax4 mm –
Sensitivity81.2 dB −2.5, worse
Dayton AudioRS100P-8
£29.91 · 2% lessFs96 Hz +21%, worse
Qts0.54 −11%, better
Vas1.8 L −8%
BL4.0 T·m −13%, worse
Xmax3.7 mm −7%
Sensitivity85.5 dB +1.8
Dayton AudioRS100P-4
£29.91 · 2% lessFs85 Hz +8%
Qts0.54 −11%, better
Vas1.9 L −6%
BL3.0 T·m −35%, worse
Xmax4 mm –
Sensitivity84.3 dB +0.6
Dayton AudioRS100-8
£29.91 · 2% lessFs92 Hz +17%, worse
Qts0.58 −5%
Vas1.4 L −27%, better
BL4.2 T·m −7%
Xmax3.5 mm −13%, worse
Sensitivity83.7 dB –
Dayton AudioRS100-4
£29.91 · 2% lessFs85 Hz +8%
Qts0.53 −13%, better
Vas1.4 L −26%, better
BL3.2 T·m −30%, worse
Xmax4 mm –
Sensitivity83.3 dB –
Dayton AudioND105-8
£30.48 · Same priceFs67 Hz −15%, better
Qts0.66 +8%
Vas3.0 L +51%, worse
BL5.4 T·m +20%, better
Xmax4 mm –
Sensitivity82.8 dB −0.9
CIAREPA100
£30.98 · 2% moreFs100 Hz +27%, worse
Qts0.59 −3%
Vas2.5 L +27%, worse
BL4.4 T·m –
Xmax2.5 mm −38%, worse
Sensitivity87.6 dB +3.9, better
WavecorWF095WA02
£41.14 · 35% more, worseFs86 Hz +9%
Qts0.62 –
Vas1.6 L −19%, better
BL3.6 T·m −20%, worse
Xmax2.7 mm −32%, worse
Sensitivity83.7 dB –
CelestionAN3510
£41.86 · 37% more, worseFs113 Hz +44%, worse
Qts0.65 +6%
Vas1.9 L −5%
BL4.6 T·m –
Xmax2.3 mm −44%, worse
Sensitivity87.7 dB +4, better
CelestionTFX0412
£69.00 · 126% more, worseFs95 Hz +21%, worse
Qts0.59 −3%
Vas2.2 L +11%, worse
BL5.4 T·m +19%, better
Xmax4 mm –
Sensitivity86.5 dB +2.8, better
VisatonB 80
£72.39 · 138% more, worseFs110 Hz +40%, worse
Qts0.63 +3%
Vas1.8 L −9%
BL4.2 T·m −8%
Xmax2.2 mm −45%, worse
Sensitivity87.4 dB +3.7, better
PRV Audio5MR450-NDY
£115.51 · 279% more, worseFs159 Hz +102%, worse
Qts0.64 +5%
Vas1.5 L −25%, better
BL9.4 T·m +108%, better
Xmax3.5 mm −14%, worse
Sensitivity91.5 dB +7.8, better
FaitalPRO5HX220
£184.17 · 504% more, worseFs135 Hz +72%, worse
Qts0.59 −3%
Vas2.2 L +12%, worse
BL7.7 T·m +70%, better
Xmax4.6 mm +14%, better
Sensitivity91.4 dB +7.7, better
WavecorSW084OM02
No current priceFs77 Hz –
Qts0.53 −13%, better
Vas1.7 L −14%, better
BL4.6 T·m –
Xmax4.5 mm +13%, better
Sensitivity83.4 dB –
EminenceALPHA 4-4
No current priceFs120 Hz +52%, worse
Qts0.63 +3%
Vas1.8 L −11%, better
BL4.1 T·m −9%
Xmax2.6 mm −35%, worse
Sensitivity88.4 dB +4.7, better
Dayton AudioDMA90-8
No current priceFs94 Hz +20%, worse
Qts0.57 −7%
Vas1.7 L −14%, better
BL4.7 T·m +4%
Xmax2.5 mm −38%, worse
Sensitivity84.9 dB +1.2
Tang BandW3-582A
No current priceFs100 Hz +27%, worse
Qts0.60 –
Vas1.8 L −10%, better
BL3.6 T·m −21%, worse
Xmax0.25 mm −94%, worse
Sensitivity86.2 dB +2.5, better
Tang BandW3-532SQ
No current priceFs100 Hz +27%, worse
Qts0.61 –
Vas1.7 L −15%, better
BL3.5 T·m −22%, worse
Xmax0.2 mm −95%, worse
Sensitivity85.9 dB +2.2, better
REDCATT35FR-2
No current priceFs128 Hz +63%, worse
Qts0.63 +3%
Vas1.1 L −42%, better
BL4.8 T·m +6%
Xmax2.4 mm −41%, worse
Sensitivity87.5 dB +3.8, better
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
- SoundImports4.8 out of 511 ratings · Checked 25 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 |
|---|---|---|---|---|
RumoH Import VAT and duty may apply | £30.48, the lowest price | In stock | Visit shop at RumoH | |
SoundImports Import VAT and duty may apply | £30.52 | 0.1% above the lowest price | 10 in stock | Visit shop at SoundImports |
Audiophonics Import VAT and duty may apply | £35.92 | 18% above the lowest price | In stock | Visit shop at Audiophonics |
Best price over time
Tracked since 1 Apr