GRS4SMP-8
£12.11 · 44% less, betterFs63 Hz −30%, better
Qts0.65 +3%
Vas4 L +123%, worse
BL4.2 T·m −7%
Xmax4 mm −18%, worse
Sensitivity82.8 dB −1.5
4.5-inch LF driver · GBS series · 20 W
Peerless GBS-115N25AL01-04 4Ω
4 Ω
£21.58
SteadyParts Express · 28 in stock · Ships from United States · All 2 offers
- Fs
- 90Hz
- Xmax
- 4.8mm
- SPL
- 84dB
- Pe
- 20W
- BL
- 4.5T·m
- Vd
- 28cm³
- Qts
- 0.63
- Vas
- 2L
Peerless GBS-115N25AL01-04 is a 4.5-inch 4 ohm LF driver rated at 20 W RMS. The validated T/S data includes Fs 90 Hz, Qts 0.63, Vas 1.8 L, Xmax 4.8 mm, sensitivity 84.3 dB, plus 28 cm³ Vd and 117 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 £21.58.
The published T/S values agree with each other
Thiele/Small
- Fs
- 90Hz
- Qts
- 0.63
- Qes
- 0.77
- Qms
- 3.5
- Vas
- 1.8L
- Re
- 3.3Ω
- Le
- 0.34mH
Motor and cone
- BL
- 4.5T·m
- Sd
- 58cm²
- Mms
- 8g
- Xmax
- 4.8mm
- Vd †
- 28cm³
Power and response
- Sensitivity †
- 84.3dB
- Manufacturer sensitivity
- 82.2dB
- Power
- 20W
- Impedance
- 4Ω
- EBP †
- 117 · Leans vented
Size and mounting
- Weight
- 0.2kg
Other published values
- Cms
- 0.37mm/N
Sensitivity shows 84.3 dB, calculated from the T/S values. Peerless publishes 82.2 dB, 2.1 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Peerless lists
LF · Primary · 4.488188976377953″
- BL
- 4.5T·m
- Fs
- 90Hz
- Le
- 0.34mH
- Re
- 3.3Ω
- Sd
- 58cm²
- Cms
- 0.37mm/N
- Mms
- 8g
- Qes
- 0.77
- Qms
- 3.5
- Qts
- 0.63
- SPL
- 84.3dB
- Vas
- 1.8L
- Xmax
- 4.8mm
- Power
- 20W
- Impedance
- 4Ω
- Sensitivity
- 82.2dB
- Calculated sensitivity †
- 84.3dB
- Manufacturer sensitivity
- 82.2dB
- Weight
- 0.2kg
02
Compare
Same-size drivers, compared with the GBS-115N25AL01-04. Clear differences are green when better and red when worse.
This driverGBS-115N25AL01-04
Best price
£21.58
Fs
90 Hz
Qts
0.63
Vas
1.8 L
BL
4.5 T·m
Xmax
4.8 mm
Sensitivity
84.3 dB
Power
20 W
PeerlessSDS-P830656
£12.49 · 42% less, betterFs65 Hz −28%, better
Qts0.62 –
Vas6.6 L +268%, worse
BL5.5 T·m +22%, better
Xmax5.5 mm +13%, better
Sensitivity85.8 dB +1.5
PeerlessSDS-100F25CP09-04
£13.06 · 39% less, betterFs80 Hz −11%, better
Qts0.53 −16%, better
Vas2.0 L +10%, worse
BL4.7 T·m +4%
Xmax5.0 mm +4%
Sensitivity84.4 dB –
VisatonFR 10
£13.64 · 37% less, betterFs90 Hz –
Qts0.54 −14%, better
Vas2.3 L +28%, worse
BL4.6 T·m –
Xmax4 mm −18%, worse
Sensitivity85.8 dB +1.5
VisatonSL 87 FE
£15.25 · 29% less, betterFs120 Hz +33%, worse
Qts0.65 +3%
Vas1.5 L −15%, better
BL4.0 T·m −13%, worse
Xmax1.8 mm −64%, worse
Sensitivity87.1 dB +2.8, better
Dayton AudioDMA105-8
£22.40 · 4% moreFs72 Hz −20%, better
Qts0.63 –
Vas4.2 L +137%, worse
BL4.5 T·m –
Xmax2.5 mm −48%, worse
Sensitivity84.8 dB +0.5
PeerlessGBS-135F25AL02-04
£22.72 · 5% more, worseFs64 Hz −29%, better
Qts0.59 −6%
Vas5.3 L +196%, worse
BL4.9 T·m +9%
Xmax5.4 mm +11%, better
Sensitivity85.1 dB +0.8
PeerlessHDS-P830992
£24.42 · 13% more, worseFs120 Hz +33%, worse
Qts0.66 +5%
Vas1.4 L −22%, better
BL4.8 T·m +7%
Xmax5.0 mm –
Sensitivity86.1 dB +1.8
CIAREPA087
£24.56 · 14% more, worseFs74 Hz −18%, better
Qts0.62 –
Vas2.2 L +23%, worse
BL3.5 T·m −24%, worse
Xmax2 mm −59%, worse
Sensitivity83 dB −1.3
Dayton AudioND90-4
£25.32 · 17% more, worseFs90 Hz –
Qts0.63 –
Vas1.1 L −41%, better
BL3.5 T·m −23%, worse
Xmax4 mm −18%, worse
Sensitivity82.4 dB −1.9
Dayton AudioND90-8
£26.17 · 21% more, worseFs71 Hz −21%, better
Qts0.65 +3%
Vas1.8 L –
BL4.3 T·m −5%
Xmax4 mm −18%, worse
Sensitivity81.2 dB −3.1, worse
Sica4 L 1 SL
£26.17 · 21% more, worseFs108 Hz +20%, worse
Qts0.63 –
Vas1.2 L −33%, better
BL5.1 T·m +13%, better
Xmax2.4 mm −51%, worse
Sensitivity84.9 dB +0.6
Dayton AudioRS100-8
£30.27 · 40% more, worseFs92 Hz –
Qts0.58 −8%
Vas1.4 L −20%, better
BL4.2 T·m −7%
Xmax3.5 mm −28%, worse
Sensitivity83.7 dB −0.6
Dayton AudioRS100P-8
£30.27 · 40% more, worseFs96 Hz +6%
Qts0.54 −14%, better
Vas1.8 L –
BL4.0 T·m −13%, worse
Xmax3.7 mm −24%, worse
Sensitivity85.5 dB +1.2
Dayton AudioND105-4
£30.83 · 43% more, worseFs79 Hz −13%, better
Qts0.61 −3%
Vas2.0 L +10%, worse
BL4.5 T·m –
Xmax4 mm −18%, worse
Sensitivity83.7 dB −0.6
CIAREPA100
£31.34 · 45% more, worseFs100 Hz +11%, worse
Qts0.59 −6%
Vas2.5 L +40%, worse
BL4.4 T·m −3%
Xmax2.5 mm −48%, worse
Sensitivity87.6 dB +3.3, better
Dayton AudioND140-4
£32.52 · 51% more, worseFs59 Hz −34%, better
Qts0.63 –
Vas7.2 L +303%, worse
BL3.9 T·m −14%, worse
Xmax4 mm −18%, worse
Sensitivity85.2 dB +0.9
WavecorWF095WA02
£41.64 · 93% more, worseFs86 Hz −4%
Qts0.62 –
Vas1.6 L −11%, better
BL3.6 T·m −21%, worse
Xmax2.7 mm −44%, worse
Sensitivity83.7 dB −0.6
CelestionAN3510
£42.34 · 96% more, worseFs113 Hz +26%, worse
Qts0.65 –
Vas1.9 L +4%
BL4.6 T·m –
Xmax2.3 mm −54%, worse
Sensitivity87.7 dB +3.4, better
EminenceALPHA 4-4
£42.77 · 98% more, worseFs120 Hz +33%, worse
Qts0.63 –
Vas1.8 L –
BL4.1 T·m −9%
Xmax2.6 mm −46%, worse
Sensitivity88.4 dB +4.1, better
CelestionTFX0412
£69.00 · 220% more, worseFs95 Hz +6%
Qts0.59 −7%
Vas2.2 L +22%, worse
BL5.4 T·m +19%, better
Xmax4 mm −18%, worse
Sensitivity86.5 dB +2.2, better
VisatonB 80
£73.22 · 239% more, worseFs110 Hz +22%, worse
Qts0.63 –
Vas1.8 L –
BL4.2 T·m −8%
Xmax2.2 mm −55%, worse
Sensitivity87.4 dB +3.1, better
B&C4CXN36
£106.44 · 393% more, worseFs113 Hz +26%, worse
Qts0.83 +32%, worse
Vas1.5 L −16%, better
BL5.1 T·m +13%, better
Xmax5 mm +3%
Sensitivity85.8 dB +1.5
FaitalPRO5HX220
£186.29 · 763% more, worseFs135 Hz +50%, worse
Qts0.59 −6%
Vas2.2 L +23%, worse
BL7.7 T·m +70%, better
Xmax4.6 mm −6%
Sensitivity91.4 dB +7.1, better
PeerlessSDS-100F25CP18-04
No current priceFs84 Hz −7%
Qts0.59 −6%
Vas1.9 L +4%
BL4.5 T·m –
Xmax5.0 mm +4%
Sensitivity84.3 dB –
PeerlessHDS-P830870
No current priceFs100 Hz +11%, worse
Qts0.60 −5%
Vas1.7 L −3%
BL4.9 T·m +9%
Xmax5 mm +3%
Sensitivity85 dB +0.7
Dayton AudioDMA90-8
No current priceFs94 Hz +5%
Qts0.57 −10%
Vas1.7 L −5%
BL4.7 T·m +4%
Xmax2.5 mm −48%, worse
Sensitivity84.9 dB +0.6
VisatonFR 10 - 8 Ohm
No current priceFs90 Hz –
Qts0.67 +6%
Vas2.3 L +28%, worse
BL4.6 T·m –
Xmax4 mm −18%, worse
Sensitivity84.5 dB –
REDCATT35FR-2
No current priceFs128 Hz +42%, worse
Qts0.63 –
Vas1.1 L −36%, better
BL4.8 T·m +6%
Xmax2.4 mm −52%, worse
Sensitivity87.5 dB +3.2, better
PeerlessTC10FG00-04
No current priceFs160 Hz +78%, worse
Qts0.65 +3%
Vas1.7 L −5%
BL3.4 T·m −26%, worse
Xmax2.7 mm −44%, worse
Sensitivity90.9 dB +6.6, 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 Express5.0 out of 54 ratings · Checked 9 Oct 2026Read reviews on Parts Express
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 | £21.58, the lowest price | 28 in stock | Visit shop at Parts Express | |
SoundImports Import VAT and duty may apply | £33.84 | 57% above the lowest price | 99 in stock | Visit shop at SoundImports |
Best price over time
Tracked since 1 Apr