Dayton AudioPSS555-8
£194.48Fs28 Hz −21%, better
Qts0.33 –
Vas444 L +67%, worse
BL29.7 T·m −5%
Xmax11 mm −21%, worse
Sensitivity96.4 dB −0.7
No product photo
21-inch LF driver · PD series · 139 mm voice coil · 1,500 W
Precision Devices PD.2155-1F 8Ω
8 Ω · 30–300 Hz
No current price
- Fs
- 35Hz
- Xmax
- 14mm
- SPL
- 97dB
- Pe
- 1500W
- BL
- 31.3T·m
- Vd
- 2128cm³
- Qts
- 0.34
- Vas
- 266L
Precision Devices PD.2155-1F is a 21-inch 8 ohm LF driver rated at 1500 W RMS. The validated T/S data includes Fs 35 Hz, Qts 0.34, Vas 266 L, Xmax 14 mm, sensitivity 97.1 dB, plus 2128 cm³ Vd and 99 EBP. bits tracks vendor pricing, datasheet links, simulator import data, and similar drivers from the same loudspeaker database.
The published T/S values agree with each other
Thiele/Small
- Fs
- 35Hz
- Qts
- 0.34
- Qes
- 0.35
- Qms
- 7.9
- Vas
- 266L
- Re
- 5.1Ω
- Le
- 1.48mH
Motor and cone
- BL
- 31.3T·m
- Sd
- 1520cm²
- Mms
- 304g
- Xmax
- 14mm
- Vd †
- 2128cm³
- Voice coil
- 139mm
- Flux density
- 1.20T
Power and response
- Sensitivity †
- 97.1dB
- Manufacturer sensitivity
- 97.5dB
- Power
- 1500W
- Impedance
- 8Ω
- Range
- 30–300Hz
- EBP †
- 99 · Sealed or vented
Size and mounting
- Diameter
- 550mm
- Cutout
- 492mm
- Bolt circle
- 528mm
- Depth
- 205.5mm
- Weight
- 27.3kg
Other published values
- Cms
- 0.066mm/N
- Power Peak
- 6000
† Calculated by bits from the published values
What this validation status means
Everything else Precision Devices lists
LF · Primary · 21″
- BL
- 31.3T·m
- Fs
- 35Hz
- Le
- 1.48mH
- Re
- 5.1Ω
- Sd
- 1520cm²
- Cms
- 0.066mm/N
- Mms
- 304g
- Qes
- 0.35
- Qms
- 7.9
- Qts
- 0.34
- SPL
- 97.1dB
- Vas
- 266L
- Xmax
- 14mm
- Power
- 1500W
- Impedance
- 8Ω
- Power Peak
- 6000
- Flux density
- 1.20T
- Sensitivity
- 97.5dB
- Low limit
- 30Hz
- Calculated sensitivity †
- 97.1dB
- High limit
- 300Hz
- Manufacturer sensitivity
- 97.5dB
- Voice coil
- 139mm
- Weight
- 27.3kg
- Diameter
- 550mm
- Depth
- 205.5mm
- Cutout
- 492mm
- Bolt circle
- 528mm
02
Compare
Same-size drivers, compared with the PD.2155-1F. Clear differences are green when better and red when worse.
No photo
This driverPD.2155-1F
Best price
–
Fs
35 Hz
Qts
0.34
Vas
266 L
BL
31.3 T·m
Xmax
14 mm
Sensitivity
97.1 dB
Power
1500 W
SB AudienceNERO-21SW1100D
£343.60Fs32 Hz −9%
Qts0.34 –
Vas312.6 L +18%, worse
BL30 T·m −4%
Xmax12.2 mm −13%, worse
Sensitivity96.7 dB –
Eighteen Sound21LW2600
£425.60Fs27 Hz −23%, better
Qts0.33 –
Vas333 L +25%, worse
BL32.5 T·m +4%
Xmax14.6 mm +4%
Sensitivity94.9 dB −2.2, worse
CelestionTSQ2145
£445.00Fs30 Hz −14%, better
Qts0.34 –
Vas253.8 L −5%
BL33.8 T·m +8%
Xmax15 mm +7%
Sensitivity94.8 dB −2.3, worse
RCFLF21X451
£448.61Fs28 Hz −20%, better
Qts0.37 +9%
Vas385 L +45%, worse
BL30.5 T·m –
Xmax14 mm –
Sensitivity95.4 dB −1.7
Eighteen Sound21NLW4100
£456.79Fs36 Hz –
Qts0.46 +36%, worse
Vas210 L −21%, better
BL29.4 T·m −6%
Xmax15.2 mm +9%
Sensitivity95 dB −2.1, worse
B&C21SW115
£458.85Fs30 Hz −14%, better
Qts0.37 +9%
Vas318 L +20%, worse
BL30.1 T·m −4%
Xmax14 mm –
Sensitivity95.5 dB −1.6
Beyma21LEX1600ND
£475.00Fs30 Hz −14%, better
Qts0.29 −14%, better
Vas305 L +15%, worse
BL36.6 T·m +17%, better
Xmax14 mm –
Sensitivity96.4 dB −0.7
RCFLF21N451
£475.00Fs30 Hz −14%, better
Qts0.26 −23%, better
Vas375 L +41%, worse
BL34.5 T·m +10%, better
Xmax13 mm −7%
Sensitivity97.8 dB +0.7
B&C21DS115
£475.59Fs34 Hz –
Qts0.27 −20%, better
Vas204 L −23%, better
BL39.3 T·m +26%, better
Xmax16.5 mm +18%, better
Sensitivity96.6 dB −0.5
Beyma21QLEX1600FE
£493.97Fs30 Hz −14%, better
Qts0.28 −17%, better
Vas309 L +16%, worse
BL36.4 T·m +16%, better
Xmax13 mm −7%
Sensitivity96.5 dB −0.6
B&C21SW152
£537.55Fs32 Hz −9%
Qts0.36 +6%
Vas200 L −25%, better
BL39 T·m +25%, better
Xmax15 mm +7%
Sensitivity94.4 dB −2.7, worse
Eighteen Sound21NLW9001
£549.89Fs32 Hz −9%
Qts0.31 −9%
Vas244 L −8%
BL37 T·m +18%, better
Xmax14 mm –
Sensitivity95.7 dB −1.4
No photo
Precision DevicesPD.2155-1N
£555.00Fs33 Hz −6%
Qts0.36 +6%
Vas241 L −9%
BL30 T·m −4%
Xmax14 mm –
Sensitivity95.7 dB −1.4
Eighteen Sound21NTLW5000
£595.00Fs31 Hz −11%, better
Qts0.36 +6%
Vas270 L –
BL32 T·m –
Xmax17.5 mm +25%, better
Sensitivity95.3 dB −1.8
Eighteen Sound21NLW4000
£608.33Fs29 Hz −17%, better
Qts0.37 +9%
Vas305 L +15%, worse
BL30 T·m −4%
Xmax15 mm +7%
Sensitivity94.9 dB −2.2, worse
Eighteen Sound21NLW9601
£623.80Fs37 Hz +6%
Qts0.29 −14%, better
Vas175 L −34%, better
BL43 T·m +37%, better
Xmax14 mm –
Sensitivity96.6 dB −0.5
No photo
Precision DevicesPD.2160-1N
£799.00Fs35 Hz –
Qts0.30 −12%, better
Vas177 L −33%, better
BL43 T·m +37%, better
Xmax16 mm +14%, better
Sensitivity95.9 dB −1.2
EminenceNSW6021-124
£916.36Fs31 Hz −12%, better
Qts0.32 −6%
Vas224.6 L −16%, better
BL30.5 T·m –
Xmax21 mm +50%, better
Sensitivity95 dB −2.1, worse
No current price
Fs35 Hz –
Qts0.34 –
Vas266 L –
BL31.3 T·m –
Xmax14 mm –
Sensitivity97.1 dB –
No current price
Fs33 Hz −6%
Qts0.36 +6%
Vas241 L −9%
BL30 T·m −4%
Xmax14 mm –
Sensitivity95.7 dB −1.4
Eighteen Sound21LW2500
No current priceFs29 Hz −17%, better
Qts0.37 +9%
Vas305 L +15%, worse
BL30 T·m −4%
Xmax14 mm –
Sensitivity94.9 dB −2.2, worse
Eighteen Sound21NLW5300
No current priceFs31 Hz −11%, better
Qts0.32 −6%
Vas325 L +22%, worse
BL31 T·m –
Xmax15.3 mm +9%
Sensitivity96.6 dB −0.5
CelestionNTR21-5010JD
No current priceFs32 Hz −8%
Qts0.32 −6%
Vas276.7 L +4%
BL33.9 T·m +8%
Xmax9 mm −36%, worse
Sensitivity96.4 dB −0.7
Eighteen Sound21NLW9601C
No current priceFs38 Hz +9%
Qts0.29 −14%, better
Vas140 L −47%, better
BL33.2 T·m +6%
Xmax14 mm –
Sensitivity96 dB −1.1
B&C21SW150
No current priceFs29 Hz −17%, better
Qts0.26 −23%, better
Vas254 L −5%
BL32.6 T·m +4%
Xmax15 mm +7%
Sensitivity95.6 dB −1.5
P.AudioSD21-125XB
No current priceFs35 Hz –
Qts0.38 +12%, worse
Vas345.6 L +30%, worse
BL30.4 T·m –
Xmax11.3 mm −20%, worse
Sensitivity97.7 dB +0.6
Sica21 S 4 PL
No current priceFs35 Hz –
Qts0.30 −12%, better
Vas255 L −4%
BL36.1 T·m +15%, better
Xmax5.2 mm −63%, worse
Sensitivity97.4 dB –
Dayton AudioPSS545HE-4
No current priceFs29 Hz −18%, better
Qts0.27 −20%, better
Vas212.2 L −20%, better
BL35.5 T·m +13%, better
Xmax21 mm +50%, better
Sensitivity94.6 dB −2.5, worse
Eighteen Sound21ID
No current priceFs38 Hz +9%
Qts0.23 −32%, better
Vas143 L −46%, better
BL25.2 T·m −19%, worse
Xmax14 mm –
Sensitivity97.2 dB –
Tune the match
Choose the published values that matter to your design. Size stays matched to this driver.
Qts
Qes
VasL
Xmaxmm
BLTm
No current price found. Pricing may appear after the next vendor refresh.