Eighteen Sound design
Manifolded 2x18" band-pass IPAL™ powered subwoofer
- Drivers
- 2 × 18ID
18-inch LF driver · 1,800 W
Eighteen Sound 18ID 2Ω
2 Ω · 30–2500 Hz
No current price
- Fs
- 40Hz
- Xmax
- 15.5mm
- SPL
- 94dB
- Pe
- 1800W
- BL
- 24T·m
- Vd
- 1899cm³
- Qts
- 0.26
- Vas
- 67L
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 2 traces
These plotted lines are Bits digitizations of manufacturer evidence, not new measurements. How provenance works
- Trace datasheet-response-trace-poc/v1
frequency response
Frequency response
116 plotted pointsMedium confidence627 selected pixels of 1,176 - Trace datasheet-response-trace-poc/v1
impedance
Impedance response
240 plotted pointsMedium confidence1,021 selected pixels of 1,333
Published graphs
Eighteen Sound 18ID is an 18-inch 2 ohm LF driver rated at 1800 W RMS. The validated T/S data includes Fs 40 Hz, Qts 0.26, Vas 67 L, Xmax 15.5 mm, sensitivity 94 dB, plus 1899 cm³ Vd and 148 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
- 40Hz
- Qts
- 0.26
- Qes
- 0.27
- Qms
- 5.5
- Vas
- 67L
- Re
- 1.5Ω
- Le
- 1.22mH
Motor and cone
- BL
- 24T·m
- Sd
- 1225cm²
- Mms
- 420g
- Xmax
- 15.5mm
- Vd †
- 1899cm³
Power and response
- Sensitivity †
- 94dB
- Manufacturer sensitivity
- 95dB
- Power
- 1800W
- Nominal power
- 1800W
- Impedance
- 2Ω
- Range
- 30–2500Hz
- EBP †
- 148 · Leans vented
Size and mounting
- Diameter
- 462mm
- Cutout
- 416mm
- Bolt circle
- 440mm
- Depth
- 236mm
- Weight
- 12.5kg
Other published values
- Power Program
- 3600
Sensitivity shows 94.0 dB, calculated from the T/S values. Eighteen Sound publishes 95.0 dB, 1.0 dB apart.
† Calculated by bits from the published values
What this validation status means
Everything else Eighteen Sound lists
LF · Primary · 18″
- BL
- 24T·m
- Fs
- 40Hz
- Le
- 1.22mH
- Re
- 1.5Ω
- Sd
- 1225cm²
- Mms
- 420g
- Qes
- 0.27
- Qms
- 5.5
- Qts
- 0.26
- SPL
- 94dB
- Vas
- 67L
- Xmax
- 15.5mm
- Power
- 1800W
- Impedance
- 2Ω
- Sensitivity
- 95dB
- Low limit
- 30Hz
- Nominal power
- 1800W
- Power Program
- 3600
- Calculated sensitivity †
- 94dB
- High limit
- 2500Hz
- Manufacturer sensitivity
- 95dB
- Weight
- 12.5kg
- Diameter
- 462mm
- Depth
- 236mm
- Cutout
- 416mm
- Bolt circle
- 440mm
02
Designs
Cabinets for the 18ID: a design and a suggested box from Eighteen Sound.
All 18ID designsHow we find designsEighteen Sound’s design
From the maker, with plans to download
Eighteen Sound’s suggested box
From Eighteen Sound’s 18ID page
- Net volume
- 200L
- Tuning
- 40Hz
Eighteen Sound gives the volume and tuning; the port is sized for the driver when you open it.
Modelling the box in 00 Simulator…
03
Compare
Same-size drivers, compared with the 18ID. Clear differences are green when better and red when worse.
This driver18ID
Best price
–
Fs
40 Hz
Qts
0.26
Vas
67 L
BL
24 T·m
Xmax
15.5 mm
Sensitivity
94 dB
Power
1800 W
B&C18PS76
£163.07Fs39 Hz –
Qts0.27 +4%
Vas207 L +209%, worse
BL25.8 T·m +8%
Xmax7 mm −55%, worse
Sensitivity98.3 dB +4.3, better
FaitalPRO18FH510
£216.88Fs30 Hz −25%, better
Qts0.26 –
Vas391.4 L +484%, worse
BL18.3 T·m −24%, worse
Xmax9.4 mm −39%, worse
Sensitivity98 dB +4, better
B&C18NW100
£234.88Fs30 Hz −25%, better
Qts0.27 +4%
Vas203.5 L +204%, worse
BL24.7 T·m –
Xmax9 mm −42%, worse
Sensitivity95 dB +1
B&C18PZB100
£238.00Fs38 Hz −5%
Qts0.28 +8%
Vas164 L +145%, worse
BL25 T·m +4%
Xmax8 mm −48%, worse
Sensitivity96.9 dB +2.9, better
RCFL18P400
£289.00Fs29 Hz −28%, better
Qts0.28 +8%
Vas340 L +407%, worse
BL24.6 T·m –
Xmax9 mm −42%, worse
Sensitivity96.6 dB +2.6, better
CIARENDH18-4S
£291.62Fs31 Hz −23%, better
Qts0.25 −4%
Vas240 L +258%, worse
BL22.2 T·m −8%
Xmax11.5 mm −26%, worse
Sensitivity96.6 dB +2.6, better
Eighteen Sound18LW2600
£297.25Fs30 Hz −25%, better
Qts0.28 +8%
Vas186 L +178%, worse
BL23.4 T·m –
Xmax14 mm −10%
Sensitivity94.4 dB –
Eighteen Sound18NLW9400
£305.62Fs33 Hz −18%, better
Qts0.26 –
Vas268 L +300%, worse
BL26 T·m +8%
Xmax9.5 mm −39%, worse
Sensitivity97.4 dB +3.4, better
REDCATT18NPW
£347.48Fs36 Hz −10%, better
Qts0.28 +7%
Vas211.5 L +216%, worse
BL27.3 T·m +14%, better
Xmax4.8 mm −69%, worse
Sensitivity97.5 dB +3.5, better
RCFLF18N401
£359.21Fs32 Hz −20%, better
Qts0.26 –
Vas257 L +284%, worse
BL27.8 T·m +16%, better
Xmax9 mm −42%, worse
Sensitivity97 dB +3, better
RCFLF18X451
£360.00Fs30 Hz −25%, better
Qts0.28 +8%
Vas220 L +228%, worse
BL30.5 T·m +27%, better
Xmax14 mm −10%
Sensitivity95.1 dB +1.1
Eighteen Sound18NLW4100
£371.77Fs29 Hz −28%, better
Qts0.27 +4%
Vas207 L +209%, worse
BL22.8 T·m −5%
Xmax15 mm −3%
Sensitivity94.6 dB +0.6
Oberton18XB1600V2
£388.58Fs33 Hz −19%, better
Qts0.28 +7%
Vas267 L +299%, worse
BL29.6 T·m +23%, better
Xmax12.5 mm −19%, worse
Sensitivity97.1 dB +3.1, better
RCFLN19S400
£416.98Fs32 Hz −20%, better
Qts0.26 –
Vas204 L +204%, worse
BL32 T·m +33%, better
Xmax17 mm +10%
Sensitivity96 dB +2, better
FaitalPRO18XL2000
£420.00Fs28 Hz −30%, better
Qts0.27 +4%
Vas232.1 L +246%, worse
BL30.8 T·m +28%, better
Xmax16.3 mm +5%
Sensitivity94.6 dB +0.6
B&C18SW115
£426.19Fs34 Hz −15%, better
Qts0.30 +15%, worse
Vas149.1 L +123%, worse
BL26 T·m +8%
Xmax14 mm −10%
Sensitivity94.8 dB +0.8
B&C18DS100
£456.91Fs32 Hz −20%, better
Qts0.24 −8%
Vas157 L +134%, worse
BL24.3 T·m –
Xmax14 mm −10%
Sensitivity95.3 dB +1.3
Eighteen Sound18NLW4500
£468.89Fs37 Hz −8%
Qts0.31 +19%, worse
Vas127 L +90%, worse
BL26.7 T·m +11%, better
Xmax14.8 mm −5%
Sensitivity95.1 dB +1.1
FaitalPRO18XL1700
£469.00Fs28 Hz −30%, better
Qts0.28 +8%
Vas227 L +239%, worse
BL30.5 T·m +27%, better
Xmax16.2 mm +4%
Sensitivity94.4 dB –
Eighteen Sound18NLW9601
£543.41Fs38 Hz −5%
Qts0.28 +8%
Vas111 L +66%, worse
BL25 T·m +4%
Xmax14 mm −10%
Sensitivity95.3 dB +1.3
REDCATT181XR
£544.21Fs30 Hz −25%, better
Qts0.23 −12%, better
Vas195 L +191%, worse
BL28.3 T·m +18%, better
Xmax17 mm +10%
Sensitivity95.4 dB +1.4
Eighteen Sound18NTLW5000
£550.00Fs32 Hz −20%, better
Qts0.30 +15%, worse
Vas165 L +146%, worse
BL25 T·m +4%
Xmax17.5 mm +13%, better
Sensitivity94.4 dB –
Oberton18NSW700
No current priceFs30 Hz −24%, better
Qts0.24 −7%
Vas309.0 L +361%, worse
BL26.6 T·m +11%, better
Xmax14 mm −10%
Sensitivity97.5 dB +3.5, better
Eighteen Sound18LW1251
No current priceFs35 Hz −13%, better
Qts0.27 +4%
Vas268 L +300%, worse
BL23.6 T·m –
Xmax9 mm −42%, worse
Sensitivity98.2 dB +4.2, better
Oberton18B500
No current priceFs35 Hz −13%, better
Qts0.28 +6%
Vas243.9 L +264%, worse
BL24.1 T·m –
Xmax8.8 mm −44%, worse
Sensitivity97.7 dB +3.7, better
Oberton18FBR700
No current priceFs36 Hz −11%, better
Qts0.27 +4%
Vas231.3 L +245%, worse
BL25.2 T·m +5%
Xmax8 mm −48%, worse
Sensitivity97.8 dB +3.8, better
Eighteen Sound18W2000
No current priceFs37 Hz −8%
Qts0.25 −4%
Vas230 L +243%, worse
BL27.1 T·m +13%, better
Xmax–
Sensitivity98.5 dB +4.5, better
Eighteen Sound18W2001
No current priceFs37 Hz −8%
Qts0.25 −4%
Vas230 L +243%, worse
BL27.1 T·m +13%, better
Xmax7 mm −55%, worse
Sensitivity98.5 dB +4.5, better
Precision DevicesPD.185NR1
No current priceFs34 Hz −15%, better
Qts0.27 +4%
Vas102 L +52%, worse
BL29.5 T·m +23%, better
Xmax11.8 mm −24%, worse
Sensitivity93.4 dB −0.6
Eighteen Sound18NLW9000
No current priceFs32 Hz −20%, better
Qts0.21 −19%, better
Vas247 L +269%, worse
BL25 T·m +4%
Xmax14 mm −10%
Sensitivity97.7 dB +3.7, better
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.