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18SOUND 15LW1410

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18SOUND (Eighteen Sound) 15LW1410 — 15" / 15 inch · Woofer · Subwoofer / Bass · Ferrite Magnet
4" voice coil · 8 Ω
Part no.: 42A-CHS-TT-18S-0016

344.00 € 344.0 EUR 344.00 €

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  • Impedance (Ω)
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  • Frequency to (Hz)
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18SOUND 15LW1410 — 15" · Woofer

1000 W AES · 98.5 dB Sensitivity · Frequency range 40 Hz – 2400 Hz

Technical data

  • Diameter: 15 "
  • Voice coil: 4 "
  • Power handling: 1000 W AES
  • Sensitivity: 98.5 dB
  • Impedance: 8 Ω
  • Magnet: Ferrite
  • Weight: 12.9 kg
  • Mounting depth: 163 mm
  • Frequency range: 40 – 2400 Hz

Datasheet (PDF) · Manufacturer page

Series: LW · Part no.: 42A-CHS-TT-18S-0016

18Sound 15LW1410: 15" ferrite woofer with 1 mH inductance for 2-way tops and subs

Anyone looking for a 15" bass driver for a 2-way PA top will almost inevitably land on the 18Sound 15LW1410. It belongs to the ferrite LW series, carries a 4" voice coil, handles 1,000 W AES and delivers 98.5 dB sensitivity. The decisive difference to its sibling, the 15LW1401, sits in the motor: voice coil inductance is just 1 mH, which keeps the response far more even up to the 2,400 Hz upper limit.

The Thiele-Small parameters are typical of a tightly driven PA woofer: Fs 42 Hz, Qts 0.27, Vas 131 l, a force factor of 24.1 Tm and a moving mass of 138 g. Excursion is 8.5 mm Xmax, enough for bass tops and mid-sized subs but not optimised for extreme displacement. An EBP of 150 points clearly towards vented or horn-loaded enclosures.

Use and enclosure

For a vented box the approximation suggests around 46 l tuned to 57 Hz with a lower cut-off of about 68 Hz. That is exactly the range in which a compact 15"/1.4" top works in rental or on club stages, with subwoofers underneath. A sealed version of roughly 22 l with a system resonance near 110 Hz is only worth considering as a kick-bass section. For fine-tuning, different volumes or lower tuning frequencies, use the enclosure calculator at 42.audio.

The low inductance of 1 mH is why the 15LW1410 also behaves well with a passive crossover: the impedance rise above the bass region is flatter, and a clean hand-over to the compression driver is easier to achieve. Still, place the crossover well below 2,400 Hz so that the beaming of the 15" cone does not become excessive. Allow for the 163 mm mounting depth and 12.9 kg weight when building the cabinet.

What to look out for

  • Only 1 mH voice coil inductance: well behaved even with a passive crossover.
  • 98.5 dB sensitivity: high efficiency, less amplifier power for the same level.
  • Xmax 8.5 mm: built for bass tops and limited subs, not for extreme excursion.
  • Re 5 Ω at 8 Ω nominal, alternatively available as a 4 Ω version.
  • 163 mm mounting depth, 12.9 kg: ferrite motor, so design cabinet and handles accordingly.

Frequently asked questions

Is the 15LW1410 the successor to the 15LW1401?

The enclosure parameters are identical: Fs 42 Hz, Qts 0.27, Vas 131 l, both with a 4" voice coil and 1,000 W AES. The 15LW1410 uses a much lower inductance of 1 mH and offers slightly higher sensitivity, giving up a little Xmax at 8.5 mm. For 2-way tops it is the more suitable choice.

Which enclosure for the 15LW1410 as a subwoofer?

The guideline is around 46 l vented, tuned to 57 Hz. If you want to go deeper, a driver with lower resonance and larger Vas is the better starting point, for example from the 18Sound LW or ND series.

How much amplifier power does the 15LW1410 need?

Plan on an amplifier around 1,000 W at 8 Ω with proper limiting. Thanks to 98.5 dB sensitivity the driver reaches high levels with less power too; the real ceiling is the excursion limit of 8.5 mm.

At 42.audio you get the 18SOUND 15LW1410 with datasheet PDF, all key data in the driver database and the enclosure calculator. More drivers from this manufacturer: Atlas 18Sound.

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs42 Hz
Total Q Qts0.27
Electrical Q Qes0.28
Mechanical Q Qms5.36
Equivalent volume Vas131.0 l
Moving mass Mms138.0 g
Cone area Sd850 cm²
Linear excursion Xmax8.5 mm
Force factor BL24.1 Tm
DC resistance Re5 Ω
Voice coil inductance Le1 mH

Enclosure suggestion

The EBP of 150 suggests a bass-reflex enclosure. EBP = fs / Qes = 42 / 0.28

Sealed (Qtc 0.707)

Enclosure volume Vb
22.4 l
System resonance Fc
110 Hz
Cut-off frequency F3
110 Hz

Bass reflex (QB3 after Small)recommended

Enclosure volume Vb
34.8 l
Tuning frequency Fb
63 Hz
Cut-off frequency F3
75 Hz

Vb is the required net internal volume, Fb the tuning frequency of the reflex port and F3 the frequency at which the level has dropped by 3 dB. Calculated approximation after Small. A starting point for simulation, not a finished build plan.

Comparable drivers

Same size, same type, Qts within ±30 %.

Specifications

Allgemein
Manufacturer 18SOUND
Category Low Frequency
Series LW
Magnet Ferrite
Impedance (Ω) 8
Power handling (W) 1000
Sensitivity (dB) 98.5
Frequency from (Hz) 40
Frequency to (Hz) 2400
Abmessungen & Korb
Diameter 15
Voice coil (inch) 4
Mounting depth (mm) 163
Weight (kg) 12.9
Thiele-Small-Parameter
Re (Ω) 5
Le (mH) 1
Fs (Hz) 42
Qms 5.36
Qes 0.28
Qts 0.27
Vas (l) 131
Xmax (mm) 8.5
BL (Tm) 24.1
Mms (kg) 0.138
Sd (m²) 0.085