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18SOUND 18TLW3000

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18SOUND (Eighteen Sound) 18TLW3000 — 18" / 18 inch · Woofer · Subwoofer / Bass · Ferrite · Dual-Gap
2x4" voice coil · 8 Ω
Part no.: 42A-CHS-TT-18S-0004

459.00 € 459.0 EUR 459.00 €

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18SOUND 18TLW3000 — 18" · Woofer

1800 W AES · 95 dB Sensitivity · Frequency range 30 Hz – 2000 Hz

Technical data

  • Diameter: 18 "
  • Voice coil: 4 "
  • Power handling: 1800 W AES
  • Sensitivity: 95 dB
  • Impedance: 8 Ω
  • Magnet: Ferrite
  • Weight: 13.2 kg
  • Mounting depth: 275 mm
  • Frequency range: 30 – 2000 Hz

Datasheet (PDF) · Manufacturer page

Series: TLW · Part no.: 42A-CHS-TT-18S-0004

18Sound 18TLW3000: 18" ferrite woofer with dual-gap motor and 1800 W

The 18TLW3000 is the ferrite member of 18Sound's dual-gap woofer family. Two 4" voice coils work in two air gaps, power handling is 1800 W, sensitivity 95 dB and nominal impedance 8 Ω. At 13.2 kg it is no lightweight, but for a ferrite 18" with this motor that is the usual territory.

What separates the TLW3000 from its neodymium siblings is the parameter set: Qts 0.41 and Qms 13 point to a softer suspension with low mechanical losses and a moderate motor of 24.5 Tm. fs sits at 33 Hz, Vas at 185 l, Xmax at 12 mm. This is neither a short-stroke efficiency machine nor an extreme long-throw driver, but a woofer that reaches down cleanly in large vented boxes.

Use and enclosure

With an EBP of 79 you can build either a vented or a sealed box. The bass reflex guideline is about 215 l tuned to 31 Hz with a lower cut-off around 30 Hz – a big cabinet, but real deep bass without equalisation. Sealed would be roughly 94 l with fc at 57 Hz, usable in installations with DSP boost. Run both variants through the enclosure calculator at 42.audio before ordering timber.

The 275 mm mounting depth is moderate for a ferrite 18". The 30 to 2000 Hz operating range allows use not only as a subwoofer but also as the bass section of a large 2-way cabinet with a horn on top, with the crossover placed well above the lower limit.

What to look out for

  • 8 Ω, Re 4.6 Ω – an easy load, 1800 W handling with dual-gap cooling
  • Qts 0.41 and Vas 185 l: plan a large vented box, guideline 215 l
  • Ferrite magnet, 13.2 kg – a dual-18 cabinet gets heavy
  • Xmax 12 mm, moving mass 0.266 kg
  • Mounting depth 275 mm

Frequently asked questions

How does the 18TLW3000 compare with the Beyma 18LEX1600Nd?

Both sit at fs 33 Hz; the Beyma has Qts 0.43 and 231 l Vas, the 18Sound Qts 0.41 and 185 l. In enclosure terms they are close; the 18TLW3000 uses ferrite rather than neodymium.

Does this driver make sense for a home cinema subwoofer?

Yes, if you have the space: around 215 l vented at 31 Hz is a strong foundation for home cinema. In smaller sealed boxes the DSP equalisation of the subwoofer amplifier helps, with the 12 mm excursion then setting the limit.

How much amplifier power does it need?

For full output an amplifier around 1800 W at 8 Ω; with 95 dB sensitivity it reaches high levels with far less. A high-pass below 30 Hz protects the cone in a vented alignment.

At 42.audio you get the 18SOUND 18TLW3000 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 fs33 Hz
Total Q Qts0.41
Electrical Q Qes0.42
Mechanical Q Qms13
Equivalent volume Vas185.0 l
Moving mass Mms266.0 g
Cone area Sd1,225 cm²
Linear excursion Xmax12 mm
Force factor BL24.5 Tm
DC resistance Re4.6 Ω
Voice coil inductance Le1.8 mH

Enclosure suggestion

The EBP of 79 is in the intermediate range — either works; sealed plays tighter, bass reflex deeper and louder. EBP = fs / Qes = 33 / 0.42

Sealed (Qtc 0.707)

Enclosure volume Vb
93.7 l
System resonance Fc
57 Hz
Cut-off frequency F3
57 Hz

Bass reflex (QB3 after Small)

Enclosure volume Vb
195.2 l
Tuning frequency Fb
32 Hz
Cut-off frequency F3
32 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 TLW
Magnet Ferrite
Impedance (Ω) 8
Power handling (W) 1800
Sensitivity (dB) 95
Frequency from (Hz) 30
Frequency to (Hz) 2000
Abmessungen & Korb
Diameter 18
Voice coil (inch) 4
Mounting depth (mm) 275
Weight (kg) 13.2
Thiele-Small-Parameter
Re (Ω) 4.6
Le (mH) 1.8
Fs (Hz) 33
Qms 13
Qes 0.42
Qts 0.41
Vas (l) 185
Xmax (mm) 12
BL (Tm) 24.5
Mms (kg) 0.266
Sd (m²) 0.1225