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BEYMA 18LEX1600Nd

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BEYMA 18LEX1600Nd — 18" / 18 inch · Woofer · Subwoofer / Bass · Neodymium Magnet
1600 W AES - 96 dB - 35 – 1000 Hz - 8 Ω
Part no.: 42A-CHS-TT-BEY-0003

613.00 € 613.0 EUR 613.00 €

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BEYMA 18LEX1600Nd — 18" · Woofer · Neodymium-Magnet

1600 W AES · 96 dB Sensitivity · Frequency range 35 Hz – 1000 Hz

Technical data

  • Diameter: 18 "
  • Voice coil: 4 "
  • Power handling: 1600 W AES
  • Sensitivity: 96 dB
  • Impedance: 8 Ω
  • Magnet: Neodymium
  • Weight: 9.9 kg
  • Mounting depth: 234 mm
  • Frequency range: 35 – 1000 Hz

Series: LEX · Part no.: 42A-CHS-TT-BEY-0003

Beyma 18LEX1600Nd: 18" woofer with 14.5 mm Xmax, neodymium and 1600 W AES for low tunings

The Beyma 18LEX1600Nd is the excursion driver of the LEX series: 14.5 mm Xmax and 1,820 cm³ of displacement volume are very high figures for an 18" woofer. The neodymium motor with 4" voice coil weighs 9.9 kg, power handling is 1600 W AES, sensitivity 96 dB at 8 Ω. The range runs from 35 to 1000 Hz.

The 96 dB are a deliberate trade: more excursion and a softer suspension with Qts 0.43, Vas 231 l and fs 33 Hz in exchange for some efficiency. BL 24.5 Tm drives 229 g of moving mass, the Qms of 11.4 indicates low mechanical losses. Re 5.8 Ω and Le 1.9 mH belong to the 4" coil. The result is a driver that can be tuned very low in large vented enclosures – for cinema subs and music with genuine deep bass.

Use and enclosure

With EBP 73 both enclosure types are possible. The vented guideline is 307 l tuned to 30 Hz with an f3 around 28 Hz – a very low figure for a driver without equalisation, though it needs a large cabinet. Sealed, 136 l with fc at 54 Hz results; thanks to the high excursion this variant can be extended downwards well with DSP equalisation. Mounting depth is 234 mm.

Compared with the 18LEX1000Nd with Vas 260 l, Qts 0.39 and fs 34 Hz, the 18LEX1600Nd ends up with a similar volume requirement but has more excursion and power handling. The 18 Sound 18TLW3000 with fs 33 Hz, Qts 0.41 and Vas 185 l gets by with a smaller box. A high-pass below tuning remains mandatory at 1600 W; how low you get with a smaller volume is shown by the enclosure calculator at 42.audio.

What to look out for

  • 8 Ω, Re 5.8 Ω: a standard load; at 1600 W AES choose an amplifier with a clean limiter.
  • 9.9 kg with neodymium: light for 1600 W AES and a 4" voice coil.
  • Mounting depth 234 mm: set the cabinet depth around it.
  • Xmax 14.5 mm, Vd 1,820 cm³: lots of excursion, set a high-pass below the 30 Hz tuning.
  • 96 dB sensitivity: excursion instead of efficiency, plan power headroom.

Frequently asked questions

18LEX1600Nd or 18LEX1000Nd?

Both are neodymium 18" drivers with similar volume needs: Vas 231 l versus 260 l, fs 33 versus 34 Hz. The 18LEX1600Nd offers 14.5 mm Xmax and 1600 W AES at 96 dB, the 18LEX1000Nd with Qts 0.39 is tuned tighter. If maximum deep-bass output is the goal, take the 1600; 42.audio carries both in the shop.

How does it differ from the 18 Sound 18TLW3000?

The 18TLW3000 has fs 33 Hz and Qts 0.41 but a stiffer suspension with Vas 185 l and therefore a smaller box. The 18LEX1600Nd with Vas 231 l needs more volume and, with an f3 around 28 Hz in the guideline enclosure, goes correspondingly deeper. You will find both in the shop.

Can I run the 18LEX1600Nd sealed with DSP?

Yes. The guideline is 136 l with fc at 54 Hz. With 14.5 mm Xmax the driver has enough reserve to boost the region below fc by equalisation. Watch the power this requires and set a high-pass once excursion is used up.

Beyma 18LEX1600Nd: manufacturer, spellings and classification

Beyma and Acustica Beyma refer to the same manufacturer: Acústica Beyma S.L. of Moncada near Valencia, Spain. The 18LEX1600Nd is a 18-inch woofer with neodymium magnet from the LEX series, available from 42.audio, Beyma dealer in Germany, with datasheet and full specifications in the driver database.

At 42.audio you get the BEYMA 18LEX1600Nd with all key data in the driver database and the enclosure calculator. More drivers from this manufacturer: Atlas Beyma.

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs33 Hz
Total Q Qts0.43
Electrical Q Qes0.45
Mechanical Q Qms11.4
Equivalent volume Vas231.0 l
Moving mass Mms229.0 g
Cone area Sd1,255 cm²
Linear excursion Xmax14.5 mm
Displaced volume Vd1,820 cm³
Force factor BL24.5 Tm
DC resistance Re5.8 Ω
Voice coil inductance Le1.9 mH

Enclosure suggestion

The EBP of 73 is in the intermediate range — either works; sealed plays tighter, bass reflex deeper and louder. EBP = fs / Qes = 33 / 0.45

Sealed (Qtc 0.707)

Enclosure volume Vb
135.6 l
System resonance Fc
54 Hz
Cut-off frequency F3
54 Hz

Bass reflex (QB3 after Small)

Enclosure volume Vb
285.2 l
Tuning frequency Fb
31 Hz
Cut-off frequency F3
30 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 BEYMA
Category Low Frequency
Series LEX
Magnet Neodymium
Impedance (Ω) 8
Power handling (W) 1600
Sensitivity (dB) 96
Frequency from (Hz) 35
Frequency to (Hz) 1000
Abmessungen & Korb
Diameter 18
Voice coil (inch) 4
Mounting depth (mm) 234
Weight (kg) 9.9
Thiele-Small-Parameter
Re (Ω) 5.8
Le (mH) 1.9
Fs (Hz) 33
Qms 11.4
Qes 0.45
Qts 0.43
Vas (l) 231
Xmax (mm) 14.5
Vd (cm³) 1820
BL (Tm) 24.5
Mms (kg) 0.229
Sd (m²) 0.1255