BEYMA 18LEX1600Fe
BEYMA 18LEX1600Fe — 18" / 18 inch · Woofer · Subwoofer / Bass · Ferrite Magnet
1600 W AES - 97 dB - 35 – 1000 Hz - 8 Ω
Part no.: 42A-CHS-TT-BEY-0007
Documents
BEYMA 18LEX1600Fe — 18" · Woofer · Ferrite-Magnet
1600 W AES · 97 dB Sensitivity · Frequency range 35 Hz – 1000 Hz
Technical data
- Diameter: 18 "
- Voice coil: 4 "
- Power handling: 1600 W AES
- Sensitivity: 97 dB
- Impedance: 8 Ω
- Magnet: Ferrite
- Weight: 14.9 kg
- Mounting depth: 233 mm
- Frequency range: 35 – 1000 Hz
Series: LEX · Part no.: 42A-CHS-TT-BEY-0007
Beyma 18LEX1600Fe: 18" woofer with 13 mm Xmax, 1600 W AES and a 175 l vented guideline
Vas 188 l at fs 34 Hz and Qts 0.38 – within the LEX series, the Beyma 18LEX1600Fe is the driver that puts a lot of excursion and power handling into a comparatively moderate enclosure volume. The 18" woofer with ferrite motor and 4" voice coil handles 1600 W AES, has 97 dB sensitivity at 8 Ω and works from 35 to 1000 Hz.
13 mm Xmax and 1,631 cm³ of displacement volume make it a subwoofer driver; BL 26.9 Tm moves the 252 g cone assembly with enough force to stay in control even at large excursion. The 14.9 kg are down to the ferrite magnet, which a 4" coil needs as a heat sink at 1600 W. Re 5.3 Ω and Le 1.7 mH are unremarkable for this coil size.
Use and enclosure
EBP 85 allows both enclosure types. The vented guideline is 175 l with tuning and f3 at 34 Hz – a compact volume for an 18" with this extension. Sealed, 76 l with fc at 63 Hz is the starting point, which barely uses the driver's excursion and only makes sense with equalisation. The mounting depth of 233 mm sets the minimum cabinet depth.
The comparison with the 18LEX1200Fe shows the direction: that one has Vas 277 l and needs correspondingly more volume, while the 18LEX1600Fe delivers more excursion in the smaller box – for cinema and club subs where output per litre counts. As a subwoofer, cross it far below the upper limit of 1000 Hz. At 1600 W a high-pass below tuning is mandatory; fine tuning is done in the enclosure calculator at 42.audio.
What to look out for
- 8 Ω, Re 5.3 Ω: a standard load for PA amplifiers rated for 8 Ω.
- 14.9 kg ferrite motor: size cabinet and handles accordingly.
- Mounting depth 233 mm with a 4" voice coil.
- Xmax 13 mm, Vd 1,631 cm³: high excursion, still set a high-pass below 34 Hz.
- Vas 188 l: vented guideline 175 l, more compact than the 18LEX1200Fe with Vas 277 l.
Frequently asked questions
18LEX1600Fe or 18LEX1000Fe?
Both have fs 34 Hz and Qts 0.38. The 18LEX1600Fe brings 13 mm Xmax, 1600 W AES and needs less volume with Vas 188 l; the 18LEX1000Fe with Vas 250 l is the variant for applications that do not need the full power handling. You will find both in the 42.audio shop.
How does it compare with the 18 Sound 18LW2420?
With fs 34 Hz, Qts 0.36 and Vas 196 l, the 18LW2420 is almost level in enclosure design. The 18LEX1600Fe relies on a 4" voice coil, 1600 W AES and 13 mm Xmax. Where the parameters differ in detail is shown by the comparison in the driver database.
How much amplifier power does the 18LEX1600Fe need?
1600 W AES into 8 Ω is the continuous rating. With 97 dB sensitivity you reach high levels with less power as well; what matters is a limiter with a high-pass below the tuning frequency so the 13 mm Xmax is not exceeded.
Beyma 18LEX1600Fe: manufacturer, spellings and classification
Beyma and Acustica Beyma refer to the same manufacturer: Acústica Beyma S.L. of Moncada near Valencia, Spain. The 18LEX1600Fe is a 18-inch woofer with ferrite 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 18LEX1600Fe with all key data in the driver database and the enclosure calculator. More drivers from this manufacturer: Atlas Beyma.
Thiele-Small parameters
| Nominal impedance | 8 Ω |
|---|---|
| Resonance frequency fs | 34 Hz |
| Total Q Qts | 0.38 |
| Electrical Q Qes | 0.4 |
| Mechanical Q Qms | 7.4 |
| Equivalent volume Vas | 188.0 l |
| Moving mass Mms | 252.0 g |
| Cone area Sd | 1,255 cm² |
| Linear excursion Xmax | 13 mm |
| Displaced volume Vd | 1,631 cm³ |
| Force factor BL | 26.9 Tm |
| DC resistance Re | 5.3 Ω |
| Voice coil inductance Le | 1.7 mH |
Enclosure suggestion
The EBP of 85 is in the intermediate range — either works; sealed plays tighter, bass reflex deeper and louder. EBP = fs / Qes = 34 / 0.4
Sealed (Qtc 0.707)
- Enclosure volume Vb
- 76.4 l
- System resonance Fc
- 63 Hz
- Cut-off frequency F3
- 63 Hz
Bass reflex (QB3 after Small)
- Enclosure volume Vb
- 154.3 l
- Tuning frequency Fb
- 36 Hz
- Cut-off frequency F3
- 37 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 %.
- Beyma 18LEX1000Fefs 34 Hz · Qts 0.38 · Vas 250 l · in the shop
- Beyma 18LEX1200Fefs 32 Hz · Qts 0.38 · Vas 277 l · in the shop
- FaitalPRO 18HW1070fs 32 Hz · Qts 0.38 · Vas 195.9 l · in the database
- Beyma 18LEX1000Ndfs 34 Hz · Qts 0.39 · Vas 260 l · in the shop
- FaitalPRO 18HP1060fs 35 Hz · Qts 0.37 · Vas 200.3 l · in the database
- 18 Sound 18LW2420fs 34 Hz · Qts 0.36 · Vas 196 l · in the shop
Specifications
| Allgemein | |
|---|---|
| Manufacturer | BEYMA |
| Category | Low Frequency |
| Series | LEX |
| Magnet | Ferrite |
| Impedance (Ω) | 8 |
| Power handling (W) | 1600 |
| Sensitivity (dB) | 97 |
| Frequency from (Hz) | 35 |
| Frequency to (Hz) | 1000 |
| Abmessungen & Korb | |
|---|---|
| Diameter | 18 |
| Voice coil (inch) | 4 |
| Mounting depth (mm) | 233 |
| Weight (kg) | 14.9 |
| Thiele-Small-Parameter | |
|---|---|
| Re (Ω) | 5.3 |
| Le (mH) | 1.7 |
| Fs (Hz) | 34 |
| Qms | 7.4 |
| Qes | 0.4 |
| Qts | 0.38 |
| Vas (l) | 188 |
| Xmax (mm) | 13 |
| Vd (cm³) | 1631 |
| BL (Tm) | 26.9 |
| Mms (kg) | 0.252 |
| Sd (m²) | 0.1255 |