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NEW Beyma 18LEX1600Fe LEX Series 18" Subwoofer 8 Ohm

Beyma
Part #253-051

NEW Beyma 18LEX1600Fe LEX Series 18" Subwoofer 8 Ohm

Beyma
Part #253-051  
Model: 18LEX1600Fe

The Beyma 18LEX1600Fe is an 18-inch low-frequency transducer engineered for professional audio applications requiring high power handling, low distortion, and extended excursion capabilities. Its robust construction and advanced Maltcross cooling technology make it suitable for direct radiation and band-pass subwoofer configurations.

Key Features
  • 4" DUO in/out copper voice coil enhances thermal stability​
  • Exclusive Maltcross cooling system reduces power compression​
  • Extended controlled displacement with ±13 mm Xmax​
  • 60 mm peak-to-peak excursion before damage ensures mechanical reliability​
  • Weatherproof cone with treatment on both sides for increased durability​
  • FEA-optimized ferrite magnetic circuit with aluminum demodulating ring for improved performance​
  • Double silicone spider enhances mechanical stability​
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Overview

Beyma 18LEX1600Fe LEX Series 18" Subwoofer 8 Ohm

18LEX1600Fe LEX Series 18"  Subwoofer 8 Ohm

In 2017, Beyma introduced what is considered one of the finest subwoofers the company has ever produced—the 18LEX1600Nd. This highly competitive and attractive 18” subwoofer was developed through a unique blend of artistic design and cutting-edge engineering. 

The term LEX stands for more than just long excursion—it also represents high power handling, linear performance, low distortion, exceptional output, reduced weight, and strong reliability. 

Following its launch, Beyma continued to expand the LEX concept by developing several additional drivers, each built around the same design philosophy. These models vary in diameter and voice coil size but all feature a neodymium magnet motor structure.

In 2020, Beyma further extended the LEX series by introducing a full range of ferrite magnet versions. This move broadens the options available to sound system designers, making it easier to optimize system cost when lightweight neodymium magnets are not necessary.

These new ferrite models perform exceptionally well in vented enclosures, band-pass boxes, and horn-loaded designs. Their performance and construction make them an excellent choice for fixed installations and other permanent setups.

The 18LEX1600Fe's 1,600 W AES power handling and 97 dB sensitivity enable it to deliver clear and dynamic sound output, making it suitable for demanding audio applications. Its 4" DUO in/out copper voice coil enhances thermal stability, contributing to consistent performance over time. The exclusive Maltcross cooling system effectively dissipates heat, reducing power compression and maintaining consistent output during prolonged use. The driver features an Xmax of ±13 mm, allowing for extended linear cone movement and deeper bass response without distortion. With a peak-to-peak excursion before damage of 60 mm, the 18LEX1600Fe can withstand significant mechanical stress, ensuring longevity even under high-demand conditions. The weatherproof cone, treated on both sides, enhances durability and resistance to environmental factors, making it suitable for both indoor and outdoor applications. The FEA-optimized ferrite magnetic circuit, combined with an aluminum demodulating ring, improves overall efficiency and sound quality. The double silicone spider further enhances mechanical stability, maintaining consistent performance. Optimized for direct radiation and band-pass subwoofer applications, this transducer offers versatility and high performance for professional audio systems.​

Solid Line: On Axis
Dotted Line: 45° Off Axis

At Beyma, the challenge of heat dissipation is met with a clear objective: ensuring our speakers consistently deliver optimal performance within the system, maximizing total sound pressure level (SPL) and maintaining stability. 

It's widely recognized that a system's overall SPL decreases over time due to power compression effects in the speakers. Typically, larger voice coil diameters correlate with higher power capacity; however, this also necessitates bigger motor structures to achieve high total output from the transducer.

Beyma's Maltcross cooling technology presents multiple solutions to achieve this goal. It enables the woofer to handle higher power levels with a given coil diameter, allowing for designs with smaller coils and motor structures. This reduction in size decreases weight, increases sensitivity, and maintains adequate power handling for specific applications, resulting in a total SPL comparable to that of drivers with larger motor structures. 

Maltcross technology incorporates a forced convection circuit within the driver's core, effectively lowering the coil's operating temperature. Additionally, it functions as a demodulation ring, linearizing the transducer's inductance.

Product Details

BrandBeyma
Model18LEX1600Fe
Part Number253-051
UPC8435469044081
Unit of MeasureEach
Weight35.7

Product Specifications

Nominal Diameter18"
Bolt Circle Diameter17.3
Power Handling (RMS)1600 Watts
Power Handling (MAX)3200 Watts
Impedance8Ω
Frequency Response35 to 1,000Hz
Sensitivity97dB 2.83V/1m
Voice Coil Diameter4"

Thiele-Small Parameters

Resonant Frequency (Fs)34Hz
DC Resistance (Re)5.3Ω
Voice Coil Inductance (Le)1.7mH
Mechanical Q (Qms)7.4
Electromagnetic Q (Qes)0.4
Total Q (Qts)0.38
Compliance Equivalent Volume (Vas)6.64ft³
Mechanical Compliance of Suspension (Cms)85mm/N
BL Product (BL)26.9T·m
Diaphragm Mass Inc. Airload (Mms)0.252g
Maximum Linear Excursion (Xmax)13mm
Surface Area of Cone (Sd)0.1255cm²

Materials of Construction

Cone MaterialPaper-Treated Paper
Voice Coil Wire MaterialCopper
Magnet MaterialFerrite

Mounting Information

Overall Outside Diameter18.2"
Baffle Cutout Diameter16.3"
Depth9.2"
# Mounting Holes8

Parts Express Staff Recommended Enclosure Volume

Sealed Volume1.507ft³
Sealed F376.4Hz
Vented Volume4.253ft³
Vented F341.57Hz

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