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NEW Beyma 18LEX1200Fe LEX Series 18" Subwoofer 8 Ohm

Beyma
Part #253-049

NEW Beyma 18LEX1200Fe LEX Series 18" Subwoofer 8 Ohm

Beyma
Part #253-049  
Model: 18LEX1200Fe

The Beyma 18LEX1200Fe is an 18-inch low-frequency transducer designed for professional audio applications requiring high power handling, low distortion, and extended excursion capabilities. Its robust construction and advanced cooling technology make it suitable for direct radiation and band-pass subwoofer configurations.

Key Features
  • 4" DUO double-layer in/out copper voice coil enhances thermal stability​
  • Exclusive Maltcross cooling system reduces power compression​
  • Extended controlled displacement with ±11 mm Xmax​
  • 48 mm peak-to-peak excursion before damage ensures mechanical reliability​
  • Weatherproof cone with treatment on both sides for increased durability​
  • FEA-optimized ceramic magnetic circuit with aluminum demodulating ring for improved performance​
  • Double silicone spider enhances mechanical stability​
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Overview

Beyma 18LEX1200Fe LEX Series 18" Subwoofer 8 Ohm

18LEX1200Fe LEX Series 18" Subwoofer 8 Ohm

The 18LEX1200Fe's 1,200 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 double-layer 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 ±11 mm, allowing for extended linear cone movement and deeper bass response without distortion. With a peak-to-peak excursion before damage of 48 mm, the 18LEX1200Fe 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 ceramic 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.​

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
Model18LEX1200Fe
Part Number253-049
UPC8435469057692
Unit of MeasureEach
Weight33.5

Product Specifications

Nominal Diameter18"
Bolt Circle Diameter17.32
Power Handling (RMS)1200 Watts
Power Handling (MAX)2400 Watts
Impedance8Ω
Frequency Response40 to 1,000Hz
Sensitivity97dB 2.83V/1m
Voice Coil Diameter4"

Thiele-Small Parameters

Resonant Frequency (Fs)32Hz
DC Resistance (Re)5.3Ω
Voice Coil Inductance (Le)1.21mH
Mechanical Q (Qms)12.2
Electromagnetic Q (Qes)0.39
Total Q (Qts)0.38
Compliance Equivalent Volume (Vas)9.78ft³
Mechanical Compliance of Suspension (Cms)0.124mm/N
BL Product (BL)23.2T·m
Diaphragm Mass Inc. Airload (Mms)200g
Maximum Linear Excursion (Xmax)11mm
Surface Area of Cone (Sd)1255cm²

Materials of Construction

Cone MaterialPaper-Treated Paper
Voice Coil Wire MaterialCopper

Mounting Information

Overall Outside Diameter18.18"
Baffle Cutout Diameter16.33"
Depth8.85"
# Mounting Holes8

Parts Express Staff Recommended Enclosure Volume

Sealed Volume2.182ft³
Sealed F372.4Hz
Vented Volume2.182ft³
Vented F365.3Hz

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