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NEW Beyma 18QLEX1600Fe QLEX Series 18" Subwoofer 4 Ohm

BeymaPart # 253-056
Model: 18QLEX1600FE

The Beyma 18QLEX1600Fe is an 18" ultra‑high‑output subwoofer conceived for serious professional systems that demand deep bass, high efficiency, and exceptional control. Its 4" QUATTRO in/out copper voice coil and advanced cooling design let it handle intense power without trade‑offs.

Key Features

  • 4" QUATTRO in/out copper voice coil maximizes force and heat resistance
  • Maltcross® cooling system cuts power compression over long sessions
  • ±13 mm linear excursion and 60 mm peak‑to‑peak travel gives serious movement
  • Weather‑treated dual‑side cone boosts durability
  • FEA‑optimized ceramic magnetic circuit with an aluminium demodulating ring keeps distortion low
  • Engineered for direct‑radiation or band‑pass subwoofer system use
NEW $447.00
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MSRP: $636.00
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Overview

Beyma 18QLEX1600Fe QLEX Series 18" Subwoofer 4 Ohm

18QLEX1600Fe QLEX Series 18" Subwoofer 4 Ohm

With a robust 1,600 W AES rating and a 97 dB sensitivity, the 18QLEX1600Fe-4 delivers impressive output without sacrificing efficiency. Its 4" QUATTRO voice coil enhances motor force and spreads heat more effectively across the coil structure. The Maltcross® cooling system allows for extended performance under load by minimizing thermal buildup and maintaining consistent response. It supports extreme cone travel, reaching ±13 mm of linear excursion and up to 60 mm peak-to-peak, giving it the ability to deliver clean, powerful low-end without distortion. The dual-treated cone and carefully engineered magnet circuit contribute to long-term durability, while the aluminum demodulating ring reduces unwanted harmonics. This model is ideal for professional subwoofer systems demanding both output and fidelity.

Solid Line: On Axis
Dotted Line: 45º 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
Model18QLEX1600FE
Part Number253-056
UPC8435469044258
Unit of MeasureEach
Weight35.1

Product Specifications

Nominal Diameter18"
Bolt Circle Diameter17.3
Power Handling (RMS)1600 Watts
Power Handling (MAX)3200 Watts
Impedance4Ω
Frequency Response30 to 1200Hz
Sensitivity96dB 2.83V/1m
Voice Coil Diameter4"

Thiele-Small Parameters

Resonant Frequency (Fs)31Hz
DC Resistance (Re)3.6Ω
Voice Coil Inductance (Le)2.8mH
Mechanical Q (Qms)11.6
Electromagnetic Q (Qes)0.25
Total Q (Qts)0.25
Compliance Equivalent Volume (Vas)6.26ft³
Mechanical Compliance of Suspension (Cms)80mm/N
BL Product (BL)30.7T·m
Diaphragm Mass Inc. Airload (Mms)0.336g
Maximum Linear Excursion (Xmax)13mm
Surface Area of Cone (Sd)0.1255cm²

Materials of Construction

Cone MaterialTreated Paper
Voice Coil Wire MaterialCopper
Basket / Frame MaterialCast Aluminum

Mounting Information

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

Parts Express Staff Recommended Enclosure Volume

Sealed Volume0.519ft³
Sealed F3107.7Hz
Vented Volume1.152ft³
Vented F367.23Hz

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