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NEW Beyma 8G40 G40 Series 8" Woofer 8 Ohm

Beyma
Part #253-003

NEW Beyma 8G40 G40 Series 8" Woofer 8 Ohm

Beyma
Part #253-003  
Model: 8G40

The Beyma 8G40 is a high-efficiency 8-inch transducer built for dedicated low-frequency reproduction in compact systems. With a sturdy motor and long-excursion design, it delivers deep, clean bass ideal for woofer use in tight cabinet spaces.

Key Features
  • 2.5-inch aluminum coil on a polyimide fiberglass former for durability under heat
  • Smooth and accurate response across its working frequency range
  • Low harmonic distortion for clean, transparent bass reproduction
  • ±6.5 mm Xmax allows for long linear cone travel
  • Peak excursion limit of 23 mm for added mechanical reliability
  • Built specifically for woofer and low-frequency use
  • Suited for small-format bass-reflex enclosure designs
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Overview

Beyma 8G40 G40 Series 8" Woofer 8 Ohm

8G40 G40 Series 8" Woofer 8 Ohm

Designed with professional woofer applications in mind, the 8G40 offers 250 watts AES power handling and a sensitivity of 95 dB, giving it the capacity to deliver strong, low-end output even in smaller systems. Its 2.5" aluminum voice coil is wound on a polyimide fiberglass former, providing high thermal endurance and mechanical reliability during extended use. The driver’s response is carefully engineered for accuracy, with low harmonic distortion that keeps the low frequencies clear and natural. A key strength of the 8G40 lies in its excursion design—±6.5 mm of linear Xmax allows for deep bass reproduction with low distortion, while its 23 mm peak-to-peak excursion before damage offers protection under high-demand conditions. Built for small bass-reflex enclosures, this driver is an ideal match for compact sound reinforcement systems requiring focused, high-performance low-frequency output.

Product Details

BrandBeyma
Model8G40
Part Number253-003
UPC8435469041899
Unit of MeasureEach
Weight7.6

Product Specifications

Nominal Diameter8"
Bolt Circle Diameter7.8
Power Handling (RMS)250 Watts
Power Handling (MAX)500 Watts
Impedance8Ω
Frequency Response70 to 6,000Hz
Sensitivity95dB 2.83V/1m
Voice Coil Diameter2.5"

Thiele-Small Parameters

Resonant Frequency (Fs)70Hz
DC Resistance (Re)6Ω
Voice Coil Inductance (Le)1.3mH
Mechanical Q (Qms)6.8
Electromagnetic Q (Qes)0.38
Total Q (Qts)0.36
Compliance Equivalent Volume (Vas)0.6ft³
Mechanical Compliance of Suspension (Cms)246mm/N
BL Product (BL)12.2T·m
Diaphragm Mass Inc. Airload (Mms)0.021g
Maximum Linear Excursion (Xmax)6.5mm
Surface Area of Cone (Sd)0.022cm²

Materials of Construction

Voice Coil Wire MaterialAluminum
Voice Coil FormerKapton® / Polyimide

Mounting Information

Overall Outside Diameter8.3"
Baffle Cutout Diameter7.1"
Depth3.8"
# Mounting Holes8

Parts Express Staff Recommended Enclosure Volume

Sealed Volume0.12ft³
Sealed F3165.5Hz
Vented Volume0.322ft³
Vented F392.71Hz

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