82FHW 82FHW
LF Mid-Woofer 8"

82FHW

Code: DR-8-014-8R-B2-C0001

Woofer/8inch/Ferrite/Aluminium/60W/8ohm

Key Features

  • EXTENDED FREQUENCY RESPONSE
  • Hard anodized aluminum cone with rubber surround
  • Aluminum basket

Quick Specs

Impedance

8 Ω

Program Power

120 W

Sensitivity

88.31 dB

Fs

42.00 Hz

Magnet

Ferrite

Voice Coil

38 mm

Design Notes

82FHM is mid-woofer driver, designed for hi-fi, studio monitors and outdoor applications. Design sports hard-anodized aluminum cone and dustcap. These two key components extend the working range of the woofer. The parameters were optimized for usage in sealed enclosures.
All metal parts are coated to further increase weatherized protection, surround has UV stabilizers.
Strong aluminum basket was used in this design which further improves the mechanical fatigue and allow the speaker to be used in demanding portable products.
Further more, we have developed new magnetic circuit for this model. Our clever engineering takes the best balance between the performance and cost. Rest assure we have FEM optimized air-venting of this design that minimizes the air-noise and greatly improves voice coil winding venting.

Specifications

General Specs

Nominal Diameter 8"
Rated Impedance 8 Ohm
Magnet Ferrite
Basket Material Aluminum

Power Handling

AES Power 60 W
Continuous Power 120 W
Peak Power 240 W

Voice Coil

Diameter 38 mm
Winding Wire Copper
Former Aluminum
Winding Height 15.9 mm

T/S Parameters

Resonant Frequency (Fs) 42.00 Hz
Re 5.70 \u2126
Qes 0.760
Qms 3.10
Qts 0.610
Vas 33.60 liters
Sd 213.80 cm\u00B2
Mms 28.30 grams
Rms 2.41
Cms 0.5100
Bl 7.56 T\u00B7m
Le 0.470 mH
Sensitivity 88.31 dB

Design Details

Surround Material NBR
Cone/Dome Material Aluminum
Spider Nomex
T-Plate 5 mm
Xmax (peak) 5.45 mm
Xmech 10.45 mm
Overall Diameter 223.50 mm
Bolt Circle Diameter 210.00 mm
Baffle Cutout Dia. 189.00 mm
Mounting Holes 6
Depth (flange to rear) 87.50 mm
Net Weight 1.80 kg

Ordering Codes

Product Code DR-8-014-8R-B2-C0001

Frequency Response & Impedance

Frequency response of 82FHW

2D Drawing

2D drawing of 82FHW

Technical Summary

The 82FHMX8-445A is an 8-inch mid-woofer designed for outdoor hi-fi systems, bar and hospitality installations, and two-way domestic enclosures. It features a hard-anodized aluminum cone and dustcap, UV-stabilized NBR rubber surround, coated aluminum basket, and Nomex spider, providing weatherized construction rated from -30 degC to +70 degC. With a sensitivity of 88.31 dB (1 W/1 m) and a Qts of 0.61, this driver uses a compliant suspension design suited to moderate-volume enclosures with extended low-frequency response.

For high-output bar and outdoor applications, vented (bass reflex) enclosures of 35-70 litres tuned to 33-48 Hz are a supplementary option, using a 75 mm round port of approximately 164-174 mm length across all three tunings.

The 82FHMX8-445A handles approx. 60 W AES and 120 W continuous power. A high-pass filter in the 40-80 Hz range is recommended depending on alignment and application. The operating bandwidth is approximately 50-1,300 Hz, with cone beaming onset near 1,327 Hz and inductance rolloff near 1,930 Hz; a crossover to a dome tweeter or compression driver at 1.5-3.0 kHz is required in all two-way systems. DSP or passive high-pass filtering is mandatory in compact satellite alignments to prevent over-excursion below the box tuning frequency.

This driver is suited for single-driver two-way sealed enclosures in outdoor hi-fi speakers, patio and garden speakers, bar and restaurant background-music satellite cabinets, bookshelf and stand-mount monitors, subwoofer-satellite home audio systems, and surface-mount or column speakers in humidity- and UV-exposed installed audio environments. The weatherized materials and aluminum cone construction prioritize long-term durability and consistent acoustic performance across varying environmental conditions.

Recommended enclosure volumes are simulated results. For best enclosure volumes and tuning, we recommend secondary simulation and careful evaluation. Several rounds of samples and fine-tuning may be required for optimal results.

Enclosure Recommendations

Recommended enclosure alignments (bass reflex):
- 14 liters tuned to 48 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 44 Hz, HP filter 40 Hz
- 16 liters tuned to 44 Hz: balanced response, general-purpose (recommended); -3 dB approx. 40 Hz, HP filter 34 Hz
- 18 liters tuned to 40 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 34 Hz, HP filter 28 Hz

Frequently Asked Questions

  • - EXTENDED FREQUENCY RESPONSE
  • - Hard anodized aluminum cone with rubber surround
  • - Aluminum basket
Recommended enclosure alignments (bass reflex):
- 14 liters tuned to 48 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 44 Hz, HP filter 40 Hz
- 16 liters tuned to 44 Hz: balanced response, general-purpose (recommended); -3 dB approx. 40 Hz, HP filter 34 Hz
- 18 liters tuned to 40 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 34 Hz, HP filter 28 Hz
Outdoor / weather-resistant; sealed or vented pa mid-woofer, 2-way compact top
AES Power: 60 W, Continuous: 120 W, Peak: 240 W. Sensitivity: 88.31 dB (1W/1m).

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