LF
Mid-Woofer
8"
8FHW
Code: DR-8-022-4R-B2-C0001
Mid-Woofer/8inch/Ferrite/PP/100W/4ohm
Key Features
- Mid-woofer designed for outdoor or indoor applications
- UV stabilized Polypropylene cone and rubber surround
- Components are treated to survive harsh outdoor environments
Quick Specs
Impedance
4 Ω
Program Power
200 W
Sensitivity
89.12 dB
Fs
36.00 Hz
Magnet
Ferrite
Voice Coil
30.5 mm
Design Notes
8FHW was designed as mid-woofer, with extended frequency response to low frequencies, as well as good extension into the mid-frequencies. All parts are intensively treated for outdoor usage, cone, surround material are with UV stabilizers. The used adhesives make sure the driver is waterproof.
The cone utilizes polypropylene material and rubber surround. This combination sports sizable amounts of low frequencies and good behavior in the higher mid-frequencies.
The cone utilizes polypropylene material and rubber surround. This combination sports sizable amounts of low frequencies and good behavior in the higher mid-frequencies.
Specifications
General Specs
Nominal Diameter
8"
Rated Impedance
4 Ohm
Magnet
Ferrite
Basket Material
Steel
Power Handling
AES Power
100 W
Continuous Power
200 W
Peak Power
400 W
Voice Coil
Diameter
30.5 mm
Winding Wire
Copper
Former
Aluminum
Winding Height
15.3 mm
T/S Parameters
Resonant Frequency (Fs)
36.00 Hz
Re
3.30 \u2126
Qes
0.380
Qms
4.53
Qts
0.350
Vas
34.30 liters
Sd
213.80 cm\u00B2
Mms
36.59 grams
Rms
1.83
Cms
0.5300
Bl
8.60 T\u00B7m
Le
0.890 mH
Sensitivity
89.12 dB
Design Details
Surround Material
NBR
Cone/Dome Material
PP
Spider
Nomex
T-Plate
8 mm
Xmax (peak)
3.65 mm
Xmech
11.65 mm
Overall Diameter
209.50 mm
Bolt Circle Diameter
197.00 mm
Baffle Cutout Dia.
184.50 mm
Mounting Holes
8
Depth (flange to rear)
86.50 mm
Net Weight
1.50 kg
Ordering Codes
Product Code
DR-8-022-4R-B2-C0001
Downloads
Frequency Response & Impedance
2D Drawing
Technical Summary
The 8FHWX4-382 is a 8-inch sub-woofer driver designed for compact hi-fi subwoofer systems, home audio, and cost-effective installation applications. It operates at 89.1 dB sensitivity (1W/1m). The motor and suspension are optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.
The driver is intended for use with moderate amplification (approx. 100 W AES / 200 W continuous) and DSP control. A high-pass filter in the range of 22-33 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 29-100 Hz, suitable for integration with a mid-bass or full-range driver in a two-way system.
This design is particularly effective in single or multi-driver bass reflex systems used in hi-fi, home theater, and cost-conscious installation applications, where a balance of low-frequency extension, compactness, and value are the primary priorities.
The driver is intended for use with moderate amplification (approx. 100 W AES / 200 W continuous) and DSP control. A high-pass filter in the range of 22-33 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 29-100 Hz, suitable for integration with a mid-bass or full-range driver in a two-way system.
This design is particularly effective in single or multi-driver bass reflex systems used in hi-fi, home theater, and cost-conscious installation applications, where a balance of low-frequency extension, compactness, and value are the primary priorities.
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): - 20 liters tuned to 41 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 38 Hz, HP filter 33 Hz - 24 liters tuned to 38 Hz: balanced response, general-purpose (recommended); -3 dB approx. 35 Hz, HP filter 28 Hz - 24 liters tuned to 34 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 29 Hz, HP filter 22 Hz
Frequently Asked Questions
- - Mid-woofer designed for outdoor or indoor applications
- - UV stabilized Polypropylene cone and rubber surround
- - Components are treated to survive harsh outdoor environments
Recommended enclosure alignments (bass reflex): - 20 liters tuned to 41 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 38 Hz, HP filter 33 Hz - 24 liters tuned to 38 Hz: balanced response, general-purpose (recommended); -3 dB approx. 35 Hz, HP filter 28 Hz - 24 liters tuned to 34 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 29 Hz, HP filter 22 Hz
Compact 2-way pa or hi-fi mid-woofer
AES Power: 100 W,
Continuous: 200 W,
Peak: 400 W.
Sensitivity: 89.12 dB (1W/1m).
