Hifonics HFX8D4 8 in Subwoofer, 250 W Max, 125 W RMS, Car & Powersports, Black
Hifonics HFX8D4 8 in Subwoofer, 250 W Max, 125 W RMS, Car & Powersports, Black
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Hifonics

Hifonics HFX8D4 8 in Subwoofer, 250 W Max, 125 W RMS, Car & Powersports, Black

|3 ratings

Key item features

  • Sealed Enclosure Selection: Supports small sealed or medium to large vented enclosures for system configuration.
  • Steel Basket Construction: Heavy-gauge, powder-coated steel basket supports the subwoofer assembly in vehicle audio systems.
  • Cone Movement Control: Pressure-treated foam surround and integrated one-piece poly-cotton spider coordinate cone movement.
  • Dual Coil Wiring: Dual 4-ohm voice coils and spade-style terminals support wiring choices for vehicle systems.
  • Key Mounting Specifications: Measures 8.23 x 8.23 x 4 in, weighs 4 lb, and requires a 7.28 in cutout diameter.
  • Ideal for small sealed or medium to large vented enclosures
  • Spider design: Integrated One-Piece Poly Cotton Spider
  • Dimensions (L x W x H): 8.23 x 8.23 x 4 inches
  • Weight: 4 pounds
  • Manufacturer warranty: 1-year warranty

Specs

Rms power rating, 125 WWoofer size, 8 inSubwoofer type, SubwooferBrand, HifonicsSubwoofer enclosure type, SealedImpedance, 4 ohm

About this item

Product details

The HFX8D4 is an 8 in subwoofer for car and powersports installations, with a dual 4-ohm voice-coil design for wiring flexibility. It handles 125 W RMS and 250 W maximum power. With 85 dB sensitivity, the subwoofer converts amplifier power into sound efficiently. The driver fits small sealed or medium to large vented boxes, allowing enclosure selection based on the build and desired configuration. A heavy-gauge, powder-coated steel basket supports the moving assembly. The pressure-treated foam surround and integrated one-piece poly-cotton spider guide cone movement, while the vented aluminum former and back venting path help dissipate heat during operation. Spade-style terminals provide a defined connection point for speaker wiring. The 8.23 x 8.23 x 4 in overall dimensions, 4 in mounting depth, and 7.28 in cutout diameter support measurement before fitting. This subwoofer is intended for vehicle audio applications where dual voice coils and enclosure type are key system-planning considerations.
  • Sealed Enclosure Selection: Supports small sealed or medium to large vented enclosures for system configuration.
  • Steel Basket Construction: Heavy-gauge, powder-coated steel basket supports the subwoofer assembly in vehicle audio systems.
  • Cone Movement Control: Pressure-treated foam surround and integrated one-piece poly-cotton spider coordinate cone movement.
  • Dual Coil Wiring: Dual 4-ohm voice coils and spade-style terminals support wiring choices for vehicle systems.
  • Key Mounting Specifications: Measures 8.23 x 8.23 x 4 in, weighs 4 lb, and requires a 7.28 in cutout diameter.
  • Ideal for small sealed or medium to large vented enclosures
  • Spider design: Integrated One-Piece Poly Cotton Spider
  • Dimensions (L x W x H): 8.23 x 8.23 x 4 inches
  • Weight: 4 pounds
  • Manufacturer warranty: 1-year warranty
info:
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Specifications

Rms power rating

125 W

Woofer size

8 in

Subwoofer type

Subwoofer

Brand

Hifonics

Warranty

Warranty information

Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.

Warnings

Customer ratings & reviews

4.3 out of 5 stars
stars
3 ratings3 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars33% (1)
  2. 4 stars67% (2)
  3. 3 stars0% (0)
  4. 2 stars0% (0)
  5. 1 star0% (0)
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Showing 1-3 of 3 reviews

May 15, 2026
Reviewer name: ManL
5 out of 5 stars
5 out of 5 stars review

Great quality and excellent performance. I'm satis

[This review was collected as part of a promotion.] Im really happy with my Maxxsonics product. The sound quality is amazing,easy to use, work really well.Great value for the price and I would definitely recommend it to others

Review from influenster.com
Helpful?3DD101G1XY9520079354722
May 21, 2026
Reviewer name: StormiB
4 out of 5 stars
4 out of 5 stars review

Great quality

[This review was collected as part of a promotion.] The Hifonics HFX8D4 8-inch subwoofer is powerful. It is easy to set up and offers flexible wiring options with a dual 4-ohm vouce coil design. It fits sealed and vented enclosures. It has a 4-inch mounting depth. It has an amazing sound quality, and it's made very well. I highly recommend this one.

Review from influenster.com
Helpful?3DD101G1XY9520079354722
May 14, 2026
Reviewer name: CindyC
4 out of 5 stars
4 out of 5 stars review

Easy to install

[This review was collected as part of a promotion.] It seems very durable and is made with good quality. The sound is clear and crisp perfect for long drives to and from work. It fits well into my car and was easy to install

Review from influenster.com
Helpful?3DD101G1XY9520079354722
Current price is $44.99
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