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Boss NX654

800W Peak (400W RMS) 6.5" Onyx Series 4-Way Coaxial Car Speakers

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• 400 watts Peak Each, 200 watts RMS Each
• 0.75", 0.75 Piezoelectric Dome Tweeters
• Poly Injection cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Learn more about the nx654

We apologize

This item has been discontinued

NVX - Worth the Envy - Direct to Consumer Car Audio

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Product Highlights


• 400 watts Peak Each, 200 watts RMS Each
• 0.75", 0.75 Piezoelectric Dome Tweeters
• Poly Injection cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Description


Boss brand icon

Authorized dealer

Product Details:

  • Power Handling:
    • Peak: 800 watts per pair / 400 watts each
    • RMS: 400 watts per pair / 200 watts each
  • Poly Injection cone material
  • Rubber speaker surround
  • 0.75", 0.75 Piezoelectric Dome Tweeters
  • Stamped basket structure
  • High temperature Aluminum voice coil
  • 1.25" Mylar cone midrange per speaker
  • 1" Voice coil
  • Top-mount Depth: 2.28"
  • Cutout Dimensions: 5.63"
  • Impedance: 4 ohm
  • Frequency Response: 65 - 20000 Hz
  • Sensitivity: 90 dB
  • Grilles included
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Per Pair


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Specifications & Details


Speaker Specifications
Priced Per
Pair
Number of Speakers
2
Speaker Size
6-1/2"
Design
4-way Coaxial
Tweeter Design
Dome
Tweeter Size
0.75", 0.75
Tweeter Composition
Piezoelectric
Woofer Composition
Poly Injection
Woofer Surround
Rubber
Peak Power Handling
400 watts
RMS Power Handling
200 watts
Total PEAK Per Pair/Set
800 watts
Total RMS Per Pair/Set
400 watts
Sensitivity
90 dB
Frequency Response
65 - 20000 Hz
Impedance (Per Voice Coil)
4 ohm
Voice Coil Diameter
1"
Shallow Mount Installation
No
Top-Mount Depth (Mounting Depth)
2.28"
Cutout Dimensions
5.63"
CTA-2031 Compliant
No
General specifications
Marine Certified
No
Hi-Res Certified
No
Color
Black
Illumination
None
Speaker Grilles
Yes
What is in the box?
Paperwork
User manual
Warranty/Registration card
WITB: Speakers
Speakers (2)
Grilles (2, attached)
Mounting screws (8)
Mounting clips (8)
Speaker connection cables (2)
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

NX654

Weight:

4.47lbs

Internal SKU:

nx654

Internal Product ID:

68495

Product and How-to Videos


  • How To Test Speaker Polarity | Tips & Demo | Car Audio 101
  • Replace your Car Speakers and Upgrade to Better Sound | Sonic Electronix

Customer Ratings & Reviews


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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.