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Boss SK653

175W 6.5" 3-Way Phantom Skull Series Coaxial Speakers w/ Neo Mylar Tweeters

In Stock

3-Year Manufacturer's Extended Warranty When Bought Here!

List price $59.99

You Save: $35.04 (58.41%)


with warranty A Pair

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Arrives by Thursday, Aug. 6 to zip 20147

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Bundled Savings with this Product


25% off on Sound Dampening!

For a limited time, save 25% off the NVX SDVK4 Versa Kit with a qualifying pair of speakers! Sound dampening will eliminate rattles, insulate against heat, and also improve the sound and output of your speakers!




Boss SK653



25% OFF



Special Price $14.99 ($19.99 if purchased separately)


• Eliminates Road Noise
• Quiets Vibrations
• Stops Rattles
• Increases SPL
• Reduces Heat
• Simple To Install
• Easy To Form Aluminum
• Four Step Peel and Stick Installation
• One 18" x 32" Piece

(Offer 1 of 1)

Combined Total Price


You Save $5.00

Boss Audio Store

General Features:

  • Phantom Skull Series 6-1/2" 3-Way Full Range Speaker System
  • Power Handling:
    • Peak: 350 watts per pair / 175 watts each
    • RMS: 175 watts per pair / 87.5 watts each
  • Black metallic poly injection cone
  • 1" Mylar dome tweeter
  • 1/2" Piezo Tweeter
  • Butyl rubber surround
  • Custom tooled removable skull design tweeter cover
  • Skull eyes light up to the beat of the music
  • 4 ohms impedance
  • 1" High temperature aluminum voice coil
  • Top-mount depth: 2-5/16"
  • Sensitivity: 90 dB
  • Frequency Response: 65-20,000 Hz
  • Authorized Platinum Internet Dealer
  • 1 year Sonic Electronix, and 2 years Manufacturer's warranty

Priced Per Pair

Product History:

Boss SK653 thumbnail
(newest, current model)
Boss SK652 thumbnail
(previous model, replaced by Boss SK653)

Speaker Specifications

This is the manufacturer product line of speakers.
Phantom Skull (Boss)
Priced Per
Car Speakers are typically sold in pairs so you will receive 2 speakers for each speaker purchase on speakers marked "Priced Per Pair". If a speaker is marked "Priced Per Each" then the speaker is sold individually and each purchase you make will result in 1 speaker. High-powered tweeters, midrange and full-range pro audio for car speakers are typically sold per each speaker.
Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
Tweeter Composition
Materials such as polypropylene, silk, cloth, and paper are the most common, where as many more recent tweeters are now manufactured with composites such as Aluminum, Titanium, Mylar, and other materials.

PEI is an acronym for "Polyetherimide" which is an amorphous, amber transparent, high-performance thermoplastic.

Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Poly Injection
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Butyl Rubber
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
175 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
87.50 watts
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
90 dB
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
65 - 20,000 Hz
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Bottom-Mount Depth
The depth when installed from the bottom of the mounting surface. Measured from the bottom of the speaker's magnet to the top of the mounting holes on the rim of the speaker.
Cutout Dimensions
Refers to the dimensions of the hole, measured in inches or millimeters, required to contain the speaker.
5-1/2" x 5-1/2" 
Speaker Grilles
A grating or screen of metal or plastic bars or wires, mounted in front of a speaker as protection. If yes, the speakers will include matching speaker grilles. If no, there are no grilles included.
Number of Speakers
This is the number of speaker that is included in the package. Each purchase will result in receiving the number of speakers indicated here. Please note that some items will have multiple woofers in the same enclosure. For sets of component speakers, this number will refer to the number of sets of speakers (For example, 2 would indicate the purchase includes 2 woofers and 2 tweeters).

Please refer to the product image and description for further details about the speaker.

Warranty and Return Policy

Parts Warranty Duration
3 years
Labor Warranty Duration
3 years
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


melissa, tx


February 26, 2012

Great product, used it for a stereo cooler I built and it stayed cool in a closed structure for hours. Great product for the cost!

11 of 20 found this helpful

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Council Bluffs, IA

Great Buy

August 6, 2012

Great speaker looks very cool sound great can't go wrong!!

7 of 13 found this helpful

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boss man

bakersfield, CA

great value

March 11, 2012

It a good value and I would buy more boss speakers or other boss item's.

9 of 17 found this helpful

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keene, TX

not bad at all

December 28, 2011

Bought these a few months back and they are pretty good and the skulls are a really nice touch, have to turn volume up most of the way for the lights to work, but really cool, might light up easier if i used an amp on them.

6 of 11 found this helpful

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Boss SK653

June 16, 2013

Nice speakers. Sound good. Fairly loud. Not too expensive, good value for the money.

8 of 16 found this helpful

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the lights are kool @ night

February 21, 2012

If you run the right amount of wattage to them these speakers have a great sound quality for the price, don't run them off of the radio you need a small amp to really appreciate these speakers.

8 of 16 found this helpful

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Stupid speakers

December 3, 2011

These are just waste of money. Rather buy Pioneer or Sony for that price.

7 of 14 found this helpful

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Amite, Louisiana

great buy awesome sound

October 4, 2014

From out the package these 6.5's scream. Fast shipping and great service. Turn it down for what? Awesome price, thought at 1st they wasn't gonna be as clear and crisp. The eyes light up also making them even more badass

7 of 15 found this helpful

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Yonkers,New York

Hello Very Nice speakers

March 28, 2012

I bought these speakers and they sound great solid as rock and my people so get them they are excellent speakers no complaint .

7 of 15 found this helpful

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Aliquippa, PA

Great value

September 21, 2012

Bought these for a custom tool box radio I made. They look awesome and sound great for an inexpensive set of speakers. The skull grilles and light up eyes get the most attention (of course). I powered them with a Sony high powered head unit with a built-in 7 band equalizer that lets you dial the sound in quite well. It is much louder than any boom box and has much better sound capabilities. Highly recommend these speakers.

8 of 18 found this helpful

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decent speakers

December 8, 2011

These are pretty cool speakers, the skulls are a nice touch, have to turn it up most of the way before the eyes light up, but cool to watch.

7 of 18 found this helpful

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Accessory Tools and Products

Accessories added

Streetwires 25 ft. of True Spec 12 Gauge Speaker Wire

You need speaker wire to connect your speakers!

Your Price $44.95

Belva 23 ft. of True Spec 12 Gauge Speaker Wire

100% Copper Clad Aluminum, high strand count with ultra-flexible PVC blended jacket for easy installation

Your Price $14.99

12-10 AWG Butt Connectors

These yellow butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers.

Your Price $6.99

12-10 AWG Yellow T-Tap Adapters

Allows for fast and easy splicing of wires by easily tapping into the cable.

Your Price $4.49

12-10 AWG Quick Disconnect Connectors

These yellow quick disconnect connectors make it easy to connect and disconnect speaker wire your to your new aftermarket speakers!

Your Price $6.99

NVX SDSK2 Speaker Kit

Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!

Your Price $14.99

Dynamat Xtreme Speaker Kit 10415

Enough sound dampening for 2 speakers!

Your Price $17.95

Stinger Roadkill Speaker Kit

Use this to eliminate rattle from your speakers!

Your Price $13.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $16.99

Universal Wire Puller & Grabber

Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!

Your Price $6.99

Xscorpion 9-Piece Nylon Plastic Pry and Chisel Tool Set

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $14.99

Xscorpion WDCR2 Window and Door Clip Remover

Removes and installs handle and window crank clips.

Your Price $6.99

3 in 1 Wire Quick Splice T-Tap and Butt Connector Crimper + Wire Cutter

Used for cutting copper and aluminum wires up to 8 gauge.

Your Price $29.99

NVX SDRLR1 Sound Dampening Rubber Roller

Install your Sound Dampening with ease! This heavy duty rubber roller is designed specifically to install your NVX products!

Your Price $7.99

Speaker Baffles for your Speakers

Enhance the sound of your speakers with these easy to install speaker baffles.

Your Price $9.99

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CS-V628 main

• Peak Power: 500W
• RMS Power: 80W
• 1" Polyetherimide (PEI) Dome Tweeter
• Mounting Depth: 1-11/16"
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• 4 Ohms Impedance
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SK653 main
Boss SK653

• Peak Power: 350W
• RMS Power: 175W
• Neo Mylar Soft Dome Tweeter
• Mounting Depth: 1-9/16"
• Silver Alpha-Cellulose Cone
• 4 Ohms Impedance
• Sensitivity: 85dB

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CS-V618 main

• Peak Power: 460W
• RMS Power: 60W
• Dual Cone Design
• Mounting Depth: 1-11/16"
• Carbon Mica Woofer Cone
• 4 Ohms Impedance
• High Temperature Voice Coil

Your Price $25.95

Browse 1 question and 3 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
Like to keep all components the same brand.
Cherie B on Sep 17, 2014
I liked the way it looked and the speaker itself and thought it would be a nice addition
JOHN V on Aug 28, 2014
got good reviews
francis w v on Sep 8, 2014

Product Summary


Model Number






Internal SKU


Internal Product ID


Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Boss SK653

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