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Boss MC420B

All-Terrain Bluetooth Speaker And Amplifier System

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Boss MC420B

All-Terrain Bluetooth Speaker And Amplifier System

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Boss Audio Store

Do you have a motorcycle or an ATV without a way to hear your favorite tunes, or a boat that needs accompaniment? Do you want to stream music from your phone or other Bluetooth-equipped device? This MC420B speaker system from Boss can satisfy your needs. It's weatherproof: the MC420B's components, including the speakers, circuit boards, and amplifier connections, have been specially coated and sealed to protect against damage from water and weather. And it's Bluetooth enabled, so you can connect wirelessly to your favorite device for hours of listening pleasure.

General Features:

  • All-Terrain Bluetooth® Speaker And Amplifier System
  • Power Output:
    • Peak Power: 600W
    • RMS: 300W x 2 Channels
  • Includes 2-channel amplifier and two 3" speakers
  • Marine-grade construction for weather resistance
  • Bluetooth enabled with auto pairing and reconnect
  • Chromed plastic speaker pods
  • Multi-function wired remote control
  • Includes adjustable mounting brackets
  • Frequency Response: 80-15,000 Hz
  • Dimensions: 3-1/4"W x 3-1/8"D x 1-5/8"H
  • Authorized Platinum Internet Dealer
  • 1 year Sonic Electronix, and 2 years Manufacturer's warranty

Front Speaker Specifications

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.
3"
Design
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.
2-way
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.

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.
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.
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.
600 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.
300 watts
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).
80 - 15000 Hz
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.
Yes

Rear Speaker Specifications

Speaker Size (Rear)

Refers to the size of the speaker.

Every vehicle has standard application sizes. Please contact us for your vehicle's specific speaker sizes if you do not know them.

3"
Design
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as 2-way, 3 drivers = 3-way and so forth. 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 (main driver) and the tweeter. Center channel speakers are great for those looking to capture true surround sound in their car.
2-way
Shallow Mount Installation
This means that the speaker is designed to be installed in areas that do not have a lot of space. Shallow mount speakers will typically have a mounting depth of less than 2".
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Read below for a description of each and other designs.

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.

An "EMIT" tweeter was introduced by industry leader Infinity. "EMIT" is the acronym for Electro Magnetic Induction Tweeter. They are a thin piece of plastic material with an etched voice coil on the surface of them suspended between 2 very powerful Samarium Cobalt magnets. This design is the key to the EMIT tweeters super fast, crystal clear high end sound.

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.

PEN is an acronym for the space age material "biaxially oriented polypropylene naphthalate film".

Woofer Composition
The woofer cone material is 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: thermoplastic plastics or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speaker manufacture.
Woofer Surround
The flexible ring around the edge of the woofer cone. Surrounds are usually made of cloth, foam or rubber. Rubber and composites tend to last longer and hold up better in harsh environments.
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.
600 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.
300 watts
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).
80 - 15000 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 you/your amp best.
Speaker Grilles
If yes, then package of speakers includes matching speaker grilles. If no, then there are no grilles or included. If optional, then we most likely will also have an optional set of grilles that can be purchased separately.
Yes

Amplifier Specifications

Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
2
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
Bass/Gain Remote
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
No
Fan Cooled
A great feature to have if an amp generates a large amount of heat. Cooling fans can help regulate the temperature to prevent the amp from overheating (burning).
CEA-2006 Compliant
Amplifiers that have been tested to meet specific standards. When a car amplifier meets these standards, you can be sure that it will be able to produce the amount of power specified by the official CEA-2006 rating. Usually, these rating consist of the following items:
  • RMS Power
  • Signal-to-Noise Ratio

This rating applies to both external car amplifiers, as well as the amplifiers inside of in-dash stereos.

Warranty and Return Policy

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

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
40%
4 Star
40%
3 Star
20%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.4
Value
4.4
Features
4.2
Design
4.6
Usability
5.0
Terry

Mineral Wells, TX

Overall
Durability
Value
Features
Design
Usability
Boss MC420B

August 22, 2014

It works great. I use it on my open cab Kubota RTV900. It delivers great sound that you can hear over the road and wind noise. I mounted the speakers under the hood and wired it to a switch on the dash. I mounted the volume control on the dash as well. It connects to my cell phone and launches Pandora automatically when turned on. It's exactly what I was expecting. I would recommend this for any loud outdoor environment.

38 of 45 found this helpful

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Lou

Charleston, South Carolina

Overall
Durability
Value
Features
Design
Usability
Great speakers

June 22, 2014

I enjoy every moment I have listening to music with the speakers and always will

35 of 44 found this helpful

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Huck

Cleveland Ohio

Overall
Durability
Value
Features
Design
Usability
Can't beat the price

August 19, 2016

I completely recommend this Bluetooth speaker system for your motorcycle boat or ATV. Lots of volume you can hear at high speeds. Only downfall is speakers are a little big and don't sit well on handlebars for a motorcycle. I modified mine in on a Goldwing to the dashboard so it worked out great for me.

0 of 0 found this helpful

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Serge

West Palm Beach, Fl

Overall
Durability
Value
Features
Design
Usability
They are OK on the Road

March 10, 2016

Definitely better than nothing. I am grateful for having a little something to satisfy my need for tunes, but a front fairing and some 6.5's on a cruiser are so much better. I heard the Kuryakyn speakers the other day. Sound better than the Boss speakers but, for the price Boss sells at, it was worth a try. I am looking into changing the handle bar bracket hardware. To me it looks too cheapy on my ape hangers. The speakers are good for temporary use. Save up for a fairing and larger speakers with tweeters would be the best way to go. You'll remember me!

0 of 0 found this helpful

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Jim G

Nashville, TN

Overall
Durability
Value
Features
Design
Usability
Great Product, Great Value

November 17, 2015

Bought the MC420B for my V Star 650. Wiring was easy and sound is great. Can hear it well even when traveling at 70mph.

0 of 0 found this helpful

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Accessory Tools and Products

Accessories added

Scosche TK12 Car Stereo Installation Kit

Includes panel removal tool, wire cutter/stripper, test light, RCA cable runner, screwdriver, and more!

Your Price $18.99

18 Butt Connectors, 2 Ring Terminals, and Zip Ties

Great for connecting your car stereo wires to the harness

Your Price $4.99

Kicker Big 3 Package 1/0 Gauge Big 3 Upgrade Kit

This Big 3 Kit features HyperFlex cable and comes with everything you need to upgrade your factory power and ground wire.

Your Price $141.83

XS Power BIG3XS 1/0 Gauge Big 3 Upgrade Kit

The XS Power Big 3 Kit features 100% OFC XP Flex cable and includes everything you need to upgrade your factory power and ground wire.

Your Price $92.52

XS Power BIG3XP 1/0 Gauge Big 3 Upgrade Kit

The Big 3 Kit comes with everything you need to upgrade your factory power and ground wire.

Your Price $49.99

Browse 5 questions and 14 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
I liked the price
Benjamin J B on Jul 28, 2016
seems like a good price and has good reviews and perfect for what i am going to use it for
Nicholas H on Aug 26, 2014
they were recommended and great price
kelly s on Jun 27, 2016
does the Boss MC420B come with the wiring or do I have to purchase the wiring separately?
A shopper on Aug 17, 2014
Best Answer: It comes with the wiring but it either needs to be wired to key switch power or as for me I installed a switch just for the system to keep from having to leave my key on and putting hours on my Machine if it's not running....
Reply · Report · Michael S on Aug 19, 2014
· Add Answer · I Have This Question Too (1)
I wired my amp directly to t he battery but when I turned it on it got hot reel fast does it have to be wired to a switch?
Ray K on Jul 27, 2016
Best Answer: No , I wired mine to the ignition fuse and the negative terminal. First take a 12v battery tester and check what side of the fuse is hot only when the key is on , the upside to this is that you don't drain the battery or need a in lines switch that you will foget to turn off, the down side is you cant listen to the music without the key on
Reply · Report · Frank S on Jul 27, 2016
· Add Answer · I Have This Question Too (0)
What is the physical dimensions of the Amp? I need it to fit inside the glove box onmy UTV.
A shopper on May 8, 2015
Best Answer: The amp will fit but the product is crap my speakers fell off my bike and they only lasted 4 months buyer be ware
Reply · Report · Jules C on May 11, 2015
· Add Answer · I Have This Question Too (0)
can 2 more speaker be plugged into audio jack?
rider1401 on May 26, 2015
Best Answer: Hello Matt,

All the "audio jacks" on this unit (i.e. RCA & 3.5mm) are INPUTS, so will NOT run speakers if "plugged into".
Reply · Report · Rick MStaff on May 27, 2015
· Add Answer · I Have This Question Too (0)

Product Summary

Manufacturer

Model Number

MC420B

UPC

791489121842

Weight

4.50lbs

Internal SKU

mc420b

Internal Product ID

77252

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 MC420B