Contact us
Close contact box

Boss MCBK420B

All-terrain Bluetooth® speaker pods and amplifier system (Black)

Item # 104MCB420B

Do you have a motorcycle or an ATV without a way to hear your favorite tunes, or a boat that needs accompaniment?...

Read more from Crutchfield writer, Bob B.

California customers:
Please click here for your Proposition 65 warning.

Ships free

In Stock
$89.99 each

About the Boss MCBK420B

Take it outside

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 MCBK420B 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.

Take it outside

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 MCBK420B 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.

Get connected

The MCBK420B includes an in-line volume control for the two 3” speakers, which include adjustable brackets to mount the streamlined pods to a handlebar or rail. You can plug your media player into the system's minijack input or connect via Bluetooth2.1 — either way,  the system's 600 watts of peak power will give you plenty of volume. And the system's Bluetooth reception range extends up to 33 feet, so you can keep the music playing even when you're not right next to the system. Wherever you go, the MCBK420B can handle the conditions and pump out the tunes.

READ LESS

Product highlights:

  • system includes 2-channel amplifier and two 3" speakers
  • marine-grade construction for weather resistance
  • Bluetooth enabled with auto pairing and reconnect
  • peak power output: 600 watts
  • frequency response: 80-15,000 Hz
  • multi-function wired remote control
  • includes adjustable mounting brackets
  • dimensions: 3-1/4"L x 3-1/8"W x 1-5/8"D
  • warranty: 3 years
  • Our 60-day money-back guarantee
  • MFR # MCBK420B
KEEP READINGREAD LESS

What's in the box:

  • 2 Speakers (each with 37" wire and mounting bracket attached)
  • 2-channel amp (with wiring attached)
  • Wired volume control (attached to amp with 76" cable)
  • Two 0.25" spacers
  • Two 0.195" spacers
  • Two 0.155" spacers
  • Two 0.122" spacers
  • Two 0.078" spacers
  • Two 0.040" spacers
  • Two M10x45mm bolts (installed)
  • Two M10 Split lock washers (installed)
  • Two M10 Flat washers (installed)
  • Two M10x30mm bolts
  • Two 5-amp ATO fuses (one installed/one spare)
  • Four 3/4" Self-tapping screws
  • 4 Small split lock washers
  • 4 Small flat washers
  • User manual
  • Warranty information
  • Boss Facebook note

Customer reviews

Loading reviews...

Boss MCBK420B Reviews

Average Customer Review(s):

Verified customer (What's this?)
Verified employee purchase (What's this?)

Pros:

Cons:

Crutchfield response

More details on the Boss MCBK420B

Product Research

Features

Amplifier Inputs: The amp has four inputs; RCA jacks on the amp, a female 3.5mm mini-jack on the amp, a male 3.5mm mini-plug attached to the amp with a 6' cord, and wireless Bluetooth. All four are inputs are live simultaneously, so if more than one is connected, selection must be made by turning all but one source off.

Note: If more than one source connected to the line inputs (RCA and 3.5mm) is turned on, it's likely you'll hear static through the speakers in addition to music, even if the source is muted or paused.

Speaker Mounting: The speakers are designed to mount to a round tube using the adjustable stainless steel clamps. Six different spacer sizes are included for use with tubes from 5/8" to 1-1/2" (approximately). Once the speakers are in place, but before the brackets are tightened, you can adjust the mounting angle. After mounting, the speakers can still swivel almost 360°.

Wiring: All the wiring is fixed length and already attached to the speakers and amplifier. Each speaker has a 37" input wire attached and the wires from both speakers are attached to a single Molex plug. The power and ground wires extend 74" from that same Molex plug and power wire has a 5 amp in-line fuse. The 22" speaker output wires are attached to the amplifier and terminated with the mate to the speakers' Molex plug.

Volume: The rotary volume control has a 76" cable attached that plugs into the amp and mounts in a round hole in a panel, 0.27" diameter.

Dimensions:

  • Speakers:
    • Width: 4-1/8"
    • Height: 4-1/4"
    • Mounting Height: 5-1/2" (above center of the bar to which the speaker is mounted)
    • Depth: 4-3/4"
  • Amplifier:
    • Width: 2-5/8" (3-1/8" including mounting flange)
    • Height: 1-5/8"
    • Length: 3-5/8" (4-5/8" including wiring)

Specifications:

  • Voltage: 10-16 volts DC
  • Power Rating: 120 watts (RMS) / 600 watts (Peak)
  • THD: <0.1%
  • Signal to Noise Ratio: >85 dB
  • Channel Separation: >50 dB
  • Frequency Response: 80 Hz - 15 kHz
  • Sensitivity: 150 mV - 1 V

Extended Warranty: Units purchased from Crutchfield after 3/1/2015 carry an extended warranty relative to purchases from Boss' standard dealer network. The new warranty is 3 years parts and labor.

Loading accessories...

Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Supposedly it's good for motorcycles and i want Bluetooth speakers for my Harley [ Joseph  Feb 22, 2019 ]
A
Good reviews, and bought a Boss receiver for my car that I'm happy with. [ Steven  Jun 03, 2018 ]
A
Good product, good reviews [ Peter  Aug 12, 2017 ]
A
Liked it [ Yolanda  May 29, 2017 ]
A
Good product, good value, good customer service [ Todd  Nov 17, 2016 ]
A
From reviews I read online. [ Terry  Aug 13, 2016 ]
A
Just got a four wheeler [ zackery tyler  Mar 18, 2016 ]
A
Price [ ronald  Feb 13, 2016 ]
SHOW MORESHOW LESS

4 questions already asked

Q
is the amp and speakers waterproof?
[ Daryl Christoph  Sep 23, 2018 ]
4 answers
A
Yes they are, it is marine grade meaning you can have them on a boat. I have mine mounted on my bike and have had it sitting in the pouring down rain with no problems. I would not submerge them in water but getting them wet should pose no problem.
[ Steven  Sep 25, 2018 ]
A
Yes
[ Robert  Sep 25, 2018 ]
A
Dont know haven't used them near or around water
[ Reynol  Sep 24, 2018 ]
A
Water resistant...mine has had a couple of hits with rain and still ok. I do let them dry out before running them tho. I think there are limits to them.
[ Timothy  Sep 24, 2018 ]
Q
The description says it supports simultaneous audio. So if I had my phone hooked up via Bluetooth and a VHF radio hooked up via audio input the radio would come across over the phone audio/music when there is radio traffic?
[ Theodore  Nov 15, 2017 ]
5 answers
A
Sorry but I haven't test that scenario, whenever I connect my phone via Bluetooth I don't turn on the radio.
[ EDWIN  Nov 28, 2017 ]
A
It should. I Bluetooth Pandora though my phone and GPS directions broadcast over the audio. Very hand on motorcycle trips!
[ donald  Nov 21, 2017 ]
A
"The amp has four inputs; RCA jacks on the amp, a female 3.5mm mini-jack on the amp, a male 3.5mm mini-plug attached to the amp with a 6' cord, and wireless Bluetooth. All four inputs are live simultaneously, so if more than one is connected, selection must be made by turning all but one source off.: You will find this information, and more, by clicking the "Details" tab on the unit's main webpage. I hope that helps. My Bio: https://www.crutchfield.com/bio/Ryan
[ Ryan  Nov 20, 2017 ]  Staff
A
I.T will come over and lower the volume of the music player
[ Luis  Nov 20, 2017 ]
A
I do not believe that's what it means. It means you can plug in one device and Bluetooth another but you can't listen to both at the same time.
[ Bruce  Nov 20, 2017 ]
Q
What is the lengh and width of the amp? I am trying to find a good spot to put it on my 2016 Honda foreman 500.
[ jfeathers12  Jun 27, 2017 ]
2 answers
A
3 1/4" L X 2 1/2" W X 1 1/2" D i installed my amp with tie wraps on the upper frame of the bike behind the forks. speakers went on the handle bars, plenty of wiring to reach battery for power.
[ CHRISTOPHER  Jun 27, 2017 ]
A
4''x4'' ,,1 1/2'' in hight
[ Cristobal  Jun 27, 2017 ]

Loading articles...

TOP