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MB Quart NA3-560.4 4-channel marine amplifier 70 watts x 4 + 2 Pair Of Alpine SPS-M601W 6-1/2" 2-way marine speakers (White)

MB Quart NA3-560.4 4-channel marine amplifier 70 watts x 4 + 2 Pair Of Alpine SPS-M601W 6-1/2" 2-way marine speakers (White)

Regular price $419.95 USD
Regular price $499.95 USD Sale price $419.95 USD
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MB Quart NA3-560.4 4-channel marine amplifier 70 watts x 4 +  2 Pair Of Alpine SPS-M601W 6-1/2" 2-way marine speakers (White)




Alpine SPS-M601W

6-1/2" 2-way marine speakers (White)



An afternoon out on the water is a pretty great thing already, but it's even better when you add great sound. Alpine designed their SPS-M601 marine speakers to look good, sound good, and stand up to conditions that would turn lesser speakers into paperweights.


Alpine built these speakers to handle plenty of power, so they'll cut right through the wind, waves, and motor noise to give you the high fidelity you want. The super-stiff 6-1/2" poly woofers and titanium tweeters deliver accurate reproduction with impressive high-frequency details.


These IPx5 water-resistant speakers feature sleek, UV-resistant grilles and specially treated surrounds. They're tested tough against salt, fog, and blazing sunlight, so they'll sound great for seasons to come.




Product highlights:

white 6-1/2" 2-way marine speakers (pair)

poly woofers with weather-resistant surrounds

7/8" titanium/PEI balanced-dome tweeters

UV-resistant grilles and high-temperature ABS custom frames

power range: 2-35 watts RMS (110 watts peak power)

frequency response: 60-22,000 Hz

sensitivity: 89 dB

cutout diameter: 5"

frame diameter: 6.65"

mounting depth: 2.53"

warranty: 1 year




What's in the box:


Two 2-way marine speakers

2 Grilles

Two 10' Lengths of speaker wire (each has female quick-slides on one end and bare wire on the other)

Eight 1-1/8" Stainless steel mounting screws

8 Speed clips

Cutout template (on box)

On-line product registration information

Warranty information

Specifications and instructions on box



MB Quart NA3-560.4

4-channel marine amplifier — 70 watts x 4


For music on the go

Whether cruising through waves, sand, or mud — you want to hear your tunes clearly over the noise of having fun. MB Quart's NA3-560.4 marine amplifier can send four speakers 70 watts each to keep the music playing no matter where you are. This rugged and compact amplifier utilizes a number of technologies that ensure normal operation no matter what the conditions are — like over/under voltage protection, thermal slow-down (not shut-down), and current limiting on the outputs to protect speakers.


Versatile amp

You can configure this amplifier as a 2-channel amp and send 280 watts each to a pair of tower speakers, for example. In 3-channel mode the amp can power a pair of speakers with 70 watts each and a sub with 280 watts. The onboard variable tone controls let you tailor the sound to match your particular speakers and subs.


Marine tough

Three decades of marine and powersports audio expertise goes into making each MB Quart marine amplifier. Conformal coating protects the internal circuits from water and dirt, while stainless-steel hardware resists corrosion in even the saltiest environments. MB Quart designed and tested this amp to stand up to the toughest conditions on the water and off the beaten path.




Product highlights:

4-channel marine amplifier

70 watts x 4 at 4 ohms

140 watts x 4 at 2 ohms

280 watts x 2 bridged at 4 ohms

variable low- and high-pass filters (50-250 Hz, 12 dB/octave)

variable bass boost (0-9 dB at 45 Hz)

conformal-coated circuit board

weather-resistant construction

More Info:

preamp and speaker-level inputs

selectable signal-sensing turn-on with speaker-level input

wiring, fuse, and hardware not included with amplifier

10-gauge power and ground leads and a 35-amp fuse recommended

dimensions: 10"W x 1-1/2"H x 4"D

warranty: 1 year

MFR # NA3-560.4



What's in the box:



4-Channel amplifier

10" Power harness

10" Speaker output harness

Adhesive backed MB Quart logo panel

Four 3/4" Screws

2.5mm Allen wrench

Quick start installation guide

Remote turn-on note

MB Quart logo installation note

Window sticker