Infinity INF-MPK250

Marine receiver and speaker package

  • Infinity INF-MPK250


  • Infinity INF-MPK250


  • Infinity INF-MPK250


  • Infinity INF-MPK250

  • Infinity INF-MPK250

  • Infinity INF-MPK250

  • Infinity INF-MPK250


Our take on the Infinity INF-MPK250

by Jon Paulette

Marine audio package from Infinity

This all-in-one package from Infinity has everything you need to start building a great marine audio system on your boat. The compact marine receiver and powerful 6-1/2" speakers are made for marine use, so they'll stand up to the harshest elements while giving you the power and performance you expect.

Infinity INF-PRV250 digital media receiver

This digital media receiver packs a lot of features into a compact, rectangular design. You'll enjoy AM/FM radio, of course, plus USB and auxiliary inputs that let you listen to the tunes stored on your iPod, iPhone, or MP3 player. Built-in Bluetooth® lets you enjoy music music streamed from your smartphone or other Bluetooth device.

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The INF-PRV250 includes a pair of rear-mounted preamp outputs, so you can expand your system with a marine amp in the future. The LED display tells you what you're listening to with just a glance, while the weather-resistant, UV-stable face and controls will stand up to sun, salt and moisture when you're riding the waves.

Infinity INF-612BC 6-1/2" speakers

Infinity's INF-612M 6-1/2" speakers feature a polypropylene woofer cone bonded to a tough, UV-resistant rubber surround. This design delivers full bass response, while maintaining excellent resistance to sunlight and moisture. The corrosion-proof, cast-polymer basket shrugs off deterioration caused by salt, moisture, and UV rays, while the stylish non-removable grille is specially treated to retain its shiny chrome finish.

The grille-mounted 1" tweeter offers excellent high-frequency projection. Infinity seals the front of the woofer cone along with the speaker's magnet structure for extra protection against moisture.


    Infinity INF-PRV250 digital media receiver
    • built-in amp (4 channels x 50 watts peak)
    • built-in Bluetooth®
    • rear AUX and USB ports
    • AM/FM radio
    • watertight, UV-resistant front panel
    • outputs: 2-channel preamp outputs
    • warranty: 1 year
    Infinity INF-612BC 6-1/2" marine speakers
    • polypropylene cone woofer
    • UV-resistant rubber surround
    • grille-mounted 1" polypropylene semi-dome tweeter
    • power handling: 2-75 watts RMS (225 watts peak power)
    • frequency response: 50-20,000 Hz
    • sensitivity: 92dB
    • top-mount depth: 2-5/8"
    • warranty: 1 year
    • Our 60-day money-back guarantee

    Hands-on research from the Crutchfield Labs (what are the Labs?)

    Features and Specs
    CEA-2006 Compliant No
    RMS Power Output 20 watts
    Peak Output 50 watts
    RMS Power Bandwidth Not givenHz
    Preamp Outputs 2-channel
    Sub Preamp Outputs No
    Switchable Rear Preamp Outputs No
    Video Screen No
    Preamp Voltage 2 volts
    Display Color White/Black
    Key Button Color White
    EQ Bands None
    Wireless Remote Optional
    Steering Wheel Control Compatible No
    Parts Warranty 1 Year
    Labor Warranty 1 Year
    AUX Input Rear
    USB Input Rear
    Memory Card Slot USB
    Bluetooth Compatible Built-in
    Satellite Radio Ready No
    HD Radio No
    Navigation ---
    iPod Compatibility
    Full size N/A
    Nano N/A
    Touch N/A
    Mini N/A
    iPhone N/A
    FM Sensitivity ---
    European Tuning Yes
    Seek/Scan Seek
    Radio Data System No
    Product Research
    What's in the box?

    Download owner's manual

    • Marine Receiver
    • 2 Marine speakers
    • Wiring harness
    • Aux/USB adapter (w attached 8' cable)
    • Antenna
    • U-bracket
    • Self-adhesive foam pad
    • 2 Self-adhesive foam strips
    • 2 Bolts
    • 4 Hex-nuts
    • 2 Lock-washers
    • Ten 1.125" self-tapping screws
    • 10 Speed-clips
    • Plastic collar
    • Manual

    Our Product Research Team

    At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

    Marine Receiver
    Marine Speakers

    Marine Receiver

    Marine Certified: The marine receiver has been engineered and tested for use in the harsh marine environment. The receiver features a solid aluminum chassis, front-panel protective gasket, and IP66 waterproof face. The receiver also meets or exceeds ASTM117 salt fog standards.

    LCD Screen: The marine receiver features a single-line LCD screen with a white background and black text.

    Audio Section: The marine receiver is equipped with a 50 Watts (Peak) x 4ch amplifier. The marine unit is also fitted with one pair of RCA outputs to connect an external amplifier or powered subwoofer. The marine receiver features 5 preset EQ modes - Flat, Classic, Pop, Rock, or Off. The marine head unit also offers independent Bass & Treble control; plus Balance & Fade adjustment. When listening to music at low volume levels, the Loudness feature will boost the bass & treble response. Every time a button is pressed the unit output a beep tone (this can be turned off).

    AM/FM Tuner: The marine receiver features a built-in AM/FM tuner with manual, seek, and preset tuning. You can select either US or European tuning. The marine unit provides 3 FM banks and 1 AM bank. Each AM/FM bank can hold up to 6 station presets, proving you with 18 FM station presets and 6 AM station presets. Stations can be stored manually or automatically.

    Bluetooth Audio Streaming: The marine receiver supports wireless audio playback (AD2P) and control (AVRCP) of a Bluetooth enabled audio player or smartphone. The marine receiver will be able to control basic playback functions of your Bluetooth device's stored music; such as Play/Pause, Skip Next/Previous, Fast Forward/Rewind and Random/Repeat. The marine unit also supports audio streaming of music apps downloaded on your smartphone with limited control. Advanced music control of your music apps will still need be done via your Bluetooth-enabled smartphone. This unit does not display song/artist information.

    Note: This unit does not support Bluetooth hands-free communication for making and answering phone calls.

    USB Port: The marine receiver is equipped with a rear-panel USB (type-A) port attached to the chassis by a 6.5" pigtail. The USB port allows you to connect a USB thumbdrive. The unit supports audio playback & control of MP3/WMA audio files stored on a compatible USB thumbdrive. The unit offers Play/Pause, Fast Forward/Reverse, Previous/Next Track, and Random/Repeat playback functions. The Intro Scan feature allows you to locate and play the first 10 seconds of each MP3/WMA track on a USB stick. This unit will also display song/artist information.

    Note: Media devices, such as smartphones and MP3 players, should be connected to the Marine receiver via Bluetooth or Aux input.

    Aux Input: This unit features a rear mounted, stereo RCA auxiliary input on a 6.5" pigtail so you can connect an external audio source. An RCA-to-Minijack cable (sold separately) will be required for the connection of a portable audio player with a headphone jack output.

    USB/Aux Adapter: The included USB/Aux adapter provides easy connection and disconnection of your USB thumbdrive and portable MP3 players. This adapter features an 8' cable terminated by a male USB (type-A) connector and male stereo RCA connectors which plug into the marine receiver's rear-panel USB port and Aux input. On the other end of the cable is a housing which contains a female USB (type-A) port and 3.5mm minijack input which can be mounted in a more convenient location. The USB/Aux adapter is designed to be flush-mounted and requires a cut-out of 1.315" (diameter) x 1.9375" (depth). A plastic collar locks the adapter into place. An integrated rubber cover protects the connections from the marine environment.

    Mounting Options: The marine receiver requires a rectangular cutout in the bulkhead for inserting the chassis. The integrated protective gasket, supplied U-bracket, and included hardware secure the unit in place against the mounting surface. Receiver dimensions:

    • Chassis: 5.165" (w) x 3.195" (h) x 1.5625" (d)
    • Face-Plate: 6.085" (w) x 4.085" (H) x 0.375" (d)
    • Cutout: 5.485" (w) x 3.545" (h) x 4.0625" (d)
    Note: The receiver does not include a mounting sleeve or ISO-mount screw holes to accommodate standard automotive installation.

    Marine Speakers

    UV- and Water-Resistant: These marine speakers feature UV- and water-resistant chrome grilles, cast-polymer speaker baskets, rubber woofer surrounds, polypropylene woofer cones, poly semi-dome tweeters, and stainless steel mounting hardware. The spider and tinsel leads are also treated against moisture and UV contamination for marine applications.

    • Woofers: Each speaker has a 6-1/2" polypropylene woofer cone that rejects moisture and UV contamination while delivering excellent performance. Each woofer uses a UV- and water-resistant rubber surround.
    • Cast-polymer Baskets: Cast-polymer baskets are used to provide a waterproof platform that rejects UV contamination.
    • Tweeters: Each speaker uses a 1" poly semi-dome tweeter for crisp, clear highs.
    • Mounting Hardware: The speaker comes with stainless-steel mounting hardware and a fixed grille.

    Speaker Dimensions:

    • Grille Diameter: 7.005"
    • Cutout Diameter: 4.965"
    • Mounting Depth: 2.625"
    • Mounting Height: 0.875"
    • Magnet Diameter: 3.825"
    • Bolt Pattern: 3.605" x 5.845"
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    Infinity INF-MPK250 Reviews

    Average Customer Review:

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    5 out of 5

    Infinity INF-MPK250

    Written By Jober, Overton tx on Monday, September 08, 2014
    Crutchfield Customer Review (What's this?)
    Super great quality and loud
    Was this review helpful?    Yes | No
    5 out of 5


    Written By PS, Florida on Friday, March 14, 2014
    I was a little hesitant at first as this is not your typical head unit setup but after installing it and cranking it up I am extremely impressed! I love the reliability of Infinity and this is a great kit for anyone looking to start a bigger system or just want something small. I love the blue tooth control; that is by far the best feature!

    I would definitely recommend this setup to anyone!
    3 out of 3 people found this helpful
    Was this review helpful?    Yes | No

    Add accessories for the Infinity INF-MPK250

    The marine environment requires marine-rated speaker wire. See all categories & accessories

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    For a more in-depth review and enhanced detailed information on the Infinity INF-MPK250, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_822MPK250/Infinity-INF-MPK250.html ).