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Clarion M109

Marine CD receiver

7 Reviews | 6 questions - 10 answers

Item # 020M109

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Our take on the Clarion M109

Rugged and easy-to-use, Clarion's M109 marine CD receiver is a great way to add the excitement of music to the fun of boating. It starts with the build — the M109 sports a HumiSeal-coated circuit board, designed to repel moisture and inhibit mildew, and the receiver meets tough industry standards for resistance to salt/fog and UV exposure.

Clarion M109 Marine CD receiver

Ready for the great outdoors

Rugged and easy-to-use, Clarion's M109 marine CD receiver is a great way to add the excitement of music to the fun of boating. It starts with the build — the M109 sports a HumiSeal-coated circuit board, designed to repel moisture and inhibit mildew, and the receiver meets tough industry standards for resistance to salt/fog and UV exposure.

The M109 spins your CDs, including those you've loaded with MP3 and WMA files. You can plug your MP3 player or satellite radio tuner into the handy front-panel auxiliary input. Clarion's Z-Enhancer Plus EQ gives you multiple levels of control at selectable frequencies, while Magna Bass EX kicks in some extra low-frequency power down low.

Product Highlights:

    General features:
    • marine CD receiver with built-in amplifier (21 watts RMS CEA-2006/50 peak x 4 channels)
    • conformal-coated circuit board
    • meets ASTM B117 (salt/fog exposure) and ASTM D4329 (UV exposure) standards
    • plays CDs, CD-Rs, and CD-RW discs, including discs loaded with MP3 and WMA music files
    • detachable face with a 2-line black-on-white display
    • optional remote control
    Audio features:
    • Z-Enhancer Plus EQ (2-band parametric EQ with 3 preset curves)
    • Magna Bass EX bass boost
    • compatible with Clarion Bluetooth adapter
    • inputs: front auxiliary input
    • outputs: 4-channel preamp outputs ( 2-volt front, sub nonfading)
    Other features and specs:

    Installed in boat, works well.Would buy again.

    Anonymous, Hamburg, NY

    What's in the Box:

    • Marine AM/FM/CD receiver
    • Sleeve (installed)
    • Face (installed)
    • Trim ring (installed)
    • Face-case
    • Wiring harness (with in-line 15A fuse on constant power wire)
    • 2 Hook plates (radio removal tools)
    • Hex-head screw (with flat-washer attached)
    • Metal backstrap
    • Face fixing clip
    • Owner's Manual (Eng/Fre/Spa)
    • Installation/Wire Connection Guide (Eng/Fre/Spa)
    • Warranty sheet

    Clarion M109 Reviews

    Average Customer Review(s):

    (7 Reviews)

    Clarion M109

    Anonymous from Hamburg, NY on 12/2/2016

    Crutchfield Customer Review (What's this?)

    Installed in boat, works well.Would buy again.



    Clarion M109

    Anonymous from Milford, PA on 9/11/2016

    Crutchfield Customer Review (What's this?)

    Well built,basic radio and cd player. Everything works and has good sound output



    clarion m109 radio

    john s from Bossier City, LA on 7/24/2016

    Crutchfield Customer Review (What's this?)

    easy install. radio works perfect. great price. very pleased!!!!!!!

    Pros: great price,easy install, works perfect.

    Cons: none

    Nice receiver for the money.

    Jim from Mars, PA on 7/19/2016

    Crutchfield Customer Review (What's this?)

    Everything you would expect from a Clarion receiver. Great sound and price!

    Pros: Good value for a marine receiver. Love the CD player. Lots of features.

    Cons: None

    Clarion M109

    Anonymous from Des Moines, IA on 5/31/2016

    Crutchfield Customer Review (What's this?)




    Clarion M109 installed in Pontoon boat

    Tim from Montgomery, TX on 5/17/2016

    Crutchfield Customer Review (What's this?)

    I replaced a 10 year old marine Clarion CMD4 with the Clarion M109 in a 2006 JC pontoon boat. The wiring harness was an exact match. The radio fit in the same size dash opening. One thing I forgot to do was purchase a splash proof cover.

    Pros: wiring matched old clarion

    Cons: Don't forget that this model needs a spashproof cover.

    Clarion M109

    Marcus from New Iberia LA on 1/22/2016

    Crutchfield Customer Review (What's this?)

    Great unit. Sound is good confusing eqsettigs




    Hands-on research

    Features and Specs

    AUX Input Front
    Audio/video Input ---
    USB Input No
    CarPlay No
    Android Auto No
    Siri Control No
    Android Control No
    Memory Card Slot N
    Bluetooth Compatible No
    Satellite Radio Ready No
    HD Radio No
    Navigation ---
    iPod Compatibility
    Full size N/A
    Nano N/A
    Touch N/A
    iPhone N/A
    CEA-2006 Compliant Yes
    RMS Power Output 20 watts
    Peak Output 50 watts
    RMS Power Bandwidth 20-20kHz
    Preamp Outputs 4-channel
    Sub Preamp Outputs Yes
    Switchable Rear Preamp Outputs No
    Video Screen No
    Preamp Voltage 2 volts
    Display Color White/Black
    Key Button Color White
    EQ Bands 2
    Wireless Remote Optional
    Steering Wheel Control Compatible No
    Parts Warranty 1 Year
    Labor Warranty 1 Year
    FM Sensitivity 9 dBf
    European Tuning No
    Seek/Scan Seek
    Radio Data System No

    Product Research

    Marine Rated
    Display Features
    Audio Section
    Radio Functions
    Disc Playback
    Auxiliary Connection
    Bluetooth/Remote Control

    Marine Rated

    Marine Tested: The Clarion M109 Marine CD receiver has been engineered and tested for use in the harsh marine environment. The M109 meets ASTM B117 and ASTM D4329 guidelines ensuring the receiver's resistant to salt, fog and UV exposure. The receiver features a drip shield chassis to keep water from dripping onto the unit's internal circuits. In addition, the headunit's PCB and microprocessor are conformal coated to protect them from corrosion.

    Display Features

    Ergonomic Face Design: The Clarion M109 features an easy-to-use rotary volume control and easy-to-read illuminated buttons on the face which are laid out in an asymmetrical design to place the most used features within a specific area for ease of use and less user distraction. The front panel 3.5mm auxiliary input on the M109 makes it easy to connect an external audio device

    Digital LCD Display: The single-line digital LCD display, with white background and black characters, on the M109 allows numbers and characters to be displayed clearly in all lighting conditions.

    Illumination Dimmer: The receiver's display automatically dims to a preset brightness when the vehicle's headlights are turned on. The wiring harness includes an orange/white lead that should be connected to the vehicle's parking light circuit in order for the dimmer feature to operate.

    Screen Saver: This unit is provided with a Screen Saver function which allows you to show various kinds of patterns and characters in the operation status indication area of the display in a random order. You can turn this function on or off. If the button operation is performed with the screen saver function on, the operation display corresponding to the button operation is shown for about 30 seconds and the display returns to the screen saver display.

    Detachable Face Security: This unit features Detachable Face Security. A face-case is included to protect the unit's faceplate when detached. A face-fixing clip is supplied for making the face non-detachable, if desired.

    Audio Section

    CEA2006 Compliant: The power specifications for the M109 are compliant with the CEA2006 Mobile Amplifier Power Testing and Measurement standards from the Consumer Electronics Association (CEA). These standards were developed as a way to equitably compare power specs from model to model and between manufacturers. The power output specs for the M109 are as follows:

    • CEA2006 Specs: 20 watts RMS x 4 channels (at 4 ohms, 20Hz-20kHz, 1% THD-N)
    • Maximum Power Output: 50 watts x 4 channels (200 watts total)

    4ch/2V RCA Output: The Clarion M109 features 4ch/2V RCA line level outputs. This unique design assigns one pair of RCA outputs to the front channels, while the other pair is assigned as a non-fading subwoofer output. The rear channels are delivered through the unit's built-in 50W x 4 amplifier. You can fade front line out to rear internal amplifier for overall system balance, while the subwoofer output level can be independently adjusted through the non-fade volume control feature incorporated into the unit's rotary volume control from -6 to +6.

    Note: The non-fading subwoofer output does not feature a built-in low-pass crossover. You will need a subwoofer amplifier with a built-in low-pass crossover or external low-pass crossover.

    Z-Enhancer Plus: Z-Enhancer Plus features four bands of equalization boost (B-Boost, Impact, Exite and Custom). Along with 2 bands of parametric equalization, the Z-Enhancer Plus circuitry enables sound adjustments with more flexibility than the basic Bass and Treble tone controls.

    • B-Boost: Bass is emphasized from -3 to +3.
    • Impact: Bass and treble are emphasized from -3 to +3.
    • Excite: Bass, treble and midrange are emphasized from -3 to +3.
    • Custom: Adjusts the bass and treble independently from -7 to +7 (-14 to +14dB). You can set the effected bass frequency to 60, 80, 100, or 200 Hz and the Q-factor to 1, 1.25, 1.5 or 2.0. The effected treble frequency can be set to 10k, 12.5k, 15k, or 17.5k.
    • Off: Bass and treble are both set to Flat (0 dB).

    Magna Bass EX (Extend): The Magna Bass Extend feature does not adjust the low frequencies like the normal sound adjustment function, but emphasizes the deep bass frequencies to provide you with a dynamic sound. This circuit boosts bass at an ultra-low frequency of about 50Hz, creating a rich, deep, defined bass rather than the muddy, booming bass of a standard loudness control. What is more, boost levels are dependent on the system volume, resulting in balanced system response and dynamic bass reproduction.

    Radio Functions

    AM/FM Tuner: The Clarion M109 is equipped with a built-in AM/FM tuner offering 18 FM station presets and 6 AM station presets.

    Instant Station Recall (ISR): You can store one radio station in Instant Station Recall (ISR) memory and recall it from any mode (except Power Off). Once the ISR station has been recalled, you cannot tune to another station without first disengaging the ISR function. You can, however, switch to another source.

    Disc Playback

    MP3/WMA Playback: The unit can play MP3 and WMA files recorded onto CD-R and CD-RW discs using ISO9660 Level 1 or 2, Joliet, or Romeo formats. The player can recognize up to 8 hierarchical levels, 256 files per folder and 578 total files. Bit rates for MP3 are 8-320 kbps, plus VBR (Variable Bit Rates). Bit rates for WMA are 48-192 kbps. This unit is compatible with, and will display MP3 and WMA ID3 tags up to 64 characters.

    Disc-In-Play-Function: This feature allows you to turn the power to the unit "on" and start playing the disc automatically when the disc is inserted even if the unit is not powered up, as long as the ignition key is turned to the "on" or "acc" position.

    Scan Play: This function allows you to locate and play the first 10 seconds of all the tracks recorded on a CD or the first 10 seconds of the first track of all the folders on an MP3/WMA disc.

    Last Position Memory: If you turn off the unit while a disc is playing, it will resume playback at the stopping point when it is turned on again.

    Auto Reload: When a CD is ejected and left sticking out of the CD slot for 15 seconds, the unit automatically reloads the CD to protect if from damage.

    Mounting: For proper CD playback you must install the unit within 30-degrees of horizontal.

    Note: When ISO-DIN mounting, you will need to use your vehicle radio's original factory ISO screws.

    Auxiliary Connection

    Auxiliary Input: The M109 feature a front panel 3.5mm auxiliary input so you connect your external portable audio player or portable satellite radio receiver to this headunit. You can adjust the Auxiliary input sensitivity level from Low, Mid, to High to match the volume output of your connected external audio device.

    Bluetooth/Remote Control

    Optional Remote: The M109 is compatible with Clarion's RCB-176 infrared wireless remote control (020RCB176, sold separately) for wireless operation of the CD player. The remote measures 1.715" wide x 0.495" tall x 4.465" long.

    Bluetooth Ready: The M109 is compatible with Clarion's BLT370 Bluetooth system (020BLT370, no longer available).

    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 verify what’s in the box, 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.

    Q & A

    Customer Q&A

    Crutchfield asked  
    Why did you buy this?

    great price[ andy  Jul 14, 2016 ]
    Price and I now have a clarion and hoping wiring harness is the same.[ Ervin  Jun 06, 2016 ]
    Good price and it has a front aux jack which is a lot easier to plug a external media device into than Bluetooth or USB.[ Lawrence  Apr 27, 2016 ]
    The unit was reasonably priced and is considered to be of good quality, and its facade is silver, matching the original unit being replaced.[ James  Feb 11, 2016 ]

    6 questions already asked

    Thanks for your question. For information on comparing different models I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences and help you make the best choice for your system and your budget.[ Kenny  Sep 10, 2016 ]  Staff
    Yes. The stereos use the same 16 pin plug with the same wires in each location. I hope that helps My Bio: [ Ryan  Jul 27, 2016 ]  Staff
    Not sure, but it's easy to switch the wiring to the new harness.[ JAMES L  Jul 19, 2016 ]
    Yes the wiring harness is the same[ Joe  Jul 19, 2016 ]
    We had a M235 radio and the new wiring on the M109 matched. Same plug on back of radio.[ Gary  Jul 19, 2016 ]
    Jeff P I replaced my m255 that I had in my pontoon boat with the clarion M109 last year and the harnesses were the same. Their tech service at Crutchfield is second to none and they got my order to me as promised. Great company to deal with!BobB[ ROBERT  Jul 05, 2016 ]
    Yes[ ken  Jul 04, 2016 ]
    I don't know--sorry. JP[ JAMES  May 27, 2014 ]
    Yes we purchased this unit. We installed it and still had problems. Our old one just quit one day and we just thought it was "old".. I messaged the Crutchfield Team and they told us what to check and the speaker wires had been chewed through by a muskrat (pontoon sits on the lake all summer). Crutchfield allowed us to sent the unit back AND helped with our problem.. I would recommend buying from them any time.[ CONNIE  May 27, 2014 ]