Marine Tested: The Clarion M309 Marine CD receiver has
been engineered and tested for use in the harsh marine environment. The M309
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
head unit's PCB and microprocessor are conformal coated to protect them from
Ergonomic Face Design: The Clarion M309 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 M309 makes it easy to connect an external audio device
Digital LCD Display: The dual-line digital LCD display,
with bluish-white background and black characters, on the M309 allows numbers and characters to
be displayed clearly in all lighting conditions.
Contrast: You can set the contrast level between 1 and 10
for best display visibility.
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.
Detachable Face Security: This unit features Detachable Face
Security. A face-case is included to protect the unit's faceplate when detached.
CEA2006 Compliant: The power specifications for the M309
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 M309 are as follows:
- CEA2006 Specs: 21 watts RMS x 4 channels (at 4 ohms,
20Hz-20kHz, 1% THD-N)
- Maximum Power Output: 50 watts x 4 channels (200 watts
3 Set of 2V Preouts: The M309 features front, rear and
subwoofer preamp outputs on a set of pigtails attached to the rear chassis. The
subwoofer output is non-fading and its output level can be adjusted from -6 to
+6. The subwoofer output does not contain a low-pass crossover.
Bass and Treble Adjustment: The Bass (100Hz) can be adjusted
from -7 to +7 (+/-14dB), while the Treble (10kHz) can be adjusted from -6 to +6
BBE MP: BBE MP is a sound enhancement and restoration
function for compressed audio files. BBE MP improves digitally compressed sound,
such a MP3, by restoring and enhancing the harmonics lost through compression.
BBE MP works by regenerating harmonics from the source material, effectively
recovering warmth, detail and nuance. You can set this function to High, Mid,
Low, or Off.
Mute: Use this function to turn off the sound immediately
from the remote control.
AM/FM Tuner: The Clarion
M309 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.
Satellite Radio Ready: There are several options for
connecting an optional XM or SIRIUS Satellite Radio receiver to this receiver:
MP3/WMA/AAC Playback: The unit can play MP3, WMA, and AAC
files recorded onto CD-R and CD-RW discs using ISO9660 Level 1 or 2, Joliet,
Romeo, or Apple ISO formats. The player can recognize up to 8 hierarchical
levels, 255 files per folder and 510 total files. Bit rates for MP3 and AAC are
8-320 kbps, plus VBR (Variable Bit Rates). Bit rates for WMA are 8-320 kbps.
This unit is compatible with, and will display MP3 and WMA ID3 tags up to 64
Note: Tracks purchased at an iTunes Music store, and
copyright-protected files cannot be played.
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.
Top Function: The Top Function resets the CD player to the
first track of a CD-audio disc. In the case of an MP3/WMA/AAC disc, the first
track of a folder being played will be reset.
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
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. When ISO-DIN mounting, you will need to use your vehicle radio's
original factory ISO screws.
USB Port: The rear-panel USB port (attached by 39" pigtail)
allows you to connect and play USB Mass Storage devices loaded with MP3,WMA, and
AAC files. This unit is compatible with USB 1.1/2.0 with maximum data transfer
rates of 12mbps. MP3, WMA, and AAC files with a bit rate of 8-320 kbps,
formatted in FAT or FAT32 are supported. The head unit can recognize up to 8
hierarchical levels, 255 files per folder and 510 total files. Titles up to 64
characters can be displayed while in USB mode. This unit also supports USB
Digital Media Steaming which allows you to play music files transmitted using
Media Transfer Protocol (MTP) and supports the playback of WMDRM 10 files. The
M309 offers the following playback operation of your USB Mass Storage device -
Play, Pause, Track selection, Fast-forward/backward, Scan play, Repeat play,
Random play and Folder selection. This unit will also charge your USB device
while connected and the radio is turned on.
Note: The optional Clarion 62" USB extension cable (020CAUSB,
sold separately) features a male USB type-A connector on one end which plugs
into the head unit's rear-panel USB port and a female USB type-A port on the
other end with a rubber cap that can be flush-mounted for a permanent and
safe installation in a marine environment.
iPod Direct: The Clarion M309 allows you to connect your
iPod to the head unit's rear-panel USB port using your iPod's USB/Dock cable for
audio playback, control and charging of your iPod. If you have an iPod nano (7th
gen), iPod touch (5th gen), or iPhone 5; use the Lighting-to-USB cable that came
with your Apple device to connect to the head unit. This unit also supports the
display of title information transmitted from your iPod. The M309 lets you
control your iPod/iPhone from the head unit or from your iPod/iPhone's
click-wheel or touch-screen. You can select music
for playback from your iPod/iPhone by category (Playlist, Artist, Album, Song, Genre,
or Composer). You can select between categories by using the head unit's numbered
preset buttons 1-6. Once you have selected a category, you can search through
the tracks in that particular category alphabetically. The Clarion M309 is
"Made for iPod/iPhone" compatible and supports the following iPod model features
(as of 9/25/2012):
|iPod Model||Generation||Tested Version||Media Type||Control Type||Display Type||Pandora app||Charge|
|Audio||Video||Head Unit||iPod||App mode||Artist/Song Text||Track Info |
Note: Apple iPod/iPhone software updates may change
functionality results. If you download a newer software version, you may
need to reset the head unit and your iPod/iPhone to regain functionality. If
this doesn't work, you may need to wait until a newer software update is
Dual Auxiliary Inputs: The M309 feature a front-panel 3.5mm
auxiliary and rear-panel stereo RCA input so you connect your external portable audio player or portable
satellite radio receiver to this head unit. You can adjust the Auxiliary input
sensitivity level from Low, Mid, to High to match the volume output of your
connected external audio device.
Note: The optional Clarion auxiliary extension cable (020CCAUX,
sold separately) turns the head unit's rear-panel stereo RCA inputs into a
single stereo minijack (3.5mm) input. The auxiliary extension cable's 3.5mm
connector features a rubber-cap and can be flush mounted for a permanent and
safe installation in a marine environment.
Fixed Audio Output: The M309 is equipped with a set of
Stereo RCA outputs for transferring the audio of the unit to an external system
with audio inputs
Wireless Remote: The M309 comes supplied with the RCB-176
infrared wireless remote control for wireless operation of the CD player.
Optional Wired Remote: The unit is also equipped with a rear
mounted DIN connector to accommodate an optional Clarion wired marine remote
control. The Clarion MW1 (020MW1,
sold separately) is a hardwired remote control with an LCD display; and the
Clarion MW2 is a hard-wired remote control without an LCD display (020MW2,
Bluetooth Ready: The M309 is compatible with Clarion's
BLT370 Bluetooth system (020BLT370,
sold separately) via its front panel 3.5mm stereo minijack inputs. The
BLT370 gives you hands-free communication from your compatible Bluetooth
cellular phone and wireless streaming audio from any Bluetooth compatible
portable audio device. The M309 can be set to automatically mute any music
audio to your vehicle's speakers so you can listen to your telephone call using
your car speakers.