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Sony MDX-C6500X

MiniDisc receiver with CD/MD changer controls

Item # 158MDXC650

MiniDisc convenience and Sony Xplod styling come together in your dash with the MDX-C6500X receiver.

Find what Fits your vehicle

MiniDisc convenience and Sony Xplod styling come together in your dash with the MDX-C6500X receiver.

Discontinued item

Item # 158MDXC650

Free custom vehicle instructions

Installation help for your car, from our experts.

Since 1974

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About the Sony MDX-C6500X

MiniDisc convenience and Sony Xplod styling come together in your dash with the MDX-C6500X receiver. The striking red, white, and amber display on the detachable, fold-down face will bring new life to your dash, while 4-way Sony high power (19 watts RMS) will energize your speaker system. Record your own custom mixes on your home MiniDisc recorder and enjoy all the benefits of digital sound in your car.

MiniDisc convenience and Sony Xplod styling come together in your dash with the MDX-C6500X receiver. The striking red, white, and amber display on the detachable, fold-down face will bring new life to your dash, while 4-way Sony high power (19 watts RMS) will energize your speaker system. Record your own custom mixes on your home MiniDisc recorder and enjoy all the benefits of digital sound in your car.

You get a full 10 seconds of Shock Resistant Memory, so you can install this receiver in your off-road vehicle, and go crazy — skipping won't be a problem. And, if you're in the mood for radio, Sony's top-of-the-line SSIR-EXA tuner will pull in stations your factory radio only dreamed about getting. D-Bass lets you dial in three levels of bass boost (without affecting the mids and highs) so you can coax every ounce of low-frequency performance out of your speakers.

Your options are wide open with two sets of preamp outputs for adding external amplifiers. And, if a theater-on-the-go is in your future, this receiver will control a Sony mobile video system.

  • detachable fold-down face
  • 10-second shock-resistant memory
  • optional wired and wireless remote controls(attenuation/mute function only accessible through remotes)
  • CD/MD changer/TV tuner controls
  • Custom File programming (with optional CD changer)
  • scrolling disc/track/title display
  • 2 sets of preamp outputs
  • SSIR-EXA tuner
  • source tone memory stores tone settings for each source
  • Rotary Encoder (volume, bass, treble, etc.) with Cross-Key Control (seek and manual tuning, track advance, track search, etc.) for easy operation
  • cell phone mute
  • wide bit stream processing for incredibly lifelike digital sound
  • clock
  • 19 watts RMS/50 peak x 4 channels
  • MD frequency response 10-20,000 Hz
  • MD signal-to-noise ratio 90 dB
  • FM sensitivity 8 dBf
  • 1-year warranty

What's in the box:

  • AM/FM/MD/Changer Controller receiver with 10-amp fuse inserted into chassis
  • Face
  • Hard face case
  • Trim ring
  • Sleeve
  • Wiring harness
  • DIN side springs (for "E" mounting)
  • 4 ISO-mount screws
  • 1 Metal backstrap
  • 1 Self-tapping screw (for backstrap)
  • 1 machine screw (for backstrap)
  • Operating instructions
  • Installation/Connections sheet
  • Warranty sheet
  • "Sony Mobile" window sticker (6-7/8" x 2-9/16").

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More details on the Sony MDX-C6500X

Research Team

Product Research

Disc Changer Controls
TV/Video Controls


Display/Button Illumination: The main display line (which shows tuner frequency, track number, track time and text info), the D-Bass indicator and the menu navigation arrows (cross-key controls) are displayed with white illumination. The clock/source portion of the display, the MD in indicator, the the repeat indicator and the shuffle indicator are displayed with red illumination. The D-Bass level is displayed with amber illumination. The D-Bass button is backlit with green illumination, and all other buttons are backlit with red illumination.

Dual Info Display: There is a portion of the display that can be set to show the source name (FM1, FM2, MD, etc) or the clock time while the main display line displays MD text, the track number and elapsed time, or the tuner frequency.

Motion Display: When the tuner is activated, the display will automatically switch back and forth between the radio frequency and a whirling graphic. When an MD is playing, the unit will cycle through the MD track number and elapsed track time, the disc name (if any) and the track title (if any), with the whirling graphic being displayed between each display change.  The motion display can be turned off.

Rotary Encoder Control with Cross-Key Control: This unit is equipped with a rotary control that turns like a conventional knob (for volume, bass, treble etc) and cross-key buttons (for seek and manual tuning, track advance and track search, etc) for easy, intuitive operation. There are four cross-key buttons; the four buttons are located  immediately above, below, to the left and to the right of the rotary encoder for convenient operation.

Flip-Down Face: The MD slot is located behind the flip-down face. The face is not motorized, so it must be manually pushed into it's viewing position after inserting/ejecting an MD.

D-Bass with Auto Level Adjust: Instead of a standard loudness function, this unit has D-bass, which is controlled by a single button on the face of the unit.  D-bass uses a sharper curve than standard loudness to give you more bass without interfering with mids and highs.  Besides "off", there is D-Bass 1, 2 and 3, each of which give you progressively more bass.  As the volume level is increased, the D-Bass level is automatically reduced to ensure the bass boost doesn't overpower your speakers at high volumes.

Wide Bit Stream Processing: A 20-bit data path through the digital filter and digital to analog converter delivers improved dynamic range and low-level linearity for lifelike sound.

MD Text Capable: When used with a MD that includes text information, this unit will display the Disc Name, Artist Name and/or Track Name.

10-second ESP: This unit is equipped with a 4Mbit memory to provide 10-seconds of electronic shock protection. This feature prevents MD skipping during disturbances lasting up to 10-seconds in duration.

Station Memo: You can assign a name of up to 8 characters in length to each tuner preset station. Station Memos can be used with the List-up function to locate a station.

SSIR-EXA Adaptive Reception: The SSIR-EXA tuner is equipped with "Adaptive Reception". The Adaptive Reception feature has two (IF AUTO and WIDE) for optimizing FM reception. The "wide" mode decreases the tuner's selectivity but results in better frequency response. The auto mode automatically adjusts the tuner for a good balance between frequency response and minimum station-to-station interference. The Adaptive Reception feature cannot be turned off.

Source Tone Memory: Each source (AM/FM/CD) can store its own bass and treble levels.

Remote Compatibility: This receiver can be controlled by the optional wired rotary commander (item 158RMX4S) and optional wireless remote (item 158RMX47).

Attenuator/Mute: The attenuate/mute function is accessible only by remote (wired and wireless remotes sold separately).

Cellular Mute Lead: This unit is equipped with lead that mutes audio output when a cellular call is received; when the call is over, the audio level is automatically restored. To use this feature, you MUST have a cellular phone with a muting output that can be connected to the cellular mute lead.

Sound and Display Settings (can be changed by using the shift and set up button):

  • Clock: used to set clock time
  • Beep: turns on/off the beeps that unit normally makes when a function is selected. The beep sound is sent from the internal amplifier ONLY, not the preamp outputs.
  • RM (Rotary Commander): changes the control direction of the optional remote so it corresponds to where the remote is mounted (left or right of steering column)
  • D.INFO (Dual Information): used to display the clock and play mode at the same time or to display the information alternately (OFF)
  • M.DSPL (Motion Display): turns the Motion Display on or off
  • A.SCRL (Auto scroll): automatically scrolls a disc or track name from a CD/MD changer or the built-in MD player if the name exceeds 8 characters

CD/MD Changer Controls

Control of Multiple Changers: A maximum of 5 CD changers, or a maximum of 5 MD changers may be connected to this receiver. When connecting CD and MD changers, you may connect up to a total of 7 changers (but there must not be more than 5 of one type of changer). When connecting more than one changer to this receiver, you must use item 158XAC30.


  • Changer select
  • Track +/-
  • Disc +/-
  • Track search +/-
  • Shuffle-1: one random play disc (does not repeat tracks)
  • Shuffle-2: plays track from all CDs in the selected changer (will repeat tracks)
  • Shuffle-all: plays tracks from all connected changers in random order (will repeat tracks)
  • Repeat-1: track repeat
  • Repeat-2: disc repeat
  • Custom File (FILE): for 110 discs (per changer). Assign up to an 8 character title per disc (Disc Memo). Assign "SKIP" OR "PLAY" to each track on the disc. A maximum of 24 tracks per disc can be set to"SKIP" and the disc must have a title first. After a disc has been given a custom title, you may search for the disc, by title, using the List function.

TV/Video Controls

TV/Video: You can connect an optional Sony TV tuner and TV monitor to this unit. This unit will automatically memorize the strongest TV signals (up to 12 channels). You can store a name for each channel (up to 8 characters) and display it by using the list function (displays on the TV monitor). Disc info that is stored in memory and radio station names can be displayed on the TV monitor.

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