VOLUME +/ button (page 23, 26)
Press to adjust the volume.

CD button (page 15, 17)

(select folder) button (page 16, 17, 20, 22)
TUNER MEMORY button (page 19)
Press to preset the radio station.
PLAY MODE/TUNING MODE button (page 16, 17, 18, 19, 28)
Press to select the play mode of a CD or MP3 disc. Press to select the tuning mode.

CLEAR button (page 18)

Press to delete a pre-programmed track or file.
DISPLAY button (page 14, 18, 24)
(play) button (page 15, 18, 22, 30)

Press to start playback.

SLEEP button (page 25)
Press to set the Sleep Timer.

(pause) button (page 16)

Press to pause playback.
/ (go back/go forward) button (page 14, 16, 17, 22, 26)
+/ (tuning) button (page 18)
Hooking up the system securely

MHC-EC69/EC69T only

* MHC-EC99/EC99T only
FM lead antenna (Extend it horizontally.) AM loop antenna To right speaker (High freq.) To right speaker (Low freq.) To wall outlet Solid (Blue/)
Solid (Black/) To left speaker (High freq.) Solid (Red/) Solid (Black/) To left speaker (Low freq.)

Antennas

Find a location and an orientation that provide good reception, and then set up the antennas. Keep the antennas away from the speaker cords, the power cord and the USB cable to avoid picking up noise.

Power

Connect the power cord to a wall outlet. If the plug does not fit the wall outlet, detach the supplied plug adaptor (only for models equipped with an adaptor).

Speakers

Attaching the speaker pads
Attach the supplied speaker pads to the bottom of the front speakers and subwoofer to prevent slipping.
Insert only the stripped portion of the cord.
Subwoofer (MHC-EC99/EC99T only)
Connect the subwoofer to the SUBWOOFER jack with the subwoofer cord. Place the subwoofer vertically to obtain a better bass reproduction. Also, position the subwoofer: n a solid floor where resonance is o unlikely to occur. t least a few centimeters away from a the wall. way from the center of the room or a place a bookshelf against a wall, to avoid generating a standing wave.
Front speakers: 4 pads for each speaker

Voltage selector

For models with a voltage selector, set VOLTAGE SELECTOR to the local power line voltage.
Subwoofer: 4 pads (MHC-EC99/EC99T only)

Inserting batteries

Slide and remove the battery compartment lid, and insert the two supplied R6 (size AA) batteries, side first, matching the polarities shown below.
When carrying this system

Use buttons on the unit.

1 Remove all discs to protect the CD

mechanism.

2 Press CD to select the CD function. 3 Hold down , and then press /

until STANDBY appears. power cord.
4 After LOCK appears, unplug the
With normal use, the batteries should last for about six months. Do not mix an old battery with a new one or mix different types of batteries. If you do not use the remote for a long period of time, remove the batteries to avoid damage from battery leakage and corrosion. Batteries installed devices shall not be exposed to excessive heat such as sunshine, fire or the like.

Setting the clock

Use buttons on the remote to set the clock.

1 Turn on the system.

Press /.
2 Select the clock set mode. 3 Set the time.

the minutes.

Press CLOCK/TIMER SET. If PLAY SET flashes, press / repeatedly to select CLOCK, and then press ENTER. Press / repeatedly to set the hour, and then press ENTER.
4 Use the same procedure to set
The clock settings are lost when you disconnect the power cord or if a power failure occurs.
To display the clock when the system is off
Press DISPLAY repeatedly until the clock is displayed. The clock is displayed for about 8 seconds.
CAUTION DO NOT place a disc here, as it may cause the system to malfunction.
Playing a CD/MP3 disc 1 Select the CD function.
Press CD (or FUNCTION repeatedly).

2 Place a disc.

Press on the unit, and place a disc with the label side up on the disc tray. To place additional discs, slide the disc tray with your finger as shown below. To close the disc tray, press on the unit. Do not force the disc tray closed with your finger, as this may damage the unit.

3 Start playback.

Press (or on the unit). To exchange other discs during playback, press EX-CHANGE on the unit.
If the discs are currently stopped, press DISC SKIP. To change discs while in other functions, press DISC on the unit.

Other operations

To Press Pause playback (or on the unit). To resume play, press the button again. Stop playback. Select a folder +/. on an MP3 disc Select a track /. or file Find a point in Hold down / a track or file during playback, and release the button at the desired point. Select Repeat REPEAT repeatedly Play until REP or REP1 appears. Select a disc DISC SKIP (or DISC on the unit) in stop mode. Switch to CD DISC on the unit function from (Automatic Source other function Selection). Exchange other DISC SKIP/EXdiscs while CHANGE on the unit. playing

To change the play mode

Press PLAY MODE repeatedly while the player is stopped. You can select normal play (no display for all discs or 1 DISC for a disc or * for all MP3 files in the folder on the disc), shuffle play (SHUF for all discs shuffle, 1 DISC SHUF for one disc shuffle or SHUF for folder shuffle), or program play (PGM).
* When playing a CD-DA (audio) disc, (SHUF) Play performs the same operation as 1 DISC (SHUF) Play.

Notes on Repeat Play

All tracks or files on a disc are played repeatedly up to five times. You cannot select REP and SHUF (all discs shuffle) at the same time. REP1 indicates that a single track or file is repeated until you stop it.
Note on shuffle play mode
When you turn off the system, the selected shuffle play mode (SHUF, 1 DISC SHUF or SHUF) is cleared and the play mode returns to normal play mode.
Notes on playing MP3 discs
Do not save other types of files or unnecessary folders on a disc that has MP3 files. Folders that have no MP3 files are skipped. MP3 files are played back in the order that they are recorded onto the disc. The system can only play MP3 files that have a file extension of.mp3. Even when file name has the.mp3 file extension, if the actual file differs, playing this file may generate a loud noise which could damage the speaker system and the system may malfunction. The maximum number of: folders is 150 (including the root folder). MP3 files is 255. MP3 files and folders that can be contained on a single disc is 300. folder levels (the tree structure of files) is 8. Compatibility with all MP3 encoding/writing software, recording device, and recording media cannot be guaranteed. Incompatible MP3 discs may produce noise or interrupted audio or may not play at all.
Creating your own program

(Program Play)

Use buttons on the remote to create your own program.
1 Select the CD function.
2 Select the play mode. 3 Select a disc.

number.

Press PLAY MODE repeatedly until PGM appears while the player is stopped. Press DISC SKIP repeatedly.
4 Select the desired track or file
Press / repeatedly until the desired track or file number appears. When programming MP3 files, press +/ repeatedly to select the desired folder, and then select the desired file.
Selected track or file number
Notes on playing multisession discs
If the disc begins with a CD-DA (or MP3) session, it is recognized as a CD-DA (or MP3) disc, and playback continues until another session is encountered. A disc with a mixed CD format is recognized as a CD-DA disc.

store other stations.

You can preset up to 20 FM and 10 AM stations. The preset stations are retained for about half a day even if you disconnect the power cord or if a power failure occurs.
Playing a tape (MHC-EC99T/EC79T/ EC69T only)
Use buttons on the unit to play tape.
Recording onto a tape (MHC-EC99T/EC79T/ EC69T only)
Use a TYPE I (normal) tape only. You can record just the portions you like from a sound source, including the USB device or connected audio components.
1 Select the TAPE function. 2 Insert a tape.
Press FUNCTION repeatedly. Press , and insert the tape into the cassette holder. Make sure there is no slack in the tape to avoid damaging the tape or the tape deck. Press.
1 Insert a recordable tape into the
cassette holder with the side you want to record facing up.
2 Prepare the recording source.
To Press Pause playback. To resume play, press the button again. Stop playback . Rewind or fast /. forward*
* Be sure to press after the tape has been wound or rewound to the end.
Select the recording source. Place the disc you want to record and press DISC SKIP to select a disc. When recording a folder from an MP3 disc, press PLAY MODE repeatedly to select , and then press +/ repeatedly to select the desired folder. To record only your favorite CD tracks or MP3 files in your desired order, perform steps 2 to 5 of Creating your own program (page 17).
Do not turn off the system during playback.

3 Start recording.

Press , and then start playing the desired recording source. The CD starts playing automatically after 10 seconds have passed. If there is noise while recording from the tuner, reposition the appropriate antenna to reduce the noise. While recording, you cannot listen to other sources.
Playing a file of a USB device
You can listen to music stored in the USB device. The audio formats that can be played back by this system are as follows: MP3*/WMA*/AAC* * Files with copyright protection (Digital

Press .

To stop recording
We recommend that you press first, and then press to avoid noise being recorded when you stop recording.
Rights Management) cannot be played by this system. Files downloaded from an online music store may not be played by this system.
Before using the USB device with this system
Refer to Playable USB devices (page 40) for a list of USB devices that can be connected to this system. Operation may not always be ensured even when using these USB devices. When USB cable connection is necessary, connect the USB cable supplied with the USB device to be connected. See the operating instructions supplied with the USB device to be connected for details on the operation method. Do not connect the system and the USB device through an USB hub. When the USB device is connected, READING appears and USB MEMORY lights up in the display. It may take about 10 seconds before READING appears depending on the type of USB device connected.

When the USB device is inserted, the system reads all the files on the USB device. If there are many folders or files on the USB device, it may take a long time to finish reading the USB device. The maximum number of audio files and folders that can be contained on a single USB device is 999 (including the ROOT folder). The maximum number of audio files and folders may vary depending on the file and folder structure. Do not save other types of files or unnecessary folders on a USB device that has audio files. Compatibility with all encoding/writing softwares, recording devices, and recording media cannot be guaranteed. Incompatible USB device may produce noise or interrupted audio or may not play at all.
To Press Pause playback on the unit. To resume play, press the button again*. Stop playback. Select a folder +/. Select a file /. Find a point in Hold down / a file during playback, and release the button at the desired point. Select Repeat REPEAT repeatedly Play until REP, REP or REP1 appears. * When playing a VBR MP3/WMA/AAC file,
the system may resume playback from a different point.
1 Select the USB function.
Press USB (or FUNCTION repeatedly).
2 Connect a USB device to the

(USB) port.

When the USB device is connected, the display changes as follows: READING 1

Press (or on the unit).

Some time may be needed to start playback when: the folder structure is complex. the memory capacity is excessive. The system can play back to a depth of 8 folders only. This system does not necessarily support all the functions provided in a connected USB device. The playback order for the system may differ from the order of the connected USB device. Folders that have no audio files are skipped. The file formats that this system can play are as follows: MP3: file extension.mp3 WMA: file extension.wma AAC: file extension.m4a,.mp4,.3gp Note that even when file names have the above file extensions, if the actual files differ, playing these files may generate a loud noise which could damage the speaker system and the system may malfunction.
Using optional audio components 1 Prepare the sound source.
2 Turn down the volume. 3 Select the PC function. 4 Start playback.

Using the timers

The system offers two timer functions. If you use both timers, the Sleep Timer has priority. Use buttons on the remote to use the timer functions. Sleep Timer: You can fall asleep to music. This function works even if the clock is not set.

Press SLEEP repeatedly.

If you select AUTO, the system automatically turns off after the current disc, tape or USB device stops or in 100 minutes. If the tape deck is still playing or recording at the set time, the system turns off after the tape deck stops.
Play Timer: You can wake up to CD, tuner or USB device at a preset time. Make sure you have set the clock.
6 Select the sound source. 7 Turn off the system.
1 Prepare the sound source.
Press / repeatedly until the desired sound source appears, and then press ENTER. The display shows the timer settings. Press /. The system turns on 15 seconds before the preset time. If the system is on at the preset time, the Play Timer will not play. Do not operate the system from the time the system turns on until the play starts.
Prepare the sound source, and then press VOLUME +/ to adjust the volume. To start from a specific CD track or audio file, create your own program (page17). Press CLOCK/TIMER SET.
2 Select the timer set mode. 3 Set the play timer.
Press / repeatedly to select PLAY SET, and then press ENTER. ON TIME appears, and the hour indication flashes. Press / repeatedly to set the hour, and then press ENTER. The minute indication flashes. Use the procedure above to set the minutes. OFF TIME appears and the hour indication flashes in the display.

To check the setting

Press CLOCK/TIMER SELECT, press / repeatedly until PLAY SEL appears, and then press ENTER.
4 Set the time to start playback.

To cancel the timer

Repeat the same procedure as above until OFF appears, and then press ENTER.

To change the setting

Start over from step 1. Tip
The Play Timer setting remains as long as the setting is not cancelled manually.
5 Use the same procedure as in
step 4 to set the time to stop playback.

General

The system does not turn on. Is the power cord plugged in? Is the voltage selector set correctly to match the local power line voltage? There is no sound. Are the + and speaker cords shortcircuited? Are you using only the supplied speakers? Is anything blocking the ventilation holes on the back of the system? Sound comes from one channel, or the left and right volumes are unbalanced. Place the speakers as symmetrically as possible. Connect only the supplied speakers. Severe hum or noise. Move the system away from sources of noise. Connect the system to a different wall outlet. Install a noise filter (available separately) to the power cord.

Troubleshooting

1 Make sure the power cord and
speaker cords are correctly and firmly connected. below, and take the indicated corrective action. If the issue persists, contact your nearest Sony dealer.
2 Find your problem in the checklist
If PROTECT appears on the display Immediately unplug the power cord, and check the following items after PROTECT disappears. If your system has a voltage selector, is the voltage selector set to the correct voltage? Are the + and speaker cords short-circuited? Is anything blocking the ventilation holes on the back of the system? After you have checked these above items and found to be all right, reconnect the power cord, and turn on the system. If the issue persists, contact your nearest Sony dealer.
The remote does not function. Remove any obstacles between the remote and the remote sensor on the unit, and position the unit away from fluorescent lights. Point the remote at the systems sensor. Move the remote closer to the system.

CD/MP3 player

The sound skips, or the disc will not play. Wipe the disc clean, and replace it. Move the system to a location away from vibration (for example, on top of a stable stand). Move the speakers away from the system, or place them on separate stands. At high volume, speaker vibration may cause the sound to skip. Play does not start from the first track. Return to Normal Play by pressing PLAY MODE repeatedly until both PGM and SHUF disappear.
Starting playback takes more time than usual. The following discs can increase the time it takes to start playback. a disc recorded with a complicated tree structure a disc recorded in multisession mode a disc that has not been finalized (a disc to which data can be added) a disc that has many folders The disc tray does not open and LOCKED appears. Contact your Sony dealer or local authorized Sony service facility.
Tape deck (MHC-EC99T/EC79T/EC69T only)
The sound exhibits excessive wow or flutter or dropout. Clean the capstans, pinch rollers and tape heads. See Precautions for details.

USB device

Are you using a supported USB device? If you connect an unsupported USB device, the following problems may occur. See Playable USB devices (page 40) for the supported device types. The USB device is not recognized. File or folder names are not displayed on this system. Playback is not possible. The sound skips. There is noise. A distorted sound is output. OVER CURRENT appears. A problem has been detected with the level of electrical current from the (USB) port. Turn off the system and remove the USB device from the (USB) port. Make sure there is no problem with the USB device. If this display pattern persists, contact your nearest Sony dealer. There is no sound. The USB device is not connected correctly. Turn off the system and reconnect the USB device, then turn on the system and check if USB MEMORY appears in the display.

There is noise, skipping, or distorted sound. Turn off the system and reconnect the USB device, then turn on the system. The music data itself contains noise, or the sound is distorted. Noise may have entered during the recording process. Delete the file, and try recording again. The bit rate used when encoding the files was low. Send files encoded with higher bit rates to the USB device. The USB device cannot be connected (USB) port. into the The USB device is being connected backwards. Connect the USB device in the correct orientation. READING is displayed for an extended time, or it takes a long time before playback starts. The reading process can take a long time in the following cases. There are many folders or files on the USB device. e file structure is extremely Th complex. The memory capacity is excessive. The internal memory is fragmented. Thus, we recommend following these guidelines. Total folders on USB device: 100 or less Total files per folder: 100 or less
Erroneous display Send the music data to the USB device again, as the data stored in the USB device may have been corrupted. The character codes that can be displayed by this system are numbers and alphabet only. Other characters are not displayed correctly. The USB device is not recognized. Turn off the system and reconnect the USB device, then turn on the system. Connect the supported USB device (page 40). The USB device does not work properly. Refer to the USB device operation manual for how to deal with this problem. Play does not start. Turn off the system and reconnect the USB device, then turn on the system. Connect the supported USB device (page 40). Press (or on the unit) to start play.
Files cannot be played back. The audio file does not have the extension.mp3,.wma,.m4a,.mp4 or.3gp. The audio file is a multiple track audio file. The file is a video file. The data is not stored in MP3/WMA/ AAC format. The data is stored in WMA lossless/ AAC lossless format. USB storage devices formatted with file systems other than FAT16 or FAT32 are unsupported.* If you use a partitioned USB storage device, only files on the first partition can be played. Playback is possible up to eight levels. The number of folders has exceeded 997. The number of files has exceeded 999. Files that are encrypted or protected by passwords, etc. cannot be played back.

* This system supports FAT16 and FAT32, but some USB storage devices may not support all of these FAT. For details, see the operation manual of each USB storage device or contact the manufacturer.
Severe hum or noise, or stations cannot be received. (TUNED or ST flashes on the display.) Connect the antenna properly. Find a location and an orientation that provide good reception, and then set up the antenna again. Keep the antennas away from the speaker cords, the power cord and the USB cable to avoid picking up noise. Consult your nearest Sony dealer if the supplied AM antenna has come off the plastic stand. Turn off nearby electrical equipment.
To improve tuner reception
Turn off the CD player/USB device power by using the CD/USB power management function. By default, the CD/USB power is turned on. Use buttons on the unit to turn off the CD player/USB device power.
1 Press CD to select the CD function. 2 Press / to turn off the system. 3 After STANDBY stops flashing, press
DISPLAY to display the clock and then press / while holding down. CD/USB PWR OFF appears. With the CD player/USB device power turned off, access time is increased. In addition, when the TUNER function is selected, power is not supplied to the USB device, so it is not recognized even if connected. To turn on the CD player/USB device power, repeat the procedure until CD/USB PWR ON appears.
To change the AM tuning interval
The AM tuning interval is factory-preset to 9 kHz or 10 kHz (for some areas: this function is not available on the European and Russian models). Use buttons on the unit to change the AM tuning interval.
1 Tune in any AM station, and then

turn off the system.

2 Press DISPLAY to display the clock. 3 While holding down TUNING +, press
/. All the AM preset stations are erased. To reset the interval to the factory preset, repeat the procedure.
To reset the system to factory settings
If the system still does not operate properly, reset the system to factory settings. You cannot reset the system to factory settings in Power Saving Mode. Use buttons on the unit to reset the unit to its factory default settings. cord, and then turn on the system.

Messages

One of the following messages may appear or flash in the front panel display during operation. CANNOT LOCK The system cannot be locked after you have done the procedure of When carrying this system. COMPLETE The radio preset operation ended normally. DEVICE ERROR The USB device could not be recognized or an unknown device is connected (page 40). FULL You tried to program more than 25 tracks or files (steps). LOCKED The disc tray does not open. Contact your nearest Sony dealer.

1 Disconnect and reconnect the power 2 Press , CD, and / at the same
time. All user-configured settings, such as preset radio stations, timer, and the clock, are deleted.
No DEVICE No USB device is connected or the connected USB device has been stopped. NO DISC There is no disc in the player, or you have loaded a disc that cannot be played. NO STEP All of the programmed tracks have been erased. NO TAB (MHC-EC99T/EC79T/EC69T only) You cannnot record the tape because the tab has been removed from the tape. NO TRACK Playable file on the USB device is not loaded in the system. NOT USED You tried to perform a specific operation under conditions where that operation is prohibited. OVER You have reached the end of the disc while pressing during playback or pause. OVER CURRENT An over current from the was detected.

(USB) port

PROTECT The following causes can be considered: The voltage selector may not be set to the correct local power line voltage. Speaker cords may be short-circuited. The ventilation holes may be blocked. See If PROTECT appears on the display (page 27) to check what to do if this message appears. PUSH SELECT You tried to set the clock or timer during timer operation. PUSH STOP You have pressed the buttons whose operation is only possible when playback is stopped. READING The system is reading information of the disc. Some buttons are not available. The system is recognizing the USB device. REMOVED The USB device has been removed. SET CLOCK You tried to select the timer when the clock is not set.
SET TIMER You tried to select the timer when the Play Timer is not set. TIME NG The Play Timer start and end times are set to the same time.
Display examples Display indicates 2 (two) 5 (five) 6 (six) 8 (eight) 0 (zero) A B D G H K M O Q R S Z | $ % ,. ? @ ^

Precautions

Discs that this system CAN play Audio CD CD-R/CD-RW (audio data/MP3 files) Discs that this system CANNOT play CD-ROM CD-R/CD-RW other than those recorded in music CD format or MP3 format conforming to ISO9660 Level 1/Level 2, Joliet CD-R/CD-RW recorded in multisession that have not ended by closing the session CD-R/CD-RW of poor recording quality, CD-R/CD-RW that have scratches or are dirty, or CD-R/CDRW recorded with an incompatible recording device CD-R/CD-RW which is finalized incorrectly Discs containing files other than MPEG 1 Audio Layer-3 (MP3) files Discs of non-standard shape (for example, heart, square, star) Discs that have adhesive tape, paper, or sticker attached to them Rental or used discs with attached seals where the glue extends beyond the seal Discs that have labels printed using ink that feels tacky when touched
Notes on discs Before playing, wipe the disc with a cleaning cloth from the centre out to the edge. Do not clean discs with solvents, such as benzine thinner, or commercially available cleaners or anti-static spray intended for vinyl LPs. Do not expose discs to direct sunlight or heat sources such as hot air ducts, nor leave it in a car parked in direct sunlight. On safety Completely disconnect the power cord (mains lead) from the wall outlet (mains) if it is not going to be used for an extended period of time. When unplugging the unit, always grip the plug. Never pull the cord itself. Should any solid object or liquid get into the system, unplug the system, and have it checked by qualified personnel before operating it again. AC power cord must be changed only at the qualified service shop.

Front Speaker: Power output (rated): Low channel 50 W + 50 W (at 8 , 1 kHz, 1% THD) High channel 50 W + 50 W (at 8 , 8 kHz, 1% THD) RMS output power (reference): Low channel 65 W + 65 W (per channel at 8 , 1 kHz, 10% THD) High channel 65 W + 65 W (per channel at 8 , 8 kHz, 10% THD) Subwoofer: RMS output power (reference): 90 W (at 4 , 80 Hz, 10% THD)

MHC-EC79/EC79T

Power output (rated): Low channel 55 W + 55 W (at 8 , 1 kHz, 1% THD) High channel 55 W + 55 W (at 8 , 8 kHz, 1% THD) RMS output power (reference): Low channel 75 W + 75 W (per channel at 8 , 1 kHz, 10% THD) High channel 75 W + 75 W (per channel at 8 , 8 kHz, 10% THD)

USB section

Supported bit rate: MP3 (MPEG 1 Audio Layer-3)/ WMA/AAC: 32320 kbps, VBR Sampling frequencies: MP3 (MPEG 1 Audio Layer-3)/ WMA/AAC: 32/44.1/48 kHz (USB) port: Maximum current: 500 mA

CD player section

MHC-EC69/EC69T
Power output (rated): 50 W + 50 W (at 6 , 1 kHz, 1% THD) RMS output power (reference): 70 W + 70 W (per channel at 6 , 1 kHz, 10% THD)

Inputs

PC IN (stereo mini jack): Sensitivity 800 mV, impedance 22kilohms
System: Compact disc and digital audio system Laser Diode Properties Emission Duration: Continuous Laser Output*: Less than 44.6W *This output is the value measurement at a distance of 200mm from the objective lens surface on the Optical Pick-up Block with 7mm aperture. Frequency response: 20 Hz 20 kHz Signal-to-noise ratio: More than 90 dB Dynamic range: More than 88 dB

Outputs

PHONES (stereo mini jack): accepts headphones with an impedance of 8 or more SPEAKER: impedance MHC-EC99/EC99T/EC79/EC79T: 8 MHC-EC69/EC69T: 6 SUBWOOFER (MHC-EC99/EC99T only): impedance 4
Tape deck section (MHC-EC99T/EC79T/ EC69T only)
Recording system: 4-track 2-channel, stereo

Tuner section

FM stereo, FM/AM superheterodyne tuner Antenna: FM lead antenna AM loop antenna FM tuner section: Tuning range: 87.5 108.0 MHz (50 kHz step) Intermediate frequency: 10.7 MHz AM tuner section: Tuning range European and Russian models: 531 1,602 kHz (with 9 kHz tuning interval) Latin American models: 530 1,710 kHz (with 10 kHz tuning interval) 531 1,710 kHz (with 9 kHz tuning interval) Other models: 531 1,602 kHz (with 9 kHz tuning interval) 530 1,610 kHz (with 10 kHz tuning interval) Intermediate frequency: 450 kHz
Front Speaker (SS-EC69) for MHCEC69 (except for European model)/ EC69T
Speaker system: 2-way 2-driver speaker system, Bass reflex Speaker unit: Woofer: 160 mm, cone type Tweeter: 40 mm, horn type Rated impedance: 6 Dimensions (w/h/d): Approx. 215 mm Mass: Approx. 2.6 kg
Front Speaker (SS-EC69i) for MHCEC69 (European model only)

Standby power consumption: 0.5 W Halogenated flame retardants are not used in the certain printed wiring boards.
Verified Sony IC Recorder (as of December 2008)
Product name Model name IC Recorder ICD-SX57 / SX67 / SX77 ICD-UX71 / UX81 / UX91 ICD-SX68 / SX78 / SX88

Note on Walkman

When connecting a Walkman to the system, be sure to connect after the display Creating Library or Creating Database on the Walkman has disappeared.
Verified Sony USB storage device (as of December 2008)
Product name Model name MICROVAULT USM512JX / 1GJX / 2GJX / 4GJX USM1GL / 2GL / 4GL / 8GL / 16GL USM1GLX / 2GLX / 4GLX / 8GLX / 16GLX Notes
The unit is unable to read data in NTFS format. The unit is unable to read data other than that saved in the first partition of a hard disk drive. Do not use USB devices other than these USB devices. Operation of models not listed here is not guaranteed. Operation may not always be ensured even when using these USB devices. Some of these USB devices may not be available for purchase in certain areas. When formatting the above models, be sure to format using the model itself or the dedicated formatting software for that model.