Tape Play

Loading a tape.. 18 Playing a tape.. 18

Optional Components

Hooking up optional components. 29 Transmitter.. 30 (MHC-GX750 only)

Tape Recording

Recording your favorite CD tracks on a tape.. 19 CD-TAPE Synchro Recording Recording on a tape manually.. 20 Manual Recording

Troubleshooting

Problems and remedies.. 33 Messages.. 36

Sound Adjustment

Adjusting the sound.. 21 Using the sub woofer.. 21 (MHC-GX750/GX450/RG551S/ RG444S/RX550 only) Selecting the sound effect. 22 Adjusting the graphic equalizer and storing.. 22 4GB

Additional Information

Precautions.. 37 Specifications.. 38 List of button locations and reference pages.. 44

How to use this manual

This manual mainly explains operations using the remote, but the same operations can also be performed using the buttons on the unit having the same or similar names.
Discs that this system cannot play
CD-ROMs CD-Rs/CD-RWs other than those recorded in the following formats: music CD format MP3 format that conforms to ISO96601) Level 1/Level 2, Joliet or Multi Session2) A disc that has a non-standard shape (e.g., card, heart). A disc with paper or stickers on it. A disc that has the adhesive, cellophane tape, or a sticker still left on it.

Playable discs

You can play back the following discs on this system. Other discs cannot be played back.

List of playable discs

Format of discs Disc logo

Audio CDs

CD-R/CD-RW (audio data/MP3 files*)
* MHC-GX750/GX450/RG555/RG551S/RG444S/ RG441/RG333/RG222/RG221/RX550 only
ISO9660 Format The most common international standard for the logical format of files and folders on a CD-ROM. There are several specification levels. In Level 1, file names must be in the 8.3 format (no more than eight characters in the name, no more than three characters in the extension.MP3) and in capital letters. Folder names can be no longer than eight characters. There can be no more than eight nested folder levels. Level 2 specifications allow file names and folder names up to 31 characters long. Each folder can have up to 8 trees. For Joliet in the expansion format (file and folder names can have up to 64 characters) make sure of the contents of the writing software, etc. Multi Session This is a recording method that enables adding of data using the Track-At-Once method. Conventional CDs begin at a CD control area called the Lead-in and end at an area called Lead-out. A Multi Session CD is a CD having multiple sessions, with each segment from Lead-in to Lead-out regarded as a single session. CD-Extra: This format records audio (audio CD data) on the tracks in session 1 and data on the tracks in session 2. Mixed CD: This format records data on the first track and audio (audio CD data) on the second and subsequent tracks of a session.

continued

Notes on CD-R and CD-RW
Some CD-Rs or CD-RWs cannot be played on this system depending upon the recording quality or physical condition of the disc, or the characteristics of the recording device. Furthermore, the disc will not play if it has not been correctly finalized. For more information, see the operating instructions for the recording device. Discs recorded on CD-R/CD-RW drives may not be played back because of scratches, dirt, recording condition or the drivers characteristics. CD-R and CD-RW discs recorded in multisession that have not ended by closing the session are not supported. The system may be unable to play MP3 format files that do not have the.MP3 extension. Attempting to play non-MP3 format files that have the.MP3 extension may result in noise or malfunction. With formats other than ISO9660 level 1 and 2, folder names or file names may not be displayed correctly. The following discs take a longer time to start playback. a disc recorded with complicated tree structure. a disc recorded in Multi Session. a disc to which data can be added (nonfinalized disc).
Music discs encoded with copyright protection technologies
This product is designed to playback discs that conform to the Compact Disc (CD) standard. Recently, various music discs encoded with copyright protection technologies are marketed by some record companies. Please be aware that among those discs, there are some that do not conform to the CD standard and may not be playable by this product.
Cautions when playing a disc that is recorded in Multi Session
If the disc begins with a CD-DA session, it is recognized as a CD-DA (audio) disc, and playback continues until an MP3 session is encountered. If the disc begins with an MP3 session, it is recognized as an MP3 disc, and playback continues until a CD-DA (audio) session is encountered. The playback range of an MP3 disc is determined by the tree structure of files produced by analyzing of the disc. A disc with a mixed CD format will be recognized as a CD-DA (audio) disc.

Hooking up the system

Perform the following procedures 1 to 5 to hook up your system using the supplied cords and accessories. A model equipped with a sub woofer is used for illustration purpose.

Playing repeatedly

Repeat Play
You can play all the tracks or a single track on a disc repeatedly. MP3 audio tracks cannot be played on MHC-GX250, MHC-RG121 and MHC-RG100.
Press REPEAT until REP or REP1 appears.
REP: For all the tracks on a disc up to five times. REP1: For a single track only.

To cancel Repeat Play

Press REPEAT repeatedly until both REP and REP1 disappear.
You cannot select REP and ALL DISCS SHUF at the same time. When you select REP1, that track is repeated endlessly until REP1 is canceled.
Creating your own program

Program Play

You can make a program of up to 25 steps from all the discs in the order you want to play them. You can synchro record the programmed tracks onto a cassette tape (page 19). MP3 audio tracks cannot be played on MHC-GX250, MHC-RG121 and MHC-RG100.
Program additional tracks.

To program Repeat steps

Other tracks on the 4 and 5 same disc Other tracks on other discs 3 to 5

Program Play starts.

Press CD (or FUNCTION repeatedly) to switch the function to CD. Press PLAY MODE repeatedly in stop mode until PGM appears. Press DISC SKIP (or DISC or DISC SKIP/EX-CHANGE on the unit) to select a disc. Press. or > repeatedly (or turn l L on the unit) until the desired track number appears.
Cancel Program Play Clear a track from the end
Press PLAY MODE repeatedly in stop mode until PGM disappears. Press CLEAR in stop mode.
When programming the MP3 audio tracks, press ALBUM or + to select album, then press. or > repeatedly (or turn l L on the unit) until the desired track number appears.
Disc tray number Selected track number
The program you made remains after Program Play finishes. To play the same program again, press CD (or FUNCTION repeatedly) to switch the function to CD, then press N. However, the program is cleared when you open the disc tray. . appears when the total CD program time exceeds 100 minutes, or when you select a CD track whose number is 21 or over, or when you select an MP3 audio track.
Total playing time (including selected track)

Press ENTER.

The track is programmed. The program step number appears, followed by the total playing time.
Press or + (or TUNING or + on the unit) repeatedly to select the desired preset number. Press ENTER. Repeat steps 2 through 7 to store other stations.

Presetting radio stations
You can preset up to 20 FM stations and 10 AM stations. You can then tune in any of those stations simply by selecting the corresponding preset number.

Manual tuning preset

You can manually tune in and store the radio frequency of the desired stations.

Automatic tuning preset

You can automatically tune in all of the stations that can be received in your area and then store the radio frequency of the desired stations.
Press TUNER BAND (or FUNCTION repeatedly) to switch the function to tuner. Press TUNER BAND repeatedly to select FM or AM. Press TUNING MODE repeatedly until AUTO and PRESET disappear from the display. Press or + (or TUNING or + on the unit) repeatedly to tune in the desired station. Press TUNER MEMORY.
Press TUNER BAND (or FUNCTION repeatedly) to switch the function to tuner. Press TUNER BAND repeatedly to select FM or AM. Press TUNING MODE repeatedly until AUTO appears in the display. Press or + (or TUNING or + on the unit).

A preset number appears.

The frequency changes as the system scans for a station. Scanning stops automatically when a station is tuned in. At that time, TUNED and STEREO (for an FM stereo program) appear.

Do this

If TUNED does not appear and the scanning does not stop
Tune in a station with a weak signal Set another station to the existing preset number
Set the frequency of the desired radio station as described in steps 3 through 8 of Manual tuning preset (page 15).
Follow the procedure described in Manual tuning preset (page 15). Start over from step 2. After step 5, press or + (or TUNING or + on the unit) repeatedly to select the preset number you want to store the other station.

Press TUNER MEMORY.

Preset number
To change the AM tuning interval (except for European, Russian and Saudi Arabian models)
The AM tuning interval is factory-preset to 9 kHz (or 10 kHz for some areas). To change the AM tuning interval, tune in any AM station first, then turn off the system. While holding TUNING MODE on the unit, press ?/1 on the unit. When you change the interval, all the AM preset stations are erased. To reset the interval, repeat the same procedure.

Receiving RDS broadcasts

Simply select a station from the FM band.
When you tune in a station that provides RDS services, the station name appears in the display.
To check the RDS information
Each time you press DISPLAY, the display changes cyclically as follows: Station name1) t Preset number2) and frequency t Clock display t Effect status
If the RDS broadcast is not properly received, the station name may not appear in the display. Preset number is displayed only if you preset radio stations (page 15).

Playing a tape

You can use TYPE I (normal) tape.

Loading a tape

For MHC-RG555
Press TAPE A/B repeatedly to select deck A or B. Press PUSH Z. Load a recorded/recordable tape in deck A or B with the side you want to play/record facing forward.
Load a tape. Press PLAY MODE repeatedly to select g to play one side. Select j1) to play both sides.
To play both decks in succession, press PLAY MODE repeatedly until RELAY (Relay Play)2) appears in the display.
With the side you want to play/record facing forward.
Press N (or hH on the unit).
The tape starts playing. Press the button again to play the reverse side.
The tape deck stops automatically after repeating the sequence five times. Relay Play always follows this cyclic sequence up to five times, then stops: Deck A (front side) t Deck A (reverse side) t Deck B (front side) t Deck B (reverse side)

For other models

Load a tape.
To play both decks in succession, press PLAY MODE repeatedly until RELAY (Relay Play)* appears in the display.

The tape starts playing.

* After the playback of the front side of deck A, deck B plays the front side, then stops.
Stop play Pause Fast-forward or rewind Remove a tape
Press x. Press X. Press again to resume play. Press m or M. Press PUSH Z on the unit.
Recording your favorite CD tracks on a tape
CD-TAPE Synchro Recording
You can record a whole CD on a tape. You can use TYPE I (normal) tape. The recording level is adjusted automatically. Use buttons on the unit for the operation.
Searching for the beginning of the current or the next track (AMS)1) To go forward

Press one of the following buttons to select the desired source to record.
CD: To record from this systems CD player. TAPE A/B: To record from this systems tape deck A. TUNER/BAND: To record from this systems tuner. GAME: To record from the connected video game machine to GAME INPUT AUDIO L/R jacks. VIDEO/MD*: To record from the connected VCR or MD to VIDEO/MD IN jacks.

* MHC-RG555 only

Press REC PAUSE/START, then start playing the desired source to record.
You cannot listen to other sources while recording.

Adjusting the sound

You can reinforce the bass and create a more powerful sound.
Press GROOVE on the unit.
For MHC-RG555, when you record on both sides, be sure to start from the front side. If you start from the reverse side, recording stops at the end of the reverse side. For recording from the tuner: If noise is heard while recording from the tuner, move the respective antenna to reduce the noise.
Each time you press the button, the display changes cyclically as follows: GROOVE ON* t GROOVE OFF
* The volume switches to power mode, the equalizer curve changes, and GROOVE lights up.

Using the sub woofer

(MHC-GX750/GX450/RG551S/RG444S/ RX550 only)
You can use the sound of the sub woofer to suit the sound source.
Press SUB WOOFER ON/OFF on the sub woofer.
The indicator lights up while the sub woofer turns on. Press the button again to turn off the sub woofer.
You can use VOLUME +/ (or VOLUME control on the unit) to adjust the volume of the sub woofer linked to the front speakers.
Selecting the sound effect
Selecting the effect from the music menu
Press EQ (or PRESET EQ on the unit) repeatedly to select the preset you desire.
Adjusting the graphic equalizer and storing
You can adjust the sound by raising or lowering the levels of specific frequency ranges, then store up to three personal files (P FILE) in the memory. Before operation, first select the audio emphasis you want for your basic sound. Use buttons on the unit for the operation.
The preset name appears in the display. See the chart Sound effect options.
To cancel the sound effect
Press EFFECT ON/OFF on the unit.

Sound effect options

SURR appears if you select an effect with surround effects.

EQ Effect

Press EQ BAND repeatedly to select a frequency band, then turn EQ + to adjust the level.
Frequency band Frequency level

Microphone does not function while the tape deck is performing the AMS operation (page 19).
Turn MIC LEVEL on the unit to MIN to turn down the microphone control level. Connect an optional microphone to MIC. Start playing the music. Adjust the microphone volume by turning MIC LEVEL on the unit.
If acoustic feedback (howling) occurs, move the microphone away from the speakers or change the direction of the microphone. If you want to record your voice through the microphone only, you can do so by selecting the CD function and not playing a disc. When high level sound signals are input, the system automatically adjusts the recording level to prevent distortion of the recorded sound signal (Auto Level Control function).

After you have finished

Turn MIC LEVEL on the unit to MIN and disconnect the microphone from MIC.
Mixing and recording sounds
You can mix sounds by playing one of the components and singing or speaking into a microphone (not supplied). The mixed sound can be recorded on a tape. Use buttons on the unit for the operation.
Prepare the source you want to mix. Then, load a recordable tape in deck B and press TAPE A/B repeatedly to select deck B. Press PLAY MODE repeatedly to select g to record on one side. Select j (or RELAY) to record on both sides. Press the function button of the source you want to record (e.g., CD).
When you want to record from TAPE A, press TAPE A/B repeatedly until TAPE A is selected.
Press REC PAUSE/START, and then start singing, speaking or playing the desired source.

Waking up to music

Play Timer
You can wake up to music at a preset time. Make sure you have set the clock (see Setting the clock on page 10). Use buttons on the remote for the operation.

Falling asleep to music

Sleep Timer
You can set the system to turn off after a certain time, so that you can fall asleep to music.

Press SLEEP.

Prepare the sound source you want to play.
Each time you press the button, the minute display (the turn-off time) changes cyclically as follows: AUTO* t 90MIN t 80MIN t 70MIN t t 10MIN t OFF
* The system automatically turns off in 100 minutes or after the current disc or tape finishes playing.
CD: Load a disc. To start from a specific track, make a program (see Creating your own program on page 14). Tape: Load a tape with the side you want to play facing forward. Tuner: Tune in the preset radio station (see Listening to the radio on page 16).

The system turns on 15 seconds before the preset time.
Set the time to stop recording following the same procedure as step 4.
The type of timer (REC TIMER), the start time, the stop time, and the preset radio station to be recorded (e.g., TUNER FM 5) appear in turn, before the original display returns.
Load a recordable tape into deck B. Press ?/1 to turn off the system.
repeatedly until REC SELECT appears, then press ENTER. Change the setting Cancel the timer Start over from step 1.

Turning off the display

Power Saving Mode
The demonstration display (display window and buttons lighting and flashing even when the system power is off) and the clock display can be turned off to minimize the amount of power consumed during standby (Power Saving Mode).
Press DISPLAY repeatedly while the system is off until the demonstration display or the clock display disappears. To cancel Power Saving Mode
You cannot activate the Play Timer and the Rec Timer at the same time. If you use the Rec Timer, the Play Timer and the Sleep Timer at the same time, the Sleep Timer has priority. If the system is on at the preset time, the Rec Timer will not be activated. The volume is reduced to minimum during recording.
Press DISPLAY while the system is off. Each time you press the button, the display switches cyclically as follows: Demonstration display t Clock display* t No display (Power Saving Mode)
* The clock is displayed only if you set the clock.
You cannot perform the following operations in Power Saving Mode. setting the clock changing the AM tuning interval (except for European, Russian and Saudi Arabian models) turning on the system by pressing the function buttons (e.g., CD)
The timer continues to operate in Power Saving Mode. ?/1 indicator lights up even in Power Saving Mode.
Viewing information about the disc in the display
You can check the playing time and remaining time of the current track or that of the disc.
x When a CD/MP3 is in Program Play mode
The last track number of the program and the total playing time t Total track number of the program (for five seconds) t Volume label* t Clock display (for eight seconds) t Effect status
* For discs with MP3 audio tracks
Checking the remaining time and titles (CD/MP3)
Press DISPLAY during Normal Play.
Checking the station name (TUNER)
Press DISPLAY while listening to the radio.
Each time you press the button, the display changes cyclically as follows: Current track number and elapsed playing time t Current track number and remaining time1) t Remaining time of the disc2) t Track title (disc with MP3 audio tracks3) only) t Album name (disc with MP3 audio tracks only) t Clock display (for eight seconds) t Effect status
Each time you press the button, the display changes cyclically as follows: Station name1) t Preset number2) and frequency t Clock display (for eight seconds) t Effect status

Use a video cable (not supplied) to connect the video input of TV to this jack.
From the audio output of the VCR or MD deck VCR or MD deck
The video game machine image may appear on the TV screen even if the system is turned off. See Selecting the surround effect on page 23 for video game sound effects. If you press GAME on the unit while the system is off, the system turns on, the function switches to GAME, and the equalizer also switches to GAME EQ. If you press GAME on the unit while the system is on, the function switches to GAME and the equalizer automatically switches to GAME EQ in the same manner.

Transmitter

(MHC-GX750 only)
Hooking up the transmitter
Set the transmitter by the following procedures.
Listening to audio from a connected component (MHC-RG555 only)
Select either AUDIO IN A or AUDIO IN B hookup depending on the jack type of the optional component you want to connect the transmitter to. If noise occurs when the transmitter is connected to the headphones jack of your TV or VCR, set the NOISE FILTER switch on the transmitter to ON.
Listening to a connected VCR
Connect the audio cords. See Hooking up optional components on page 29. Press VIDEO/MD. Start playing the connected component.

OFF ON NOISE FILTER

DC IN 9V

AUDIO IN

CHANNEL
to AUDIO IN B jack Right channel (red)
to AUDIO IN A jacks Left channel (white)
Listening to a connected MD deck
Connect the audio cords. See Hooking up optional components on page 29. Press VIDEO/MD. Hold down VIDEO/MD and press ?/1. This switches the VIDEO function to MD. Once you enable the MD function, just press VIDEO/MD.
Connecting cord (supplied) Left channel (white) Right channel (red)
Unimatch plug adaptor (not supplied)
If you cannot select MD when you press VIDEO/ MD, press ?/1 while holding down VIDEO/MD when the system is on. VIDEO will be switched to MD. To return to VIDEO, do the same procedure. When you connect a VIDEO CD deck, set to MD.
to LINE OUT or REC OUT jack Optional Components (TV, VCR, Personal computer, etc.)
to headphones (stereo phone jack) or LINE OUT jack (stereo mini jack)
Connect the transmitter to a wall outlet using the supplied AC power adaptor.
The effective areas of the transmitter
Wireless system that allows you to use your system free from the restriction of speaker cords. The optimum signal reception range is up to approximately 30.5 m (100 feet) without the system picking up some interference. However, the distance may be reduced according to the surroundings and environment. If the system picks up some noise while using it within the above mentioned distance, reduce the distance between the transmitter unit and the main unit, or select another channel.

Make sure the power cord and speaker cords are correctly and firmly connected. Find your problem in the troubleshooting checklist below and take the indicated corrective action.
If the problem persists after doing all of the above, consult your nearest Sony dealer.
When the ?/1 indicator flashes
Immediately unplug the power cord and check the following items. If your system has a voltage selector, is the voltage selector set to the correct voltage? Check the voltage for your region, then make sure the voltage selector is set correctly. Are the + and speaker cords shortcircuited? Are you using only the prescribed speakers? Is anything blocking the ventilation holes on the rear of the system? Check all the above items and fix any problems found. After ?/1 indicator stops flashing, reconnect the power cord and turn on the system. If the indicator still flashes, or if the cause of the problem cannot be found even after checking all the above items, consult your nearest Sony dealer.

Troubleshooting 33GB

The remote does not function. Remove the obstacle. Move the remote closer to the system. Point the remote at the systems sensor. Replace the batteries (R6/size AA). Locate the system away from the fluorescent light. There is acoustic feedback. Reduce the volume. For MHC-RG555, move the microphone away from the speakers or change the direction of the microphone. The color irregularity on a TV screen persists. Turn off the TV set once, then turn it on after 15 to 30 minutes. If the color irregularity still persists, place the speakers farther away from the TV set. The sound from the connected source is distorted (MHC-RG555 only). If VIDEO appears in the display when you press VIDEO/MD on the unit, switch the display to MD (see Listening to audio from a connected component (MHC-RG555 only) on page 30).
Play does not start. Open the disc tray and check whether a disc is loaded. Wipe the disc clean (page 37). Replace the disc. Place the disc that this system can play (page 5). Place the disc correctly. Place the disc in the tray with the label side up. Remove the disc and wipe away the moisture on the disc, then leave the system turned on for a few hours until the moisture evaporates. Press N to start play. The sound skips. Wipe the disc clean (page 37). Replace the disc. Try moving the system to a place without vibration (e.g., on top of a stable stand). Try moving the speakers away from the system, or placing them on separate stands. When you listen to a track with bass sounds at high volume, the speaker vibration may cause the sound to skip. Play does not start from the first track. Press PLAY MODE repeatedly until both PGM and SHUF disappear to return to Normal Play. MP3 audio track cannot be played back.* Recording was not performed according to the ISO9660 level 1 or level 2 format or Joliet in the expansion format. The MP3 audio track does not have the extension.MP3. The data is not stored in MP3 format. Discs containing files other than MPEG 1 Audio Layer-3 files cannot be played. MP3 audio tracks take longer to play back than others.* After the system reads all tracks on the discs, playback may take more time than usual if: the number of albums or tracks on the disc is very large. the album and track organization structure is very complex. The album name, track title and ID3 tag do not appear correctly.* Use a disc that conforms with ISO9660 level 1, level 2 or Joliet in the expansion format. The disc ID3 tag is not ver. 1 nor ver. 2. * MHC-GX750/GX450/RG555/RG551S/RG444S/ RG441/RG333/RG222/RG221/RX550 only

Cleaning the cabinet

Clean the cabinet, panel and controls with a soft cloth slightly moistened with mild detergent solution. Do not use any type of abrasive pad, scouring powder or solvent such as thinner, benzine or alcohol.

Specifications

Main unit Amplifier section AUDIO POWER SPECIFICATIONS (MHC-GX750/GX450/GX250/RX550 USA models only) MHC-GX750/RX550 POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
To save a tape permanently
To prevent a tape from being accidentally recorded over, break off the cassette tab from side A or B as illustrated.
Break off the cassette tab
If you later want to reuse the tape for recording, cover the broken tab with adhesive tape.
With 6 ohm loads, both channels driven, from 120 10,000 Hz: rated 160 watts per channel minimum RMS power, with no more than 10% total harmonic distortion from 250 milliwatts to rated output.
MHC-GX450 POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
Before placing a cassette in the tape deck
Take up any slack in the tape. Otherwise, the tape may get entangled in the parts of the tape deck and become damaged.
When using a tape longer than 90 minutes
The tape is very elastic. Do not change the tape operations such as play, stop, and fast-winding frequently. The tape may get entangled in the tape deck.
With 6 ohm loads, both channels driven, from 120 10,000 Hz: rated 125 watts per channel minimum RMS power, with no more than 10% total harmonic distortion from 250 milliwatts to rated output.
MHC-GX250 POWER OUTPUT AND TOTAL HARMONIC DISTORTION:

Cleaning the tape heads

Clean the tape heads after every 10 hours of use. Be sure to clean the tape heads before you start an important recording or after playing an old tape. Use a separately sold dry-type or wet-type cleaning cassette. For details, refer to the instructions of the cleaning cassette.
With 6 ohm loads, both channels driven, from 120 10,000 Hz: rated 140 watts per channel minimum RMS power, with no more than 10% total harmonic distortion from 250 milliwatts to rated output.
North American models: MHC-GX750/RX550
Front speaker Continuous RMS power output (reference): 160 + 160 watts (6 ohms at 1 kHz, 10% THD) Total harmonic distortion less than 0.07% (6 ohms at 1 kHz, 80 W) Sub woofer Continuous RMS power output (reference): 180 watts (6 ohms at 50 Hz, 10% THD) Total harmonic distortion less than 0.07% (6 ohms at 50 Hz, 90 W)

Demagnetizing the tape heads
Demagnetize the tape heads and the metal parts that have contact with the tape after every 20 to 30 hours of use with a separately sold demagnetizing cassette. For details, refer to the instructions of the demagnetizing cassette.

MHC-GX450

Front speaker Continuous RMS power output (reference): 125 + 125 watts (6 ohms at 1 kHz, 10% THD) Total harmonic distortion less than 0.07% (6 ohms at 1 kHz, 60 W) Sub woofer Continuous RMS power output (reference): 150 watts (6 ohms at 50 Hz, 10% THD) Total harmonic distortion less than 0.07% (6 ohms at 50 Hz, 75 W)

MHC-RG222/RG121

DIN power output (rated): 50 + 50 watts (6 ohms at 1 kHz, DIN) Continuous RMS power output (reference): 65 + 65 watts (6 ohms at 1 kHz, 10% THD) Music power output (reference): 130 + 130 watts (6 ohms at 1 kHz, 10% THD)

MHC-RG100

DIN power output (rated): 15 + 15 watts (6 ohms at 1 kHz, DIN) Continuous RMS power output (reference): 20 + 20 watts (6 ohms at 1 kHz, 10% THD) Music power output (reference): 40 + 40 watts (6 ohms at 1 kHz, 10% THD)

MHC-GX250

Continuous RMS power output (reference): 140 + 140 watts (6 ohms at 1 kHz, 10% THD) Total harmonic distortion less than 0.07% (6 ohms at 1 kHz, 70 W)
Other models: European and Russian models: MHC-RG444S
Front speaker DIN power output (rated): 100 + 100 watts (6 ohms at 1 kHz, DIN) Continuous RMS power output (reference): 120 + 120 watts (6 ohms at 1 kHz, 10% THD) Music power output (reference): 240 + 240 watts (6 ohms at 1 kHz, 10% THD) Sub woofer DIN power output (rated): 100 watts (6 ohms at 60 Hz, DIN) Continuous RMS power output (reference): 120 watts (6 ohms at 50 Hz, 10% THD) Music power output (reference): 240 watts (6 ohms at 50 Hz, 10% THD)

MHC-RG555

The following measured at AC 120, 127, 220, 240 V 50/60 Hz DIN power output (rated): 120 + 120 watts (6 ohms at 1 kHz, DIN) Continuous RMS power output (reference): 150 + 150 watts (6 ohms at 1 kHz, 10% THD)

MHC-RG551S

MHC-RG333
DIN power output (rated): 100 + 100 watts (6 ohms at 1 kHz, DIN) Continuous RMS power output (reference): 125 + 125 watts (6 ohms at 1 kHz, 10% THD) Music power output (reference): 250 + 250 watts (6 ohms at 1 kHz, 10% THD)
The following measured at AC 120, 127, 220, 240 V 50/60 Hz Front speaker DIN power output (rated): 100 + 100 watts (6 ohms at 1 kHz, DIN) Continuous RMS power output (reference): 120 + 120 watts (6 ohms at 1 kHz, 10% THD) Sub woofer DIN power output (rated): 100 watts (6 ohms at 50 Hz, DIN) Continuous RMS power output (reference): 120 watts (6 ohms at 50 Hz, 10% THD)

Frequency response Wavelength Signal-to-noise ratio Dynamic range

Speaker

North American models: Front speaker SS-RG555 for MHC-GX750/ RX550
Speaker system Speaker units Woofer: Sub woofer: Tweeter: Nominal impedance Dimensions (w/h/d) Mass 3-way, 3-unit, bass-reflex type 15 cm, cone type 15 cm, cone type 5 cm, cone type 6 ohms Approx. 295 mm Approx. 5.1 kg net per speaker
European and Russian models: Front speaker SS-RG444 for MHC-RG444S/ RG222
Speaker system Speaker units Woofer: Sub woofer: Tweeter: Nominal impedance Dimensions (w/h/d) Mass 3-way, 3-unit, bass-reflex type 13 cm, cone type 13 cm, cone type 5 cm, cone type 6 ohms Approx. 235 mm Approx. 3.7 kg net per speaker
Sub woofer SS-WG450 for MHC-RG444S
Speaker system Speaker units Woofer: Nominal impedance Dimensions (w/h/d) Mass Bass-reflex type 20 cm, cone type 6 ohms Approx. 365 mm Approx. 5.7 kg
Sub woofer SS-WG750 for MHC-GX750/ RX550
Speaker system Speaker units Woofer: Nominal impedance Dimensions (w/h/d) Mass Bass-reflex type 20 cm, cone type 6 ohms Approx. 365 mm Approx. 7.5 kg
Front speaker SS-RG555 for MHC-RG333
Speaker system Speaker units Sub Woofer: Woofer: Tweeter: Nominal impedance Dimensions (w/h/d) Mass 3-way, 3-unit, bass-reflex type 15 cm, cone type 15 cm, cone type 5 cm, cone type 6 ohms Approx. 295 mm Approx. 5.1 kg net per speaker
Front speaker SS-RG444 for MHC-GX450/ GX250
Front speaker SS-RG121 for MHC-RG121/ RG100
Speaker system Speaker units Super Tweeter: Woofer: Tweeter: Nominal impedance Dimensions (w/h/d) Mass 3-way, 3-unit, bass-reflex type 2 cm, dome type 13 cm, cone type 5 cm, cone type 6 ohms Approx. 230 mm Approx. 3.0 kg net per speaker
Sub woofer SS-WG450 for MHC-GX450
Other models: Front speaker SS-RG555 for MHC-RG555/ RG551S/RG441
Transmitter TMR-HT1 for MHC-GX750
Carrier frequency Channel CHANNEL 1: CHANNEL 2: CHANNEL 3: Modulation Power source 913.4 914.6 MHz 913.4 MHz 914.0 MHz 914.6 MHz FM stereo DC 9 V: supplied AC power adaptor (AC-GSX100) phono jacks/stereo mini jack

Audio input

Sub woofer SS-WG750 for MHC-RG551S
Power requirements North American models: 120 V AC, 60 Hz European and Russian models: 230 V AC, 50/60 Hz Australian model: V AC, 50/60 Hz Argentine models: 220 V AC, 50/60 Hz Mexican models: 127 V AC, 60 Hz Saudi Arabian model: 120 127/220 or V AC, 50/60 Hz Adjustable with voltage selector Other models: 120 V, 220 V or V AC, 50/60 Hz Adjustable with voltage selector Power consumption USA models: MHC-GX750/RX550: 230 watts MHC-GX450: 265 watts MHC-GX250: 205 watts Canadian models: MHC-GX750: 280 VA MHC-GX450: 330 VA MHC-GX250: 260 VA European and Russian models: MHC-RG444S: 275 watts 0.25 watts (at the Power Saving Mode) MHC-RG333: 180 watts 0.25 watts (at the Power Saving Mode) MHC-RG222: 110 watts 0.25 watts (at the Power Saving Mode) MHC-RG121: 110 watts 0.25 watts (at the Power Saving Mode)

MHC-GX450

SERVICE MANUAL

Ver 1.0 2004.03

US Model Canadian Model
MHC-GX450 is composed of following models. As for the service manual, it is issued for each component model, then, please refer to them.

COMPONENT MODEL NAME

COMPACT DISC DECK RECEIVER SYSTEM FRONT SPEAKER SUB WOOFER MHC-GX450 HCD-GX450 SS-RG444 SS-WG450

PARTS LIST

Part No. 1-478-518-11 1-754-094-12 1-754-243-11 4-236-961-01 4-252-491-11 4-252-491-21 Description Remarks COMMANDER, STANDARD (RM-SC3) (INCLUDING BATTERY COVER) ANTENNA, LOOP (AM) ANTENNA (FM) FOOT (FOR SPEAKER) MANUAL, INSTRUCTION (ENGLISH) MANUAL, INSTRUCTION (FRENCH)(Canadian model)
MINI Hi-Fi COMPONENT SYSTEM

9-877-533-01

2004C16-1 2004.03

Sony Corporation

Home Audio Company Published by Sony Engineering Corporation