Receiver

SIGNAL GND to ground

Where do I go next?

If you want to connect other components, go on to the next section. If youre only planning to use the receiver to listen to the radio, go to Speaker System Hookups on pages 6 and 7. What antennas will I need?
FM wire antenna (supplied) (1) AM loop antenna (supplied) (1)
Audio/Video Component Hookups
This section describes how to connect your audio, and video (audio signal only) components to the receiver. If you want to use the receiver as an amplifier, complete these connections. For specific locations of the jacks, see the illustration below.
5.1/DVD INPUT y (STR-SE581 only) TV/DBS

Hookups

FM wire antenna After connecting the wire antenna, keep it as horizontal as possible.

AM loop antenna

If you have poor FM reception
Connect a 75-ohm coaxial cable (not supplied) to an FM outdoor antenna. Pull back the mesh portion surrounding the inner cable and connect it to the earth terminal (right side). Connect the inner cable to the FM terminal (left side). Receiver

CD TAPE/MD

What cords will I need?
Audio cords (not supplied) (1 for each CD player, turntable, TV or DBS; 2 for each tape deck, MD recorder or VCR). White (L) White (L) Red (R)
If you have poor AM reception
Connect a 20 to 50 ft. (6 to 15-meter) insulated wire (not supplied) to the AM antenna terminal in addition to the AM loop antenna. Try to extend the wire outdoors and keep it horizontal.

Red (R)

(continued)
The arrow indicates signal flow. CD player

CD IN L

DVD player/AC-3 decoder (STR-SE581 only)

CD player

OUTPUT LINE
You can play decoded Dolby Digital AC-3 soundtracks through the speakers connected to the amplifier
If you have a Dolby Digital AC-3 decoder you can amplify a decoded Dolby Digital AC-3 soundtrack with the following connections. Receiver
FRONT 5.1/DVD INPUT REAR CENTER

Turntable

PHONO IN L
Dolby Digital AC-3 decoder (etc.)
PRE OUT CENTER REAR FRONT

WOOFER

If your turntable has an earth lead
To prevent hum, connect the earth lead to the y ground terminal on the receiver.
Go on to the next section to connect the speakers.

Tape deck or MD recorder

TAPE/MD REC OUT IN L

OUTPUT LINE INPUT LINE L

Speaker System Hookups

TV/DBS

TV/DBS AUDIO IN L
TV tuner or Digital broadcasting system

OUTPUT AUDIO

This section describes how to connect your speakers to the receiver. Although front (left and right) speakers are required, center and rear speakers are optional. Adding center and rear speakers will enhance the surround effects. Connecting an active woofer will increase bass response (STR-SE581 only). For specific locations of the terminals, see the illustration below.

WOOFER (STR-SE581 only) FRONT SPEAKERS A
VIDEO AUDIO OUT AUDIO IN L
OUTPUT INPUT AUDIO AUDIO L

SURROUND SPEAKERS REAR

SURROUND SPEAKER CENTER
For optimum surround sound effect, place your speakers as shown below.
Rear speaker 60 - 90 cm 45
If you have an additional front speaker system
Connect them to the FRONT SPEAKERS B terminals.
If your TV monitor uses separate speakers
You can connect one of them to the SURROUND SPEAKER CENTER terminals for use with Dolby Pro Logic Surround sound (see page 15).
Selecting the speaker system
To drive the speakers, select the speaker system as follows: What cords will I need?
Speaker cord (not supplied) (1 for each speaker) (+) () (+) ()

To drive

Speaker system A (connected to the FRONT SPEAKERS A terminals) Speaker system B (connected to the FRONT SPEAKERS B terminals) Both speaker systems A and B (series connection)

Depress SPEAKERS button

Twist the stripped ends of the cord about 2/3 inch (15 mm). Be sure to match the speaker cord to the appropriate terminal on the components: + to + and to. If the cords are reversed, the sound will be distorted and will lack bass.

Front speakers

If you want to enjoy the surround sound, be sure to connect the front speakers to the FRONT SPEAKERS A terminal. No sound is heard when you press SPEAKERS A+B without connecting speaker system B.

FRONT SPEAKERS

Front speaker (L)
Go on to the next section to connect the AC power cord.

Rear and center speakers

Rear speaker (R) Rear speaker (L) Center speaker

SURROUND SPEAKERS

R REAR L CENTER

Note (except STR-SE581)

Be sure to connect the both rear speakers (L and R). No sound is heard if only one speaker is connected.
Active woofer (STR-SE581 only)

WOOFER AUDIO OUT

Active woofer
Do not connect any other component.

AC Hookups

Connecting the AC power cord
Connect the AC power cord from this receiver and from your audio/video components to a wall outlet. If you connect other audio components to the SWITCHED AC OUTLET on the receiver, the receiver can supply power to the connected components so you can turn on/off the whole system when you turn on/ off the receiver.

SWITCHED AC OUTLET

Before You Use Your Receiver
Before you start using your receiver, make sure that you have: Turned MASTER VOLUME to the leftmost position (0). Selected the appropriate speaker system. (See Selecting the speaker system on page 7.) Set BALANCE to the center position.

to a wall outlet

Caution
Make sure that the power consumption of the component connected to the receivers AC outlet does not exceed 120 watts. Do not connect high-wattage electrical home appliances such as electric irons, fans, or TVs to this outlet.
If you connect a SONY CDP-CX681 CD player (200 disc changer) to the SWITCHED AC OUTLET on the receiver, you can turn on the whole system using the remote. To do this, press and hold down the CD button until both the receiver and the compact disc player are on.
Before you use the receiver, go to the next section to make sure that all the controls are set to the appropriate positions.

Receiver operations

Selecting a Component
To listen to or watch a connected component, first select the function on the receiver or with the remote. Before you begin, make sure you have: Connected all components securely and correctly as indicated on pages 5 to 8. Turned MASTER VOLUME to the leftmost position (0) to avoid damaging your speakers.
1/u (power) Function buttons 5.1/DVD INPUT BASS BOOST MASTER VOLUME

Mute the sound

Do this
Press MUTING on the remote. Press again to restore the sound Press BASS BOOST to turn on the BASS BOOST indicator. Turn the BALANCE control left or right. Adjust the BASS and TREBLE controls.

Reinforce the bass

Adjust the balance

Adjust the tone quality

When you listen with headphones
Connect the headphones to the PHONES jack and set the SPEAKERS buttons to OFF.
5.1 / DVD INPUT mode (STR-SE581 only)
BASS TREBLE BALANCE When you are listening to 5.1/DVD INPUT mode, BASS, TREBLE, BASS BOOST and SURROUND do not function.
Press 1/u (power) to turn on the receiver. Press a function button to select the component you want to use: Press

PHONO TUNER CD TAPE/MD

Watching/listening to video programs
When you watch/listening to TV or video programs, we recommend you play audio portion through the receiver instead of your TVs speaker. This lets you take advantage of the receivers surround sound effects, like Dolby Pro Logic Surround and lets you use the receivers remote to control the audio. Turn off the speakers on your TV before you start so you can enjoy the surround sound from your receiver.

To watch/listen to TV programs, turn on the TV, TV tuner and the receiver and press TV/DBS on the receiver. To watch videos, do the following:

To listen to or watch

Records Radio programs Compact discs (CD) Audio tapes or MiniDiscs (MD) TV programs or Digital broadcasting system Video tapes DVD player/AC-3 decoder
TV/DBS VIDEO 5.1/DVD INPUT (STRSE581 only)
Press VIDEO to select the VCR. Turn on the TV and set the TVs video input to match your video component. Turn on the VCR, and start playback.
Turn on the component, for example, a CD player, and then start playing. To tune in radio stations on this receiver, see Receiving Broadcasts on page 11. Turn MASTER VOLUME to adjust the volume. To adjust the volume of the TVs speakers, use the volume control on the TV.

Using the remote

The remote lets you operate the receiver and the Sony components that are connected to it.
TV CONTROL SYSTEM STANDBY SYSTEM CONTROL/ FUNCTION
Press one of the SYSTEM CONTROL/FUNCTION buttons to select the component you want to use. The SYSTEM CONTROL/FUNCTION buttons on the remote are factory-set as follows: To listen to or watch

Records Radio programs

Changing the factory setting of a function button
If the factory settings of the FUNCTION buttons dont match your system components, you can change them. For example, if you have two CD players and you dont have a tape deck or an MD recorder, you can assign the TAPE/MD button to your second CD player. Note that the settings of the TUNER and PHONO buttons cannot be changed.

Press watch

PHONO TUNER
Compact discs (CD) CD Audio tapes or MiniDiscs (MD) TV programs VHS Video tapes (VTR-3 mode) DVD Player/AC-3 decoder TAPE/MD (INITIAL-TAPE B MODE) TV VIDEO CD and PHONO (STR-SE581 only)
SYSTEM CONTROL/ FUNCTION Numeric buttons
If you want to change the factory setting of a button, see the next section. The receiver and the selected component turn on. If the component does not turn on
Press the power switch on the component.
Hold down the SYSTEM CONTROL/FUNCTION button whose function you want to change (TAPE/MD, for example). Press the corresponding numeric button of the component you want to assign to the SYSTEM CONTROL/FUNCTION button (1 - CD player, for example).

Start playing. Refer to Remote Button Descriptions on page 22 for details.
To turn off the components
Press SYSTEM STANDBY. You can turn off the video and audio components connected to the SWITCHED AC OUTLET at the same time.
The numeric buttons are assigned to select the functions as follows: Numeric button

>10 Enter *

Operates
CD player DAT deck MD deck Tape deck A Tape deck B LD player VCR (remote control mode VTR 1*) VCR (remote control mode VTR 2*) VCR (remote control mode VTR 3*) TV DBS DVD

If you use a Sony TV

When you press TV to watch a TV program, the TV turns on and switches to the TV input. The TV also turns on when you press VIDEO and switches to the appropriate video input. If the TV does not switch to the appropriate input automatically, press TV/VIDEO.
When you watch TV without using the receiver (only for Sony TVs)
Press TV CONTROL to set the remote to operate only the TV. When you press this button, the TV turns on and switches to the TV input. If the TV does not switch to the TV input automatically, press TV/VIDEO.
Sony VCRs are operated with a VTR 1, 2 or 3 setting. These correspond to Beta, 8mm and VHS respectively.
Now you can use the TAPE/MD button to control a second CD player. To reset the setting to the factory setting
Repeat the above procedure.
If the STEREO indicator remains off
Press FM MODE when an FM stereo broadcast is received.
If an FM stereo program is distorted
The STEREO indicator flashes. Press FM MODE to change to monaural (MONO). You will not have the stereo effect but the distortion will be reduced. To return to stereo mode, press this button again.

Receiving Broadcasts

This receiver lets you enter a stations frequency directly by using the numeric buttons (direct tuning). If you dont know the frequency of the station you want, see Receiving broadcasts by scanning stations (automatic tuning) on the next section. Before you begin, make sure you have: Connected an FM/AM antenna to the receiver as indicated on page 5. Selected the appropriate speaker system. (See Selecting the speaker system on page 7.)
1/u (power) Numeric buttons MASTER VOLUME
If you cannot tune in a station and the entered numbers are flashing
Make sure youve entered the right frequency. If not, press DIRECT and re-enter the frequency you want. If the entered numbers still flash, the frequency is not used in your area.
To watch FM simulcast TV programs
Make sure that you tune in the simulcast program both on the TV (or the VCR) and on the receiver.
If you enter a frequency not covered by the tuning interval
The entered value is automatically rounded up or down to the closest covered value. Tuning intervals for direct tuning are: FM: 50 kHz intervals AM: 9 kHz/10 kHz intervals (see page 18 for more details)

TUNING FM FM/AM DIRECT +/ MODE
Receiving broadcasts by scanning stations (automatic tuning)
If you dont know the frequency of the radio station you want, you can have the receiver scan all the receivable stations to locate the one you want.
Press 1/u (power) to turn on the receiver. Press TUNER. The last received station is tuned in. Press FM or AM to select FM or AM stations. Press DIRECT. Press the numeric buttons to enter the frequency. Example 1: FM 102.50 MHz Example 2: AM 1350 kHz
Press TUNER. The last received station is tuned in. Press FM or AM to select FM or AM. Press TUNING + or. Press the + button for a higher station number; press the button for a lower one. When you tune past either end of the band, the receiver automatically jumps to the opposite end. Every time a station is received, the receiver stops scanning. To continue scanning, press the button again.
(You dont have to enter the last 0.)
When you tune in AM stations, adjust the direction of the AM loop antenna for optimum reception.
To receive other stations

Repeat Steps 3 to 5.

To change a preset station
Presetting Radio Stations
Youll most likely want to preset the receiver with the radio stations you listen to often so that you dont have to tune in the station every time. The receiver can store a total of 30 FM or AM stations. You can store the stations on preset numbers combining 3 characters (A, B, C) and numbers (0 - 9). For example, you can store a station as preset number A1, B6 or C9, etc.
PRESET TUNING Numeric buttons
Preset a new station on the number you want to change.
If the AC power cord is disconnected for about one week, the preset stations will be cleared from the receivers memory, and you will have to preset the stations again.
Tuning preset stations (preset tuning)
You can tune directly to a preset station by entering its preset number. If you dont know which stations are preset on which numbers, you can tune by scanning the preset stations.

MEMORY SHIFT TUNER

Press TUNER. The last received station is tuned in. Press SHIFT to select a character (A, B or C), then press the number. For example, select A and then press 7 to tune in the station preset as A7. You can tune by scanning the preset stations
First press TUNER and then press PRESET TUNING + or to select the station you want. Each time you press the buttons, the preset numbers change as follows: n A1 A2 A0 B1 B2 B0 N n C0 C2 C1N
Press TUNER. The last received station is tuned in. Tune in the station you want. If you are not familiar with how to tune in a station, see Receiving Broadcasts on the previous page. Press MEMORY. MEMORY appears for a few seconds. Do steps 4 and 5 before MEMORY goes out. Press SHIFT to select a character (A, B or C). Each time you press SHIFT, the letter A, B or C appears in the display. If MEMORY disappears, start again from step 3.
While MEMORY is displayed, press the number you want to use (0 to 9). Repeat steps 2 to 5 to preset other stations.

Recording

This receiver makes it easy to record to and from the components connected to the receiver. You dont have to connect playback and recording components directly: once you select a program source on the receiver, you can record and edit as you normally would using the controls on each component. Before you begin, make sure youve connected all components properly.

Function buttons

Recording on a video tape
You can record TV program or digital broadcasting system using the receiver. You can also add audio from a variety of audio sources when editing a video tape. See your VCRs instruction manual if you need help.
Press TV/DBS to select the program source. Set the component to be ready for playing. For example, turn on the TV and TV tuner. Insert a blank video tape into the VCR for recording. Start recording on the VCR. You can replace audio while editing a video tape
At the point you want to start adding different sound, press another function button (for example, CD) and start playback. The sound from the selected component will be recorded over the original audio.
Playback component (program source)
Recording component (Tape deck, MD recorder, VCR)
To resume recording the original sound, press the TV/DBS function button.

: Audio signal flow

Recording on an audio tape or MiniDisc
You can record on a cassette tape or MiniDisc using the receiver. See the instruction manual of your tape deck or MD recorder if you need help.
You cannot record the audio and video signal during 5.1/DVD INPUT mode. For VCR recording, please connect video signal directly from sources such as TV.
Press one of the function buttons to select the program source. Set the component to be ready for playing. For example, insert a CD into the CD player. Insert a blank tape or disc into the recording deck and adjust the recording level, if necessary. Start recording on the recording deck and then start playing the component.

Using Surround Sound

When you use the remote

Choosing a Surround Mode

You can take advantage of surround sound simply by selecting one of the three pre-programmed surround modes according to the type of music you wish to play.
Surround MODE SURROUND ON/OFF
Each time you press SURROUND MODE, surround mode changes as follows: STR-SE581 only n PRO LOGIC* n C. STUDIO A n C. STUDIO B LARGE HALL** N SMALL HALL** N STR-SE381 only n PRO LOGIC* n C. STUDIO n HALL
* DOLBY appears in the display. ** S HALL and L HALL appears in the display.

EFFECT/DELAY TIME

SET UP
To turn off surround sound

Press SURROUND ON/OFF.

SURROUND ON/OFF

SURROUND MODE

You can find Dolby Surround-encoded software by looking at the packaging
However, some videos and laser discs may use Dolby Surround sound even if its not indicated on the package.
Make sure to select speaker A with the SPEAKERS A button. Otherwise, you cant obtain the surround effect.
Press SURROUND ON/OFF to turn on the surround sound. One of the SUR (surround) MODE indicators lights up in the display. Press Surround MODE repeatedly until the indicator for the surround mode you want lights up. Select the appropriate surround mode as follows: Select

PRO LOGIC*

Adjusting the Effect Level (for C. STUDIO and HALL only)
You can make the surround sound more prominent by increasing the EFFECT level. This control lets you adjust the presence of the surround effect in six steps (1-6).
Decode programs processed with Dolby Surround and create the atmosphere of a movie theater. Add the acoustic reflections of a cinema studio to decoded Dolby Surround signals. Reproduce the acoustics of a rectangular concert hall. Ideal for soft, acoustic sounds.
Start playing a programme source. Press EFFECT/DELAY TIME or EFFECT/DELAY on the remote to select the level you prefer. The effect level (EFFECT 1 EFFECT 6) appears on the display.

C. STUDIO

Changing the effect level may not produce major variations in the surround effect when used with certain playback sources.
* DOLBY appears in the display.

Getting the Most Out of Dolby Pro Logic Surround Sound
To obtain the best possible Dolby Pro Logic Surround sound, first select the center mode according to the speaker system you have. Then, adjust each speaker volume and delay time. Note that you must have at least one additional pair of speakers and/or one center speaker to do the following adjustments.
CENTER LEVEL +/ Surround MODE SURROUND ON/OFF
Selecting the center mode
The receiver offers you four center modes: Phantom, 3 Channel Logic, Normal, and Wide. Each mode is designed for a different speaker configuration. Select the mode that best suits your speakers system configuration:
Press SURROUND ON/OFF to turn on surround sound. Press Surround MODE repeatedly to select the Dolby surround sound field (PRO LOGIC or C. STUDIO mode). Press SET UP repeatedly until the set-up you want appears in the display. Select the set-up as follows: Select

PHANTOM

If you have
Front and rear speakers, no center speaker

So that

The sound of the center channel is output from the front speakers. The sound of the rear channel is output from the front speakers. The bass sound of the center channel is output from the front speakers (because a small speaker cannot produce enough bass). For complete Dolby Pro Logic Surround sound.
REAR LEVEL +/ SURROUND ON/OFF EFFECT/DELAY REAR LEVEL +/

EFFECT/ DELAY TIME

SURROUND MODE TEST TONE
Front and center speakers, no rear speaker
3 CH LOGIC (3 Channel Logic)
Front and rear speakers, and a small center speaker

NORMAL

CENTER LEVEL +/ Front and rear speakers, and a large center speaker WIDE
Adjusting the speaker volume
The test tone feature lets you set the volume of your speakers to the same level. (If all of your speakers have equal performance, you dont have to adjust the speaker volume.) Using the controls on the remote lets you adjust the volume level from your listening position.

Adjusting the delay time

You can make the surround sound more effective by delaying the output from the rear speakers (delay time). You can select from three delay times, S (15 mS), M (20 mS), and L (30 mS). For example, if youve placed the rear speakers in a large room or apart from your listening position, set the delay time shorter.
Select the PRO LOGIC mode (see Choosing a Surround Mode on page 14) and select the appropriate center mode (see Selecting the center mode on page 15). Press TEST TONE on the remote. You will hear the test tone from each speaker sequentially. Adjust the volume level so that the test tone from each speaker is at the same level from your listening position. To adjust the level of center speaker, press CENTER LEVEL + or on the remote. To adjust the level of rear speakers, press REAR LEVEL + or on the remote. Press TEST TONE on the remote to turn off the test tone. You can adjust all speakers at one time

Adjust MASTER VOL on the remote or MASTER VOLUME on the receiver.
Start playing a program source encoded with Dolby Surround sound. Press EFFECT/DELAY on the remote or EFFECT/DELAY TIME on the receiver repeatedly to choose the delay time parameter. The current delay time appears in the display, such as DELAY S, DELAY M or DELAY L.
Select the PRO LOGIC mode when you adjust the delay time using EFFECT/DELAY TIME on the receiver.
You can also adjust the volume level with the controls on the receiver
After pressing TEST TONE on the remote, press REAR LEVEL + or and CENTER LEVEL + or to adjust the level of the rear and center speakers respectively.
You can increase the output level of the rear speakers
The adjustment range of the rear speakers is preset from 15 to +10, but you can shift the range up 5 levels (10 to +15). Hold down MODE on the receiver while turning on the power until GAIN UP appears on the display. The values for the rear level remain fixed at 15 to +10 in the display, but you will be able to hear the difference in the actual output level. To reset the rear level adjustment range, repeat this procedure to display NORMAL.

Troubleshooting

If you experience any of the following difficulties while using the receiver, use this troubleshooting guide to help you remedy the problem. Should any problem persist, consult your nearest Sony dealer. Theres no sound or only a very low-level sound is heard. / Check that the speakers and components are connected securely. / Make sure you select the correct component on the receiver. / Make sure you set the SPEAKERS selector correctly. (see page 7) / Press MUTING on the remote if MUTING is displayed. / The protective device on the receiver has been activated because of a short circuit. (PROTECT flashes.) Turn off the receiver, eliminate the short-circuit problem and turn on the power again. The left and right sounds are unbalanced or reversed. / Check that the speakers and components are connected correctly and securely. / Adjust the BALANCE control. Severe hum or noise is heard. / Check that the speakers and components are connected securely. / Check that the connecting cords are away from a transformer or motor, and at least 10 feet (3 meters) away from a TV set or fluorescent light. / Place your TV away from the audio components. / Make sure you connect a ground wire to the antenna ground terminal. / The plugs and jacks are dirty. Wipe them with a cloth slightly moistened with alcohol. No sound is heard from the center speaker. / Select the appropriate center mode (see page 15). / Adjust the speaker volume appropriately (see page 16). No sound or only a very low-level sound is heard from the rear speakers. / Select the appropriate center mode (see page 15). / Adjust the speaker volume appropriately (see page 16). / Make sure you turn on the sound field surround mode function.

Radio stations cannot be tuned in. / Check that the antennas are connected securely. Adjust the antennas and connect an outdoor antenna if necessary. / The signal strength of the stations is too weak (when you tune in with automatic tuning). Use direct tuning. / No stations have been preset or the preset stations have been cleared (when you tune in with scanning preset stations). Preset the stations (see page 12). Surround effect cannot be obtained. / Make sure you turn on the sound field function. / Make sure that the front speakers are connected to the SPEAKERS A terminal. / Make sure that SPEAKERS A and B buttons are depressed when two sets of front speakers are used. Recording cannot be made. / Check that the components are connected correctly. / You cannot record audio and video from a program source connected to the 5.1/DVD INPUT jacks (STR-SE581 only). The remote does not function. / Point the remote at the remote sensor g on the receiver. / Remove the obstacles in the path of the remote and the receiver. / Replace both batteries in the remote with new ones if they are weak. / Make sure you select the correct function on the remote. / Pressing TV CONTROL sets the remote to operate the TV only. In this case, press one of the SYSTEM CONTROL FUNCTION buttons before operating the receiver (etc.).

Specifications

Audio power specifications

Frequency response

PHONO: RIAA equalization curve 0.5 dB TV/DBS, CD, TAPE/ MD, VIDEO, 5.1/DVD INPUT*: 10 Hz - 50 kHz 1 dB

AM tuner section

Tuning range 10 kHz intervals*** 530 - 1710 kHz 9 kHz interval 531 - 1710 kHz Loop antenna
POWER OUTPUT AND TOTAL HARMONIC DISTORTION With 8-ohm load, both channels driven, from 40 20,000 Hz, rated 100 watts (STR-SE581), or 60 watts (STR-SE381) per channel minimum RMS power, with no more than 0.5 % total harmonic distortion from 250 milliwatts to rated output.

Amplifier section

Stereo mode (8 ohms at 40 Hz - 20 kHz less than 0.5% total harmonic distortion) STR-SE581: 100W + 100W STR-SE381: 60W + 60W (8 ohms at 1 kHz, THD 0.5 %) Front: STR-SE581: 100 W/ch STR-SE381: 60 W/ch Center: (Pro Logic Mode) STR-SE581: 100 W STR-SE381: 60 W Rear: STR-SE581: 50 W/ch STR-SE381: 60 W

Select 3 CH LOGIC mode if you have front and center speakers but no rear speaker. The sound of the rear channel is output from the front speakers to let you experience some of the surround sound without using rear speakers. Front speaker (L) Center speaker Front speaker (R)

Types of sound

Early reflections Reverberation

NORMAL mode

Select NORMAL mode if you have front and rear speakers and a small center speaker. Since a small speaker cannot produce enough bass, the bass sound of the center channel is output from the front speakers. Front speaker (L) Center speaker

Direct sound

Delay time
Front speaker (R) Time lag between the surround sound output from front speakers and rear speakers. By adjusting the delay time of the rear speakers, you can obtain the feeling of presence. Make the delay time longer when you have placed the rear speakers in a small room or close to your listening position, and make it shorter when you have placed them in a large room or apart from your listening position.
Transition of sound from rear speakers
Direct sound Level Early reflections Reverberation

Rear speaker (L)

Rear speaker (R)

Direct tuning

Tuning method to let you directly enter a stations frequency using the numeric buttons. Use this method if you know the frequency of the station you want.

Early reflection time

WIDE mode
Select WIDE mode if you have front and rear speakers and a large center speaker. With the WIDE mode, you can take full advantage of Dolby Surround sound. Center Front speaker speaker (L) Front speaker (R)

Test tone

Signal given out by the receiver for adjusting the speaker volume. The test tone will come out as follows:

Dolby Pro Logic Surround

Decoding system of Dolby Surround sound standardized in TV programs and movies. Compared with the former Dolby Surround system, Dolby Pro Logic Surround improves sound image by using four separate channels: off-screen audio effects, on-screen dialog, leftto-right panning, and music. These channels manipulate the sound to be heard and enhance the action as it happens on the screen. To take advantage of Dolby Pro Logic, you should have at least one pair of rear speakers and/or one center speaker. You also need to select the appropriate center mode to enjoy a full effect.