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2

SAFETY INFORMATION

Read these instructions.

Keep these instructions.

Heed all warnings.

Follow all instructions.

Do not use this apparatus near water.

Clean only with a dry cloth.

Do not block any ventilation openings. Install in accordance with the 

manufacturer’s instructions.

Do not install near any heat sources such as radiators, heat registers, stoves or 

other apparatus (including amplifiers) that produce heat.

Do not defeat the safety purpose of the polarized or grounding-type plug. 

A polarized plug has two blades with one wider than the other. A 
grounding-type plug has two blades and a third grounding prong. The 
wide blade or the third prong is provided for your safety. If the provided 
plug does not fit into your outlet, consult an electrician for replacement 
of the obsolete outlet.

Protect the power cord from being walked on or pinched, particularly at 

plugs, convenience receptacles and the point where they exit from the 
apparatus.

Only use attachments/accessories specified by the manufacturer.

11. 
12. Use only with the cart, stand, tripod, bracket or table specified by the 

manufacturer or sold with the apparatus. When a cart is used, 
use caution when moving the cart/apparatus combination to 
avoid injury from tip-over.

Unplug this apparatus during lightning storms or when unused for long 

periods of time.

Refer all servicing to qualified service personnel. Servicing is required when 

the apparatus has been damaged in any way, such as power supply cord 
or plug is damaged, liquid has been spilled or objects have fallen into the 
apparatus, the apparatus has been exposed to rain or moisture, does not 
operate normally, or has been dropped.

Do not expose this apparatus to dripping or splashing and ensure that no 

objects filled with liquids, such as vases, are placed on the apparatus.

To completely disconnect this apparatus from the AC Mains, disconnect the 

power supply cord plug from the AC receptacle.

The mains plug of the power supply cord shall remain readily operable.

Do not expose batteries to excessive heat such as sunshine, fire or the like.

 The lightning flash with arrowhead symbol, within an equilateral 

triangle, is intended to alert the user to the presence of uninsulated 
“dangerous voltage” within the product’s enclosure that may be of 

sufficient magnitude to constitute a risk of electric shock to 
persons.

 The exclamation point within an equilateral triangle is intended to 

alert the user to the presence of important operating and 
maintenance (servicing) instructions in the literature 

accompanying the product.

WARNING: To reduce the risk of fire or electric shock, do not expose this 
apparatus to rain or moisture.

Your AVR 760/AVR 660 has been designed for use with 230-240 volt AC 
current. Connection to a line voltage other than that for which it is intended 
can create a safety and fire hazard and may damage the unit.

If you have any questions about the voltage requirements for your specific 
model, or about the line voltage in your area, contact your selling dealer 
before plugging the unit into a wall outlet.

To avoid safety hazards, use only the power cord supplied with your unit. We 
do not recommend that extension cords be used with this product. As with all 
electrical devices, do not run power cords under rugs or carpets or place heavy 
objects on them. Damaged power cords should be replaced immediately by 
an authorized service center with a cord meeting factory specifications.

When disconnecting the power cord from an AC outlet, always pull the plug; 
never pull the cord. If you do not intend to use the unit for any considerable 
length of time, disconnect the plug from the AC outlet.

There are no user-serviceable components inside this product. Opening the 
cabinet may present a shock hazard, and any modification to the product will 
void your warranty. If water or any metal object such as a paper clip, wire 
or staple accidentally falls inside the unit, disconnect it from the AC power 
source immediately, and consult an authorized service center. 

NOTE: This Owner's Manual explains the advanced 

functions of the harman/kardon AVR 760/AVR 660 

receivers. It also contains note sheets for your personal 

use when setting up and adjusting your unit. Please 

read and use the Basic Manual that came with your unit 

before continuing with this Advanced Manual.

AVR 660 -760, 230V Service Manual

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3

TABLE OF CONTENTS and FEATuRES

AVR 760

 

: 85 Watts x 7, seven channels driven at full power at 8 ohms, 

20Hz – 20kHz, <0.07% THD, 595 watts total.  
AVR 660: 75 Watts, 525 watts total.

High-current capability, ultrawide-bandwidth amplifier design with low 

 

negative feedback

All-discrete amplifier circuitry

 

Quadruple-crossover bass management with DVD-Audio bass 

 

management capability

Dual 32-bit TI DA 710 DSP processors

 

192kHz/24-bit A/D and D/A conversion

 

Sampling upconversion to 96kHz

 

Dolby® Volume processing

 

Dolby Digital EX, Dolby Digital Plus, Dolby TrueHD 

 

Dolby Pro Logic® II and IIx (Movie, Music and Game), up to 96kHz

 

Dolby Virtual Speaker Version 2 (Reference or Wide, 2-channel)

 

Dolby Headphone Version 2, up to 96kHz 

 

DTS-HD High Resolution Audio™, DTS-HD Master Audio™

 

DTS® (5.1; DTS Stereo; DTS-ES® 6.1 Discrete and Matrix)

 

DTS 96/24™ (DTS Stereo)

 

DTS Neo:6® (Cinema 5-,6- or 7-channel; Music 5-, 6- or 7-channel), up to 

 

96kHz

Logic 7® (Movie, Music and Game), up to 96kHz

 

5- or 7-Channel Stereo, up to 96kHz

 

Surround Off (DSP or Analog Bypass)

 

ADVANCED FuNCTIONS
  4  Audio Processing and Surround Sound
  4    Analog Audio Signals
  4    Digital Audio Signals
  4    Surround Modes
  5    Dolby® Surround Settings
  6  Manual Speaker Setup
  8  Audio Effects
  9  Video Adjustments
 11  Multizone Operation
 11  System Settings
 13  Advanced Remote Control Functions
 15   Appendix with Tables for Default Settings, Worksheets and Remote 

Control Codes

Please register your AVR 760/AVR 660 at www.harmankardon.com.
NOTE:  You’ll need the product’s serial number. At the same time, you can 
choose to be notified about new products and/or special promotions.

Harman Kardon

Page 38 of 264

4

ADVANCED FuNCTIONS

Much of the AVR 760/AVR 660’s performance is handled automatically, with 
little intervention required on your part. The AVR 760/AVR 660 is capable 
of being customized to suit your system and your tastes. In this Advanced 
Functions Manual, some of the more advanced adjustments available are 
described.

Audio signals output by sources are encoded in a variety of formats that can 
affect not only the quality of the sound but the number of speaker channels 
and the surround mode. You may also manually select a different surround 
mode, when available.

Analog audio signals usually consist of two channels – left and right. The 
AVR 760/AVR 660 offers three options for playback:

1. 

: The 2-channel signal is passed directly from 

the input to the volume control, without being digitized or undergoing 
any processing for bass management or surround sound. To select analog 
bypass mode:

The analog audio inputs for the source must be selected. If necessary, 

a) 

press the Info Button on the remote and use the 

KL

 Buttons to scroll 

to the Audio Input from source setting.

The tone controls must be disabled by setting the Tone Control to Off. 

b) 

Press the Audio Effects Button to access the Tone Control setting.

The 2-channel Stereo mode must be selected. Press the Surround 

c) 

Modes Button to access the STEREO line of the Surround Modes 
submenu. Press the OK Button to select 2-channel Stereo.

NOTE: Audio from The Bridge II source is analog, and when 2-channel 
Stereo mode is selected, the audio will be played in Analog Bypass mode. 

2. 

: The AVR 760/AVR 660 is able to process 

2-channel audio signals to produce multichannel surround sound, even 
when no surround sound has been encoded in the recording. Among the 
available modes are the Dolby Pro Logic II/IIx modes, the Dolby Virtual 
Speaker modes, the DTS Neo:6 modes, the Logic 7 modes and the Stereo 
modes. 

Digital audio signals offer greater capacity, which allows the encoding of 
center and surround channel information directly into the signal. The result 
is improved sound quality and startling directionality, since each channel is 
reproduced discretely.

Even when only two channels are encoded, the digital signal allows for a 
higher sampling rate that delivers greater detail. High-resolution recordings 
sound extraordinarily distortion-free, especially at high frequencies.

Surround mode selection is dependent upon the format of the incoming 
audio signal, as well as personal taste. Table A13 offers a brief description of 
each mode and indicates the types of incoming signals or digital bitstreams 
the mode may be used with. Additional information about the Dolby and DTS 
modes is available on the companies’ Web sites: www.dolby.com and www.
dtsonline.com.

When in doubt, check the jacket of your disc for more information on which 
surround modes are available. Usually, nonessential sections of the disc, such 
as trailers, extra materials or the disc menu, are only available in Dolby Digital 
2.0 (2-channel) or PCM 2-channel mode. If the main title is playing and the 
display shows one of these surround modes, look for an audio or language 
setup section in the disc’s menu. Also, make sure your player’s audio output is 
set to the original bitstream rather than 2-channel PCM. Stop play and check 
the player’s output setting.

For any incoming signal, only a limited number of surround modes are 
available. Although there is never a time when all of the AVR 760/AVR 660’s 
surround modes are available, there is usually a wide variety of modes 
available for a given input.

Multichannel digital recordings are found in the 5.1-, 6.1- or 7.1-channel 
formats. The channels included in a 5.1-channel recording are front left, 
front right, center, surround left, surround right and LFE. The LFE channel is 
denoted as “.1” to represent the fact that it is limited to the low frequencies.

6.1-Channel recordings add a single surround back channel, and 7.1-channel 
recordings add surround back left and surround back right channels to 
the 5.1-channel configuration. New formats are available in 7.1-channel 
configurations. The AVR 760/AVR 660 is able to play the new audio formats, 
delivering a more exciting home theater experience. 

NOTE: To use the 6.1- and 7.1-channel surround modes, the Surround 
Back channels must be enabled. See the Manual Speaker Setup section on 
page 6 for more information.

The Digital formats are Dolby Digital 2.0 (two channels only), Dolby Digital 
5.1, Dolby Digital EX (6.1), Dolby Digital Plus (7.1), Dolby TrueHD (7.1), 
DTS-HD High-Resolution Audio (7.1), DTS-HD Master Audio (7.1), DTS 5.1, 
DTS-ES (6.1 Matrix and Discrete), DTS 96/24 (5.1), 2-channel PCM modes in 
32kHz, 44.1kHz, 48kHz or 96kHz, and 5.1 or 7.1 multichannel PCM.

When a digital signal is received, the AVR 760/AVR 660 detects the encoding 
method and the number of channels, which is displayed briefly as three 
numbers, separated by slashes (e.g., “3/2/.1”).

AVR 660 -760, 230V Service Manual

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5

ADVANCED FuNCTIONS

The first number indicates the number of front channels in the signal: 

“1”  represents a monophonic recording, usually an older program that has 

been digitally remastered or, more rarely, a modern program for which 
the director has chosen a special effect. 

“2”  indicates the presence of the left and right channels, but no center 

channel.

“3”  indicates that all three front channels (left, right and center) are present.

The second number indicates whether any surround channels are present:

“0”  indicates that no surround information is present.

“1”  indicates that a matrixed surround signal is present.

“2”  indicates discrete left and right surround channels.

“3”  is used with DTS-ES bitstreams to represent the presence of the discrete 

surround back channel, in addition to the side surround left and right 
channels.

“4”  is used with 7.1-channel digital formats to indicate the presence of two 

discrete side surround channels and two discrete back surround channels.

The third number is used for the LFE channel:

“0”  indicates no LFE channel.

“.1”  indicates that an LFE channel is present.

The 6.1-channel signals – Dolby Digital EX and DTS-ES Matrix and Discrete – 
each include a flag meant to signal the receiver to decode the surround back 
channel, indicated as 3/2/.1 EX-ON for Dolby Digital EX materials, and 3/3/.1 
ES-ON for DTS-ES materials.

Dolby Digital 2.0 signals may include a Dolby Surround flag indicating DS-ON 
or DS-OFF, depending on whether the 2-channel bitstream contains only 
stereo information, or a downmix of a multichannel program that can be 
decoded by the AVR’s Dolby Pro Logic decoder. By default, these signals are 
played in Dolby Pro Logic IIx Movie mode.  

When a PCM signal is received, the PCM message and the sampling rate 
(32kHz, 44.1kHz, 48kHz or 96kHz) will appear.

When only two channels – left and right – are present, the analog surround 
modes may be used to decode the signal into the remaining channels. If 
you would prefer a different surround format than the native signal’s digital 
encoding, press the Surround Modes Button to display the Surround Modes 
menu (see Figure 26 in the Basic Manual). 

The Auto Select option uses the native signal’s digital encoding, e.g., Dolby 
Digital, DTS, Dolby TrueHD or DTS-HD Master Audio. For 2-channel materials, 
the AVR defaults to Logic 7 Movie mode. If you prefer a different surround 
mode, select the surround mode category: Virtual Surround, Stereo, Movie, 
Music or Video Game. Press the OK Button to change the mode.

Each category is set to a default surround mode:

 

: Dolby Virtual Speaker Reference

 

: 7-channel stereo

 

: Logic 7 Movie

 

: Logic 7 Music

 

: Logic 7 Game

You may select a different mode. The choice of surround modes depends on 
the number of speakers in your system.

 

: Dolby Virtual Speaker Reference or Wide

 

: 2-channel stereo, 5-channel stereo or 7-channel stereo

 

: Logic 7 Movie, DTS Neo:6 Cinema, Dolby Pro Logic II Movie, Dolby 

Pro Logic IIx Movie
Music

 

: Logic 7 Music, DTS Neo:6 Music, Dolby Pro Logic II Music, Dolby 

Pro Logic IIx Music
Video Game

 

: Logic 7 Game, Dolby Pro Logic II Game, Dolby Pro Logic 

IIx Game

Once you have programmed the surround mode for each type of audio, select 
the line from the Surround Modes menu to override the AVR’s automatic 
surround mode selection. The AVR will use the same surround mode the next 
time the source is selected.

Please refer to Table A13 in the appendix for more information on which 
surround modes are available with different bitstreams.

Some additional settings are available for Dolby modes. When the Dolby Pro 
Logic II or IIx Music modes have been selected, choose the Edit submenu to 
adjust the Center Width, Dimension and Panorama settings. See Figure 27.

Figure 27 – Dolby Pro Logic II/IIx Music Mode Settings

Center Width: This setting affects how vocals sound through the three 
front speakers. A higher number (up to 7) focuses the vocal information 
tightly on the center channel. Lower numbers broaden the vocal soundstage. 
Use the 

M N

 Buttons to adjust.

Dimension: This setting affects the depth of the surround presentation, 
allowing you to “move” the sound toward the front or rear of the room. The 
setting of “0” is a neutral default. Setting “F-3” moves the sound toward the 
front of the room, while setting “R-3” moves the sound toward the rear. Use 
the 

M N

 Buttons to adjust. 

Panorama: With the Panorama mode turned ON, some of the sound from 
the front speakers is moved to the surround speakers, creating an enveloping 
“wraparound” effect. Each press of the OK Button toggles the setting on or off.

Harman Kardon

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