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Advanced Features

27

DOLBY PRO LOGIC

Dolby Pro Logic is the standard mode for surround sound decoding. It uses information 

15 ms – 30 ms

encoded in a two channel stereo recording to produce four distinct channels: 

Initial Setting = 20 ms

Left, Center, Right and Surround. Use this mode for accurate reproduction of 
programs bearing the Dolby Surround, DTS Stereo, UltraStereo or other “Surround” 
logos. Surround encoded programs include videocassette and LD movies, TV and 
cable programs, radio programs and audio CDs. Dolby Pro Logic processing 
may also be used to provide a pleasing surround effect with source material that 
does not carry surround encoding.

THX CINEMA

THX Cinema is a patented process developed by Lucasfilm Ltd. as an enhancement 

15 ms – 30 ms

to surround processing. It includes additional enhancements that greatly improve 

Initial Setting = 20 ms

the spectral and spatial realism of motion pictures that are recorded with surround 
encoding. THX Cinema’s exclusive processing is designed to overcome the differences 
in acoustics between movie theaters and home listening rooms so that movie sound 
tracks will sound the same way at home as they did in the mixing room where they 
were created. Use this mode when viewing motion pictures on video.

DOLBY 3 STEREO

Dolby 3 Stereo uses the information contained in a surround encoded or stereophonic 

No Surround Channels

program to create center channel information. In addition, the information that is 
normally sent to the rear channel surround speakers is carefully mixed in with the front 
left and right channels for increased realism. Use this mode when you have a center 
channel speaker, but no surround speakers.

MOVIE SURROUND

Movie Surround processing features surround decoding with the option to extend the 

40 ms – 90 ms

delay time to 90 ms. This mode can be used in very large rooms, or to experiment with 

Initial Setting = 40 ms

delay times greater than 30 ms.

HALL SURROUND

This mode is designed for use with stereo recordings. It provides a sound field effect 

10 ms – 90 ms

that simulates the complex combination of direct and reflected sounds that create 

Initial Setting = 20 ms

the rich reverberant atmosphere of a medium sized circular concert hall.

MATRIX SURROUND

This mode is designed for use with sports broadcasts, live concerts or other programs 

10 ms – 90 ms

where the feeling of a wide surround effect is desired.

Initial Setting = 20 ms

MONO

This mode is intended for use with old movies, televisions shows and other programs

No Surround Channels

that have a monaural sound track. All sound will be reproduced through the center 
channel speaker, if installed. If there is no center channel speaker, monaural sound is 
reproduced from the front left and right speakers.

STEREO

This mode turns off all surround processing and presents the pure left and right 

No Surround Channels

channel presentation of two channel stereo programs.

Surround Mode Chart

Engelsk manual AVI250  11/01/98 8:53  Side 27

Multiroom Operation

28

The AVI250 is unique among A/V
amplifiers in that it is equipped to operate
as the control center for a sophisticated
multiroom operation with accessories as
simple as a remote IR sensor or as
sophisticated as a specialized external
amplifier and a special version of the
world-famous AudioAccess wall mounted
keypad controls. Although some
multiroom installations will require the
services of a specially trained installer, it
is possible for the average do it yourself 
hobbyist to install a simple remote room
system. For additional information on
using the AVI250 in multiroom
installations we suggest that you contact
your dealer or custom installer.

Installation
The key to remote room operation is to
link the remote room to the AVI250’s
location with wire for an infrared receiver
and speakers or an amplifier.

IR Link
The remote room IR receiver should be
connected to the AVI250 via standard
coaxial cable. Plug the IR connection
cable into the mini jack inside the 

area in the middle of the unit’s rear
panel.

œ

If other Harman Kardon compatible
source equipment is part of the main
room installation, the 

jack on the rear panel 

∑

should be connected to IR IN jack 

on the CD player or cassette deck. This
will enable the remote room location to 
control source equipment functions as
well as the remote room input and 
volume.

NOTE: All remotely controlled
components must be linked together in a
daisy chain. Connect the 

jack of

one unit to the 

of the next to

establish this chain.

Audio Link
Depending on the distance from the AVI
250 to the remote room, two options are
available. 

The preferred method is to run high
quality, shielded audio interconnect cable
from the AVI250’s location to the remote
room. At the remote room, connect the
interconnect cable to a stereo power
amplifier. The amplifier will be
connected to the room’s speakers. No
volume control is required, as the AVI250
and the remote IR link will provide that
function. At the AVI250, plug the audio
interconnect cable into the 

jacks 

®

at the top left corner of the AVI

250’s rear panel.

NOTE: The remote power amplifier must
have signal sensing capability or be left
on constantly to assure automatic
operation at the remote room.

As an alternative, the amplifier may be
placed at the same location as the AVI
250, with a standard audio interconnect
between the two. Speaker wires should
then be run to the remote room. High
quality AWG-12 speaker wire is preferred.

IMPORTANT NOTE: Any cables run
inside walls should carry safety
certification that is required by the local
building and electrical codes. To avoid
interference, audio and speaker cables
should not be parallel to, or in the same 
conduits with AC cables. If you have 
any questions about multi-room wiring 
consult your dealer, custom installer or 
a licensed contractor or electrician.

Set-up 
Once the equipment connections have
been made, the AVI250 needs to be
configured for multiroom operation by
following these steps:

1. Press the 

r

to bring the

MAIN MENU

to the screen (Figure #1).

Press the 

¤

button 

q

four times until

the on screen 

>

cursor is pointing to

MULTI ROOM SEL

and press

r

. The video screen 

will move to the

MULTI ROOM

SELECTOR

menu (Figure #17).

Engelsk manual AVI250  11/01/98 8:53  Side 28

Multiroom Operation

29

2. Press the 

›

button 

q

until the

desired input source for the multi room
system is selected.

3. When the source is selected, press the

¤

button until the 

>

cursor is next to

RETURN TO MAIN MENU

. Press

. 

4. At the 

MAIN MENU

, press the 

¤

button once so that the 

>

cursor is

pointing to 

SET UP MENU

. Press

.

5. This will bring 

SET UP MENU 1

(Figure #2) to the screen. Press the 

¤

button twice until the 

>

cursor is

pointing to 

GO TO SET UP MENU 2

.

Press 

.

6. When 

SET UP MENU 2

(Figure

#3) appears, the 

>

cursor will be pointing

to 

M ULT I R M V O L

. Use the 

‹

or 

›

buttons 

q

on the remote to select one of

the following choices.

a. If the remote room is equipped
with a remote receiver only, volume
control will be performed by the
AVI250 using a remote control in 
the second room. For this type of
control, select the 

VARIABLE

option. 

b. If the volume control in the remote
room will be controlled by the
amplifier in the remote room, or if a
specialized amplifier such as the
AudioAccess AVX-603 will be used,
select 

FIXED

.

7. After making a selection, press the 

¤

button once so that  the 

>

cursor is next

to 

SET LEVEL

.

8. Use the 

‹

or 

›

buttons 

q

on the

remote to establish a volume level for
turn on or constant level, as determined
by the previous selection.

a. If 

VARIABLE

volume has been

selected, this setting will determine
the volume level for the remote room
each time it is turned on.

b. If 

FIXED

volume has been

selected, this level will be the constant
volume level at the remote room
location unless a local volume
control is installed. Set the level as
close to “0 dB” as possible without
distorting the output signal.

9. When the level has been entered, press
the 

¤

button so that the 

>

cursor is

pointing to 

RETURN TO MAIN

MENU

and press 

.

10. At the 

MAIN MENU

, use the

navigational arrow buttons on the remote
to exit from the main system.

The AVI250 is now configured for multi
room operation.

Operation
Multi room operation is simple, and it
may be controlled from either the main
listening room where the AVI250 is
located, or from a remote room where an
IR receiver or Harman Kardon or Audio
Access keypad has been installed.

Main Room Operation
In this option, the remote room feed is
controlled from the main listening room
using the AVI250’s front panel controls.

M U L T I   R O O M   S E L E C T O R

> S E L E C T E D : T U N E R   T V

                    C D         L D

                    T A P E 1   V C R 1

  O F F             T A P E 2   V C R 2

                                A U X

R E T U R N   T O   M A I N   M E N U

T U R N   M U L T I - Z O N E   O F F

?

U S E R S   M A Y   B E   L I S T E N I N G

I N   O T H E R   R O O M S

P R E S S   A G A I N   T O   P R O C E E D

O R   " C L E A R "   T O   C A N C E L

Engelsk manual AVI250  11/01/98 8:53  Side 29

Multiroom Operation

30

To activate the remote room feed, press
the

button on the front panel

9

.

This will send the signal of the AVI250’s
currently selected input source to the
remote room at the volume level
established in

SET UP MENU 2

.

The 

MULTI

indicator on the front panel

display 

§

will flash to indicate that the

multiroom system is turned on in the
variable mode, and that Source Linking
is in effect. With Source Link, any change
to the AVI250’s input selection will also
change the feed to the remote room
locations. If the input source is changed
from the remote room, the 

M ULT I

indicator will remain lit, but stop
flashing.

If the unit is turned off in the main
listening room, the feed to the remote
room will continue, although the

MULTI 

indicator will now remain

constantly illuminated.

To turn off the feed to the remote room
either while the AVI250 is still on, or after
it is turned off, press the 

button

on the front panel. If the 

button

is pressed while the AVI250 is still on and
the on screen video system is engaged, a
warning message will appear on the
video display (Figure #18) to remind you
that people may still be listening to the
system in the remote room location.

Remote Room Operation 
In this option, the remote room feed is
controlled by the use of an AVI250
compatible remote control. The remote
commands must be transmitted to the
AVI250 via a coaxial link connected to
the 

input on the AVI250’s rear

panel.

Using the remote control in the second
room press the 

button to

turn on the remote room feed. This will
activate the multi room portion of the AVI
250 whether or not it may be on in the
main listening room. 

The initial feed to the remote room will
be the last station selected by the tuner.
Any other AVI250 input source may
subsequently be selected using the source
buttons on the remote control.

The initial volume at the remote room
will be the level established using the
options in 

SET UP MENU 2

.

If IR connections have been made to the
source playback equipment, it is also
possible to control the functions of those
units via the second room remote.
Consult with your dealer or custom
installer for additional information on
this type of installation.

When the remote room is controlling the
AVI250 via the IR link, the 

MULTI

indicator on the AVI250’s front panel will
remain constantly lit.

NOTE: Whenever the AVI250 is in a
multiroom mode, the 

MULTI

indicator

will flash briefly whenever a command is
transmitted by the remote room location
and received by the AVI250.

Engelsk manual AVI250  11/01/98 8:53  Side 30