ADP 303 (serv.man3) - Harman Kardon Audio User Guide / Operation Manual. Page 10

9

Installation & Setup 

Use this setup for connection to an 
external surround sound processor or
preamplifier.

1. Connect the AC-3 RF output of a com-
patible LV player to the ADP303 AC-3 RF
In Jack 

¡

.

2. Connect the optical or coax AC-3
output of a DSS, DVD player or HDTV
receiver to the respective input jack

™£

on the ADP303.

3. Connect the surround outputs of the
external processor to the Line Input Jacks

¢

of the ADP303.

4. Remove the connections from the
external processor to the audio power
amplifiers and connect the Line Out 

∞

jacks of the ADP303.

5. Set the Speaker mode switches

§¶•ª

to their proper positions

based on the type of speakers in use.

6. Using the small Allen key tool supplied
with the ADP303, carefully remove the
cover panel for the Level Trim Controls

˙

. Set the cover aside so that you may

replace it later.

7. Turn on the power to both the ADP303
and the external processor.

8. Select one of the three digital inputs
on the ADP303. 

∂

.

9. Set the Main Volume Control 

î

on

the ADP303 to the 12 o’clock position.

10. Press the Test button 

ƒ

and hold it

for a few seconds. This will start the test
tone sequence. 

Note that a test signal noise will be heard
from the speakers. Verify that test signal
circulates in a clockwise direction,
stopping for five seconds at each speaker. 
If the sound is heard out of order, (i.e.,
moving from right to left, or appearing
out of order), turn the unit off and check
the connection from the ADP303 output
jacks to the inputs of your audio power
amplifiers. 

11. Listen to the sound as it moves
between the speakers. Ideally, the output
from each speaker should be equal. If the
output is NOT equal change the level by
carefully turning the Output Level Trim
Control 

˙

for the speaker that needs

adjustment.

NOTE: If you have trouble getting suffi-
cient output level from the ADP303 trim
controls increase the master volume level
using the ADP303 volume control 

î

. If

the volume level is too loud reduce the
level of the ADP303 master volume 

î

.

12. When you have completed the adjust-
ments press the “Test” 

ƒ

button once to

stop the Test Tone.

13. Carefully replace the cover for the
Level Trim Controls.

14. When listening to a Dolby Digital
source use the volume control on the
ADP303 

î

. For all other listening set the

ADP303 to BYPASS 

ç

, or turn it off. Use

the external processor’s volume control
for all other (non-Dolby Digital) modes.

L            R

SURROUND

SUB

WOOFER

CENTER

L            R

SURROUND

L            R

FRONT

L            R

SUB

WOOFER

CENTER

AC-3

DIGITAL IN

OPT

MODEL NO.: ADP303
HARMAN KARDON
NORTHRIDGE
CALIFORNIA, USA
MADE IN JAPAN

AC-3

DIGITAL IN

COAX

AC-3
RF IN

FRONT SPK.

LARGE

SMALL

SURR. SPK.

CENTER SPK

SUB. W SPK

IN

OUT

OUT

LARGE

NON

SMALL LARGE

NON

SMALL

OFF

ON

AC-3 Data

AC-3 

RF Output

SURROUND

L            R

FRONT

L            R

CENTER

LINE IN

IN

AC OUTLET

UNSWITCHED

24093_ADP 303 Eng.  27/02/1998 10:34  Side 10