Philips FWT6600 Service Manual page 10

AUDIO SIGNAL PROCESSING
MP3-USB Mini Hi Fi System with Digital Tuner , 3 CDC-MP3,(2×235W+300W)only FWT6600, Universal Class D Power Amplifier
3 ) IS ( Incredible Sound )
Select AUX as input source.
Inject sine wave 600mV-2.5V at 1kHz to AUX-IN socket, one channel at a time (input level 600mV for /37/05/12;2V-2.5V for /55/77/78 )
Set DSC to JAZZ ( Flat ) mode and switch of DBB, OSM & INCREDIBLE SURROUND.
Adjust volume level to obtain 500mW across 3 OHM load at L/R speaker output.
Inject sine wave 2V to AUX-IN socket withfrequency indicated in Table 3 .
Table 3 ( Tolerence ± 4 dB )
FREQ
60 Hz
1 kHz
12 kHz
Note : The above specs also apply to right channel.
4 ) DSC Mode ( Jazz , POP Rock, Techno and Optimal )
The VAC modes are software controlled by switching the combination between DBB and DSC modes
as show in Table 4.
DSC MODE
Jazz
Rock
PoP
Techno
Samba/Optimal
Note : When these modes are activ DBB and DSC will not be displayed
5 ) MAX ( Maximum Sound ) ( Tolerence ± 3 dB )
Select AUX as input source.
Inject sine wave 600mV-2.5V at 1kHz to AUX-IN socket, one channel at a time (input level 600mV for /37/05/12;2V-2.5V for /55/77/78 )
Set DSC to JAZZ ( Flat ) mode and switch of DBB, OSM & INCREDIBLE SURROUND.
Adjust volume level to obtain 500mW across 3 OHM load at L/R speaker output.
The 1W level will be used as 0 dB reference
Inject sine wave 2V-2.5V to AUX-IN socket withfrequency indicated in Table 5 .
FREQ
60 Hz
1 kHz
12 kHz
Class No
FWM/6500/ All Version
NAME : ZC.ZENG
KT CHECK
1-10
INPUT LEVEL
LEFT RIGHT
2V -
2V -
2V -
DBB Level preset
DBB OFF
DBB 3
DBB 2
DBB 1
DBB 1
FR/FL at stereo mode)
Max OFF
-1
0
-1
GENERAL PART 1 - AUDIO SIGNAL SPECICFICATION ( 2 )
11 7
DATE :
OUTPUT LEVEL
IS OFF
LEFT RIGHT
- 1.0 dB -
0 -
- 0.5 dB -
VAC MODE
Concert
Hall
Cinema
Max ON Max OFF
+18
SH 190 - 7
IS ON
LEFT RIGHT
+2.0 dB -15.0 dB
+ 3.5 dB -1 dB
+ 3.0 dB -7.0 dB
DBB Level preset
DBB OFF
DBB 1
DBB 1
SUB at stereo mode)
Max ON
+27
+8
Ver Issued Date
1
23-Sep-11
2
3
A4