Read Harman Kardon SUB-TS 1 Service Manual online
8
Amplifier/Subwoofer
Harman Kardon
SUB-TS1
SUB-TS1 TEST SET UP AND PROCEDURE
OUTPUT FROM
AMPLIFIER
AMPLIFIER
FROM
PRE AMP
PRE AMP
SPEAKER
AMPLIFIER
CD PLAYER
PRE AMP
AC VOLT METER ( 6V )
SPEAKER
UNDER TEST
LINE
LEVEL
SPEAKER LEVEL
R
L
MIN
MAX
LINE LEVEL
INPUT
SUBWOOFER
LEVEL
SPEAKER
LEVEL
OUTPUT
SPEAKER
LEVEL
INPUT
L
L
C
C
R
R
ON
AUTO
General Function
UUT = Unit Under Test
1. Connect both right and left line level inputs (RCA) to
1. Connect both right and left line level inputs (RCA) to
signal generator and UUT. Use Y-cable if necessary
from mono source. VOLUME control should be full
counterclockwise.
2. Turn on generator, adjust to 200mV, 50 Hz.
3. Plug in UUT; red LED should be ON. Turn VOLUME
3. Plug in UUT; red LED should be ON. Turn VOLUME
control full clockwise.
4. LED should turn Green; immediate bass response should
be heard and felt from port tube opening.
5. Turn off generator, turn VOLUME control fully
counterclockwise, disconnect RCA cables.
6. Connect one pair of speaker cables to both high level
input terminals on UUT. Cables should be connected to
an integrated amplifier fed by the signal generator.
7. Turn on generator and adjust so that speaker level output is 3.0V, 50 Hz. Turn VOLUME control full clockwise.
8. Green LED should light, immediate bass response should be heard and felt from the port tube opening.
8. Green LED should light, immediate bass response should be heard and felt from the port tube opening.
Sweep Function
1. Follow steps 1-4 above, using a sweep generator as a signal source.
2. Sweep generator from 20Hz to 300Hz. Listen to the cabinet and drivers for any rattles, clicks, buzzes or any
2. Sweep generator from 20Hz to 300Hz. Listen to the cabinet and drivers for any rattles, clicks, buzzes or any
other noises. If any unusual noises are heard, remove driver and test.
Driver Function
1. Remove driver from cabinet; detach + and - wire clips.
2. Check DC resistance of driver; it should be 3.3 ohms.
3. Connect a pair of speaker cables to driver terminals. Cables should be connected to an integrated amplifier fed by
2. Check DC resistance of driver; it should be 3.3 ohms.
3. Connect a pair of speaker cables to driver terminals. Cables should be connected to an integrated amplifier fed by
a signal generator. Turn on generator and adjust so that speaker level output is 5.0V.
4. Sweep generator from 20Hz to 1kHz. Listen to driver for any rubbing, buzzing, or other unusual noises.
Click on the first or last page to see other SUB-TS 1 service manuals if exist.