|
|
|
Who's Online
There currently are 5957 guests and
2 members online. |
|
Categories
|
|
Information
|
|
Featured Product
|
|
|
 |
|
|
There are currently no product reviews.
 ;
It was complete service manual with all needed service informations. Thanks.
 ;
El manual esta muy detallado, los numeros de partes y los esquemas de despiece son correctísimos y muy claros, tanto para los técnicos experimentados como para los novatos.
;
Ottima qualità grafica e completo nelle notizie. Costo abbastanza contenuto.
;
Great and quick support. The maual was exactly what I was looking for and my problem
solved. Many thanks.
;
Very good service Within one day i received a pdf of the users manual and electric circuits so I was able to measure the different voltages in the printed circuit and find out the fault Payment was also reliable and easy.Without the manual i could not have repaired.So thanks to "Search for a manual"
Powered Subwoofer
BU2
BU2 TEST PROCEDURE
TEST PROCEDURE
Equipment needed:
n n n n
7. Turn on generator and adjust so that speaker level output
is 2.0V, 50 Hz. Turn VOLUME control full clockwise.
8. Green LED should light, immediate bass response should
be heard and felt from port tube opening.
Function/signal generator/sweep generator Integrated Amplifier Multimeter Cables - line level (RCA) and speaker cables
signal source.
Sweep Function 1. Follow steps 1 - 4 above, using a sweep generator as a
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.
General Function
UUT = Unit Under Test
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 50mV, 50 Hz. 3. Plug in UUT; red LED should be ON. Turn VOLUME
control full clockwise.
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 a signal generator. Turn on generator and adjust so that speaker level output is 5.0V.
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.
4. Sweep generator from 20Hz to 1kHz. Listen to driver for
any rubbing, buzzing, or other unusual noises.
6. Connect one pair of speaker cables to either high level
input terminal on UUT. Cables should be connected to an integrated amplifier fed by the signal generator.
3
|
|
|
> |
|
