Velleman projects K4305 Assembly instructions - Manual (Page 12)

_______________________________________________________________________________________________________________________________________________________
12
Connect the unit to a speaker output (HIGH input):
14. Connecting to a speaker level output and connecting a power
supply from 10 to 15VDC / 250mA max..
12V/250mA
12V/250mA
12V/250mA
FROM POWER AMPLIFIER
MAINS
MAINS
SPEAKER RIGHT
-
+
INPUT (0)
10...15VDC
1000uF/25V
1N4007
+
1000uF/25V
1N4007
+
POWER
SUPPLY
+
LOW IN
HIGH IN
+
P4304
SPEAKER LEFT
+
-
HIGH IN
LOW IN
+
P4304
RIGHT
LEFT
Connect the unit to a suitable supply voltage between 10VDC and
15VDC, this can also be a standard DC adapter. You can also build
your own power supply, see diagram. Use a 2x12V transformer, two
rectifier diodes and a electrolytic capacitor or use a single 12V trans-
former with a bridge rectifier and a electrolytic capacitor.