Surround Sound Decoder

The function of the routine begins up and transportation the music encompass indication quality information on the expert amount routine. This will travel the eventually left route linked with LCH Style TL072 IC1A IC1B and linked with the right route Rch. The results of these functional amps offer as the feedback shield for the next periods of the routine. IC2C is accountable for the sum of the alerts from eventually left and right to strength the center presenter result, while IC2D is accountable for increasing the stage difference between eventually left and right, which is protected in the two programs and be fed to the back sound speakers. It is necessary to ensure that the adverse devices from the back sound speakers is not based, since it will only work in similar with the main speaker

The result of the strength unit controlled IC2D takes sound to back sound speakers. This would lead to the design of sense of separating, according to the size of the room. This will integrate indication firm IC5 MN3004 sound wait that has 512 steps. From IC4 MN3101 is a time indication, which provides synchronization of IC5 as it features as an oscillator in the routine. C17 diverse capacitor handles the wait in the routine. The use of filter in the routine is to avoid the disturbance that happens during the process.

These filter can be altered to cut the wavelengths above 8 kHz and below 100 Hz, to be able to travel the back presenter. The back presenter is small and that their admittance is protected with a bandwith of 100 Hz to 8 KHz. The filter are designed around the IC6A / B is also an result shield. A potentiometer is placed on each result to aid in the modification and control of sound speakers and amps. The energy provided in the routine is 15 V and each result can travel a single strength firm.

Parts :

R1-2-7-8-12-13-18-19-20 : 47Kohm
R3-4-5-6-21-22-34-35       : 10Kohm
R9-10-11-14-15-16-17      : 15Kohm
R23-24-25-33-36               : 100ohm
R26-27-28-31-32               : 100Kohm
R29-30                                : 5.6Kohm
C1-8                                   : 47uF/25V
C2-7-9-14-23                     : 47nF
C3-6                                   : 1uF/100V

C4-5-10                             : 33pF
C11-12-15                         : 10uF/25V
C13                                    : 82nF
C16                                    : 18pF
C17                                    : 100pF mini adjustable capacitor
C18                                    : 2.2nF
C19                                    : 4.7uF/25V
C20                                    : 100nF
C21                                    : 10nF
C22                                    : 180pF
C24                                    : 150nF
RV1-RV2                           : 2 X 10Kohm  Log. pot.
RV3-4                                : 10K Log pot.
D1                                      : 1N4148
IC1-6                                 : TL072
IC2-3                                 : TL074
IC4                                    : MN3101
IC5                                    : MN3004