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New flat screen to old surround

Solution
Without makes and model number I can't give you an exact answer.
The general way would be to use an DAC to convert the optical audio out of the TV to analog.
If the old surround has a digital input but it is the wrong kind (coax RCA or optical) then your would need a converter to make the connection.
Without makes and model number I can't give you an exact answer.
The general way would be to use an DAC to convert the optical audio out of the TV to analog.
If the old surround has a digital input but it is the wrong kind (coax RCA or optical) then your would need a converter to make the connection.
 
Solution

Thanks