Quote:
The old Sky+ only powered the Old Sony Prologic,,
from time to time..
by a crude 2 wire outputs from sky+..
You may call it crude but it is essential to have the same connection between the Humax and the surround amp if you want it to do the same as the Sky box did.
But, as suggested by graham, having an optical link between the two is better as it should give you full Dolby Digital 5.1 when broadcast and fallback to Dolby Prologic when not. Assuming your surround system is capable of accepting DD5.1 from an external source that is. Which is a bit disappointing if you have gone ahead and got a new surround system without properly understanding what you needed it to do.