Is it possible to upgrade my old AVR to make it play with Dolby Pro Logic II?
The old AVR can not be upgraded to Dolby Pro Logic II. If you would like to use Dolby ProLogic II, you will have to buy a new receiver. We however think that the benefit will be neglectable. Our AVR receivers contain since two years already our own Logic 7-surround mode. This Logic 7 mode has the same specifications as DPL II, but uses different decoding. I do understand that you would like to buy a receiver with DPL II, as the DPL II is better marketed by Dolby. But a better marketing does not mean that DPL II is the best you can get in this field. Various test and reviews have been proving that Logic 7 outperforms the first DPL II modes, which are on the market: “Logic 7: No doubt, this 5 channel decoding system, which is more recent and substantially more sophisticated than Pro Logic, reproduced analog filmtracks with dramatically increased transparency and allowed extremely good sound localisation. That means that, with a little luck, the analog surround recording can almost sound