View Full Version : Question about my old headunit, 7977

03-05-2008, 03:24 AM
i got this old thing layin in my room, and looked at it the other day....there's a switch on the bottom that say eq/div and norm

so...yeah, what's it do?

03-05-2008, 07:52 AM
That is for the Ai-Net if you are using an outboard processor like the older Alpine PRA-H400 or 600 or the newer 501 or 701.

03-05-2008, 02:24 PM
oh....so what do those things do?

03-06-2008, 09:08 AM
They add extended capabilities and superior outboard DAC's to those that are inside the deak. They can allow you to run 3 way active systems, do time correction, equalization, etc, etc. It all depends on what processor you use. For regular use leave the switch on "Norm"

03-06-2008, 01:24 PM
what would be the cheaper of those, to get me active?

03-06-2008, 02:21 PM
Shoot for the older versions then like the PRA-H400 or PXA-H501 they sell in the $100 - $200 range typically.