Shane –
I have installed countless Pinnacle CineWave systems, and EVERY DAMN ONE OF THEM had an audio mixer on it. There is no way to route, amplify, and attenuate all these different analog sources (from +4 to -10 dBu) without a bunch of balancing amps (which just cost too much money) or a CHEAP MIXER.
Many people use inexpensive Behringer mixers that range from $50 to $299, which work teriffic for this application. You can also get more expensive mixers from companies like Mackie, Soundcraft, Yamaha, Allen Heath, and so many others. You can contact your dealer, order mail order, or just go to your local music store – mixers are EVERYWHERE – and YOU NEED ONE. This will resolve all of your problems, and had you bought one for your Pinnacle CineWave system (like everyone else did) – you could still be using the SAME MIXER – becuase unlike these Mac computers, the mixers DONT GET OUTDATED and are very useful, no matter what comes out.
I am VERY SURPRISED that you are saying that your signal is TOO HOT. The output of the Mini DV and the Hi8 mm are both -10dBu, and the AJA I/O expects to see a +4dBu signal, so your “zero level” should be 14db TOO LOW – not high ? If you are trying to layback to your Mini DV, or Hi 8, THEN the signal will be TOO HOT going into these pieces of equipment.
Your Pinnacle CineWave Break Out Box had XLR connectors on it, just like the AJA I/O does. The output of the AJA I/O is no different than the Pinnacle CineWave. +4dBu.
Buy a mixer (or get some line amps).
Bob Zelin