Wiring and amp specs

Hey I have some questions concerning some knowledge on some stereo wiring ****. Its been so long since I have been into most of its just slipped my mind.

Thx in advance

I'd suggest you wire your two speakers for a total 4-ohm load (series-parallel) and connect them to the amplifier bridged.  For a sealed enclosure I would turn off the subsonic filter (or set it to 10Hz) and then activate the low-pass set to between 80 and 100 Hz.  Then set your gain properly.

Looks like a decent two channel amp with a built-in subsonic filter.  Since you are using the subs in a sealed box you can leave the subsonic off.  Leave the highpass at flat because you won't be using it.  Instead you'll use the lowpass filter for subs, and set the frequency to cross over to the mid drivers.  That will be the amp that powers your front speakers.  Start out at about 80 Hz on both filters.  The 24 db/oct is the crossover slope, which means that the sub output will be reduced sharply above the cutoff point (the 80 Hz I mentioned).

How many DVC 4 ohm subs do you want to use?  The bridged output of the amp is 4 ohm stable, which is the same as 2 ohm per channel.  You want to wire your subs so that the net load is 4 ohms or higher and bridge across the channels.  So if you are using two DVC 4 subs, each sub is wired series and then parallel the two together for a 4 ohm load.

https://www.the12volt.com/caraudio/woofer_configurations.asp?Q=2&I=42

SO wiring it as the series/parallel as you both have mentioned, would put me at how many watts for that one channel? 400w? And which adjustment is the gain? Seeing as how it is not just labeled as "gain"?

Max output doesn't mean anything.  This is a 2 X 50 watt amp at 4 ohm per channel.  A bridged load puts an equal amount of load onto each channel...so when you bridge a 4 ohm load onto this amp it is outputting 85 watts out of each channel (at 2 ohm per channel output).  The total output is 170 watts which is shared by all the subs you have connected.  With two subs, each one gets 85 watts.

With this way of stating "max" output, the manufacturers throw a confusing wrench into the gears.  This is not the best way to power two subwoofers.  That is to say, this amp should be used for a pair of coaxial or component speakers, or maybe one SVC4 sub.  It's workable but it doesn't sound like what you were hoping for.