Stereo Upgrade - Amp & Sub: SubWoofer Design & Installation

[andremike]

I pulled the panel underneath and have more questions....

Where to begin... first off. Only the rca wire for front and rear are used. Why wouldn't they use the sub rca cables to the amplifier?

Zone 2 is not used..

 

[LD50]

They're likely running your sub through this method, per the manual:

Sub Input: If there is no dedicated output on your source unit for a subwoofer, use the SUB INPUTswitch to set your subwoofer input to either SUB INPUT or AMP INPUT 2.

Why? It's an extra cable and extra install and most of these companies will use the easiest/cheapest way to install the stereo over the correct way. You might be able to gain some additional flexibility and performance from your current sub by running another RCA to the amp and switching it to sub input. It wouldn't take much to try it.

 

[andremike]

Either that, or there was an older headunit in there that didn't have a suboutput...

So I should get another set of rca cables and run front to amp 1, rear to amp2, and suboutput to sub input on amp

I am still not sure how speakers 5 and 6 are hooked up.. certainly not to zone 2, which is where I. Would like them... l but would probably need another amp

 

[andremike]

Here is a pic of my current sub.. not sure how good it is

 

[LD50]

Previous head unit is a possibility. I assumed it was factory since Bennington previously used Kicker. There are a couple of possibility to how your speakers may be run. You either have 2 pairs of speakers each tied together in parallel or series to 2 channels on your amp or 4 speakers wired to 4 channels on your amp and the last 2 wired to the amp in the head unit. Last option would be 4 speakers wired to the head unit and 2 speakers wired to bridge the 4 channels of your amp into 2. I'd guess the last is least likely.

The only way to find out for sure is to start tracing speaker wires and see where they go.

 

[andremike]

I received this from Bennington.. I'll assume it's right.. for now I will leave the 6 speakers as is.. once I rewire things tomorrow for the front, rear and sub rcs wires.. , I'll see how it sounds.. I still want to add 2 new subs..

 

[Seadoorxpguy]

If you add another sub I would split up the mid ship speakers and give each speaker its own channel instead of having 2 speakers per ch. That drive the Ohm resistance up wiring them like that and reducing amp output power

 

[andremike]

So I rewired my head unit and amp.. wow what a difference.. I still want more bass though.. looks like my current sub is a 8"