BenzWorld Senior Member
Date registered: May 2007
Vehicle: M113 SL500
Mentioned: 1 Post(s)
Quoted: 156 Post(s)
Ok, this has been discussed on this forum before. You ought to do a search, but you'll get more volume if you use the harness that has speaker wire connections instead of RCA, or you can cut off the rca connectors and wire in your speaker wires. The bose amp needs more signal volts than the preamp signal provides. 5v preouts on the 80prs sounds like a lot compared to other headunits with 2-4v, but this is 5v max, and speaker level voltage is much higher.
If you're going to remove the headunit to do so, just make sure that network switch is set to standard. Before you do that, you can also check if your output levels are maxed out on the 80prs. Go to audio settings and Front HPF2 and turn up levels to 0.
If you're going to bother with an 80prs, I'd suggest ditching the bose amp and speakers and going with the setup where you can start using all the features the 80prs has. The way you want to set it up now wouldn't be any better than if you bought one of Pioneer's ~$100 units, except for maybe time alignment and # of EQ bands.