Maybe right now its a balance problem but, with 100 watts up front "rear fill" isn't doing it for me also it forces me to turn the gain way down on the front speakers. So I think I'll be looking into a bigger amp doing 60 watt rms on four channels (I can get a JBL for 100 bucks) or is the 20 watts not worth it, should i keep working on the tunning with the bridge engaged. Also the reason I say 60 watt rms is because my rear speakers are rated for 60 rms and fronts are for 100.