inputs.text: great highs dissapointing midslows - vehicles boston components coaxils thehem noticed years mids lows produced getting worse time goes speakers 2010 corolla powered ppi 4480 receiving signal kenwood excelon kdc 994 xover amp set 140hz matching dsp headunit sound extrehemely good minus lack midbass planning purchasing boston 5 channel corresponds power requirehements sc60 soon update time