Do you hear someone on a phone call coming from the center channel? On a low budget it might not be worth doing anything with that speaker.
We're clearing out some old stock of CDT Audio speakers. You might find something that sounds a lot better than PPI components for a great price after we discuss it.
CDT Audio NOTICE New Products and CLEARANCE SALE
Pioneer_AVH-4100NEX, Massive Audio Core-1, Cerwin Vega V600.4, CV V1500.1D, CV Stroker ST65C, CV V465 rear fill, CV VPRO124D 2.0 cu ft @ 36 Hz