I know there is a legacy product section of the forum but it doesn't seem to get much traffic. Just wondering if any of the LMF-1 sub owners out there from way back have found good performing replacement plate amps for the stock amp that is prone to failure? Been looking on Parts Express and others but haven't settled on a good option yet. Ideally, since this is a 20 year old sub I'd like to stay under $200. Thanks