Replaced my home theater’s subwoofer

My Infinity TSS-SUB750 subwoofer started having problems with hum and high pitch noise. The noise was getting worse and distracting so I replaced the speaker. Infinity doesn’t sell home theater speakers anymore. Instead, I bought Infinity’s REFERENCE SUB R10 which was similar in size and wattage. The R10 has a low-frequency effects (LFE) crossover setting, but it seems to have too much midrange. I’m using the LFE setting because my receiver has it.

Infinity subwoofer
REFERENCE SUB R10
Infinity subwoofer
REFERENCE SUB R10

My new Sony Receiver

Sony STR-DN1030
Sony STR-DN1030

I replaced my Pioneer VSX 816 A/V Receiver with a Sony STR-DN1030. I think the Pioneer was going bad with popping and static coming through the speakers. The new Sony performs beautifully with clear sound. The surround sound is better too. Setup and manual are confusing but the sound quality makes up for that.