1. You're going to get big peaks at 47 and 57Hz.
2. Bass at all frequencies is reinforced at your seating position against the wall. Only sitting in a corner would get you stronger bass.
You're not going to get adsorbtion from fiberglass or foams at bass frequencies. You need treatments like Helmholtz resonators for the peaks and diapraghm adsorbers for wide-band control.
Parametric equalization is a useful crutch. The Behringer Feedback Destroyer works for sub-woofers but has too much noise at high frequencies.
2. Bass at all frequencies is reinforced at your seating position against the wall. Only sitting in a corner would get you stronger bass.
You're not going to get adsorbtion from fiberglass or foams at bass frequencies. You need treatments like Helmholtz resonators for the peaks and diapraghm adsorbers for wide-band control.
Parametric equalization is a useful crutch. The Behringer Feedback Destroyer works for sub-woofers but has too much noise at high frequencies.