I notice some resonance when playing in loud volume, no bracing yet I'm thinking if I need them as the box designer says it is optional. Will experiment lining the walls with some wool felt, hopefully will make the enclosures dead silent, wala lang akong mahanap na wool felt or equivalent locally.
I've been reading about enclosure resonance, why some speaker manufacturers use thin walls with some resonance, apparently it adds "warmth" or "brilliance" to the sound, it adds color. While resonant free enclosures are more transparent. A matter of preference.
Thanks, I have been buying that finger jointed wood from them for my shelving and drawer projects, but I don't think they make it wider than 12".
Have you noticed any resonance? Did you brace your speaker cabinets?