Speakers are usually voiced for a cabinet. Placing dynamat or any other similar material can change the sound and not for better.
Anyone Damp the insides of your Speaker Cabinets?
Do most speakers sound best in cabinets that resonate as little as possible? Why or why not? Is there something any of you have applied to the inside of your speaker cabinets to keep them from resonating, and achieved a more pleasing sounding speaker?