I’m reading that you enjoy listening at higher levels than the Arros are comfortable. 4.5" single midbass drivers are a real constraint here. Port chuffing means the box was tuned too low, or the vent was too small. Again, the Arro’s box volume just looks too big for the teensy driver, unless they blocked it off inside.
Dynaudios are generally tuned warm and fat. The Contours use 6.5" woofers, rear-ported, which I’d have thought would be fine, so I wonder if they were exacerbating a room mode, too close to a corner or boundary. What does it sound like in your room when you clap your hands? Is it more muffled than sharp? Perhaps it’s overdamped.
How big is the room? How much flexibility do you have in terms of speaker placement from rear and side walls? What’s your listening distance? Also, what amp are you using?
Dynaudios are generally tuned warm and fat. The Contours use 6.5" woofers, rear-ported, which I’d have thought would be fine, so I wonder if they were exacerbating a room mode, too close to a corner or boundary. What does it sound like in your room when you clap your hands? Is it more muffled than sharp? Perhaps it’s overdamped.
How big is the room? How much flexibility do you have in terms of speaker placement from rear and side walls? What’s your listening distance? Also, what amp are you using?