Sam,
By opening windows and sliding doors, you're probably removing reflection points that are muddying up the sound, so I'm not surprised by what you're experiencing. The same effect could be achieved by placing diffusion treatments at those same points. I'd definitely take Transaudio's advice to heart.
By opening windows and sliding doors, you're probably removing reflection points that are muddying up the sound, so I'm not surprised by what you're experiencing. The same effect could be achieved by placing diffusion treatments at those same points. I'd definitely take Transaudio's advice to heart.