Originally Posted by Warp69
You can't use the diagram as such - the Random Ambience actually has three parts : DELAY (DRY) + ER + REV. This is not displayed in the manual where ER + REV is shown as one block.
When the Reverb Level is way down, you still get the sound of the ER part. As I can understand from your post - there're infact randomized delay lines in the ER part of the Random Ambience algorithm in the 300L, just like in the 480L.
Just checked out the IK Multimedia CSR Room. Of course the Earlies are modulated here, even if the tail is set to zero! And it sounds just great.
It has not to be underestimated what you are getting with the CSR suite.