Apple Logic Express 7 - Manual (Page 65)

Chapter 9 Reverb 65
In the vast majority of mixes, your best bet is to set a lower level for the low frequency
reverb signal. This enables you to turn up the level of the bass instrument—making it
sound punchier. This also helps to counter bottom-end masking effects.
The 001/011 button offers four additional parameters.
ER Scale allows you to scale the early reflections along the time axis, enabling the Room
Shape, Room Size and Stereo Base parameters to be influenced simultaneously. Dry and
Wet can be used to control the amounts of the original and effect signal individually,
and independently of the Mix parameter. The Diffusion slider is also available in the
GoldVerb plug-in. A detailed description of its function can be found on page 63.