ISEN-ASTC-L is a service of the Association of Science-Technology Centers Incorporated, a worldwide network of science museums and related institutions. ***************************************************************************** I need to combat noise drowning out exhibits. Has anyone experience with Smart Amps, that raise the level of sound in exhibits by measuring ambient sound levels? I found http://www.stoplisten.com/pdfs/smartampv2_instructions.pdf but there maybe others. Any thoughts or experiences? Martin -- Martin Weiss, PhD Science Interpretation, Consultant New York Hall of Science *********************************************************************** For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org. Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org. The ISEN-ASTC-L email list is powered by LISTSERVR software from L-Soft. To learn more, visit http://www.lsoft.com/LISTSERV-powered.html. To remove your e-mail address from the ISEN-ASTC-L list, send the message SIGNOFF ISEN-ASTC-L in the BODY of a message to [log in to unmask]