Pamphlets

The following recently issued pamphlets may be of interest to readers of “Electrical Engineering.” All inquiries should be addressed to the issuers. Sound Information. Bulletin, 4 pp. Presents information widely used in the design of sound equipment in a brief form. The contents include a table showing impedance versus decibel loss, with values calculated for impedance mismatch, minimum “T” loss, and bridging-pad loss. Also included are data on mixer circuits showing circuit diagrams and applications. The Daven Company, 191 Central Avenue, N. J.