EIS MOTOR CONTROL RELAY FOR 147 FAMILY LESLIES

Originally developed by Electronic Instrument Service, the EIS-147 provides a silent and extremely reliable alternative to the old style electromechanical relays originally supplied in Leslies utilizing 147 and 251 type amplifiers.  Ideal for use in studio, church, and professional applications where quiet switching or ultimate reliability is essential.

These units are fully compatible with existing stock Leslie control circuits and therefore require no changes at the console for standard operation.  For standard 2 speed (fast / slow) operation, EIS equipped Leslies may be freely mixed with Leslies in the same family that still use an original electromechanical relay.

For those wishing for more than basic relay replacement, the EIS-147 has the capability to add brake-to-off and coast-to-off functions without additional wiring between the console and the Leslie.  To utilize these advanced features, a suitable 3-position switch must be installed at the console.  Pre-wired 3-position switch mechanisms are available here for conversion of existing 2-position half-moon switches.