sound system

[stoneking1]

is their anyone that has any information about an old sound system used by some RR users that used this type of sound. (tri-tec electronics) Model ss-500.  I have a very old system and would like to use this for my sound. my email is stoneking1@cox.net.  would like to hear of anyone that has one of these old systems.  If so is there any doc's that you would like to share with me.