User manual DALLEE ELECTRONICS ELECTRIC SOUND VERSION 3 W AUTO HORN

[. . . ] Because of its dimensions (2. 7" x 0. 9" x approx. 0. 5" high) the sound system may be limited to installations in some powered units making the need for use of a "dummy" unit or a trailing car. This unit differs from the standard DC type sound systems in that it contains automatic Horn play patterns each time the input is triggered. Triggering the play patterns is done by the use of a reed switch passing a fixed magnet. [. . . ] For in locomotive use, this separate supply is a battery. Without a battery, the sound will not work at lower track voltages. Drawings are supplied for multiple types of connections. If using batteries, we suggest the use of one 9 volt or 6 AA or 6 AAA batteries in series to maximize volume potential and battery life. When connecting the battery (DC) power leads be absolutely certain that wires connect to the proper DC input leads. Installation of the reed switches is easily done by making the appropriate wire connections and placing the reed switch in the proper location for magnet activation. When removing the reed switches, be careful not to crack the glass. Do not bend the leads at the glass ends, use a needle nose pliers to hold the wire entering the glass and then bend the wire. Bending at the glass will SOUND INFORMATION: All sounds are discussed assuming that the sound unit is fully powered at all times. If only powered from track power, the sounds will only start when sufficient track voltage is obtained. COOLING FANS (ELECTRIC): sounds range from silent (fans do not operate when not running) to full fan rpm. With no power to the track / motor the sound system will produce no sounds. As a throttle is advanced to put the locomotive in motion, a brake release will sound (see below) and the electric fans will accelerate to full rpm. When track / motor power is removed the fans will, after a period of time, ramp down in rpm and then stop. BRAKE RELEASE: sound is produced when the throttle is advanced from the idle position. This brake release should always precede locomotive movement but will only occur if the locomotive sound is actually at idle. This BRAKE RELEASE requires approximatly 1. 5 to 2 volts of input voltage (J3) to activate. HORN: sound is controlled by the reed switch trigger. Upon closure of the reed switch via an external magnet, the sound system will begin to play appropriate Horn patterns. Each activation will trigger a different Horn signal (play pattern). We used appropriate railroad patterns for a moving train. 1 BELL:sound is first activated by passing the reed switch trigger. After the bell has rung a few times, it may be triggered off by passing the reed switch over the magnet again. [. . . ] In both cases, the backside of the speaker is closed off. Mounting a speaker facing out from inside of the body. You have to seal all edges of the speaker for a proper baffle. Using the fuel tank as a speaker baffle is quite easy. In this case the speaker eminates sound into the body. [. . . ]