User manual DALLEE ELECTRONICS STEAM SOUND VERSION 3 W AUTO WHISTLE

[. . . ] In some cases, particularly in the larger gauges, mounting a speaker inside the front of the boiler with a open stack can enhance the sound. Enclosing the speaker in a chamber will also enhance sound reproduction. It is usually best to seal the end of the tube, so there are no air passages to the rear of the speaker, thus creating a sound chamber. By carefully sealing all openings it may be possible to use the entire tender body shell as a sound chamber. [. . . ] Be certain that the components on the circuit board do not come in contact with any metal objects as such contact can destroy the sound system. The speaker should be mounted as per available space bearing in mind that sound reproduction is enhanced when a speaker is properly enclosed and baffled. If a DC locomotive is not moving, there is no track power, therefore to have sound it is necessary to have a separate power supply for the sound system. 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. 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 break or deform the alignment of the reed switch. Reed switches are not warranted under any circumstance since they are quite fragile and EXHAUST CHUFF is the most notable sound of a steam locomotive in motion. The sound is the result of the used steam from the cylinders being vented through the stack. Each cylinder will exhaust twice during each drive wheel revolution and since most steam locomotives have two cylinders, the exhaust should chuff four times for each drive wheel revolution. EXHAUST CHUFF sounds should vary from a very slow chuff rate to an almost continuous roar at high speed. EXHAUST CHUFF should also vary as to the load on the locomotive with a heavy train making a louder exhaust. This sound system will vary the EXHAUST CHUFF sound either by voltage supplied to the track / motor or, as an option using switch contacts or our OPTICAL INPUT (Item #583), with actual movement of the drive wheels or other axles (see pg 6). When the sound system is initially powered on, voltage variable automatic exhaust chuff is in operation. If you have installed an optional manually synchronized exhaust chuff, the sound system will switch to this synchronized mode on the first chuff input and will continue synchronized as long as sound system power remains on. Additionally, the EXHAUST CHUFF volume will increase above normal during accelleration and will be lower when decellerating. GENERAL OPERATING INFORMATION: VOLUME ADJUSTMENT: should be set as desired for your application. Please remember that the amplifier can produce more power than a small speaker can handle and that the sound will be louder if the speaker is properly enclosed and baffled. If you are using batteries, the louder the volume the shorter the battery life. CHUFF RATE control adjusts the rate of chuff when in auto-chuff mode. This adjusts the maximum chuff speed for voltage variable automatic exhaust chuff. Rotate the control CCW to increase the voltage required to reach maximum chuff speed. [. . . ] Use a small, sharp, drill bit (#60) to open a series of holes within the speaker cone diameter. Be sure to cover all sides of the speaker so no air can escape. RED Focus Distance 1/8" - 3/16" Optical pattern mounted on drive axle apply a thin layer of glue on each side to prevent oil from contaminating the optical pattern. Optical Coupler (hi-lighted for ease of viewing) mounted to frame 3/16" from optical end to pattern. In this installation, the end mounting ears had to be trimmed to obtain clearance to the drive gear box. When doing so care must be used to not damage the optics. It is not necessary to use the black / white stripe pattern, anything that will come in and out of focus to the optical reader will work! [. . . ]