IN LOCOMOTIVE DIESEL SOUND with automated Horn patterns by DCv3 AHrev0 CAUTION: this device can be damaged by static discharge. Please exercise care during installation to avoid this possibility. Discharge yourself to an electrical ground (outlet cover screw) before removing this device from its anti-static bag. Please read instruction sheet completely before attempting to install and operate this product. Save the anti-static bag for possible reuse of storing or shipping the sound unit! Reed switches are not warranted under any circumstance since they are quite fragile and easily broken physically and electrically. Extra reed switches are available, item 989. After appropriate lengths of wire are placed on the reed switch, secure the reed switch with either double sided tape (item 388) or other type of glue. Make sure that all wires to the reed switches and sound system do not come into contact with any other metal or power wire since this may damage the sound system. OVERVIEW: This device is an electronic, self contained, sound system for installation in model diesel locomotives that are designed to operate with conventional DC track power or other types of control systems including radio with either track or battery power, also as a stationary sound unit. 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. The Bell is also triggerd on and off in the same manner. Large gauge "G" operators usually place the reed switch beneath the locomotive. One side is used for the Horn, the other side for the Bell. Magnet trips are then placed in the track. Another method of operation is to operate the sound system as a stationary unit and place the magnets on the underside of an engine or car. An on/off switch (not included) must be used to power the sound unit on and off in some applications. The audio amplifier can produce 1.1 watt of power which is in excess of what most small speakers can handle. If more audio power is desired, an amplifier such as item #671 or #672 can be used. The speaker impedance must be 8 ohms or higher. Sound volume is adjustable. Refer to our catalog for available speakers. Always try to use the largest size speaker for the space allotted or multiple cluster's of four smaller speakers also works well. Sounds produced via momentary reed switch closure are automated horn patterns, and a bell. Non-user controllable sounds include periodic air system pressure release, brake release and diesel prime mover sound automatically adjusted to speed and load conditions. If any connections are not done properly, especially the power connections, you will damage the sound system. This type of damage is not covered under any warranty. The sound system is thoroughly tested and inspected before packing to insure proper function. There is a minimum charge of $35.00 plus s/h for repair. SPEAKER MOUNTING: The speaker generally should be mounted so that the sound can actually "get out" of the locomotive. A hole in the floor or fuel tank is acceptable but open grills or a doorway may be a better choice as the sound can exit upward rather than down toward the track. In some cases, particularly with plastic body shells, just mounting the speaker against the shell will be adequate as the vibrations of the shell can enhance the sound. Enclosing the speaker in a chamber will also enhance sound reproduction. A very simple enclosure can be made with a tube. The longer the tube the better the speaker will reproduce low frequency sound which is inherent in diesel prime movers. 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 body shell as a sound chamber. A simple wall behind the speaker may be all that is possible or perhaps all that is needed. Speakers can be attached with double sided tape, with glue or with "hot melt". Enclosures can be made with plastic, wood, card stock or even metal. Film cans or medicine bottles make excellent sound chamber enclosures for small diameter speakers. Attachment with "hot melt" is advantageous as the "hot melt" can be used as a gap filler when creating an enclosure. A second speaker, wired in series with the main speaker, can also enhance sound quality and will permit a higher volume without damage to the individual speakers. A tube with a speaker at each end or a speaker in a doorway at each end of a body shell is an excellent approach. A four speaker approach will yield the highest volume while still maintaining the 8 ohm minimum requirement. Drawings for this are included in the speaker instructions. Speaker enclosure is an art and experimentation is definitely in order for your installation so as to gain the maximum benefit of the superb sound quality available in this sound system. INSTALLATION INSTRUCTIONS: The sound system consists of a printed circuit board, a speaker, four 2-pin connectors with wires and one 3-pin connectors with wires. Refer to the drawing on page 2 to familiarize yourself with the connectors and controls on the sound board. Then refer to the specific instruction sheets for the type of installation you intend to make. Before proceeding with the installation read the balance of the instructions carefully so you will be completely familiar with what is required and what sounds you should hear. The circuit board should be mounted so that at minimum, the volume control is accessible either through the frame or via a hatch or a hole in the locomotive body shell. 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. For in locomotive use, this separate supply is a battery. Without a battery, the sound will not work at lower track voltages. For some this is not a problem. 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. Rechargeable batteries can be used. 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 break or deform the alignment of the reed switch. Carefully solder wires and cut excess lead ends. 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. PRIME MOVER (DIESEL): sounds range from idle to full RPM with eight notches. With no power to the track / motor the sound system will produce engine idle sounds. As a throttle is advanced to put the locomotive in motion, a brake release will sound (see below) and the diesel will initially accelerate to notch #4, and then seek the correct notch setting for locomotive speed. There will be a distinct volume increase during acceleration. AIR RELEASE (POPS): Air is pumped continuously in a diesel locomotive to maintain pressure in the brake system and for other purposes. Periodically the pressure will increase and the excess will be released through the safety valve. These AIR RELEASE sound (pops) are generated at random intervals during idle and at all notch settings. 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 diesel sound is actually at idle. This BRAKE RELEASE has been factory preset but is user adjustable. For DC operators, this requires approximatly 1.5 to 2 volts of input voltage to sense a running mode. 1 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. 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. The bell will turn off at the end of a ring. Common Horn signals used with this sound system SOUND INDICATION long, 3-short ..................flagman protect rear of train 2-short...........................acknowledgment 4-short...........................call for signals short, long .....................inspect train line for leak or brakes sticking 2-long, short..................approaching meet or wait point 2-long, short, long .........approaching grade crossings continuous long.............approaching stations or junctions successive shorts..........alarm for something on track 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. NOTCH ADJUSTMENT: full clockwise will yield notch #8 on the diesel at approximately 8 volts to the track / motor. Rotate the control CCW to increase the voltage required to reach notch #8. Gauge 1 and other operators using higher motor voltages will probably want to set this control full CCW. Placing a 1k resistor in series with one of the motor leads will also lower the engine RPM sound further when higher motor voltages are present. Volume Control Speaker Output Notch Control (speed set) SPECIFIC INSTRUCTION SHEETS PAGE INSTALLATION TYPE 3 ................. Conventional DC 4................. Conventional DC with rechargeable battery 5 ................. aux. Amplifier 5 ..................Remote Volume Control 6 ................. sample speaker installation J3 connections: 1 - not used (RED) 2 - Motor 1 (BLACK) 3 - Motor 2 (WHITE) J1 connections: 1 - track power 1 .....also AC input 1 .............(RED) 2 - track power 2 .....also AC input 2 .............(GRAY) Wiring standards: (J5) - not used Remote Input (J4) 1 - Horn (red) 2 - Bell (gray) SYNC - not used J2 connections: 1 - DC power "+" (RED) 2 - DC power "­" (GRAY) wires with a "·" ARE a connection! wires crossing over (without a "·") DO NOT CONNECT! NOTE: The speaker impedance should be kept near or above 8 ohms, therefore four 8 ohm speakers in a series/parallel configuration is acceptable since it yields 8 ohms total impedance. If you care to use two 8 ohm speakers you must place them in SERIES. When connecting DC power to the sound unit be absoloutly sure that the "+" and "­" are connect correctly! If not, you will either burn out the sound unit or the supply feeding it. This is not covered under warranty! 2 246 W. Main St. Leola, PA 17540 (717) 661-7041 www.dallee.com Track power installation without batteries speaker Red - no connection Black White Red Gray Gray DC motor lighting circuits Right Rail pickup either rail may be used. Right / Left only used for reference. Red - no connection Left Rail pickup Horn Bell Reed Switch (physical) speaker DC track power installation using standard batteries Red - no connection Black White Right Rail pickup DC motor lighting circuits either rail may be used. Right / Left only used for reference. Gray Horn Bell + ­ Red Left Rail pickup ON / OFF switch #524 SPDT switch. Switch shown in the OFF position. Drawn as a spst. ­+ 9V, or 6-AA, or 6-AAA batteries Battery power - must not exceed 35 volts DC. Use one 9 volt battery or a string of 6 AA or AAA batteries. Battery life depends on the volume setting and speaker impedance. Typical operation of most sound systems, with one good 9 volt battery, is about 8 hours, AA or larger mahr (milliamp hour) batteries is well beyond 50 hours! 3 DC track power installation with rechargeable battery. speaker When track vol ...