User Guide

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.
2
Synchronized Chuff
input. See page 6.
Chuff Rate
(speed set)
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.
246 W. Main St.
Leola, PA 17540
[phone]
www.dallee.com
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!
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)
J2 connections:
1 - DC power "+" (RED)
2 - DC power "–" (GRAY)
Volume Control
(J5) - not used
Remote Input (J4)
1 - Horn (red)
2 - Bell (gray)
Speaker Output
Wiring standards:
wires with a "•" ARE a connection!
wires crossing over (without a "•") DO
NOT CONNECT!
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
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. Adjust as desired for a chuff rate to
match your locomotive.
SPECIFIC INSTRUCTION SHEETS
PAGE INSTALLATION TYPE
3 ................. Conventional DC
4 ................. Conventional DC with
rechargeable battery
5 ................. aux. Amplifier
5 .................. Remote Volume Control
6 ................. Chuff synchronization
6 ................. sample speaker installation