17
MTH Big Boy Operating Manual
substituted as a temporary fix, but since alkaline batteries can’t take a
charge, it will eventually wear down. Regardless, it should give you a week
to a couple of months use while you wait for your replacement
ProtoSound® battery to arrive.
PROTOSOUND® VOLUME ADJUSTMENT
Your ProtoSound® system has two types of volume adjustment. A
manual turn knob on the bottom of the chassis (See Fig. 6 below) allows
you to control all the sounds in the system and a remote control “RESET"
option (Option # 6), allows you to control the volume level of the engine
sounds remotely from the transformer. Turning the volume adjustment
knob clockwise will increase the volume and counterclockwise will lower
the volume of all sounds; bell, whistle, steam chugging sounds, enhanced
neutral sounds, etc. For information on operating the RESET volume
adjustment option, see the section entitled “Programming ProtoSound
RESET Options” on the following pages.
ProtoSound
Volume Adjustment Knob
Figure 6: Adjusting The ProtoSound® Volume