Anyone Familiar with the ALPS Sound and throttle controller

Some friends and I took over a public display layout. It has a ALPS Advanced Light Power & Sound unit. It’s an IR throttle and also has many sounds. The speakers hook up to it through telephone type modular jacks. Unfortunately the manual is very slim and doesn’t show the wiring diagram for the speaker jacks. If anyone has or had one of these the X-3000 and know how to wire the plugs I’d be very greatfull. Thanks, Dave