Design for my job at station

[Johnny1234]

Hi all any advice is greatly appreciated.

I need to modify a box at work. The original has an amplifer driving a 2 inch 16 ohm speaker.
I need to:
1 Add a line out
2 Have a switch to alternate between speaker and line out
3 Add a volume control for the line out and speaker

Below is a little diagram of my thoughts. All ideas are greatly appreciated, but simpler is better.
Many Thanks

 

[Johnny1234]

Sorry I know the pot has to be before the switch my bad.

 

[ccaudle]

1 Add a line out

How is the signal delivered to the amplifier in the box? Do you already have access to a line level signal coming in, or the speaker is part of something else and you cannot easily access as line level?

What is the level sent to the speaker? (presumably pretty low since it is a 2" speaker, but you will still need to know typical and max to determine how to adapt to line level).

What nominal "line level" do you want? What consumer equipment considers line level and what pro equipment considers line level is quite a bit different.

 

[Johnny1234]

The box is for a college game show that we will host. Signal is derived internally, it just beeps lol. I don't have easy access to the line level input. Speaker level very low I would imagine about 1 volt. Nominal level would be for pro audio input.