Small speaker(s) that will run off headphone output?

[Om_Audio]

Hey guys,
I modded 2 of my samplers to have additional outputs. I am hoping to add either piezo or reg small speakers s an option as well. Obviously fidelity will be non existant but would allow to use the machine without headphones which would be nice. Maybe if the speaker was coupled to the case or utilized a cavity I could vent could help. I also know because I am simply splitting the wires I cannot use more than 1 connection at a time without risk of overloading the headphone pre but just not sure what sots of speaker(s) I might be able to employ. I would assume the speakers would also require a switch to make sure they are disconnected when using headphones.
Any input appreciated!
Clifford

Links to mods and guts:
SP-404SX headphone jack add:
https://plus.google.com/u/0/photos/105266388149148864163/albums/5896318804032590433
SP-555 headphone jack add:
https://plus.google.com/u/0/photos/105266388149148864163/albums/5923081922962429217
SP-404 internal mic move/improvement:
https://plus.google.com/u/0/photos/105266388149148864163/albums/5906698814619170001

[Om_Audio]

Bump

Sent from my SM-G900T using Tapatalk

[kothoma]

Small speakers (the ones from old pocket transistor radios or passive PC speakers, 2" I'd say) will work fine, loud enough in the near field, but you won't get any bass whatsoever.