I bought a thump 808 blue tooth speaker and stuck it in my suit to play halo theme songs as well. It is quite loud and wireless. I think it worked out perfect, I just stuffed it up in my chest piece(up in the shoulder with the speaker pointed down) and slid my iPhone in my gauntlet. Guess depends on what your trying to accomplish. I would like to setup a PA system on my suit as well. Just haven't gottten around to it.
.... and you'll hook them up as output from what kind of device ? Something with a build-in amp ? And not to talk it down but laptops don't really strike me as having "good nor loud speakers" generally speaking.
So basically :
1) what will they be hooked on to ? (what kind of device/player/whatever)
2) how small is small ? What's the space available ? What kind of suit ?
A lot of people in the 501st use Aker voice amps (like this: VoiceBooster MR1506 (Aker) 10watt Voice Amplifier ), they're small but I'm not sure if they can be hidden in a suit of Halo armour. Hope that helps!
what are you looking to do with the speakers? I put a cheap bluetooth speaker with speakers scavenged from a set a computer speakers in my suit so i can play halo themes while walking around. it isn't that loud, in a crowd you can hear it from maybe 5-8ft away
Pyle Pro PWMA50 Waistband Portable PA System (Black) PWMA50B B&H
I bought this one. I haven't tested in a suit, but just playing around with it seems like it will work. I'd rather go Blu tooth, but for the price I didn't want to pass it up.
In any case, search portable PA instead of speaker and you might find better results. Unless you mean to play music in your suit and not your voice.
Here's another idea, at least for PA. I tested this, it works pretty well.
Many of these PA systems have the capability of playing back from an internal SD card, AUX-in plug ... and quite a lot of them have an FM radio tuner installed too.
Buy combining THIS Portable FM Wireless Microphone Headset Megaphone Radio Mic For Loudspeaker/ teaching/tour guide/ sales promotion/meetings-in Microphones from Consumer Electronics on Aliexpress.com | Alibaba Group
kind of really cheap microphones, you tranform any FM-receiver into a PA, and the nice thing is you don't have a bloody microphone wire running from your helmet. If you have one of these ceapo PA's, they have a digital Tuner. No signal ? No output, even no static. So just switch on the PA set to a paired frequency with this wireless mic, switch on the mic and be ready. Put off the helmet, no signal, no noise.
If it sounds too good to be true ? I can tell you, it does work. It's so cheap you can simply mount it fixed in the helmet, so no battling sliding headphones and whatever in the helmet and stuff like that.
I'll have to look into getting one eventually!! Thanks!!