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PostPosted: Sat Oct 24, 2020 4:41 pm 
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I work part time as a campground host at a campground, and we show movies on the projector from time to time. Just a small group of employees, not the general public. Attached are a couple of pics of the setup so you get the idea.

In the past at another location I've done karaoke with a PA, mixer, compressor and wired and wireless mics, which was great, but it's a lot of setup and is a bit loud for this environment. Then recently someone gave me one of these $30 wireless bluetooth karaoke mics with built-in speakers:

https://www.amazon.com/dp/B071SGMQ7V

While it's obviously lacking compared to a full setup, it was enough to get people singing. Surprisingly much! Full on howling around the campfire while reading the karaoke from youtube on a phone. So I was thinking that in the COVID era these mics are a nice low key way to have an easy campfire-singalong style karaoke party, since they're cheap enough to just get a bunch of them so people can use the same mic all night, or share with their partner. And it's also a nice way to keep the volume down. And we're outdoors, socially distanced, and not sharing equipment.

It would be nice to get the music playing from all the mics at once though, which is where I'm currently stumped. I know I can broadcast to a single speaker, and I might do that as well, but I'm thinking that the distributed sound source (the speakers in each mic) might make it so we can have quieter music volume overall, which is a big factor here.

So far I'm thinking something like this:

- connect a headphone distribution amp to the output from my laptop. Maybe this one (alternative suggestions invited, would be nice to find one with 1/8" outputs):

https://www.amazon.com/Knox-Four-Channe ... B07GXF5WVP

- connect a bluetooth transmitter to each output from the distribution amp. These are pretty well reviewed and can broadcast to two mics simultaneously:

https://us.amazon.com/Nulaxy-Bluetooth- ... B07S2912VV

Sure would be nice to find a bluetooth transmitter that can feed more than 2 mics at once, but I don't see any. I don't imagine anyone knows of one?

And this BT transmitter has an 1/8" output as well, so I could conceivably just daisy chain multiple BT transmitters and skip the headphone DA... Might be asking for gremlin trouble though.

- and I can of course boost the music volume with regular BT speakers, but for this setup just the mics might be enough.

I'm wondering if anyone has any ideas for how to improve the system? Keeping in mind that it's just a goofy little low volume campfire setup.

Any other mics you think I should be considering?

And what are people's thoughts about spraying these mics with sprayable hand sanitizer. As a shot in the dark, do you think that would harm the mic? Maybe wipes would work better? Note that I'm not talking about for swapping mics during the night, I'm talking about at the end of the night. People would use the same mic all night. I see a few "mic sanitizer" products on Amazon, I wonder how it differs from simple hand sanitizer.

And hopefully that BT transmitter automatically reconnects with the mics, and lets me use 4 of them to pair with 8 mics (no frequency conflicts etc).

Thanks for any help!


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pic1.jpg
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Last edited by wrybread on Sat Oct 24, 2020 8:01 pm, edited 4 times in total.
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PostPosted: Sat Oct 24, 2020 6:37 pm 
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Number one bluetooth sucks for vocals. I know from experimenting with bluetooth speakers. Never again.
Number two you need a separate mixer attached to actual speakers.
Just use corded mics and buy enough to be able to allow everyone has their own mic. As each singer joins in they can attach their personal mic to the cables. If you want a huge sing along then get a mixer with enough inputs for those mics. But I would consider limiting the number of people who are singing until they get a vaccine that is safe and tested correctly and not rushed out. I will stop on that subject and let you make the final decision on that.

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PostPosted: Sat Oct 24, 2020 7:22 pm 
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One thing I should clarify in case it's not clear to anyone else: these mics don't transmit vocals, they just receive the music and play it through their internal speaker. As well as amplify what's being sung into that mic of course.

Attaching a pic.

And definitely not comparable to what you'd get with proper speakers, microphones, a mixer etc., but surprisingly workable for a campfire type setup. With appropriately low expectations, ha.


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PostPosted: Sun Oct 25, 2020 11:37 pm 
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wrybread wrote:
One thing I should clarify in case it's not clear to anyone else: these mics don't transmit vocals, they just receive the music and play it through their internal speaker. As well as amplify what's being sung into that mic of course.

Attaching a pic.

And definitely not comparable to what you'd get with proper speakers, microphones, a mixer etc., but surprisingly workable for a campfire type setup. With appropriately low expectations, ha.

connecting them all at once, that requires them to send the vocal sound somewhere which it seems these do not. i don't think it is physically possible to make these do what you are asking. another system like you had before would be better even if it is smaller. remember, no system is too loud, it's just being set up improperly for the area. a 10,000 watt system can be used in a nursing home with no problems because...as i tell singers who are afraid of singing too loud for the mic... i can only turn it up so much, but i can turn it down to whatever i want. from the picture of the area, a single Alto TS315 would be plenty for good sound there and a small board. wired mics are fine, but wireless is cheaper then ever, either way.

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PostPosted: Sun Oct 25, 2020 11:46 pm 
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> connecting them all at once, that requires them to send the vocal sound somewhere which it seems these do no

I think it might still be unclear. The mics each have a speaker in them. Those speakers will all play the karaoke track (which will be broadcast from my laptop). That's what the bluetooth transmitters are for.

Each mic's speaker will only play the singing of the person holding that mic. The other night we only had a single one of these mics and most people were just singing unamplified, which worked surprisingly well, so I think the little mic speakers should be enough for this setup.

As far as volume, it's a campground, at night. I've got a PA, mixer, traditional mics, etc., but they're way too loud for what I have in mind, even on low volume. And besides it takes a lot of work to set up for a campfire... It's fine for one or two times but I'm trying to make something I can bring out to the campfire easily and often, spur of the moment. And we can't really get into too much trouble with these little microphone speakers, ha.


Last edited by wrybread on Mon Oct 26, 2020 3:57 pm, edited 1 time in total.

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PostPosted: Mon Oct 26, 2020 12:07 pm 
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Add the fact that you would have to do a lot of bluetooth system connections every single time a new singer is singing. Better to have a mixer connected to a music source, regular speakers and regular mics.

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PostPosted: Mon Oct 26, 2020 12:32 pm 
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> Add the fact that you would have to do a lot of bluetooth system connections
> every single time a new singer is singing.

All the mics would be connected via BT all night. Remember, this isn't a big venue full of people doing karaoke, this is 6-8 friends sitting around a campfire. Should just be the same 6 to 8 mics all night, all connected simultaneously.

I'm hoping the mics and bluetooth transmitters play nice together and will auto-reconnect at the start of the session, so I can just label everything and know what's connected to what and have it connect without any action on my part. But all that remains to be seen.

I ordered 4 mics and two BT transmitters (each transmitter connects to 2 mics) to test the theory. If they don't auto-reconnect I'll try a different BT transmitter, that would be a deal-breaker since I'm trying to keep things super simple. I want to simply connect the daisy-chained 4 bluetooth transmitters to the output of my laptop and turn on the 8 mics as needed.

> Better to have a mixer connected to a music source, regular speakers and regular mics.

Undoubtably, but that's not what I'm trying to accomplish here. I'm trying to make a tiny, minimal set up, campfire-style karaoke rig.


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