They make a ton of 3.5 mm bluetooth transmitters.

Why do you need Bluetooth? Wired headphones are better

Last time I tried hooking up to a headphone jack on a Stern it wouldn't output audio... must be sensing the impedance of the load because it worked if I split the signal to a pair of headphones.

On a similar note, I'm looking to connect directly to an amp via BT, like a Sonos. I don't want to use an intermediate device like a phone. I would consider a transmitter/receiver combo if there is one that is known to work.

I'll only be doing this with spike 2 machines and plan to use the Pinsound adapter to get a 3.5mm output.

Has anyone done that?

When I was adding a headphone panel to my Deadpool, Sandra from Pinnovators told me that theirs would work with 3.5mm bluetooth adaptors. I've only been using wired headphones though, so I've never bought one to see how it went.

From an old email:
"Question 2 - Our kit should work fine with Bluetooth if you use an adapter. I would highly recommend reading reviews before buying an adapter as Bluetooth is so finicky. That is actually why we haven’t adapted our kits to be Bluetooth ready. "

I don't see why you couldn't add one of those RCA/3.5mm to Bluetooth adapters to the game.

Bluetooth might add 50ms of audio lag, likely not noticeable.

5Below carries a half-decent one, but it needs a USB port for power.

I'm trying it this weekend.

I think a BT transmitter board would fit the bill for both you and the OP, and could be mounted and hardwired into a game in a way that appears "stock".

I used an identical module as the one in the link in a shortwave receiver with good results (wanted to use noise-cancelling HPs), and I don't see why it wouldn't also work well in this situation. It requires +5v supply and can take a line-level analog signal from the Pinsound adapter, and features pins for a momentary SPST pushbutton switch and LED for BT pairing mode.

https://www.amazon.com/Transmitter-Bluetooth-Wireless-Speaker-Headphones/dp/B081TD27G7/ref=sr_1_20

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Yea, that's more than I wanted to fabricate, but it would be great if someone would.

At this point, I'm thinking 2 of these, on on either end. Would be nice and easy if they work.

https://www.amazon.com/dp/B09JKDBNKB/ref=sspa_dk_detail_0
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Have one of these to experiment with but holding off because the entire thing is the size of a quarter. Want to find an adapter PCB to bring it to 0.1" header pins. These modules are cheap and have a programmable BT ID, which is attractive in a multi-game setup.

Well I hate surface mount boards, why can't they make them like the B/W boards so I can repair them!

Didn't notice the size, def beyond my skills.

The tiny size is a feature, not a bug! Very easy to unobtrusively mount just about anywhere, though I agree the nonstandard header definitely earns a zonk (I never found an adapter so I ended up simply hardwiring everything in my radio project).

The only things you need to solder on this board are the connections, all of which are through-hole and nicely pretinned, so it’s definitely NOT beyond your skills if you can work on B/W boards!

Sorry you didn’t get the joke. When stern went to spike everyone bitched about the surface mounted components and repairs.

Found a guy who was able to get his wired up to 0.1" headers.

https://www.electro-tech-online.com/threads/kcx_bt_emitter-low-cost-bluetooth-bt-audio-module.158156/

Really though, these are the best headphones for pinball. Lightweight, comfortable, breathable, they allow you to hear enough of the mechanical sounds, perfect length cable to hang on plunger without hitting the floor…

Koss Porta Pro On Ear Headphones with Case, Black / Silver https://www.amazon.com/dp/B00001P4ZH/ref=cm_sw_r_cp_api_glt_i_A96ZSJRWN1SVDAMNZK85

Ha, I guess it was late and I was half-conscious, lol. Yes, I remember being amused by the gnashing of teeth (not only in pinball, but also audio and other DIY electronics) and the hyperbolic posts suggesting it would "kill" the hobby.

Thanks for the link, now I want to experiment further with these boards.

Tried 2 of those TX/RX combo devices. They were able to pair to each other, but it seems the dual use 1/8" jack isn't high impedance. When I plug it into Rollergames it is pulling down the audio signal, never had that problem with other equipment. Going to try another model with separate input and output jacks.

Rat can you clarify your post. I’m not following it.

And if you don't mind waiting 2-3 weeks, here is the same board for $5 including shipping!
https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20220129080813&origin=y&SearchText=KCX_BT_EMITTER

(I buy from AliExpress all the time and never had a problem)

It didn't work.

I got that part. What does pulling down the audio signal mean?

What were you plugging it in to? A dedicated jack or one that auto switches?

I’m planning to use a dedicated output jack from pinsound, so would I have that issue?

I’ll look for other devices just trying to understand what issues I might face. I don’t know much about this stuff.

My Rollergames is modded for audio out, off the volume control. Normally when I hook something up you can still hear the audio through the speakers. When I connected it to the jack of the BT adapter all the audio became very faint.

Dedicated output jack is probably fine. The adapters worked when I hooked the transmitter up to my phone, there was a little bit of lag but hard to tell exactly how much.

Tried 2 new adapters, paired to themselves. These have a dedicated TX jack.

Audio works correctly, but the bluetooth signal has major lag. It's so bad the callouts sound like a hype man repeating the word that was just said.

Koss is a Milwaukee WI based company (my hometown) and everything they make is pretty solid. That being said, these are still wired headphones. Curious...I think it was you in earlier string....is this where your brother happens to work? I love visiting their factory store. Anyone who thinks $300 headphones are a"good deal" might want to really compare various audiophile reports on them. I would be interested in end result as I would like to do this to my Godzilla machine