Outdoor speakers and low-latency Bluetooth? - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 4 Old 06-04-2016, 11:18 AM - Thread Starter
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Outdoor speakers and low-latency Bluetooth?

I've got a Dashbon flicks portable projector. I want to find something that'll allow me to use speakers wirelessly. The developers recommend something with low-latency Bluetooth audio. Like this Avantree Priva II (aptx LL) one:

http://www.amazon.com/Avantree-Certi.../dp/B0169TWV8O

That'll handle the sending, what portable speakers support the receiving end?

Or should I consider some other means?
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post #2 of 4 Old 07-10-2017, 01:53 PM - Thread Starter
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To follow up on this, I've been using a Taotronics TT-BA07 bluetooth transmitter and some bluetooth speakers.

For the boat I use a pair of Amazon Tap speakers. These are versatile enough otherwise (for all their Amazon Echo features) and they're also decent Bluetooth receiver speakers. The BA07 pairs with both of them simultaneously.

For the backyard I use a second one of those adapters and some ION portable units. One is a Job Rocker Plus, the other a Job Rocker Max. I use a second Bluetooth adapter to avoid having to re-pair the devices.

This takes audio from the 3.5mm headphone jack on the Dashbon. I don't detect any noticeable latency. I'm sure there is 'some' but it's not enough to be detectable when watching movies.

Amazon Tap:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Bluetooth adapters: (the TT-BA07 is the one to get)
https://www.amazon.com/gp/product/B01EHSX28M

Ion speakers:
https://www.costco.com/ION-Job-Rocke...atalogId=10701
https://www.amazon.com/ION-Audio-Job.../dp/B01G93J4VC

The bluetooth adapter has it's own battery inside. It could be powered on it's own, but I don't. I plug it into the USB port on the Dashbon and power it from there.

For video I use an Amazon Fire TV stick streaming through a WiFi hotspot on my phone. The Fire stick I power using a USB battery pack, as it wants to sometimes pull just a bit more juice than the projector wants to provide. I've use a splitter to power them both and sometimes it's worked. But for the sake of not making the movie watching a chore I find it best to use a battery pack.
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post #3 of 4 Old 07-30-2017, 07:55 AM
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I'm going to be looking at outdoor bluetooth speakers as well. One thing to note is the projection lag for video games is usually 50-75ms before an average gamer can notice pressing a button is having a delayed affect.

This article states BT speakers have an average latency of 220ms+, fwiw:
http://stephencoyle.net/latency/

Projects:
NOT STARTED - Theater (Sim2 HT380, CIH 13ft wide).
IN PROGRESS (10%) - Home LAN (4 PCs).

Game room:
Epson 5040UBE, Denon S920W, Philips BDP7501, NVidia Shield TV, PS4 Pro, SI 110"
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post #4 of 4 Old 07-30-2017, 08:48 AM - Thread Starter
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Quote:
Originally Posted by elmalloc View Post
I'm going to be looking at outdoor bluetooth speakers as well. One thing to note is the projection lag for video games is usually 50-75ms before an average gamer can notice pressing a button is having a delayed affect.
There's always going to be some amount of delay. The question is whether there's enough for it to be a problem.

One of the most important things to avoid is having more than one audio output playing the source material via different means. As in, don't listen to a live broadcast via radio/TV on the device's own speakers while also having it playing back via anything else that introduces any delay. So live TV broadcasts (or even played through a set top box) and listened directly to attached speakers is going to sound just enough ahead of any bluetooth connected speakers to be detectable. This is because the device-connected (built-in or analog wired connected through an analog amp) are producing the sound sooner than the same source going out to a bluetooth transmitter, back in through a receiver and then through a codec for amplification. The key is making sure any/all audio outputs are all at the same relative delay. For most movie viewing situations there's not likely to be enough delay to impact the presentation at all.

As for video games, the twitch-factor-crowd gets fixated on all kinds of specs. Ignoring the old saying that "it's a poor craftsman that blames his tools". As in, lag through the gear (beyond networking multiplayer) is not the explanation of why your gameplay sucks.... it's you (figuratively, of course). Or as the kids all say, 'git gud, scrub!'
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