Budget Bluetooth

[DatchwortSteve]

Morning all.

New to the hobby so just building up a reasonably priced outfit to get me started.

I picked up a pair of Noise Cancelling Bluetooth Headphones and a Bluetooth transmitter for the princely sum of 26 quid.

The sound is great and there is no lag on the signal.

KitSound Engage Noise Cancellation Wireless Bluetooth On Ear Headphones

and

2 in 1 Wireless Bluetooth Audio Transmitter Receiver HiFi Music Adapter AUX RCA

Happy Hunting

Steve

[Fusion]

When you say "there is no lag", you mean that you can't notice any lag, or does the technical spec state this? After a quick search, I couldn't find any mention of low-latency in the specs ?

Detectorists are a picky lot, and even some 'low-lag' equipment has noticeable lag. The generally accepted figure is that lag/latency needs to be 50 millisec or lower, preferably under 30 msec. Any regular version of Bluetooth has unacceptable latency.

[DatchwortSteve]

When you say "there is no lag", you mean that you can't notice any lag, or does the technical spec state this? After a quick search, I couldn't find any mention of low-latency in the specs ?

Detectorists are a picky lot, and even some 'low-lag' equipment has noticeable lag. The generally accepted figure is that lag/latency needs to be 50 millisec or lower, preferably under 30 msec. Any regular version of Bluetooth has unacceptable latency.

Hi Fusion.

Thanks for your reply on the post.

I was going by the product description. I could be wrong.lol

It has APTX LL which i thought was low latency. I tried it out on a tv and could see no lag at all on the speech. Would be grateful for any pointers in this direction for future upgrades and knowledge

ATB

Steve

[haggz]

hi steve. i used this setup on my ace 250 and fusion is spot on about lag. i managed to overcome this to some degree by adopting the low and slow approach whilst detecting. the main issue i found was going over a target then to get a bleep once you had passed it. try some practice runs in your garden and you get a general idea on the lag time

[Fusion]

Hmm, these Bluetooth specifications are so tough to interpret. The headphones don't say anything about APTX-LL, they appear to be Bluetooth V5, which can give latency of 40-50 msec, but I'm always supicious about these claims. The 'can' word doesn't guarantee it. At least dedicated codecs like APTX-LL do put the emphasis on the latency, probably at the expense of other features, like resistance to interference, range.
I guess you have to try them and see. Watching TV with this headphone set-up is one test, latency is usually quite apparent. It's not always so noticeable on a detector, as they have inherent latency themselves. This is rarely specified, though Fisher / Teknetics do quote it for their faster machines, I think a common figure was 78 msec ( Tek T2 / F75, F19, G2, GoldbugPro ). But entry-level machines can be much slower.

[DatchwortSteve]

hi steve. i used this setup on my ace 250 and fusion is spot on about lag. i managed to overcome this to some degree by adopting the low and slow approach whilst detecting. the main issue i found was going over a target then to get a bleep once you had passed it. try some practice runs in your garden and you get a general idea on the lag time

Cheers for that, I will see how i get on with them. Nothing ventured, nothing gained as they say.

[DatchwortSteve]

Hmm, these Bluetooth specifications are so tough to interpret. The headphones don't say anything about APTX-LL, they appear to be Bluetooth V5, which can give latency of 40-50 msec, but I'm always supicious about these claims. The 'can' word doesn't guarantee it. At least dedicated codecs like APTX-LL do put the emphasis on the latency, probably at the expense of other features, like resistance to interference, range.
I guess you have to try them and see. Watching TV with this headphone set-up is one test, latency is usually quite apparent. It's not always so noticeable on a detector, as they have inherent latency themselves. This is rarely specified, though Fisher / Teknetics do quote it for their faster machines, I think a common figure was 78 msec ( Tek T2 / F75, F19, G2, GoldbugPro ). But entry-level machines can be much slower.

Thanks again Fusion.

I will persevere for now until the bank manager says I can upgrade, then will be looking for a wireless set up.

[tcawood]

I've created a Bluetooth setup for my Rutus Alter 71 and did some research to make sure I got as close to no lag as possible, which without a specific piece of kit means Low Latency Bluetooth.

So... you need both the Transmitter AND the Headphones to be Low Latency, otherwise you will get the latency of the worst of the pairing.

There are some unscrupulous sellers on Amazy and Fleabay, double check the manufacturers website and if you don't see them list Low Latency then it's likely that the listing is wrong and I'd stay well clear.

If you do get Low Latency earphones and transmitter then the lag should be imperceptible - at least that's my experience.

[chesters4]

Best to check on the APTX site to see if the equiptment is registed APTX-LL not APTX or APTX-HD ETC .Headphones are pretty easy but earbuds no so i have just manged to get a set of Aukey earbuds at an amazon special deal but they dont appear often .
https://www.aptx.com/products/aukey-b80 ... th-earbuds
As mentioned everything has to be low latency but theres still a bit of latency which will reveal itself in highly soiled sites with targets very close to each other so RF will always be the best
Things are getting easier now more and more is going low latency when i used it on my f75 avantree was about the only way to go ,to offset the expence i bought a duel output transmitter for the tv and i use it on the F75 you also have to consider it has an inbuilt battery and audio 3.5mm imput some are just coax or optical
And yes theres crooks both on ebay and amazon ,one seller insisted his was aptx-ll it was even in the description but his make didnt appear on the site above but i still bought them and as suspected they were not and the lag appaling ,they were sent back at his cost!

[matchless]

I am using a fleabay bluetooth transmitter and wireless headphones on my Fisher F5 and although there must be some lag I don't think it is a problem as when I get a signal I go back over that area much slower to check the readings and depth etc. or am I missing something?

The cord was driving me mad................