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Adding Bluetooth functionality to Focusrite Scarlett #2746498
06/23/18 09:32 AM
06/23/18 09:32 AM
Joined: Jul 2010
Posts: 2,376
Sweden
TheodorN Offline OP
2000 Post Club Member
TheodorN  Offline OP
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Joined: Jul 2010
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Sweden
Is it possible? I'm not worried about latency, as this is mostly intended for music listening. I want to be able to turn on my computer connected to a Focusrite Scarlett 2i4, plug a Jaybird Freedom wireless earphones into my ears, and be able to listen to audio output through my Focusrite, instead of the inferior onboard sound card.

I found this, will it do the job?

https://www.walmart.com/ip/StarTech...5020788&affillinktype=10&veh=aff


My YouTube channel

Casio PX-5S. Garritan CFX. Prod. Voices: Grand 2 Gold, Concert Grand Compact, Est. Grand, Studio Grand LE. NI Giant. Galaxy II Blüthner Baby Grand. AcousticSamples C7. AK Studio Grand. Sampletekk Black. Kontakt 5. Reaper.
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Re: Adding Bluetooth functionality to Focusrite Scarlett [Re: TheodorN] #2746501
06/23/18 09:45 AM
06/23/18 09:45 AM
Joined: Nov 2016
Posts: 759
Finland
C
clothearednincompo Offline
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clothearednincompo  Offline
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Joined: Nov 2016
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Finland
That's a receiver. It will receive. You'd need a transmitter that would transmit.

Some devices might do both ways.

I have no recommendations.

Re: Adding Bluetooth functionality to Focusrite Scarlett [Re: TheodorN] #2746503
06/23/18 09:50 AM
06/23/18 09:50 AM
Joined: Jul 2010
Posts: 2,376
Sweden
TheodorN Offline OP
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TheodorN  Offline OP
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Sweden
OK thanks for clearing that up.


My YouTube channel

Casio PX-5S. Garritan CFX. Prod. Voices: Grand 2 Gold, Concert Grand Compact, Est. Grand, Studio Grand LE. NI Giant. Galaxy II Blüthner Baby Grand. AcousticSamples C7. AK Studio Grand. Sampletekk Black. Kontakt 5. Reaper.
Re: Adding Bluetooth functionality to Focusrite Scarlett [Re: TheodorN] #2746513
06/23/18 10:53 AM
06/23/18 10:53 AM
Joined: Aug 2017
Posts: 328
Sao Paul, Brazil
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EVC2017 Offline
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Sao Paul, Brazil
I would check if BT sound passes through the onboard sound card. My guess is that the digital output from the player goes directly to the BT transmitter.


Kawai ES8, Roland RD2000, Yamaha AG06 mixer, Presonus Eris E5 monitors, Sennheiser HD598SR phones.
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Re: Adding Bluetooth functionality to Focusrite Scarlett [Re: TheodorN] #2746515
06/23/18 11:19 AM
06/23/18 11:19 AM
Joined: Sep 2009
Posts: 7,726
Raleigh, North Carolina
MacMacMac Offline
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MacMacMac  Offline
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Raleigh, North Carolina
I searched for "bluetooth transmitter" and found some results. Here's one for $60 at Amazon:
https://www.amazon.com/Avantree-Bluetooth-Transmitter-Receiver-Speakers/dp/B01H6I3YGK

I have no idea how well this works. In particular I don't know whether its sound quality is good enough to justify using it with the Focusrite rather than using the computer's native audio-plus-bluetooth.

In any case, the idea is to connect the audio source (in your case: the Focusrite) to this transmitter.

This one has both RCA jacks (presumably for line-level signals) and 1/8" TRS mini phone jack (for plugging into the headphone jack of an Ipod or similar).

If it were me I'd use the RCA jacks.

The Focusrite has 1/4" phone plugs, so you'd need 1/4" phone - to - RCA adapters, like these:
[Linked Image]
Plus a stereo RCA cable, like this:
[Linked Image]

Or, instead, a cable like this:
[Linked Image]

Re: Adding Bluetooth functionality to Focusrite Scarlett [Re: TheodorN] #2746627
06/23/18 11:36 PM
06/23/18 11:36 PM
Joined: Dec 2012
Posts: 4,743
Richmond, BC, Canada
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Charles Cohen Offline
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Charles Cohen  Offline
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Joined: Dec 2012
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Richmond, BC, Canada
Originally Posted by MacMacMac
. . .
I have no idea how well this works. In particular I don't know whether its sound quality is good enough to justify using it with the Focusrite rather than using the computer's native audio-plus-bluetooth. . . .


I was wondering the same thing.

The computer's sound card, and the Focusrite interface, are both "digital-to-analog" converters. The "audio-to-Bluetooth" transmitter contains an "analog-to-digital" converter.

If you put the output of the Focusrite into the Blutooth transmitter, your final sound quality might be limited by the Bluetooth transmitter's ADC. And that might be as bad as (or worse than) your computer's built-in sound card.

You'd have to know the specs of the transmitter's ADC (and the Bluetooth receiver's DAC inside the headphones!) to make an educated guess, about whether the sound would be degraded, or not.



Last edited by Charles Cohen; 06/23/18 11:37 PM.

. Charles
---------------------------
PX-350 / microKorg XL+ / Pianoteq / Lounge Lizard / Korg Wavedrum / EV ZXA1 speaker
Re: Adding Bluetooth functionality to Focusrite Scarlett [Re: TheodorN] #2746662
06/24/18 06:44 AM
06/24/18 06:44 AM
Joined: Sep 2009
Posts: 7,726
Raleigh, North Carolina
MacMacMac Offline
7000 Post Club Member
MacMacMac  Offline
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Posts: 7,726
Raleigh, North Carolina
Yep. And, given that modern PC sound cards are pretty good (good enough for everyone except the professionals), I'm thinking that this is a non-starter.
Just let the PC send the audio over its built-in blue tooth interface, and done.

Re: Adding Bluetooth functionality to Focusrite Scarlett [Re: TheodorN] #2746805
06/24/18 09:32 PM
06/24/18 09:32 PM
Joined: Jul 2014
Posts: 1,582
Europe
JoeT Offline
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JoeT  Offline
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Joined: Jul 2014
Posts: 1,582
Europe
Using a Bluetooth audio transmitter for this is overkill.

All you need is a $10 Bluetooth USB dongle, which you plug it into your PC, if your PC doesn't have Bluetooth already built-in..

Then pair the Bluetooth headphones with your PC and it will send the audio directly to them in a digital format. No on-board or any other sound card involved.

Audio quality solely depends on the (compressed) codec support of your BT headphones. Bluetooth Audio is not Hi-Fi (old term) or HD audio (new term) and putting a Focusrite into the chain doesn't change that.


Yamaha P-515 | Kawai ES100 | Steinberg UR22 | Sony MDR-7605
Re: Adding Bluetooth functionality to Focusrite Scarlett [Re: TheodorN] #2746880
06/25/18 06:11 AM
06/25/18 06:11 AM
Joined: Jul 2010
Posts: 2,376
Sweden
TheodorN Offline OP
2000 Post Club Member
TheodorN  Offline OP
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Joined: Jul 2010
Posts: 2,376
Sweden
I hadn't thought of that, the conversion from digital to analog, and then the other way around, for the audio to finally reach the wireless earphones. I agree with you guys, that it sort of defeats the purpose, to invest in additional gear for up to $100, and possibly end up with inferior audio than can be had with the onboard sound card, with a Bluetooth USB dongle, which I already have.

Add to it, as JoeT points out, the compressed codecs Bluetooth uses, presumably to save bandwidth. I've had considerable dropouts in sound, when listening through my new laptop, and that of course affects the listening experience. Have had less dropouts when using Bluetooth earphones with my mobile phone.

I like how the Focusrite 2i4 gives me considerably better, warmer, and clearer audio, than the builtin sound card, but squeezing Bluetooth into the equation would probably nullify the gain (no pun intended) the Focusrite 2i4 gives me, as far as sound quality, and clarity, is concerned. I can easily imagine that would be the case, adding this transmitter in, if it is possible to begin with. So back to the good old wires!


My YouTube channel

Casio PX-5S. Garritan CFX. Prod. Voices: Grand 2 Gold, Concert Grand Compact, Est. Grand, Studio Grand LE. NI Giant. Galaxy II Blüthner Baby Grand. AcousticSamples C7. AK Studio Grand. Sampletekk Black. Kontakt 5. Reaper.
Re: Adding Bluetooth functionality to Focusrite Scarlett [Re: TheodorN] #2747563
06/27/18 05:13 PM
06/27/18 05:13 PM
Joined: Dec 2015
Posts: 97
J
jokke Offline
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jokke  Offline
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Joined: Dec 2015
Posts: 97
Yeah, bluetooth earphones will receive digital signal so the final D/A conversion will be done there, so you'll get least degradation of signal with any USB bluetooth dongle, compared to D/A at Focusrite followed by A/D on a BT transmitter.

If you like the Jaybird Freedom sound and have them already, it's cheap to try it out. I have several (too many) headphones to suit different needs, so you can use wired cans when that is appropriate and Bluetooth ones when not.

Many modern headphones support APT-X transmission protocol which is of higher quality than previous BT standards had, so depending on how advanced the wireless ones are, the compression might not be too bad.

I use my BT phones at home when vacuuming the floors, so it doesn't matter if the signal degrades a bit, my Electrolux is doing a lot more. laugh

Re: Adding Bluetooth functionality to Focusrite Scarlett [Re: TheodorN] #2747877
06/28/18 05:35 PM
06/28/18 05:35 PM
Joined: Jul 2010
Posts: 2,376
Sweden
TheodorN Offline OP
2000 Post Club Member
TheodorN  Offline OP
2000 Post Club Member

Joined: Jul 2010
Posts: 2,376
Sweden
Thank you, jokke. I have Jaybird Freedom earphones, and I like how they sound. If I use them, it's mostly with the mobile phone as the source of music. Very seldom with my laptop with Bluetooth support, or a desktop with a USB Bluetooth dongle. Don't like to listen to music when vacuuming, as it distracts my concentration, even though vacuuming is not a very complicated task! Yes, the sound of the vacuum cleaner sort of drowns out the music, I can imagine.

Last edited by TheodorN; 06/28/18 05:39 PM.

My YouTube channel

Casio PX-5S. Garritan CFX. Prod. Voices: Grand 2 Gold, Concert Grand Compact, Est. Grand, Studio Grand LE. NI Giant. Galaxy II Blüthner Baby Grand. AcousticSamples C7. AK Studio Grand. Sampletekk Black. Kontakt 5. Reaper.

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