HiFI Shield 2 and XLR outputs

Post Reply
tgraybam
Posts: 6
Joined: Sun Mar 15, 2015 8:46 am
languages_spoken: english
ODROIDs: C, C1, C2, U3, XU4 (VU, cameras, displays, HiFi Shield)
Has thanked: 1 time
Been thanked: 1 time
Contact:

HiFI Shield 2 and XLR outputs

Post by tgraybam » Tue Apr 07, 2020 10:29 am

Hi! I love your products.

I just purchased the HiFi Shield 2 and I understand from previous posts that right edge of the shield contains the 7 contacts for balanced output.

Am I right in reading your post here (viewtopic.php?t=27063) that I could simply attach XLR connectors to the appropriate contacts and they would work? Or is there more to it than that?

I would love to take balanced output from the HiFi Shield 2 DAC to the balanced inputs on my headphone amp.

Many thanks for any help or advice you could provide!

-- Tony

User avatar
odroid
Site Admin
Posts: 34091
Joined: Fri Feb 22, 2013 11:14 pm
languages_spoken: English, Korean, Japanese
ODROIDs: ODROID
Has thanked: 662 times
Been thanked: 609 times
Contact:

Re: HiFI Shield 2 and XLR outputs

Post by odroid » Tue Apr 07, 2020 11:15 am

XLR 3pin connector must be enough for each channel.

tgraybam
Posts: 6
Joined: Sun Mar 15, 2015 8:46 am
languages_spoken: english
ODROIDs: C, C1, C2, U3, XU4 (VU, cameras, displays, HiFi Shield)
Has thanked: 1 time
Been thanked: 1 time
Contact:

Re: HiFI Shield 2 and XLR outputs

Post by tgraybam » Tue Apr 07, 2020 11:28 pm

odroid wrote:
Tue Apr 07, 2020 11:15 am
XLR 3pin connector must be enough for each channel.
Ok, great. Thanks! I will report on how it goes... :)

-- Tony

User avatar
odroid
Site Admin
Posts: 34091
Joined: Fri Feb 22, 2013 11:14 pm
languages_spoken: English, Korean, Japanese
ODROIDs: ODROID
Has thanked: 662 times
Been thanked: 609 times
Contact:

Re: HiFI Shield 2 and XLR outputs

Post by odroid » Wed Apr 08, 2020 9:46 am

Yes! please.
We've not seen any working balanced output yet in the real world.
We just measured the balanced output sine wave signal with Audio-precision equipment.

User avatar
rooted
Posts: 7595
Joined: Fri Dec 19, 2014 9:12 am
languages_spoken: english
Location: Gulf of Mexico, US
Has thanked: 656 times
Been thanked: 173 times
Contact:

Re: HiFI Shield 2 and XLR outputs

Post by rooted » Thu Apr 09, 2020 11:33 am

Are they reversed like the standard outputs or was that just a mechanical mistake and not in the traces?

User avatar
odroid
Site Admin
Posts: 34091
Joined: Fri Feb 22, 2013 11:14 pm
languages_spoken: English, Korean, Japanese
ODROIDs: ODROID
Has thanked: 662 times
Been thanked: 609 times
Contact:

Re: HiFI Shield 2 and XLR outputs

Post by odroid » Thu Apr 09, 2020 11:42 am

We just don't have an amplifier which can accept the balanced signal.
http://www.aviom.com/blog/balanced-vs-unbalanced/

User avatar
rooted
Posts: 7595
Joined: Fri Dec 19, 2014 9:12 am
languages_spoken: english
Location: Gulf of Mexico, US
Has thanked: 656 times
Been thanked: 173 times
Contact:

Re: HiFI Shield 2 and XLR outputs

Post by rooted » Thu Apr 09, 2020 1:19 pm

I meant the standard outputs are reversed, white should be red and red should be white.

I was wondering is this the same on the balanced outputs and would this need to be addressed or are the red and white outputs reversed due to the mechanical connections being wrong?

User avatar
odroid
Site Admin
Posts: 34091
Joined: Fri Feb 22, 2013 11:14 pm
languages_spoken: English, Korean, Japanese
ODROIDs: ODROID
Has thanked: 662 times
Been thanked: 609 times
Contact:

Re: HiFI Shield 2 and XLR outputs

Post by odroid » Thu Apr 09, 2020 4:41 pm


User avatar
rooted
Posts: 7595
Joined: Fri Dec 19, 2014 9:12 am
languages_spoken: english
Location: Gulf of Mexico, US
Has thanked: 656 times
Been thanked: 173 times
Contact:

Re: HiFI Shield 2 and XLR outputs

Post by rooted » Sat Apr 11, 2020 7:44 am

odroid wrote:Check the schematics.
https://dn.odroid.com/homebackup/201610/
I left my EE degree in my other pants :)
These users thanked the author rooted for the post:
tgraybam (Thu Apr 30, 2020 3:57 am)

tgraybam
Posts: 6
Joined: Sun Mar 15, 2015 8:46 am
languages_spoken: english
ODROIDs: C, C1, C2, U3, XU4 (VU, cameras, displays, HiFi Shield)
Has thanked: 1 time
Been thanked: 1 time
Contact:

Re: HiFI Shield 2 and XLR outputs

Post by tgraybam » Thu Apr 30, 2020 3:58 am

That's awesome.

tgraybam
Posts: 6
Joined: Sun Mar 15, 2015 8:46 am
languages_spoken: english
ODROIDs: C, C1, C2, U3, XU4 (VU, cameras, displays, HiFi Shield)
Has thanked: 1 time
Been thanked: 1 time
Contact:

Re: HiFI Shield 2 and XLR outputs

Post by tgraybam » Thu Apr 30, 2020 4:01 am

odroid wrote:
Thu Apr 09, 2020 11:42 am
We just don't have an amplifier which can accept the balanced signal.
http://www.aviom.com/blog/balanced-vs-unbalanced/
I have a balanced amp and will test balanced output from the Odroid soon -- just waiting for the connectors to arrive for the build!
These users thanked the author tgraybam for the post:
odroid (Wed May 06, 2020 3:47 pm)

Post Reply

Return to “I2S Devices (HiFi Shield DAC and Stereo Boom Bonnet Kit)”

Who is online

Users browsing this forum: No registered users and 2 guests