Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error

Login
Issue Buffalo III DAC dropouts with S/PDIF connection - Dropouts with S/PDIF Coax connection or Apple Airport Express
Options
View
Go to last post Go to first unread
Previous Topic Next Topic
***markus  
#1 Posted : Wednesday, March 1, 2017 4:32:23 PM(UTC)
***markus

Rank: Member

Groups: Member
Joined: 1/22/2017(UTC)
Posts: 3
Germany
Location: Stuttgart
Hello together,

I have a very simple setup with just the Buffalo III DAC board (new one from this year) with the Tridents and the Toslink adaptor. S/PDIF connection is directly via D1, D2 - D8 are not connected. All DIP switches are in default position. Output is via two Sowter 3603 transformers to my preamp.

When S/PDIF Toslink is used from my CD player I have a brilliant output, very impressive. When I use S/PDIF Coax from my CD player I have constant irregular dropouts every few seconds. The same is when I use Toslink via Apple Airport Express - constant dropouts. Actually I am not sure if the effect is caused by the same problem. Maybe the signal from the Coax output is too weak and I should use an S/PDIF adaptor board therefore (like S/PDIF 4:1 MUX)? Maybe the DAC has a problem with the Airport clock signal?

Any advice or recommendation is highly welcome!

Regards,
Markus
Back to top

Wanna join the discussion?! Login to your Twisted Pear Audio Support forum accountor Register a new forum account.
Back to top  
Brian Donegan  
#2 Posted : Monday, March 6, 2017 8:58:23 PM(UTC)
Brian Donegan

Rank: Administration

Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 2,868
Location: Massachusetts, USA

Thanks: 2 times
Was thanked: 141 time(s) in 134 post(s)
Are you trying to connect the Coax S/PDIF directly to the D1 pin? This will not work, since the S/PDIF is consumer level (+/- 0.5V p-p), and the D1 requires TTL-level S/PDIF. We sell S/PDIF level-converters for this application.
Back to top
WWW
***markus  
#3 Posted : Tuesday, March 7, 2017 8:31:46 AM(UTC)
***markus

Rank: Member

Groups: Member
Joined: 1/22/2017(UTC)
Posts: 3
Germany
Location: Stuttgart
Thank you for the feedback Brian. That makes sense to me. We are talking of the single S/PDIF level converter, as mentioned in the integration guide, right?

Right now I have checked the Toslink adaptor again. It was configured for TTL level output. So this was the reason I assume, why it did not work properly, when directly connected to the DAC. Interestingly it worked fine with the output from my CD player.
Back to top
***markus  
#4 Posted : Tuesday, March 7, 2017 9:03:09 AM(UTC)
***markus

Rank: Member

Groups: Member
Joined: 1/22/2017(UTC)
Posts: 3
Germany
Location: Stuttgart
Disappointingly the single s/pdif level converter is now (also) sold out in the shop. Actually I don't want to buy the S/PDIF-4 input board, with the need for an additional switching solution, as I am aiming for a very simple and lean setup. In fact my first choice would have been the Buffalo III/SE, but this is also sold out... What would be the second best choice?
Back to top
Brian Donegan  
#5 Posted : Thursday, March 9, 2017 2:27:16 AM(UTC)
Brian Donegan

Rank: Administration

Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 2,868
Location: Massachusetts, USA

Thanks: 2 times
Was thanked: 141 time(s) in 134 post(s)
The single S/PDIF module is back in stock. Inventory count was wrong.

I expect a large batch of boards in the next few days. They will include BIIIse boards, so they too should be back in stock shortly.
Back to top
WWW
Rss Feed  Atom Feed
Users browsing this topic
GuestUser
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Youtube
Copyright © Twisted Pear Audio