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soundcheck  
#1 Posted : Saturday, August 16, 2008 12:37:14 PM(UTC)
soundcheck

Rank: Member

Groups: Member
Joined: 8/10/2008(UTC)
Posts: 13

Hi folks.

I'd appreciate some advice.

I today installed the DAC.

I am feeding the DAC 16bit/44.1 I2S. As PS I take 2* 7,4V NiMh RacePack Batteries.

I am running directly out into the amp without IVY. ( + and G connected)

This all should be OK according to the other threads I opened earlier.

The DAC seems to lock -- at least the lock-LED is on.

The DAC starts playing music but I hear constant scratchy noise in between, sounds like typical
XRUNS.

What am I doing wrong here?

THX


PS:

Some small advise related to the documentation:

The dip switch explanation could be a bit more specific. Default (as I received it) is actually Off and not + as described.
As far as I understood at DIY-Audio. Switch 3 should be - . Why not making this the default value.

THX a lot
soundcheck  
#2 Posted : Sunday, August 17, 2008 2:09:01 AM(UTC)
soundcheck

Rank: Member

Groups: Member
Joined: 8/10/2008(UTC)
Posts: 13

Hi folks.

I got it going. I ran into 64FS problem on the I2S bus. Now I am using my DDDAC-PCM2707 receiver.

I experienced some strange hickups in the first 10 minutes of playing. After a while
this disappeared. !?!?

Anyhow sound is good but not overwhelming yet. I wonder if the DAC needs some time to break-in?

Two questions:

How about decoupling the I2S input ??? I read that Russ recommended it for D1 input and SPDIF if I recall it correctly?
Do I have to put some 10R or similar in the lines?

How about filtering the analog out? I read that you guys introduced a filter on IVY to get rid of some HF junk produced by the
Sabre? How would that have to look like if I ran directly from Sabre to Amp?

THX
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