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Got the Toslink module vcc and ground hooked on the buffalo II dac , the 2 outgoing wires from the toslink went on the D2 and ground of the buffalo II dac . ,
got my rca wires hooked on the out + and ground , and they are going to my integrated amp . ,
the toslink is going to my QA-550 which is a SD card player with a toslink output . ,
So i taught i done things right but i'm guessing wrong cause no sound coming out at all .Guess things sometimes are not always what they seem .
Any feedback would be helpful
regards
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Rank: Advanced Member
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The toslink module should be connected to the D1 input at Buffalo. Remember to set the SPDIF switch to closed.
Seems like you are not using an I/V stage?? That means the DAC is operating in voltage output mode > THD+N will suffer. You are also just taking out half of the balanced signal from the DAC > poorer performance. You will get a lot better results by using an IVY or Legato.
Good luck!
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Rank: Member
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Joined: 8/25/2010(UTC) Posts: 42 Location: south of
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i did go for the Legato , that was my next soldering job , i was overly anxious to try out the dac and see if all soldering was ok before going to the Legato ,
toslink won't respond either on D1 or D2 ,
Toslink is getting her 2.990V , the DAC is being fed her 5.5V , mute light is on ,
When activating the SPDIF switch does the Led light up ?
more ideas are welcome
regards
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You would have roughly 1.65V DC offset if your using just +out and GND. Not a good thing... If you are using D1 for input the SPDIF switch should be open. (check it with a meter is you need to) Edited by user Monday, September 6, 2010 6:55:35 PM(UTC)
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Rank: Advanced Member
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Joined: 6/12/2008(UTC)
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Location: Norway
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The toslink module should have more than 5V, I guess 2,99V is to low to make it work. How is the toslink connected to your PSU?? Have you measured voltage out on PSU when loaded??
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Rank: Member
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Joined: 8/25/2010(UTC) Posts: 42 Location: south of
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ok so , up from neutral to 1st gear ...
hooked the VCC to the the placid so i can get the minimum 5V required to activate the Toslink ,
the dac itself only gives out as previously mentioned 2.990V +- .
the DAC recognized it as it indicated it with the mute turning off and the Lock led indicator turning on .
least now the single Placid and the Buffalo II is operating . , so should be good to go next step which is the Legato I/V stage .
Thanks for the feedback
regards
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Rank: Member
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Joined: 8/25/2010(UTC) Posts: 42 Location: south of
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Indeed Stein i switched to the Placid to get my Toslink power , it does fluctuate at + - 0.010V,
maybe down the road i will parallel the transformer which could give more stable readings...
so all is so far so good
regards .
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Rank: Member
Groups: Member
Joined: 8/25/2010(UTC) Posts: 42 Location: south of
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Meantime i have added a transformer in between the DAC and the integrated Amp that gives +12db for extra volume , good for now , will leave the DAC loosen up a bit .
regards
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