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Buffalo II

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#201
mine are here too, arrived late this afternoon when I had given up for the day. I wouldnt worry too much about the tracking mate, USPS tracking is possibly the most useless of them all. almost always the last info they have is the point just before it leaves the US and then it appears not to move until it shows up unannounced. didnt have time to power it up today, but its all ready with the AVCC reg in place and I have tested the 2output stages i'm going to test it with and all is well, so tomorrow when I can crank it up, i'll have something more to say other than i'm quite impresed with the compact build and short as short decoupling paths.
 
#209
Hi Brain,

I have the Metronome from you years ago,
Will the cd playback ok as fallows?

cdpro2......Metronome......buffalo

DATA..........D ................D2
WCLK.........LRC............. D1
SCLK..........BCK............ DCK
Gnd ..........Gnd..............Gnd

how about the fallowing connection?, do i need it?
​

MCk...........SCK............?????

Thanks Again
Arthur
 
#210
arthur said:
Hi Brain,

I have the Metronome from you years ago,
Will the cd playback ok as fallows?

cdpro2......Metronome......buffalo

DATA..........D ................D2
WCLK.........LRC............. D1
SCLK..........BCK............ DCK
Gnd ..........Gnd..............Gnd

how about the fallowing connection?, do i need it?
​

MCk...........SCK............?????

Thanks Again
Arthur
Click to expand...


That should work. You should not need MCK/SCK.
 
#211
ivy3

Hi Brian,

Thanks for your answer.

Can i simply use the opa1632 balance output stage to connect to a unbalance preamp input(+ve pin and gnd pin), as the driving power of 1632 is better?

Lastly i want to buy Joshua Tree kits from your homepage but everything is out of stock😱

Regards
Arthur
 
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#212
ES9018 heat?

Was wondering how warm/hot the Sabre chip runs on the Buffalo II PCB?

Was intending to mount it bottom side flush (with reliefs cut for misc capacitors and inductors) on a piece of spruce like my Attraction DAC.

Russ, any opinion if this would overheat the chip or not?
 
#219
fierce_freak said:
Anyone using transformers for output? If so, I'm curious to see your scheme or parts choice.
Click to expand...

I've got a custom 48% nickel core pair ordered from Bud Purvine at Onetics. The primary will simply be connected between + and - outputs (for each DAC channel) and primary's center tap left floating.

1:1 ratio for a single ended output voltage of around 3.03V peak to peak dependant upon AVCC voltage. Or ground the secondary's center tap for a balanced output.

Simple. Hopefully not too much so.
 
#220
steve jones said:
I've got a custom 48% nickel core pair ordered from Bud Purvine at Onetics. The primary will simply be connected between + and - outputs (for each DAC channel) and primary's center tap left floating.

1:1 ratio for a single ended output voltage of around 3.03V peak to peak dependant upon AVCC voltage. Or ground the secondary's center tap for a balanced output.

Simple. Hopefully not too much so.
Click to expand...

Can you link please to those trafos?
 
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