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Old 23rd March 2010, 04:51 PM   #211
arthur is offline arthur
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Buffalo II
Default 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

Last edited by arthur; 23rd March 2010 at 04:54 PM.
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Old 23rd March 2010, 09:02 PM   #212
steve jones is offline steve jones  United States
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Default 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?
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Old 24th March 2010, 10:53 AM   #213
Spirit02 is offline Spirit02  Peru
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Mine has arrived too

Estimated delivery time: 6 days
Actual delivery time: 3 days

Construction will start next week after I finish a couple of assignments...
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Old 24th March 2010, 11:24 AM   #214
acidbrain is offline acidbrain  Netherlands
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Buffalo II
Received mine without TAXES !
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Old 24th March 2010, 05:16 PM   #215
io is offline io  Hungary
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also Received mine without TAXES !

Hungary
Thanks
io
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Old 24th March 2010, 05:20 PM   #216
io is offline io  Hungary
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also Received mine without TAXES !

Hungary
Thanks
io
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Old 24th March 2010, 06:04 PM   #217
muizel is offline muizel  Netherlands
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Quote:
Originally Posted by acidbrain View Post
Received mine without TAXES !
Hi Eric,

Super that you have him allready I am also in the nethetlands, what was your shipping date ?


Greetz René.
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Old 24th March 2010, 06:16 PM   #218
fierce_freak is offline fierce_freak  United States
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Anyone using transformers for output? If so, I'm curious to see your scheme or parts choice.
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Old 24th March 2010, 07:20 PM   #219
steve jones is offline steve jones  United States
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Quote:
Originally Posted by fierce_freak View Post
Anyone using transformers for output? If so, I'm curious to see your scheme or parts choice.
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.
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Old 24th March 2010, 07:36 PM   #220
Joshua_G is offline Joshua_G  Israel
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Quote:
Originally Posted by steve jones View Post
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.
Can you link please to those trafos?
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