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Old 19th April 2011, 01:06 AM   #1301
LeonvB is offline LeonvB  Netherlands
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Strictly spoken you don't need I/V stages. But the DAC will perform better if you do include them. A BOM is included in the integration guide, which can be found in the document repository (Twisted Pear Audio Document Repository). The choice for IVY or Legato is IMO a matter of taste.
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Old 19th April 2011, 01:47 AM   #1302
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Hi Leon, thanks for the super fast response! My apologies, but I'm not down with all the acronyms yet. By BOM do you mean Buffalo user manual?
Thanks
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Old 19th April 2011, 01:50 AM   #1303
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Sorry Leon
BOM = bill of materials!
Learning fast lol :-)
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Old 19th April 2011, 08:17 PM   #1304
zkdaz is offline zkdaz  United Kingdom
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Brian

Is the scheduled 'stampede'for buffalos on April 24th going to happen? Being Easters Sunday and so soon after your vacation.

Thanks

Dan
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Old 24th April 2011, 05:17 PM   #1305
zkdaz is offline zkdaz  United Kingdom
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Well I guess not. Please can you update us on the release schedule for BII and other hard to get parts like placids and tridents, I have finally decided to take the plunge and build my first system;

XMOS USB when released
Buffalo II with Tridents
IVY III but I will buy the Trident III too and experiment
Sympaticos
Lowther DX4 drivers in 18" radius open baffles

now I just want to get on with buying and building it all.

Thanks

Dan
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Old 5th May 2011, 05:18 AM   #1306
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Default I promised some people a review of the Buffalo II with Tube-I-zator boards in output.

Here is the link on the Tube-I-zator board DYIAUDIO web page for pictures and a small review of the Buffalo II and Tube-I-zator SRPP output stage boards. Phenominal sound quality and I highly recommend building one!! Please ask questions if you have them. The link is here: http://www.diyaudio.com/forums/group-buys/156149-tube-i-zator-professional-pcb-52.html#post2561770 and it's post #519.

Greg
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Old 5th May 2011, 02:17 PM   #1307
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I just finished my Buffalo test setup:

Click the image to open in full size.

Click the image to open in full size.

The sound is very, very good. It is a great DAC.

I have some questions:

1. Legato should get from the PS 12V. Has anybody tried higher voltage - 13 or even 14 Volts ? If yes, than how does it affect the sound ?

2. I think that Tridents combo will be my next step and then ? Buffalo dual mono or better invest in two additional BP Placids for Legato ?

Anybody uses Legato with three BP Placids ? How does it influences the sound quality ?
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Old 5th May 2011, 02:51 PM   #1308
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Re: the Legato, yes some users have tried higher voltages to good effect. The general consensus is that the voltage across the I/V resistor (R 1-4 on Legato 2?) should be set to about V+/2 -1. I use +15v and then adjust V- until there is ~6.5v across any of the 4 150R resistors. I suggest shunting 80-90 ma on the Placid BP.

Re: Tridents, the 1.2v VDD trident makes a huge difference in the performance of my system. Recommended! The Placid will run warm supplying Tridents so plan on a well ventilated chassis.

Enjoy!
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Old 5th May 2011, 03:48 PM   #1309
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Quote:
Originally Posted by francolargo View Post
I use +15v and then adjust V- until there is ~6.5v across any of the 4 150R resistors.
Edit: I think the layout may have changed from the early version 2 schematic because I only remember two IV resistors on my Legato 2. they are the outermost of the three parallel 1W resistors, IIRC.
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Old 5th May 2011, 04:19 PM   #1310
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Send a message via Yahoo to Lil Knight
Any idea about when more BII kits be available?
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