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Old 13th May 2010, 11:55 PM   #901
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Hi fellas,

Okay, I've waited one week. Is this thread being read anymore or is my post a little too germane?

Thanks,
Anand.
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Old 14th May 2010, 12:00 AM   #902
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Quote:
Originally Posted by nycavsr2000 View Post
Brian & Russ (and anybody else who has the answers!):

I am a little late to the game of building up my Buffalo 32S dac (2nd generation). The version of the circuit board is 1.1, purchased in June 2009.

1) The parallel lines marked in 4 spots on the output section of the board should be cut if using this in a standard stereo system (non-headphone system) right? I've been told that the dac sounds a lot better with the lower output impedance.

2) On the reverse side of the board, there appear to be four areas where there are pictographs of resistors at locations R47-R50, I take it this is where I would solder my 2K resistors to set the output voltage to 2V rms output balanced and 1V rms output unbalanced?

3) If I am just using this with standard SPDIF digital input, I don't need to mess with any of the DIP switches right?

Thanks,
Anand.
Sorry for some reason I did not see this till now.

1) If you are driving an amplifier directly I would definitely cut the traces as indicated. It help keep the very fast opamps stable driving capacitive loads.

2) Correct.

3) Correct no need to set any other DIP switch than the one that is labeled "SPDIF"

I apologize for not seeing this earlier.

Cheers!
Russ
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Old 6th January 2011, 06:50 PM   #903
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Thumbs up Buffalo 32S build

You can read about my build here. Includes pictures and description. Later on, I will provide a description on how it compares to 3 other dacs. Stay tuned.

Thanks to Russ and Brian of course.

Anand.
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Old 25th February 2011, 03:46 PM   #904
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After using the buffalo32s on a very audiophile piece of plywood for a year and a half, I finally found some time to build a nice casing. See below for pictures. No front yet but that will be fixed shortly.

My brother designed a nice display. rotary encoder and IR-control for the input selection. When you turn the encoder, the display will light up to 100%. After 5 seconds the light intensity will lower to about 30%.

I still love this DAC, especially with my Squeezebox Touch. Perfect combination.

Scanspeakman
Attached Images
File Type: jpg buffalo32s.JPG (77.2 KB, 880 views)
File Type: jpg dac2.jpg (128.7 KB, 860 views)
File Type: jpg dac3.jpg (73.1 KB, 849 views)
File Type: jpg display1.jpg (85.0 KB, 842 views)
File Type: jpg display2.jpg (93.2 KB, 827 views)
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Last edited by scanspeakman; 25th February 2011 at 03:52 PM.
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Old 1st March 2011, 03:02 AM   #905
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Nice work! I bet it does sound great!
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Old 4th May 2011, 11:41 PM   #906
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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: Tube-I-zator Professional PCB and it's post #519.

Greg
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Old 19th September 2011, 12:59 AM   #907
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Hopefully, some people still read this thread!

Quick question.

I have my Buffalo 32S set for 2V rms through the balanced XLR outputs and 1V rms for single ended. If I want 4V rms balanced/XLR and 2V rms single ended do I remove resistors R47-R50 and replace them with just wire?


Thanks,
Anand.
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Old 20th September 2011, 10:15 PM   #908
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Anand,

Sorry I failed to notice this until now.

Just omit those resistors. Do not jumper.
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Old 1st December 2011, 07:10 PM   #909
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I have been using my Buffalo 32S for quite a while now. Still working great but I came up one digital (optical) input short. So I ordered an extra toslink module and a volumite. Today I have changed the (unused) AES/EBU input for a second toslink input. Works perfect after shorting R7 on the 4:1 MUX (as discribed in the manual).

Since I do not have any analog sources anymore, I wanted to try the volume control of the ESS9018. So I also added a Volumite. This is where I am having a problem. Seems to work fine but the DAC loses lock every 5-10 seconds for a very short while. Disconnected the Volumite and replaced the original firmware on the buffalo32s pcb and everything works fine again (but of course no volume control). Anybody any ideas what might be causing this strange behaviour?

Scanspeakman
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Old 1st December 2011, 07:15 PM   #910
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Sounds like you may need the high bandwidth firmware. The DPLL setting is a bit lower in the volumite firmware than in the original buf32S firmware.

Cheers!
Russ
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