Recent content by BrianDonegan
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Raffle to support victims of the Oklahoma Tornados
http://www.twistedpearaudio.com/relief/relief.aspx On Monday May 20, 2013, a powerful tornado impacted the towns of Moore, Newcastle, and southern portions of Oklahoma City, causing widespread destruction. In the weeks since then, several more tornados have touched down in the area...- BrianDonegan
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- Forum: DIY (Do-It-Yourself) Discussions
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Twisted Pear Audio Opus DAC
Quote: No, there is no NDA on selling chips. We sell as complete units because of the difficulty of assembly, and the cost of parts involved. It would be a bummer to pay for all the parts and ruin them, which is easy to do. It would also be overwhelming for me to build kits and complete...- BrianDonegan
- Post #993
- Forum: DIY (Do-It-Yourself) Discussions
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Bummer news from Par-Metal
This was posted over on DIYAudio: http://firecritic.com/2013/01/23/video-commercial-building-fire-in-north-arlington-new-jersey/- BrianDonegan
- Post #4
- Forum: DIY (Do-It-Yourself) Discussions
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The Opamp thread
No. Tin/Lead does not tarnish. Degradation of old solder joints is typically caused by the acidic flux left on the board (not properly cleaned off in most electronics due to cost).- BrianDonegan
- Post #3,647
- Forum: DIY (Do-It-Yourself) Discussions
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Twisted Pear Buffalo Sabre DAC
Buffalo III with Tridents Placid HD or LCDPS to power the Buffalo + transformer (9V) S/PDIF Level Converter for coax (single or 4-channel if you want multiple sources) TOSLINK optical module to convert Optical to TTL-level S/PDIF USB Module to convert USB to TTL-level S/PDIF Ideally an I/V...- BrianDonegan
- Post #1,279
- Forum: DIY (Do-It-Yourself) Discussions
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Mineral Oil Submersion Cooling
Two additional things to think about with oil cooling... 1) You still need heatsinks on the enclosure to cool the oil. It will absorb the heat, and eventually get up to the same temp as the parts you are trying to cool... it needs to go somewhere. Oil (or water in a car) is used as a...- BrianDonegan
- Post #14
- Forum: DIY (Do-It-Yourself) Discussions
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Parts I need to build Buffalo II with attenuator
For the best possible sound quality, I strongly suggest you use the ES9018's internal digital volume control. You don't "lose bits." it attenuates the output without adding noise, as all analog solutions will do. If you go this route, the Buffalo-III just needs a pot to make it happen.- BrianDonegan
- Post #2
- Forum: DIY (Do-It-Yourself) Discussions
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Twisted Pear Audio Opus DAC
Quote: A single PlacidBP (especially the new HD version) can power both IVY's. It is a feasible setup. You will want to be careful with the routing of the I2S signals, especially in regards to power supply wiring. Try to not cross them. You may be better off putting the...- BrianDonegan
- Post #972
- Forum: DIY (Do-It-Yourself) Discussions
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Twisted Pear Audio Opus DAC
The IVY has both current-input and voltage-input. The voltage inputs feed 2.2K resistors to provide a proper load for the WM8741. You get a fully-differential buffer with filtering.- BrianDonegan
- Post #971
- Forum: DIY (Do-It-Yourself) Discussions
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Raffle To Raise Funds for Flood Relief In Pakistan
I am extending the raffle until Saturday, September 11th. The drawing will be at 9AM EST.- BrianDonegan
- Post #17
- Forum: DIY (Do-It-Yourself) Discussions
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Raffle To Raise Funds for Flood Relief In Pakistan
Our relief raffle for Haiti was a great success, so we are up to it again... Twisted Pear Audio (Russ and I) are holding a raffle to raise money for Doctors Without Borders relief work in Pakistan, following the massive and ongoing flooding. I have set up a page on our site...- BrianDonegan
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- Replies: 21
- Forum: DIY (Do-It-Yourself) Discussions
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Raffle To Raise Funds for Relief In Haiti
Just a final update on this... Citrix Systems (my employer) has come through with $1000 in matching funds. Thanks again to everyone for helping out.- BrianDonegan
- Post #73
- Forum: DIY (Do-It-Yourself) Discussions
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Buffalo II Update
To better accommodate other time zones, I just moved tomorrow's Buffalo pre-order sale up by eight hours, to 12:00 Eastern Time.- BrianDonegan
- Post #70
- Forum: DIY (Do-It-Yourself) Discussions
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Best DIY DAC
I was the one on vacation, and am now back (almost relaxed).- BrianDonegan
- Post #6
- Forum: DIY (Do-It-Yourself) Discussions