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Crowdfunding for Hardware Testing?

March Audio

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Audio Company
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I am always willing to test things out with what capability I have, although it may be more practical to produce a guide to build the TI ADC I use for measurement. Its simple and cheap and people will be able to perform a lot of measurements themselves.

Equally I dont mid chipping in to fund testing of kit.
 

Mivera

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I shipped my goodie box today. It ended up being a bit bigger than originally intended, so I shipped via the post instead. they said 5 business days. Here's the contents of the package:

1- Intel 3815 SBC with 1 cheap SMPS to power it.

http://ca.mouser.com/ProductDetail/...GAEpiMZZMu3sxpa5v1qrtm%2bsD8dLCdS7y2EJ8OJjq0=

1-USB stick loaded with custom Audiolinux image.

2- 6" long Cat 6 Ethernet cables:

http://www.amazon.com/CablesOnline-...sr=8-5&keywords=6" ethernet&tag=vglnkc7214-20

1- 1 ft cheap USB cable:

http://www.amazon.com/Monoprice-1-5...3886&sr=8-9&keywords=1+ft+usb+cable+monoprice

1- 0.3m expensive USB cable:

http://www.partsconnexion.com/wire_usb_furutech_gt2.html

2- TP link fiber media converters with 1 cheap SMPS to power 1 of them.

http://www.amazon.com/MC220L-Conver...674120&sr=1-3&keywords=TPlink+media+converter

2-TP link single mode minigibc modules:

http://www.amazon.com/TL-SM311LS-Si...7&sr=1-1&keywords=minigbic+single+mode+tplink

10m lc-lc single mode fiber optic Ethernet cable:

http://www.amazon.com/Diablo-Cable-...sr=1-5-catcorr&keywords=lc-lc+single+mode+25'

Melodious MX-U8 USB to AES/EBU/SPDIF/I2S bridge:

http://www.ebay.com/itm/Melodious-M...gital-Audio-Interface-110v-230v-/161855711602

There's several things that can be tested with this stuff.

-HQplayer and all of the different modulators/filters streamed to the NUC to both the IFI DAC and Berkley USB bridge to you ML DAC.

- Noise transferred into the DAC from the NUC when powered by cheap SMPS

- Noise transferred into the DAC when the NUC is powered by clean LPS

- Noise transferred to the DAC from the NUC when the fiber media converters are in place and the one connected to the NUC is powered by cheap SMPS

- Same as above but with FMC powered by clean supply.

- NUC with fiber in place and both FMC and NUC powered by clean supply vs DAC connected direct to server.

- Comparison between USB cables

- Testing of the Melodious MX-U8 USB to AES/EBU/SPDIF/I2S bridge vs your Berkeley USB bridge.

Well I think that should be enough to keep you busy for a bit. If I think of anything else, I'll let you know :)
 

RayDunzl

Grand Contributor
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Wake me up when yer done.
 

Mivera

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Good grief Mike :). My bench is going to cave under the load of all of that....

Ha ha. Well it's not that much stuff really. Probably won't take that long to run all the tests. It will be really good data though. The IFI would probably be the best DAC for most of the testing. Using your Berkeley bridge, I can imagine the isolation from noise getting into the DAC would be much better.
 

Mivera

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Hi Amir,

Your goodie box is out for delivery today. :)
 
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