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Joined: 2/6/2013(UTC) Posts: 26  Location: Paris Thanks: 4 times
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Hi,
I've ordered a BIII from the new batch, here is a brief summary of my project and some questions about how to set this up.
Devices
- 1 Buffalo III with 4x IVY I/V
- exa2UI USB to I2S interface
- Mac Mini
Purpose
- Active 3-way stereo filtering
- Stéréo output for my headphones
I am wondering how :
- I could swap output mapping through software (from multi-channel to stereo mode)
- To physically wire the DAC to all the IVYs as some dacs would share channels depending on the output mapping
Or do you think I can just use the DAC in multi-channel setup, routing 6 channels with crossovers + 2 channels directly to the headphone out ?
By the way, I think my headphones deserve the full benefits of using the dac in pure stereo mode though ;-)
Thanks for your help !
neofeed
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Rank: Member
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Joined: 1/19/2011(UTC)
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Have a look here under "QUANTIZER SETTING". http://hifiduino.wordpress.com/sabre32/Near the end of the section (quantizer setting) there is a quote from one of the developers. If I understand it correctly you should be able to merge the dac`s by setting the quantizer setting to 9bit. Also setting the setting to 6bit or 7bit would result in multichannel operation. See page 27 in the integration guide. If I am not mistaken that would mean that you only wire the headphones to one of the IVY`s and make a switch to set SW1:1 and SW1:2 both to on (via the EXT_IO header) when you want to listen to headphones. I wonder how many amps mute the output when there is a headphone plugged in, perhaps a bit of thought could mean that you could trigger the SW1 and 2 settings by simply plugging in or out your headphones? Edited by user Thursday, April 4, 2013 3:14:29 PM(UTC)
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 1 user thanked gwikse for this useful post.
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Rank: Member
Groups: Member
Joined: 2/6/2013(UTC) Posts: 26 Location: Paris Thanks: 4 times
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Originally Posted by: gwikse  Have a look here under "QUANTIZER SETTING". http://hifiduino.wordpress.com/sabre32/Near the end of the section (quantizer setting) there is a quote from one of the developers. If I understand it correctly you should be able to merge the dac`s by setting the quantizer setting to 9bit. Also setting the setting to 6bit or 7bit would result in multichannel operation. See page 27 in the integration guide. Thanks for the link and infos ! I've read the thread but it mainly talks about input switching where I'm looking for output switching. Interesting reading though as a start to solve my problem :) Originally Posted by: gwikse
If I am not mistaken that would mean that you only wire the headphones to one of the IVY`s and make a switch to set SW1:1 and SW1:2 both to on (via the EXT_IO header) when you want to listen to headphones.
You're absolutely right except that I need a stereo XLR out to my headphone amp (but equal). Question is : are SW1 and SW2 able to be remote controled ? (either by software or via I2C) Originally Posted by: gwikse I wonder how many amps mute the output when there is a headphone plugged in, perhaps a bit of thought could mean that you could trigger the SW1 and 2 settings by simply plugging in or out your headphones? Seems to be a good thought, need to dig a little to know if this could work with the headphone amp though.
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