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Dirac without losing resolution

I currently have a dac (topping dx9) that is fed by my pc via usb.  I mainly just use tidal.  The dac is connected into an old sony qualia 007 that I just use the built in amp.  That is connected to a pair of audiomachina UM.  I also have a rel #31 sub.

The room is far from ideal with that setup. 12x12 by 10' high ceiling.

I wanted to explore dirac for some room correction.

the issue is that I can't seem to find a way to avoid limiting the resolution to 24/192 or even lower with most dirac endpoints.

They mention that you should put the dirac endpoint (something like one of the minidsp products) between the streamer and the dac.

I was planning on getting a hifirose 130 streamer (in place of the pc).

both the rs130 and dx9 can support up to 768pcm and 512dsd.

I was trying to see if there was a way to place the dirac endpoint on the output of the dx9 dac but not sure if any of the dirac endpoints accept an analog input and then be able to process the signal for the room correction.

jpmomo
jpmomo OP
5 posts
 

Thanks again for the confirmation.

That still leaves the question as to which connections for the input and output to at least get the optimal resolution.

kr4's avatar
kr4
3,676 posts
 

The answer already given is digital and the particular nature would depend on what is available on the specific miniDSP and the HiFi Rose devices chosen.

jpmomo OP
5 posts
 

Let me try and be more specific as I now understand that it needs to be digital.  My PC currently only has USB.  I couldn't clearly confirm if the minidsp devices have USB in and USB out.  That is why I was asking those that are using these devices.

kr4's avatar
kr4
3,676 posts
 

Name the miniDSP devices you are considering.

jpmomo OP
5 posts
 

I am open to any dirac "endpoint" but have been directed to the SHD Studio.

It looks like that is limited to 96kHz.

 

my guess is that I could connect my pc (or hifirose rs130 in the future) to the usb input on the shd studio.  The output would probably need to use the spdif or aes-ebu to the topping dx9.

It looks like it also supports tidal connect so I might be able to connect the shd studio directly to my network via the ethernet port.

the rel 31 sub is currently connect via the amp speaker outputs per rel's recommendation.  It looks like I could change the sub connections to connect to one of the outputs of the shd studio if I wanted to play with those settings.

 

so I have narrowed my questions to the following (thanks to everyone's help):

1. mahler123 mentioned that the minidsp that he has applies DSP up to 24/192.  Which minidsp product is able to do that?  the shd studio looks like it is limited to 96kHz:

Digital Signal Processor 32-bit Floating point Analog Devices SHARC ADSP21489 / 450MHz Internal sample rate: 96kHz 

 

2. the dx9 dac's spec show that the spdif and aes-ebu have the same limits:  up to 24/192

is there a recommended choice between the 2?

3. does dirac further limit the DSP to 48kHz regardless of the shd studio specs?  ex. are the specs for the shd studio of 96kHz referring to their own processing vs dirac?

4. are there any other dirac endpoints that might get better results than the minidsp shd studio?

 

thanks again for everyone's help!

 

 

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