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TOPIC: OpenDRC-DI vs SHD Studio

OpenDRC-DI vs SHD Studio 1 week 6 days ago #47260

  • rieger
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I'm considering OpenDRC-DI or SHD Studio in my music setup but don't appreciate the differences between the two DSPs. Please advise. Also, I specifically see OpenDRC-DI does not have "bass management" but don't know what this stated limition implies.

Here is my target hardware and audio data flow.
digital source --> DSP --> (Integrated DAC + amp) --> (2 full-range speakers + 1 sub)

Objective:
- Add digital room correction (lower frequencies)
- Add digital cross over correction (mid frequency)
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OpenDRC-DI vs SHD Studio 1 week 5 days ago #47270

  • john.reekie
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Hi, they're quite different as SHD-Studio has Dirac Live but OpenDRC does not. However for your configuration I think you will need the additional channels the SHD Studio has, plus another DAC. [Edit: unless your dac/amp has subwoofer outputs...? what model is it?]

(I'm not sure what you mean by "digital cross over correction "?)
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-> Have you read the User Manual??
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-> Have you posted your config file?
Last Edit: 1 week 5 days ago by john.reekie.
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OpenDRC-DI vs SHD Studio 1 week 5 days ago #47278

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@john.reekie, thanks for the reply. Perhaps my selection should be between DDRC-22D and OpenDRC. Both are fully digital and have the same DSP (ADSP-21369). From their respective product pages, it appears to me Dirac Live is the differentiator between these two products.

I'm using an older integrated amp from Denon (AVR-2803), so it does have a sub line out. I'll look into solutions if I seperate the DAC and amp. Thanks for the heads up.

By "digital cross over correction," I meant using the DSP to correct for frequency response error (such as a notch) and phase errors at the speaker's crossover frequency.
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OpenDRC-DI vs SHD Studio 1 week 3 days ago #47310

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Yes, so with the OpenDRC-DI you need to do your own measurements and and generate FIR filters yourself, whereas DDRC has that builtin with DL.

I guess I'm still confused by the mention of mid-frequency and subs all at once, but FWIW I'm not sure that DL will correct phase at sub frequencies, the FIR filters are only so long. The advantage of the units with four output channels is you can do the sub crossover in the DSP with full control. I guess I'd be inclined to do some measurements through the AVR and just see how far its internal controls get you.
I am not miniDSP support.

"You must ask the right questions." - Dr. Alfred Lanning's hologram.
-> Have you read the User Manual??
-> Have you drawn and posted a diagram?
-> Have you posted a screenshot?
-> Have you posted your config file?
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