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Theta Cassablanca 3 setup related question and request for input

I am contemplating buying a CB3 HD with 4k, and 2 premium DACs. But it doesn’t have DIRAC like in CB4.
Currently have a Krell Foundation that can be set up using ARES. So, I am hesitant to buy something without room correction software.
Being a new potential user of Theta, I am looking for some input from veteran CB users.

Will I be able to set up CB3 manually that will sound as good or at least close to as good that is set up using DIRAC? Or is it going to be quite a big difference in SQ due to not using DIRAC?
Is there any option to use external Room Correction equipment paired with CB3? Like - can I use  MiniDSP DDRC-88A Dirac Live processor by setting it up in between my Source Oppo and Theta CB3 to accomplish what comes as integral part of CB4? This is possibly $1000 investment.
I will use 5.2 set up with two Rythmik Subs and Revel Speakers.

Will appreciate any help!
gbabu5y
gbabu5y OP
7 posts
 
I am almost pulling the trigger for CB III HD. Not sure if I will hear significant difference between CB and my current Krell Foundation... Since the Theta is used, I am not going to be on hook for a huge potential disappointment if it doesn't prove to what many claims - one of the five best Processor of the world, Meridian, Datasat, Trinnov & Bryston included!
auxinput
2,920 posts
 

Let us know what you think.  Changing processors can be expensive.  If you are buying from Craig Shumer from Theatermax, he does not offer returns, so you'd have to try to sell it on your own if it doesn't work out.  But, he does offer his own full warranty on any upgraded Theta you buy from him.

I went through three different processors when I was looking to upgrade from my old Krell HTS 7.1, before just deciding to go back to Krell with a S1200.  It definitely was an expensive journey.

"One of five best processors in the world" is really based on the eye of the beholder.  Some people will put Datasat and Trinnov into that area.  It all depends on what you think makes up the best.  Datasat and Trinnov have very specific processing features, but I do not think either of them have the best analog stages.  Same for Meridian.  Bryston has good analog stages, but poor DAC/digital card and their analog stage is voice to be soft/laid back.  Bryston's new "SP4" offering might be better on the DAC/DSP side, since they are adopting the base Storm Audio product as their base platform and plan on implementing their own discrete Class A analog output stages.

gbabu5y OP
7 posts
 
Sure I will, but it will be sometime later, as my HT room is going to take a while to be completed - a month or so. Honestly, I don't have any thing to complain about Krell Foundation, it is truly very enjoyable machine. However, I just want to try a different one. If it doesn't meet my expectation (benefit/cost ratio-wise), I always will have a fallback option - back to Foundation:)
gbabu5y OP
7 posts
 

auxinput, I finally bought the Theta CB III HD. Got shipped. Opened the box, it's black. Looks good. Its about 10 years old, upgraded from CB III to III HD last year. Trying to determine if I should further upgrade ...
I am also looked at MINIDSP DDRC 88D/BM to have the room correction ability. It is not as powerful as DIRAC of CB IV or IVa, but good enough for the money. BM option give option to control the Subs as well. 
auxinput
2,920 posts
 
Cool.  It must be exciting for you.  I would say to get the CBIII hooked up and see if it sounds good at that point.  The DDRC 88D will adjust or degrade sound quality because it has to convert all analog to digital to do the Dirac processing.  Then it has to convert back to analog using it's own internal DACs.  If you feel you still need Dirac, then you can get it.
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