Welcome, Guest
Username: Password: Remember me

TOPIC: Ambitious 13.4 Atmos.. let's DO this!

Ambitious 13.4 Atmos.. let's DO this! 5 months 6 hours ago #31296

  • Brenton9
  • Brenton9's Avatar
  • Offline
  • Fresh Boarder
  • Posts: 6
  • Karma: 0
OK all:

MiniDSP me through a 13.4 Atmos system (L/C/R, Wide L/R, Height L/R-front and rear overhead-, and L/R Side and L/R Surround Back).
Here's where it gets tricky: I want dedicated subs on the front L/C/R's, as well as the Rear Surround L/R's, plus 4 subs for LFE.

How many 88A's? 2x4's, etc? Assume pre-out inputs from AVR. I need to break out speakers and subs for L/C/R and Surr L/R first, then calibrate, then locate and DSP the 4 LFE subs, then master DSP calibration, correct? OK, let's see the brainpower, because once this is pulled off, it will doubtless lead to a few new products from MiniDSP (saving us ALL tons of heartache and cabling!), plus there will be many more that will out-do this setup once complete.

(FYI: please save the "you don't need that many subs," or "that's too much engineering," or "you could do as much with far less." I'm looking to follow the same conventions as CAT. If you've heard a CAT system calibrated (DSP'd) properly, there is no discussion necessary about the merits- and use- at any sound level from background music to peel-your-skin... of 4 to 100 subs. It's about maximizing the reach of even, smooth, dynamic bass response no matter the listening position without perceptible haptic differences in SPL based upon proximity to a sub. i.e: when you use 2 subs when you need 4-6, and you simply increase SPL, it is ABSOLUTELY detectable when you move close to either one of the two subwoofers. You FEEL the location of the sub because of your proximity to it. This makes the "non-directional" benefits of the sub moot, as they now become directional. With multiple subs, you simply don't feel it at all. It's just smooth and even and fast and tight- everywhere. You've either heard it done right, and you understand, or you haven't and don't... and that's OK.. just please don't knock it until you've actually experienced it yourself, firsthand).

And........GO!
Last Edit: 5 months 6 hours ago by Brenton9.
The administrator has disabled public write access.

Ambitious 13.4 Atmos.. let's DO this! 5 months 5 hours ago #31297

  • bobc455
  • bobc455's Avatar
  • Offline
  • Junior Boarder
  • Posts: 28
  • Thank you received: 9
  • Karma: 1
Do I count correctly - 9 subs?

-Bob C.
The administrator has disabled public write access.

Ambitious 13.4 Atmos.. let's DO this! 4 months 4 weeks ago #31300

  • john.reekie
  • john.reekie's Avatar
  • Offline
  • Platinum Boarder
  • Posts: 2690
  • Thank you received: 1099
  • Karma: 111
Assuming you agree that the subwoofers should all be EQed/room-corrected as a single unit, you can use 2 x DDRC-88A and 2 x 2x4. Otherwise, 3 x DDRC-88A.

HTH
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?
The administrator has disabled public write access.
The following user(s) said Thank You: Brenton9

Ambitious 13.4 Atmos.. let's DO this! 4 months 4 weeks ago #31312

  • Brenton9
  • Brenton9's Avatar
  • Offline
  • Fresh Boarder
  • Posts: 6
  • Karma: 0
Yes Sir!
The administrator has disabled public write access.

Ambitious 13.4 Atmos.. let's DO this! 4 months 4 weeks ago #31313

  • Brenton9
  • Brenton9's Avatar
  • Offline
  • Fresh Boarder
  • Posts: 6
  • Karma: 0
Sorry; new poster here. Yes, but 5 will be utilized the "bottom octave driver" of the L/C/R and Surround L/R channel speakers.
The administrator has disabled public write access.

Ambitious 13.4 Atmos.. let's DO this! 4 months 4 weeks ago #31314

  • Brenton9
  • Brenton9's Avatar
  • Offline
  • Fresh Boarder
  • Posts: 6
  • Karma: 0
Hi John:

The subs will be individually EQ'd as follows: L/C/R main and surround L/R subs will be calibrated as the bottom octave driver of each individual speaker. The LFE's will need to be individually calibrated for time-alignment/location, but then, yes, the LFE's will be room-corrected as a single "LFE channel." Is this your understanding/recommendation, as well? Thanks much!
The administrator has disabled public write access.

Ambitious 13.4 Atmos.. let's DO this! 4 months 4 weeks ago #31327

  • john.reekie
  • john.reekie's Avatar
  • Offline
  • Platinum Boarder
  • Posts: 2690
  • Thank you received: 1099
  • Karma: 111
Well I don't quite understand exactly why you designate some subs as "the bottom octave driver of each individual speaker"... if that means that you want to calibrate that sub and the speaker on one Dirac channel, and not use bass management and calibrate the subs with the rest of the LFE subs, then you'd need the 3 x DDRC-88A option.

Probably would be help to draw up some sort of diagram ;)
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?
The administrator has disabled public write access.

Ambitious 13.4 Atmos.. let's DO this! 4 months 4 weeks ago #31331

  • Brenton9
  • Brenton9's Avatar
  • Offline
  • Fresh Boarder
  • Posts: 6
  • Karma: 0
That is correct. One sub for each of the L/C/R and Surround L/R, then 4 subs for LFE channel (probably 2 subs each on the 2 separate Atmos LFE channel outputs).

In considering your suggestion, it seemed like the DDRC-88A to 2x4HD would give me a two single channels (L/R for example) out of the DDRC-88A, into the 2x4 HD, then one output each for the Left Front speaker and Left Front speaker Sub (calibrated together as the "Left Front Speaker"), and one output each for the Right Front speaker and Right Front speaker sub (also calibrated together as the "Right Front Speaker"). The same for the Center speaker (one channel out of DDRC-88A to 2x4HD) into one input, and one output each for the Center speaker and Center speaker Sub, calibrated as "Center Speaker."

Then the same treatment for the Surround L/R, and then LFE. For LFE, one sub out of the processor to the DDRC-88A, then that channel out of DDRC-88A to one input 2x4HD, then one output each to 2 subs (calibrated as "LFE Left"), and the same config for the right.

I think that makes sense. One last complication, if I may (since you guys solved the primary config easily!).

If I want to use multiple subs for the Center Speaker, for example, could I just use a 2x4HD (input from DDRC-88A center channel output), and then 4 outputs from the 2x4HD (one for center channel speaker and the other three for 3 subwoofers attached to the center channel), then calibrate all four outputs (Center channel speaker and 3 center channel subs as "Center Channel Speaker")?

I hope I'm getting that right...

Thanks very much!!
The administrator has disabled public write access.

Ambitious 13.4 Atmos.. let's DO this! 4 months 3 weeks ago #31344

  • john.reekie
  • john.reekie's Avatar
  • Offline
  • Platinum Boarder
  • Posts: 2690
  • Thank you received: 1099
  • Karma: 111
Brenton9 wrote:
If I want to use multiple subs for the Center Speaker, for example, could I just use a 2x4HD (input from DDRC-88A center channel output), and then 4 outputs from the 2x4HD (one for center channel speaker and the other three for 3 subwoofers attached to the center channel), then calibrate all four outputs (Center channel speaker and 3 center channel subs as "Center Channel Speaker")?

I believe that would work.

However I wonder if you are aware of the capabilities of the DDRC-88BM plugin. Also, there's a DDRC-24 that might even fit into the picture. Depends on whether you are doing bass management or not (you haven't actually said, I don't think).
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?
The administrator has disabled public write access.

Ambitious 13.4 Atmos.. let's DO this! 4 months 3 weeks ago #31345

  • Brenton9
  • Brenton9's Avatar
  • Offline
  • Fresh Boarder
  • Posts: 6
  • Karma: 0
I definitely would like to utilize both bass management plugin and am completely open to DDRC-24.. that's why I'm reaching out to the experts.. as long as you understand what I'm trying to do, I'm totally open and curious as to how best to get it done.. if you have any questions on my config, please don't hesitate to ask, so I can clairify. If you already have all the info you need to recommend a minidsp configuration and any setup help you can, I would be most appreciative!!
Thanks so much, and I look forward to getting some specific recommendations on implementation!
The administrator has disabled public write access.

Ambitious 13.4 Atmos.. let's DO this! 4 months 3 weeks ago #31348

  • john.reekie
  • john.reekie's Avatar
  • Offline
  • Platinum Boarder
  • Posts: 2690
  • Thank you received: 1099
  • Karma: 111
Well, I think the simple way would be to use 3 x DDRC-88A/BM.

Unit 1. Inputs, L, R, SL, SR. Outputs speaker + sub for each.
Unit 2. Inputs 7 speaker channels. Outputs 7 speakers + lowpassed BM signal for subs (I assume to LFE subs)
Unit 3. Inputs C, 1 more speaker, BM from UNit 2, LFE. Outputs C speakr, one more speaker, that leaves 4 for LFE subs and 2 for center channel subs.

You'd have some work to do manually adjusting the delays between units etc.

Not 100% sure that would work but suggest once more you draw a diagram so you can work through it for yourself... ;)
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?
The administrator has disabled public write access.
Time to create page: 0.135 seconds