MiniDSP & Delay - AVS Forum
Forum Jump: 
 4Likes
Reply
 
Thread Tools
post #1 of 38 Old 08-17-2014, 09:31 PM - Thread Starter
AVS Special Member
 
Alan P's Avatar
 
Join Date: Jan 2003
Location: Rapid City, South Dakota
Posts: 2,891
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 793 Post(s)
Liked: 426
MiniDSP & Delay

Is there a mathematical formula for figuring what my delays should be?

I have 4 subs, 2 towards the front of the room and 2 towards the rear. The rear subs are not equidistant to the MLP (the front pretty much are) so I would like some sort of formula to figure out what my delay on the rears should be.

I'm guessing it goes something like this: front subs are 17' away, rear sub #1 is 6 feet away - rear sub #1 needs the equivalent of 11' extra delay - is that anywhere near correct??

Also, is there a way to get the MiniDSP Advanced 2-way plug-in to do more than 7.5ms delay?
Alan P is online now  
Sponsored Links
Advertisement
 
post #2 of 38 Old 08-17-2014, 10:01 PM
AVS Special Member
 
basshead81's Avatar
 
Join Date: Mar 2013
Location: Fort Wayne, IN
Posts: 6,434
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 35 Post(s)
Liked: 1702
Not sure of there is a formula but I would probably start by making slight adjustments and measuring each change to see how it effects the response.
basshead81 is offline  
post #3 of 38 Old 08-18-2014, 02:49 AM
Advanced Member
 
charmerci's Avatar
 
Join Date: Apr 2012
Posts: 673
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 75 Post(s)
Liked: 96
I'm not sure but I think that's what the adjustable polarity knobs are on the subs are there for.
charmerci is offline  
post #4 of 38 Old 08-18-2014, 06:30 AM
Advanced Member
 
3ll3d00d's Avatar
 
Join Date: Sep 2007
Location: London, UK
Posts: 643
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 292 Post(s)
Liked: 87
distance in metres / speed of sound in air in metres per second = delay required in seconds

11' is 3.35m & speed of sound in air is 343m/s so that gives you 9.78ms

Having said that, what you really want to achieve is optimal phase alignment which, given the impact of the room, may not be exactly the same as the precise distances. To see this, you can use REW with an analogue mic & loopback & then learn how to manipulate the signal to line up the phase responses (example on another forum here but see assorted threads on HTS for lots of worked examples). If you do this then you can save yourself a lot of time measuring as you can also use REW trace arithmetic to do the calcs on paper & measurements for confirmation.
Mfusick and andyc56 like this.
3ll3d00d is online now  
post #5 of 38 Old 08-18-2014, 07:31 AM
Senior Member
 
ahmedreda's Avatar
 
Join Date: Nov 2008
Posts: 498
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 46 Post(s)
Liked: 44
Roughly 1ms per foot. Exactly it is 0.88888888 ms per foot. You should introduce the delay to the port going to the sub that is closer.

Last edited by ahmedreda; 08-18-2014 at 12:17 PM.
ahmedreda is offline  
post #6 of 38 Old 08-18-2014, 08:59 AM - Thread Starter
AVS Special Member
 
Alan P's Avatar
 
Join Date: Jan 2003
Location: Rapid City, South Dakota
Posts: 2,891
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 793 Post(s)
Liked: 426
Quote:
Originally Posted by 3ll3d00d View Post
distance in metres / speed of sound in air in metres per second = delay required in seconds

11' is 3.35m & speed of sound in air is 343m/s so that gives you 9.78ms

Having said that, what you really want to achieve is optimal phase alignment which, given the impact of the room, may not be exactly the same as the precise distances. To see this, you can use REW with an analogue mic & loopback & then learn how to manipulate the signal to line up the phase responses (example on another forum here but see assorted threads on HTS for lots of worked examples). If you do this then you can save yourself a lot of time measuring as you can also use REW trace arithmetic to do the calcs on paper & measurements for confirmation.
Thanks d00d, this seems to be the definitive answer....although those links kinda make my brain hurt.

I'll read 'em a few more times and then try to put it to use. One question though....is there any way to do the loopback when using REW with HDMI?
Alan P is online now  
post #7 of 38 Old 08-18-2014, 09:05 AM - Thread Starter
AVS Special Member
 
Alan P's Avatar
 
Join Date: Jan 2003
Location: Rapid City, South Dakota
Posts: 2,891
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 793 Post(s)
Liked: 426
Quote:
Originally Posted by basshead81 View Post
Not sure of there is a formula but I would probably start by making slight adjustments and measuring each change to see how it effects the response.
That's exactly what I did bh, but I hit the limit (7.5ms) while the response was still improving, hence my question on how to get more delay out of the plug-in.
Alan P is online now  
post #8 of 38 Old 08-18-2014, 09:19 AM
Advanced Member
 
3ll3d00d's Avatar
 
Join Date: Sep 2007
Location: London, UK
Posts: 643
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 292 Post(s)
Liked: 87
Quote:
Originally Posted by Alan P View Post
Thanks d00d, this seems to be the definitive answer....although those links kinda make my brain hurt.

I'll read 'em a few more times and then try to put it to use. One question though....is there any way to do the loopback when using REW with HDMI?
Afraid not, you could use holmimpulse instead though. It has a time lock feature for this purpose and similar trace arithmetic functionality.
3ll3d00d is online now  
post #9 of 38 Old 08-18-2014, 09:50 AM - Thread Starter
AVS Special Member
 
Alan P's Avatar
 
Join Date: Jan 2003
Location: Rapid City, South Dakota
Posts: 2,891
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 793 Post(s)
Liked: 426
Quote:
Originally Posted by 3ll3d00d View Post
Afraid not, you could use holmimpulse instead though. It has a time lock feature for this purpose and similar trace arithmetic functionality.
Hmmm...looks like a great option, thanks!
Alan P is online now  
post #10 of 38 Old 08-18-2014, 09:51 AM
AVS Special Member
 
basshead81's Avatar
 
Join Date: Mar 2013
Location: Fort Wayne, IN
Posts: 6,434
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 35 Post(s)
Liked: 1702
Quote:
Originally Posted by charmerci View Post
I'm not sure but I think that's what the adjustable polarity knobs are on the subs are there for.
No that is not the same thing. Phase control only aligns around the crossover. Distance delay can align the entire FR.
basshead81 is offline  
post #11 of 38 Old 08-18-2014, 11:42 AM
Advanced Member
 
3ll3d00d's Avatar
 
Join Date: Sep 2007
Location: London, UK
Posts: 643
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 292 Post(s)
Liked: 87
If 7.5ms is a hard limit then....

You could try aligning them to be 360 degrees out of phase (ie in phase but a whole cycle out). Timing (snap, transients etc) would be off but at least frequency response should be OK.

You might also try inverting polarity on one set of and then aligning to be 180 degrees out. This might be easier to dial in without phase views as you would delay for the worst possible response and then flip the polarity.
3ll3d00d is online now  
post #12 of 38 Old 08-18-2014, 12:46 PM - Thread Starter
AVS Special Member
 
Alan P's Avatar
 
Join Date: Jan 2003
Location: Rapid City, South Dakota
Posts: 2,891
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 793 Post(s)
Liked: 426
OK, maybe I don't need as much delay as I originally thought.....

Back to my OP; if all 4 subs are EQ'ed/delayed (sub distance setting) by Audyssey collectively at 18', but the rear subs are only 4-5 feet from the MLP, I just need to add delay to the rear subs equal to their actual physical distance....is this correct?

If that is the case, I would only need to add:

Sub #3 - 4' from MLP
4x12=48"
48/13.5=3.555ms

Would this be correct???

I still plan to measure the actual delay needed with the tools referenced above by d00d, but just wanted to know if I've got a good grasp of the theory.
Alan P is online now  
post #13 of 38 Old 08-18-2014, 12:49 PM - Thread Starter
AVS Special Member
 
Alan P's Avatar
 
Join Date: Jan 2003
Location: Rapid City, South Dakota
Posts: 2,891
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 793 Post(s)
Liked: 426
Quote:
Originally Posted by 3ll3d00d View Post
If 7.5ms is a hard limit then....

You could try aligning them to be 360 degrees out of phase (ie in phase but a whole cycle out). Timing (snap, transients etc) would be off but at least frequency response should be OK.

You might also try inverting polarity on one set of and then aligning to be 180 degrees out. This might be easier to dial in without phase views as you would delay for the worst possible response and then flip the polarity.
How do I align them to be 360 degrees out of phase?? My knobs only go to 180.
Alan P is online now  
post #14 of 38 Old 08-18-2014, 01:55 PM
AVS Special Member
 
basshead81's Avatar
 
Join Date: Mar 2013
Location: Fort Wayne, IN
Posts: 6,434
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 35 Post(s)
Liked: 1702
Quote:
Originally Posted by Alan P View Post
How do I align them to be 360 degrees out of phase?? My knobs only go to 180.
I believe he meant to say 180 out of phase...360 puts you back where you started.
basshead81 is offline  
post #15 of 38 Old 08-18-2014, 04:17 PM
Senior Member
 
ahmedreda's Avatar
 
Join Date: Nov 2008
Posts: 498
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 46 Post(s)
Liked: 44
IMO, you should delay them by the distance difference between the front subs and the rear subs.
If you have the front subs at say 10 feet and your rear subs at 4 feet, you should introduce a 6 feet delay to the rear subs. That would be 6 * .89 ~= 5ms.
The 18' foot is irrelevant as it is based on the circuitry processing delay as well as the physical delay.



Quote:
Originally Posted by Alan P View Post
OK, maybe I don't need as much delay as I originally thought.....

Back to my OP; if all 4 subs are EQ'ed/delayed (sub distance setting) by Audyssey collectively at 18', but the rear subs are only 4-5 feet from the MLP, I just need to add delay to the rear subs equal to their actual physical distance....is this correct?

If that is the case, I would only need to add:

Sub #3 - 4' from MLP
4x12=48"
48/13.5=3.555ms

Would this be correct???

I still plan to measure the actual delay needed with the tools referenced above by d00d, but just wanted to know if I've got a good grasp of the theory.
ahmedreda is offline  
post #16 of 38 Old 08-18-2014, 04:33 PM
Advanced Member
 
3ll3d00d's Avatar
 
Join Date: Sep 2007
Location: London, UK
Posts: 643
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 292 Post(s)
Liked: 87
Quote:
Originally Posted by Alan P View Post
How do I align them to be 360 degrees out of phase?? My knobs only go to 180.
Quote:
Originally Posted by basshead81 View Post
I believe he meant to say 180 out of phase...360 puts you back where you started.
I did mean 360 however I was thinking of something else entirely (so ignore that bit!).

Anyway I think your original post was correct, you want to delay the nearby subs to meet the further away subs and that present that as a mono signal to audyssey. If that means more delay than the minidsp can add then you either need to use a different device (or chain 2 minidsp's together?). However the room effect will dominate anyway so it's possible that a precise time alignment is not the best response, I know I've seen that in my own room when I have had multiple subs in there (in my case, ~2ms difference was best).
3ll3d00d is online now  
post #17 of 38 Old 08-18-2014, 04:38 PM - Thread Starter
AVS Special Member
 
Alan P's Avatar
 
Join Date: Jan 2003
Location: Rapid City, South Dakota
Posts: 2,891
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 793 Post(s)
Liked: 426
Quote:
Originally Posted by ahmedreda View Post
IMO, you should delay them by the distance difference between the front subs and the rear subs.
If you have the front subs at say 10 feet and your rear subs at 4 feet, you should introduce a 6 feet delay to the rear subs. That would be 6 * .89 ~= 5ms.
The 18' foot is irrelevant as it is based on the circuitry processing delay as well as the physical delay.
I figured that my figuring was wrong. Thanks ahmedreda.

So, with that formula; my front subs are ~17 from the MLP, my rear subs are ~4' & 6' from the MLP respectively.

Rear sub #1
17-4=13'
13x12=156"
156/13.5=11.5ms

Rear sub #2
17-6=11'
11x12=132"
132/13.5=9.8ms

Both settings are over the upper 7.5ms limit on the MiniDSP. Looks like I'm going to have to try the phase trick that d00d mentioned above if I want to get them properly time aligned.

That, or I could just stack both rear subs directly behind my chair.
Alan P is online now  
post #18 of 38 Old 08-18-2014, 05:14 PM
Advanced Member
 
3ll3d00d's Avatar
 
Join Date: Sep 2007
Location: London, UK
Posts: 643
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 292 Post(s)
Liked: 87
Quote:
Originally Posted by Alan P View Post

Both settings are over the upper 7.5ms limit on the MiniDSP. Looks like I'm going to have to try the phase trick that d00d mentioned above if I want to get them properly time aligned.
Just to be clear, i would ignore that suggestion (I was thinking of aligning sub to mains which means aligning through a small frequency range so it can be possible to use delay as a rough proxy).
3ll3d00d is online now  
post #19 of 38 Old 08-18-2014, 05:53 PM - Thread Starter
AVS Special Member
 
Alan P's Avatar
 
Join Date: Jan 2003
Location: Rapid City, South Dakota
Posts: 2,891
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 793 Post(s)
Liked: 426
Quote:
Originally Posted by 3ll3d00d View Post
Just to be clear, i would ignore that suggestion (I was thinking of aligning sub to mains which means aligning through a small frequency range so it can be possible to use delay as a rough proxy).
Hmm....so I need to find another way to add more delay then?
Alan P is online now  
post #20 of 38 Old 08-19-2014, 03:12 AM
Advanced Member
 
3ll3d00d's Avatar
 
Join Date: Sep 2007
Location: London, UK
Posts: 643
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 292 Post(s)
Liked: 87
Quote:
Originally Posted by Alan P View Post
Hmm....so I need to find another way to add more delay then?
quite possibly yes though personally I would get the measurements sorted first and then see what is required. Remember that if you get accurate timing data in your measurements that you can then shift the impulse by as many millis as you want and/or invert polarity & then use trace arithmetic to add them together to see what the result will be. Once you work out the ideal alignment on paper then you will know how much delay you really need & then you can decide what the most cost effective way to get there is.
3ll3d00d is online now  
post #21 of 38 Old 08-19-2014, 08:19 AM - Thread Starter
AVS Special Member
 
Alan P's Avatar
 
Join Date: Jan 2003
Location: Rapid City, South Dakota
Posts: 2,891
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 793 Post(s)
Liked: 426
The point (for me at least) may be moot. I did some measurements last night and may be putting all 4 of my subs in the back of the room....essentially solving my problem with delay.

See this post.
Alan P is online now  
post #22 of 38 Old 10-03-2014, 03:13 PM - Thread Starter
AVS Special Member
 
Alan P's Avatar
 
Join Date: Jan 2003
Location: Rapid City, South Dakota
Posts: 2,891
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 793 Post(s)
Liked: 426
The three posts below were cut from the REW thread in order to keep it on topic. Thanks for any advice you can offer!

>>>>>>>>>>>>>>>>>>>>>>>>>


Quote:
Originally Posted by Alan P View Post
OK guys, what would you do?

I've been messing with sub placement for what seem like forever. See this thread if you want to know the details.

Anyways, I've basically narrowed it down to 2 different configurations:

- 2 up front / 2 in back
- all 4 up front / 2 stacks of 2

This is with 4 XS15s (original, non-SE).

Here's the measurements:



Here's the waterfall comparison:





Green is front/back, red is stacked up front. As you can see, I'm getting much better extension with all 4 up front (+20db at 10hz!), but I have a huge suck-out from 55-67hz. I prefer the sound with all 4 up front, but seat-to-seat variance suffers...heck, if I just lean forward in my chair the response changes significantly. That being said, I rarely move around when watching a movie or doing critical music listening...and my wife couldn't care less. It could just be in my head, but I swear I miss that narrow band where the null is....it is pretty narrow though...prolly in my head.

Oh, and when I have all 4 up front, I only have to run the subs 4db hot. When they are in the rear I bump them up 7db.

I want to get a couple more subs to put in the back of the room fill in that null and smooth across seats, but until funds become available....which set up would you want to live with?? Do you think upgrading all 4 to SE would be worthwhile or no?
OK guys,

Did some more tweaking last night on the "2 up front/2 in back" configuration. Stuck the MiniDSP back in the chain and played with the delay. My front subs are 17' away, each rear sub is 7.5' from the MLP. I ended up with 15ms delay on the rear subs. I just did sweeps and changed the delay by 1ms at a time until I got the flattest response. Can someone take a look at my MDAT file and tell me if I'm doing something wrong? The impulse graphs look very different, but I have no idea what I'm looking for there.

https://www.dropbox.com/s/afh01iofpc...pare.mdat?dl=0

All the graphs look great! I've got the flat response and ULF extension that I was getting with the "4 stacked up front" config, but no huge dip at 60hz.

Here's a before/after comparison:



Looks good, eh? WHY DOES IT NOT SOUND GOOD?!

Doesn't sound near as good as the "4 stacked up front" did....if I move about 4' in front of my MLP, it sounds great.

Thinking tonight I'm gonna try reversing phase on the rear subs (green trace in quoted post above) and mess with the delay to see if it improves. Any other suggestions?

AVR: DENON 2113ci
FL/R: Klipschorn
CC: Klipsch RC64ii
SUR: Polk LS F/X x 4
SUB: PSA XS15 x 4 (Soon to be replaced with dual T-18s!)
DISP: Mitsubishi WD-73740
Alan P is online now  
post #23 of 38 Old 10-03-2014, 03:14 PM - Thread Starter
AVS Special Member
 
Alan P's Avatar
 
Join Date: Jan 2003
Location: Rapid City, South Dakota
Posts: 2,891
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 793 Post(s)
Liked: 426
Question about setting delay & Audyssey:

The way I did it is:

- Zero out MiniDSP
- Run Audyssey to get a sub distance setting (all 4 subs on) (distance set was 20.1')
- Turn Audyssey off
- Run sweeps and adjust delay for rear subs in MiniDSP until flattest response (15ms)
- Re-run Audyssey and leave it on
- Perform sub distance tweak (ended up at 24')

The results are the graphs you guys are seeing. Should I be doing this another way?

I was thinking that maybe I should initially run Audyssey with only the front subs on (to get the initial distance), then Audyssey wouldn't be setting the distance for all 4 subs combined. Using the distance setting for the front subs only and then setting delay for the rear subs makes more sense in my head....make any sense to you?

AVR: DENON 2113ci
FL/R: Klipschorn
CC: Klipsch RC64ii
SUR: Polk LS F/X x 4
SUB: PSA XS15 x 4 (Soon to be replaced with dual T-18s!)
DISP: Mitsubishi WD-73740
Alan P is online now  
post #24 of 38 Old 10-03-2014, 03:14 PM - Thread Starter
AVS Special Member
 
Alan P's Avatar
 
Join Date: Jan 2003
Location: Rapid City, South Dakota
Posts: 2,891
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 793 Post(s)
Liked: 426
Quote:
Originally Posted by RayDunzl View Post
Let's see the two Impulse Responses.

From REW:
All 4 up front stacked:



2 up front, 2 in back, 15ms delay to rear subs:


AVR: DENON 2113ci
FL/R: Klipschorn
CC: Klipsch RC64ii
SUR: Polk LS F/X x 4
SUB: PSA XS15 x 4 (Soon to be replaced with dual T-18s!)
DISP: Mitsubishi WD-73740
Alan P is online now  
post #25 of 38 Old 10-03-2014, 03:57 PM - Thread Starter
AVS Special Member
 
Alan P's Avatar
 
Join Date: Jan 2003
Location: Rapid City, South Dakota
Posts: 2,891
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 793 Post(s)
Liked: 426
So, just had a thought.....

I could use Audyssey to detect the aurally calculated distance of each separate sub, then use those distances to set delays with the MiniDSP. Would this be preferable over the actual measured distance or not?

AVR: DENON 2113ci
FL/R: Klipschorn
CC: Klipsch RC64ii
SUR: Polk LS F/X x 4
SUB: PSA XS15 x 4 (Soon to be replaced with dual T-18s!)
DISP: Mitsubishi WD-73740
Alan P is online now  
post #26 of 38 Old 10-03-2014, 04:02 PM
Advanced Member
 
3ll3d00d's Avatar
 
Join Date: Sep 2007
Location: London, UK
Posts: 643
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 292 Post(s)
Liked: 87
Quote:
Originally Posted by Alan P View Post
So, just had a thought.....

I could use Audyssey to detect the aurally calculated distance of each separate sub, then use those distances to set delays with the MiniDSP. Would this be preferable over the actual measured distance or not?
audyssey just looks for the impulse peak

your method (of looking at SPL support) is fine IMV, phase alignment is what you want as opposed to strict impulse alignment
3ll3d00d is online now  
post #27 of 38 Old 10-03-2014, 04:10 PM - Thread Starter
AVS Special Member
 
Alan P's Avatar
 
Join Date: Jan 2003
Location: Rapid City, South Dakota
Posts: 2,891
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 793 Post(s)
Liked: 426
OK, thanks dood.

Another question: should I set delays (by sweeping and looking at the FR) before or after Audyssey? If post-Audyssey, with it engaged or no?

AVR: DENON 2113ci
FL/R: Klipschorn
CC: Klipsch RC64ii
SUR: Polk LS F/X x 4
SUB: PSA XS15 x 4 (Soon to be replaced with dual T-18s!)
DISP: Mitsubishi WD-73740
Alan P is online now  
post #28 of 38 Old 10-03-2014, 04:24 PM
Advanced Member
 
3ll3d00d's Avatar
 
Join Date: Sep 2007
Location: London, UK
Posts: 643
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 292 Post(s)
Liked: 87
Quote:
Originally Posted by Alan P View Post
OK, thanks dood.

Another question: should I set delays (by sweeping and looking at the FR) before or after Audyssey? If post-Audyssey, with it engaged or no?
before, you want to get the subs integrated and then present that single mono signal to audyssey

fwiw I would also EQ the sub with the minidsp leaving audyssey with just fine tuning to do, i.e. take out the few big peaks (if any) below the XO using the minidsp. This gives audyssey less work to do and hence it can concentrate its processing power on the final tuning.
3ll3d00d is online now  
post #29 of 38 Old 10-03-2014, 04:44 PM - Thread Starter
AVS Special Member
 
Alan P's Avatar
 
Join Date: Jan 2003
Location: Rapid City, South Dakota
Posts: 2,891
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 793 Post(s)
Liked: 426
Thanks again! A lot to do this weekend.

AVR: DENON 2113ci
FL/R: Klipschorn
CC: Klipsch RC64ii
SUR: Polk LS F/X x 4
SUB: PSA XS15 x 4 (Soon to be replaced with dual T-18s!)
DISP: Mitsubishi WD-73740
Alan P is online now  
post #30 of 38 Old 10-03-2014, 05:33 PM
AVS Special Member
 
bass addict's Avatar
 
Join Date: Dec 2003
Location: A padded room
Posts: 4,157
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 224 Post(s)
Liked: 327
Quote:
Originally Posted by 3ll3d00d View Post
before, you want to get the subs integrated and then present that single mono signal to audyssey

fwiw I would also EQ the sub with the minidsp leaving audyssey with just fine tuning to do, i.e. take out the few big peaks (if any) below the XO using the minidsp. This gives audyssey less work to do and hence it can concentrate its processing power on the final tuning.
I'd agree. I've always had the best success with doing all the heavy lifting with the sub EQ and then running Audyssey/MCACC/YPAO to tighten things up.

Achievement Unlocked

Psychotic Episode Averted

bass addict is offline  
Reply Subwoofers, Bass, and Transducers

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off