The "Official" xtz Room Analyzer Thread - Page 19 - AVS Forum | Home Theater Discussions And Reviews
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post #541 of 551 Old 03-14-2016, 11:46 AM
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Quote:
Originally Posted by Kal Rubinson View Post
Yes, 3 positions.
Yes but why not just use Audyssey?
Use XTZ as the reality check.
My plan is to use Audyssey and then measure with XTZ Analyzer to flatten the response as much as possible. I am having hard time understanding & using XTZ Analyzer, I mean getting started with it
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post #542 of 551 Old 03-14-2016, 03:30 PM
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Quote:
Originally Posted by av_life View Post
My plan is to use Audyssey and then measure with XTZ Analyzer to flatten the response as much as possible. I am having hard time understanding & using XTZ Analyzer, I mean getting started with it
??? How will you "flatten the response as much as possible?" What will you use to make changes?

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post #543 of 551 Old 03-14-2016, 05:23 PM
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Hi what is your crossover to the sub?

Another option is to use the RTA in XTZ room analyser to find the best position separately e.g. left speaker, right speaker and sub.
Once found the best speaker position, then take measurements of speakers as you have already and post.
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post #544 of 551 Old 03-15-2016, 08:00 PM
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Hello fellow members, please bear with me as I understand using XTZ and tune my HT. This might be long post (sorry, since I am new member, I can't post with in-line images & links):

Took few measurements this evening. Connected XTZ output to AUX1 on the AVR.

Step 1: Disconnected all speakers except FRONT LEFT channel (should have chosen Center, made a mistake!). Measured using Room Analyzer:
Refer to the attached 'Step1_FL_only' image

Step 2: Connected XTZ to SUB input directly and measured it
(SUB curve is blue line):
Refer to the attached 'Step2_SUB' image

Step 3: Connected XTZ to AVR again and disconnected all speakers except FRONT LEFT & SUB (put the AVR in Dolby Cinema mode):
(LEFT FRONT + SUB combined curve is blue line now):
Refer to the attached 'Step3_FL_SUB_Together' image

Step 4: Similar to STEP 1 & then STEP 2 but used FULL RANGE measurements.
Trying to follow Speaker & Sub Distances
From Nyal's article "Home Theater Calibration 101: Speaker Levels, Distances and Subwoofer Phase"
Here is the output (blue line is the SUB):
Refer to the attached 'Step4_FL_SUB_Overlayed' image

Questions:
a) Does my approach even make sense?
b) Nyal's Home Theater Calibration link I mentioned in step4 states to measure and set the speaker level to 75dB. When I try to do this step, should I keep the AVR's volume at 75dB first and then get into channel level screen (just want to ensure). Also, 'Align Delay' and 'Auto Align' are not highlighted for me.
c) What does the above graphs tell me? Please let me know how to decode them? Refer me to other articles that might help me. I am kind of clueless here!!
d) Next steps?
Appreciate your thoughts & suggestions.
Attached Thumbnails
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post #545 of 551 Old 03-16-2016, 09:35 AM - Thread Starter
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Originally Posted by av_life View Post
Hello, I recently purchased XTZ Room Analyzer Pro to measure my media room acoustics. I read the manual and its confusing. This is what I tried:
I am using Marantz 7702 mk II processor:
Measure 1:
Connected XTZ to AUX1 and put it in STEREO mode - SW in 0 degrees phase (FL, FR & SW are only active according to Marantz Info screen). Using Room Analyzer, measured the room (1 measurement only). Output is attached as "Room Analyzer - Sub 0.bmp"




Measure 2:
Everything same except that I changed SW to 180 degrees phase. Output is attached ad "Room Analyzer - Sub 180.bmp"



Questions:
1. From the attached graphs, I really don't know what I am looking at: Are there any tutorials on XTZ Analyzer Pro?
2. I understand the goal here is to get the curve as flat as possible. How can I accomplish this?
3. After the measurement, it says "No room modes found".

I have gone thru several posts in this thread, I would appreciate if any one can share getting started post (if any) or any other links that would help me started with XTZ Analyzer.

Thanks!
We would like to help you but you haven't given us nearly enough info to allow us to do so. Please answer a few questions:

What speakers do you have?
What subwoofer(s) do you have?
How many subs do you have?
Where are your sub(s) placed in your room?
What speaker size settings are you using?
What crossover?
How have you calibrated the system?

How big is your room? Dimensions?
How far are the speakers from the boundary walls?
What is the "Distance" setting for each speaker and subwoofer?
What is the ACTUAL distance to the primary listening position?
How many "important" listening positions do you have?

Lombardi said it:
Perfection is not attainable, but if we chase perfection we can catch excellence."

My System

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post #546 of 551 Old 03-16-2016, 10:50 AM
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Originally Posted by craig john View Post
We would like to help you but you haven't given us nearly enough info to allow us to do so. Please answer a few questions:

What speakers do you have?
What subwoofer(s) do you have?
How many subs do you have?
Where are your sub(s) placed in your room?
What speaker size settings are you using?
What crossover?
How have you calibrated the system?

How big is your room? Dimensions?
How far are the speakers from the boundary walls?
What is the "Distance" setting for each speaker and subwoofer?
What is the ACTUAL distance to the primary listening position?
How many "important" listening positions do you have?

Setup: 7.1
Pre-amp: Marantz 7702 mkII
Amps: Marantz MM8077
Speakers: ML Ethos for fronts, MotifX center, FX2 surrounds
Subwoofer: BalancedForce 210 - one only. Currently placed in front of the room
Speaker settings: After going thru Audyssey setup, the pre-amp identified the fronts as large and everything else as small
Crossover: 80Hz for all speakers
Room size: 14' wide x 20' length x 10' height
The front the speakers are 1' away in front of the wall and at-least 18" away from side wall
The center is wall mounted below the screen
Distance setting (pre-amp measured by Audyssey): FL: 15.5, FR: 15.6, Center: 16.9, Subwoofer: 2.8ft!!!!!
ACTUAL distance: The fronts are at 17ft, the center is 18ft and subwoofer is 17ft
"important" listening positions: I am planning to put one row seating for now and so I would like to concentrate for Main Listening Position for the time being.

Thanks!

Last edited by av_life; 03-18-2016 at 08:48 AM.
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post #547 of 551 Old 03-16-2016, 08:59 PM - Thread Starter
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I've tried to reply twice and I get this:

"Your submission could not be processed because the token has expired.

Please push the back button and reload the previous window."



I don't know what this means, but I'll respond when it gets corrected.

Craig

Lombardi said it:
Perfection is not attainable, but if we chase perfection we can catch excellence."

My System

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post #548 of 551 Old 03-21-2016, 05:35 AM
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Originally Posted by craig john View Post
I've tried to reply twice and I get this:

"Your submission could not be processed because the token has expired.

Please push the back button and reload the previous window."



I don't know what this means, but I'll respond when it gets corrected.

Craig
Craig, still having issues? Can you try again please?
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post #549 of 551 Old 03-25-2016, 06:12 PM - Thread Starter
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Let's try this again...

1. Set XTZ to 12 ppo. This will give higher resolution measurements.
2. Turn up the MVC by about 10 dB from where it was for your previous measurements.
3. Turn OFF Audyssey.
3. Set all speakers to Small, the crossovers to 200 Hz and all Distances to 0. Turn off the amps for the speakers
4. Using a mic stand, place the mic at the Primary Listening Position. Take a measurement of the sub independent of the speakers. Then move it to every possible location in your room and measure it. Find the spot with the fewest nulls. (Peaks can be corrected with EQ; nulls cannot, so look for the spot with the fewest nulls.) Once you find it, leave it there and measure the response at any other listening positions that are important in your theater. Post these measurements.

The above will tell us the baseline response of the sub. Once we've optimized the sub, we can then look at the speakers.

Craig

Lombardi said it:
Perfection is not attainable, but if we chase perfection we can catch excellence."

My System


Last edited by craig john; 03-25-2016 at 06:17 PM.
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post #550 of 551 Old 05-13-2016, 02:52 PM
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Can anyone chime in on the difference between the original room analyzer and room analyzer 2?

Selling in AVS classifieds
Emotiva basx a-500 5 channel amp - $399
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post #551 of 551 Old 05-13-2016, 05:17 PM
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Quote:
Originally Posted by madhuski View Post
Can anyone chime in on the difference between the original room analyzer and room analyzer 2?
http://www.stereophile.com/content/m...s5kRpLVUF4w.97
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