
lovinthehd
Audioholic Jedi
You could also just play with this to see just where you can detect thd? https://www.audiocheck.net/testtones_thd.php
Passive speakers shouldn't have audible noise, so THD measurement is good enough. I have never seen measurements that show a speaker that can do better than -65 dB THD under any meaningful test condition. 100 years is a long time, I guess it might be possible.I wonder @ PENG what would it take to have speakers measure with SINAD of 100db? Maybe 100 years from now they will have figured it out. What would that even sound like though? Would we even notice?
I use D&M in the same way and I guess that is quite common.D&M means D*M Holdings to me whom used to own Denon/Marantz before Sound United acquired them. I didn't even realize you were using that abbreviation to mean Denon/Marantz. LOL
Here was a cheap Yamaha AVR with THD+N of 0.02% and SNR was about 111dBA:That would be great, but I would like to know which one, so I can buy one lol..
Be sure to look for graphs (pasted from Audiosciencereview.com) like the following:
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I don't want something like this, though if it cost $200 I would be okay with it.
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Might want to check in here? https://forums.audioholics.com/forums/threads/the-new-onkyo-rz50.122659/Just fired up the first receivers test, the RZ50. My speakers are all in their places and everything looks right. I tried starting Dirac, the mic is hooked up, it played pink noise on each 5 speakers, but as soon as it got to the RSL speedwoofer, I heard it play noise for a second, and then error code: DU3 comes on. I First tried running it in 2.1, then I tried in 5.1. Same error both times. I have the power switch on my sub on, my cable is plugged into the the “LFE in” on my sub, and the Crossover dial is turned hard left so it clicks to put it into the LFE position. I have my volume knob set at 12 o’clock. The error code is not allowing me to do the calibration and I can’t figure it out
Thank you. I did get the AccuEQ room calibration to work. Until I can figure out the error code with Dirac, if I use AutoEQ for now, how well does that work? I did 6 different listening positions at 3ft height all within 20” from each otherMight want to check in here? https://forums.audioholics.com/forums/threads/the-new-onkyo-rz50.122659/
How big are your RSL speakers?Here are my results
Crossover
Front is 40hz
Center is 40hz
Surround is 50 hz
And LPF of LFE is 120 hz
Distance
Front left 12.9 ft
Center 11.9 ft
Front right 12.9 ft
Surround left 8.5 ft
Surround right 8.5 ft
Subwoofer 13.6 ft
level calibration
Front left +2.0
Center +2.0
Front right +2.0
Surround left +1.5
Surround right +3.0
Subwoofer minus -3.5
All my speakers are toed in.
What changes should I make? Change the sub to 80Hz correct??
Don't ever touch the LPF of LFE always keep that at 120hzHere are my results
Crossover
Front is 40hz
Center is 40hz
Surround is 50 hz
And LPF of LFE is 120 hz
Distance
Front left 12.9 ft
Center 11.9 ft
Front right 12.9 ft
Surround left 8.5 ft
Surround right 8.5 ft
Subwoofer 13.6 ft
level calibration
Front left +2.0
Center +2.0
Front right +2.0
Surround left +1.5
Surround right +3.0
Subwoofer minus -3.5
All my speakers are toed in.
What changes should I make? Change the sub to 80Hz correct??
AccuEQ has not gotten very good remarks that I've seen.....my Onkyo is old enough it has Audyssey so no personal experience.Thank you. I did get the AccuEQ room calibration to work. Until I can figure out the error code with Dirac, if I use AutoEQ for now, how well does that work? I did 6 different listening positions at 3ft height all within 20” from each other
Of those perhaps I'd up the crossovers to 80 as a starting point.Here are my results
Crossover
Front is 40hz
Center is 40hz
Surround is 50 hz
And LPF of LFE is 120 hz
Distance
Front left 12.9 ft
Center 11.9 ft
Front right 12.9 ft
Surround left 8.5 ft
Surround right 8.5 ft
Subwoofer 13.6 ft
level calibration
Front left +2.0
Center +2.0
Front right +2.0
Surround left +1.5
Surround right +3.0
Subwoofer minus -3.5
All my speakers are toed in.
What changes should I make? Change the sub to 80Hz correct??
The LPF of LFE is just a limit on the LFE channel content (.1 in recordings that have that channel), it's not for the sub in general. A crossover is just that between speaker/sub, and covered by the avr crossover setting for the various speakers/channels.Yes I’m using all RSL Speakers. I’m using the CG23’s for the LCR and the CG3s for the two surrounds.
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CG23M 5.1 Home Theater Speaker System - RSL Speakers
rslspeakers.com
(I have their 4 Atmos but I’m not able to test those out until I can cut holes in the ceiling)
Thanks for the feedback, I will change all of the speakers except for the sub, to 80 Hz. I will leave the sub alone at 120 Hz. I thought I read something in the manual or saw something online about setting the sub for 80 Hz to 120 Hz, but maybe I was mistaken. I’m still trying to learn as I go and this is why I ask so many questions.
At 3 Feet ? When you sit down on a chair and listen to your system, how high is your ear from the floor? If I remember I'm about 43 inches. I hope your bed speakers are at ear level.Thank you. I did get the AccuEQ room calibration to work. Until I can figure out the error code with Dirac, if I use AutoEQ for now, how well does that work? I did 6 different listening positions at 3ft height all within 20” from each other
The best speakers for THD... tend to have other constraints...Passive speakers shouldn't have audible noise, so THD measurement is good enough. I have never seen measurements that show a speaker that can do better than -65 dB THD under any meaningful test condition. 100 years is a long time, I guess it might be possible.
Keep in mind that the "distance" readout is more a translation to distance based on speed of sound (i.e. delay); acoustical properties rather than just physical distance can play a role, too. You can angle center up towards your listening position, too.I have a laser tape measure and I’ve checked everything very precisely and have very accurate measurements. I’m exactly 3 feet from ear level to floor When in my seated position. I have my front left and right tweeter at exactly 3 feet and currently at 22° From 0° line. So the left and right are 44° apart from each other. I may try 60° apart in a couple weeks. My Center speaker is as high as I can put it which is 30 inches off my floor before it hits the bottom of my TV, but I did angle it and used my laser pointer so it’s pointing at exactly 3 feet when I’m in my seated position. My surrounds are at 110° and the tweeter is at 3’9” from the ground.
Looks like you've got it sorted.I have a laser tape measure and I’ve checked everything very precisely and have very accurate measurements. I’m exactly 3 feet from ear level to floor When in my seated position. I have my front left and right tweeter at exactly 3 feet and currently at 22° From 0° line. So the left and right are 44° apart from each other. I may try 60° apart in a couple weeks. My Center speaker is as high as I can put it which is 30 inches off my floor before it hits the bottom of my TV, but I did angle it and used my laser pointer so it’s pointing at exactly 3 feet when I’m in my seated position. My surrounds are at 110° and the tweeter is at 3’9” from the ground.