Notiiced a sound issue with my Cobalt's - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 22 Old 11-19-2019, 07:26 PM - Thread Starter
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Notiiced a sound issue with my Cobalt's

I am running a DIY Soundgroup Cobalt LCR set up. I am powering them with a Denon X3300/XPA 3 combo. The center channel is amazing. Super dynamic, crystal clear, and never gets harsh sounding. When I set the Denon to Pure (which I think is just straight 2 channel), and listened to some music. When I did, the L and R sounded extremely dull and almost zero dynamics compared to the Center. During movies or anything else 5.1, the L and R are fine. AFAIK, I set them up correctly, following the directions from DIY exactly.



Is it something with my settings? I have all speakers set to small, the crossovers at 80. Could it be simply because the center is a MTM configuration with dual 8 inch woofers? Truth be told, I almost never listen to two channel music. It was just something I wanted to try out.
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post #2 of 22 Old 11-19-2019, 07:41 PM
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I'm almost positive Pure Direct bypasses Audyssey's corrections. What you are hearing is how your speakers really sound in your room (with existing placement, treatments, etc.).

In other words, your room is at fault (as are most).
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post #3 of 22 Old 11-20-2019, 03:44 AM
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You can check the simple and obvious and make sure the tweeters are working. Otherwise, it could be that Audysey is boosting the top end *a lot* as it will try to make the response flat....whereas the native in room response of speakers designed with a flat anechoic response will be gradually declining...so if Audysey is boosting the top end 5-10 dB, it will sound flat when you turn it off.
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post #4 of 22 Old 11-20-2019, 05:22 AM
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post #5 of 22 Old 11-20-2019, 05:25 AM - Thread Starter
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Originally Posted by corradizo View Post
Doesn’t pure turn off the subs?
I'm not sure. But I am sub-less right now so it's moot.
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post #6 of 22 Old 11-20-2019, 05:27 AM - Thread Starter
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Quote:
Originally Posted by bear123 View Post
You can check the simple and obvious and make sure the tweeters are working. Otherwise, it could be that Audysey is boosting the top end *a lot* as it will try to make the response flat....whereas the native in room response of speakers designed with a flat anechoic response will be gradually declining...so if Audysey is boosting the top end 5-10 dB, it will sound flat when you turn it off.
They are. Like I said, I rarely listen to 2 channel anything. Could it be too much stuffing in the boxes?
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post #7 of 22 Old 11-20-2019, 06:49 AM
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Try listening to two-channel *without* putting it in Pure mode (which disables room correction). In other words, see how the LR sound with room correction enabled.
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post #8 of 22 Old 11-20-2019, 06:52 AM
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Try swapping the center with L or R. That will demonstrate whether the speaker or the settings sound different.

Chris
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post #9 of 22 Old 11-20-2019, 10:57 AM
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Quote:
Originally Posted by jcmccorm View Post
Try listening to two-channel *without* putting it in Pure mode (which disables room correction). In other words, see how the LR sound with room correction enabled.
I'm pretty sure this is by pressing the Music button on the Denon remote until you see "Stereo" on the display.

http://manuals.denon.com/AVRX3300W/E...SYyriqsmlp.php
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post #10 of 22 Old 11-20-2019, 12:07 PM - Thread Starter
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Quote:
Originally Posted by jcmccorm View Post
Try listening to two-channel *without* putting it in Pure mode (which disables room correction). In other words, see how the LR sound with room correction enabled.
Quote:
Originally Posted by a77cj7 View Post
Try swapping the center with L or R. That will demonstrate whether the speaker or the settings sound different.

Chris
Quote:
Originally Posted by notfastenough View Post
I'm pretty sure this is by pressing the Music button on the Denon remote until you see "Stereo" on the display.

http://manuals.denon.com/AVRX3300W/E...SYyriqsmlp.php
I will try all of that. Thank you!
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post #11 of 22 Old 11-20-2019, 12:45 PM
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Quote:
Originally Posted by notfastenough View Post
I'm pretty sure this is by pressing the Music button on the Denon remote until you see "Stereo" on the display.

http://manuals.denon.com/AVRX3300W/E...SYyriqsmlp.php
Or just leave it on "Auto" and let it decode based on the source. This way, when I play music through my MythTV box it automatically goes to Stereo, watch a movie and DTS (or other) shows up, etc.

Of course, that depends on how the source is set for output...
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post #12 of 22 Old 11-20-2019, 07:25 PM - Thread Starter
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So I tried it in "stereo" mode and it was a huge difference. AKA, my room sucks. Once I get my subs built and hooked up, I will have to to some serious work with REW.
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post #13 of 22 Old 11-21-2019, 04:08 PM
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Quote:
Originally Posted by ratm View Post
So I tried it in "stereo" mode and it was a huge difference. AKA, my room sucks. Once I get my subs built and hooked up, I will have to to some serious work with REW.
So as I suspected, it sounds like Audysey is boosting the upper frequencies *a lot*. I think this is common with Audysey as it will boost the FR at MLP to make it flat, whereas most optimally designed speakers will have a gradually declining response. If you get used to an incredibly boosted Audysey top end, turning it off will sound dull in comparison.
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post #14 of 22 Old 11-22-2019, 04:14 AM - Thread Starter
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Quote:
Originally Posted by bear123 View Post
So as I suspected, it sounds like Audysey is boosting the upper frequencies *a lot*. I think this is common with Audysey as it will boost the FR at MLP to make it flat, whereas most optimally designed speakers will have a gradually declining response. If you get used to an incredibly boosted Audysey top end, turning it off will sound dull in comparison.

Makes perfect sense. Now I need to figure out where my room sucks the most and add a few treatments.
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post #15 of 22 Old 11-22-2019, 12:50 PM
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Quote:
Originally Posted by smcmillan2 View Post
I'm almost positive Pure Direct bypasses Audyssey's corrections. What you are hearing is how your speakers really sound in your room (with existing placement, treatments, etc.).

In other words, your room is at fault (as are most).
If it hasnt been answered, hes also hearing the direct source as well. Bad source +no EQ = Not great sound.

To be honest I wouldnt even mess with pure direct. Also theres another trick but you have to go into receiver settings and select 2.1. Some give the option of phantom center, some just defualt to phantom center. I run this mode in my living room since my center had to be in a cubby and sounds crazy bad and boomy.

I dont know if denon saves the audyssey calibration for each mode, like say if you flip from 7.1 to 5.1 and 2.0 on another source, or 7.1 to 2.1. I dont know how that all works, if you need to recalibrate for each setting?

- 6 BA CR6 array center channel, QSC AD-S82 L/R, 4 jbl 8330a surr , 8 jbl 12" subs w/Inuke 6000. JVC rs420, Denon x4000, Sony x800 -

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post #16 of 22 Old 11-23-2019, 04:16 AM
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https://www.avsforum.com/forum/155-d...l#post58861042

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post #17 of 22 Old 11-24-2019, 05:26 AM - Thread Starter
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This doesn't count. It's not a sub related question.
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post #18 of 22 Old 11-24-2019, 08:06 AM
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As I understand it, that thread is not limited to sub questions.

Automation: Alexa- Harmony Hub- Wemo Dimmer Switch- Wemo Smart Plug BatCave: SY Triple Black
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post #19 of 22 Old 11-24-2019, 12:46 PM - Thread Starter
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As I understand it, that thread is not limited to sub questions.
That’s debatable
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post #20 of 22 Old 11-24-2019, 02:04 PM
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Quote:
Originally Posted by ratm View Post
This doesn't count. It's not a sub related question.
The ratm thread is in the DIY Speakers and Subwoofers section. Cobalts are DIY speakers, so yeah, those questions count. Besides, if the Mods allowed you to chat about Martial Arts, I guess anything can be discussed there.

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post #21 of 22 Old 11-24-2019, 02:05 PM - Thread Starter
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Originally Posted by Augerhandle View Post
The ratm thread is in the DIY Speakers and Subwoofers section. Cobalts are DIY speakers, so yeah, those questions count.

damn
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post #22 of 22 Old 11-24-2019, 02:32 PM
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Quote:
Originally Posted by ratm View Post
I am running a DIY Soundgroup Cobalt LCR set up. I am powering them with a Denon X3300/XPA 3 combo. The center channel is amazing. Super dynamic, crystal clear, and never gets harsh sounding. When I set the Denon to Pure (which I think is just straight 2 channel), and listened to some music. When I did, the L and R sounded extremely dull and almost zero dynamics compared to the Center. During movies or anything else 5.1, the L and R are fine. AFAIK, I set them up correctly, following the directions from DIY exactly.



Is it something with my settings? I have all speakers set to small, the crossovers at 80. Could it be simply because the center is a MTM configuration with dual 8 inch woofers? Truth be told, I almost never listen to two channel music. It was just something I wanted to try out.
I answered in the ratm Q & A thread.

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