Simplified REW Setup and Use (USB Mic & HDMI Connection) Including Measurement Techniques and How To Interpret Graphs - Page 639 - AVS Forum | Home Theater Discussions And Reviews
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post #19141 of 19151 Old Today, 06:16 AM
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Originally Posted by bgoering View Post
Did you try HD Audio Output 4 instead of Display?

Its all working now, it was just me being stupid!
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post #19142 of 19151 Old Today, 06:26 AM
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Originally Posted by artur9 View Post
My graph looked like that for a while - not quite as severe. It sounded terrible to me until I fixed it. The issue was too much overlap between the mains and the subwoofers.



How did you resolve the issue?

Thanks
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post #19143 of 19151 Old Today, 06:38 AM
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Originally Posted by indus1 View Post
How did you resolve the issue?

Thanks
I moved the XOver frequency higher. The subs I'm using go to 150Hz. I had the XO originally at 90 but that give a hump at the XO. Moving it higher let the natural rolloff of the sub work better with the mains, which are bookshelves. I think if I had DSP available other options are possible but my minidsp was unusable and got binned.
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post #19144 of 19151 Old Today, 07:12 AM
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Its all working now, it was just me being stupid!
Really? That's never happened around here before.

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Did you really need to quote that entire post in your reply?
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post #19145 of 19151 Old Today, 07:16 AM
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Originally Posted by indus1 View Post
Hi

I should definitely be C and SW, and as I'm sure you know that the SW only channel had a +10db gain applied.
the overall level of a measurement sent to the LFE channel will be 10dB higher than a measurement sent to the C channel
a bass managed C channel measurement will not see a 10dB level difference between the sub passband and the C channel passband (unless your configuration is borked )

i.e. the LFE channel being 10dB higher does not explain the marked difference in shape between the SW alone and a bass managed C channel
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post #19146 of 19151 Old Today, 10:30 AM
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Originally Posted by 3ll3d00d View Post
the overall level of a measurement sent to the LFE channel will be 10dB higher than a measurement sent to the C channel
a bass managed C channel measurement will not see a 10dB level difference between the sub passband and the C channel passband (unless your configuration is borked )

i.e. the LFE channel being 10dB higher does not explain the marked difference in shape between the SW alone and a bass managed C channel

Ok thanks.

I've attached two pics. These are channel 3 and channel 4 with the positions you mentioned ie MLP, 0.5m either side and then about 0.5m in front. Please ignore the lowest measurement line in the second picture

Does this shed any further light?

Thanks again for your help and patience.
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post #19147 of 19151 Old Today, 11:13 AM
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Originally Posted by indus1 View Post
Ok thanks.

I've attached two pics. These are channel 3 and channel 4 with the positions you mentioned ie MLP, 0.5m either side and then about 0.5m in front. Please ignore the lowest measurement line in the second picture

Does this shed any further light?

Thanks again for your help and patience.
Just curious, how do you expect us to interpret your graphs if you don't enter a description of which curve is which? You include the legend in the screen print, but all that it shows is a date of the measurement. And the last waterfall you posted indicates that you completely ignored the advice I gave in post 19098 WRT how to set the waterfall lower limit. And I suggested you post the REW MDAT so we could look at the actual measurements, which you ignored as well.

We are trying to help out here, but you don't seem to be following the advice you get. And the bass response still doesn't look very good, IMO.
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post #19148 of 19151 Old Today, 11:29 AM
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As jerry says, informed commentary is V hard without details of which measurement is which. The only thing we can see is your measurement signal chain has a problem with bass managed SW levels, the sub looks pretty clearly 10dB low.

What is your measurement signal chain exactly? ie what do you connect to? How are those devices configured? What crossover are you using?
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Last edited by 3ll3d00d; Today at 12:03 PM.
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post #19149 of 19151 Old Today, 11:57 AM
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And you also didn't include the CC only graph I requested.
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post #19150 of 19151 Old Today, 12:04 PM
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Originally Posted by AustinJerry View Post
Just curious, how do you expect us to interpret your graphs if you don't enter a description of which curve is which? You include the legend in the screen print, but all that it shows is a date of the measurement. And the last waterfall you posted indicates that you completely ignored the advice I gave in post 19098 WRT how to set the waterfall lower limit. And I suggested you post the REW MDAT so we could look at the actual measurements, which you ignored as well.

We are trying to help out here, but you don't seem to be following the advice you get. And the bass response still doesn't look very good, IMO.


Noted with thanks.

1) I'll get the graphs properly sorted.

2) I didn't ignore your advice on setting the WF lower limit. I thought I had done it but must have misunderstood what you said.

3) I don't know how to share the mdat data but will figure it out.

Thanks for your input
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post #19151 of 19151 Old Today, 12:06 PM
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Originally Posted by 3ll3d00d View Post
As jerry says, informed commentary is V hard without details of which measurement is which. The only thing we can see is your measurement signal chain has a problem with bass managed SW levels, the sub looks pretty clearly 10dB low.

What is your measurement signal chain exactly? ie what do you connect to? How are those devices configured? What crossover are you using?


Hi

I need to pop out but will respond once I'm back.

Thanks
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