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Go Back   Blu-ray Forum > Audio > Subwoofers


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Old 03-17-2016, 10:47 PM   #21
Auditor55 Auditor55 is offline
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Quote:
Originally Posted by RockyIII View Post
I did auto calibration without SPL Meter, and I got a final number of +4.5 dB's...What does that really mean? (Subs were set at 45% gain for calibration)
What happen if you turn the gain down to 30 percent?
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Old 03-17-2016, 11:42 PM   #22
evoll evoll is online now
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When I ordered my svs sub they said to get my avr sub readings to 0 or below (mine is -4) and then set sub knob between 1-3 O'clock. If you use the rca cable splitter on the back of the sub it will give more signal to the sub also. Mine sounds great with these settings and rec. them to anyone.
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Old 03-18-2016, 12:36 AM   #23
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I used to let my avr handle the sub, but I tried letting my powered sub do it on it's own, and it sounds night and day better. The response and low end are handled much better by the sub as opposed to the avr.
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Old 03-18-2016, 08:50 PM   #24
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Quote:
Originally Posted by RockyIII View Post
I did auto calibration without SPL Meter, and I got a final number of +4.5 dB's...What does that really mean? (Subs were set at 45% gain for calibration)
Gain on sub is set too low so AVR adds dBs to arrive at reference level. In your case +4.5. If gains are too high AVR will adjust to the negative range.
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Old 03-19-2016, 02:39 PM   #25
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Quote:
Originally Posted by hometheatergeek View Post
Gain on sub is set too low so AVR adds dBs to arrive at reference level. In your case +4.5. If gains are too high AVR will adjust to the negative range.
Re-ran calibration with gains set at 50% on all 3 subs and now I got -4dB as a final result.
Also, once we calibrate should we mess around with the gain controls again or from that point on we just adjust subwoofers from the AVR? For instance in my case should I leave sub gain at 50% or can I move it up or down?
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Old 03-19-2016, 05:19 PM   #26
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Quote:
Originally Posted by RockyIII View Post
Re-ran calibration with gains set at 50% on all 3 subs and now I got -4dB as a final result.
Also, once we calibrate should we mess around with the gain controls again or from that point on we just adjust subwoofers from the AVR? For instance in my case should I leave sub gain at 50% or can I move it up or down?
Leave the sub setting alone at -4. The important thing is that the AVR sub output is not above 0 dB. If you feel that the bass is lacking after your calibration, you can always use the volume knob on 1, 2 or all 3 subs to bump it up or down a notch as long as you are not maxing out a single sub's volume. As for which sub(s) to bump and by how much, that is entirely up to you. Nobody here can help you with that unless we are in that room listening to your system and even then it is very subjective, everybody will have their own preference which may or may not align to your's.
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Last edited by ImPulSive; 03-19-2016 at 06:42 PM. Reason: Fix typo
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Old 03-20-2016, 01:43 PM   #27
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Quote:
Originally Posted by RockyIII View Post
Re-ran calibration with gains set at 50% on all 3 subs and now I got -4dB as a final result.
Also, once we calibrate should we mess around with the gain controls again or from that point on we just adjust subwoofers from the AVR? For instance in my case should I leave sub gain at 50% or can I move it up or down?
Quote:
Originally Posted by ImPulSive View Post
Leave the sub setting alone at -4. The important thing is that the AVR sub output is not above 0 dB. If you feel that the bass is lacking after your calibration, you can always use the volume knob on 1, 2 or all 3 subs to bump it up or down a notch as long as you are not maxing out a single sub's volume. As for which sub(s) to bump and by how much, that is entirely up to you. Nobody here can help you with that unless we are in that room listening to your system and even then it is very subjective, everybody will have their own preference which may or may not align to your's.
Sorry to disagree but no you really should not adjust the gains on the subs after calibration because that throws off the calibration. Instead, if you want more bass, raise the trim in the AVR.
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Old 03-21-2016, 11:26 AM   #28
RockyIII RockyIII is online now
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Quote:
Originally Posted by evoll View Post
When I ordered my svs sub they said to get my avr sub readings to 0 or below (mine is -4) and then set sub knob between 1-3 O'clock. If you use the rca cable splitter on the back of the sub it will give more signal to the sub also. Mine sounds great with these settings and rec. them to anyone.
That doesn't make any sense. Once your receiver undergoes calibration-since it calibrates based on also "gain" set-you shouldnt touch anything afterward.
If your final sub level reads -4 at 45% gain (for example), the gain should not be touched afterward or the -4 dB result no longer applies
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Old 03-21-2016, 11:28 AM   #29
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Quote:
Originally Posted by hometheatergeek View Post
Sorry to disagree but no you really should not adjust the gains on the subs after calibration because that throws off the calibration. Instead, if you want more bass, raise the trim in the AVR.
I agree (read my last post)...
But what do you do if subwoofer levels now sound great for bluray discs but a little weak for Netflix or Amazon videos, like in my case?
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Old 03-21-2016, 02:57 PM   #30
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Quote:
Originally Posted by RockyIII View Post
I agree (read my last post)...
But what do you do if subwoofer levels now sound great for bluray discs but a little weak for Netflix or Amazon videos, like in my case?
Your settings should be input-specific. I'd just turn up the trim in the level settings for those inputs.
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Old 03-21-2016, 03:12 PM   #31
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Originally Posted by Scarriere View Post
Your settings should be input-specific. I'd just turn up the trim in the level settings for those inputs.
Are you referring to the "bass" and "treble" optional commands?
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Old 03-21-2016, 03:18 PM   #32
Scarriere Scarriere is offline
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Quote:
Originally Posted by RockyIII View Post
Are you referring to the "bass" and "treble" optional commands?
No. Subwoofer level. It should be in your menu under speaker level or something like that. There will be levels for all speakers, including your subwoofer.
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Old 03-21-2016, 03:36 PM   #33
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Originally Posted by Scarriere View Post
No. Subwoofer level. It should be in your menu under speaker level or something like that. There will be levels for all speakers, including your subwoofer.
Yes, in my receiver audio settings. It is called "Channel Level", where you can change the levels of each channel (fronts, center, subwoofer, surround left and right, etc) for each hdmi source you have connected, independently of one another, without altering the calibration levels that were determined originally
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Old 03-22-2016, 03:33 PM   #34
hometheatergeek hometheatergeek is offline
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Quote:
Originally Posted by RockyIII View Post
I agree (read my last post)...
But what do you do if subwoofer levels now sound great for bluray discs but a little weak for Netflix or Amazon videos, like in my case?
Streaming vids will have some compression in both audio and video so I would expect the bass to be lacking. If you must have more bass then go into AVR channel level for the subwoofer and raise it to your liking. I never change my settings. If the bass is low I just blame it on the content or how the audio was authored.
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Last edited by hometheatergeek; 03-22-2016 at 03:39 PM.
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Old 03-22-2016, 04:53 PM   #35
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Quote:
Originally Posted by hometheatergeek View Post
Streaming vids will have some compression in both audio and video so I would expect the bass to be lacking. If you must have more bass then go into AVR channel level for the subwoofer and raise it to your liking. I never change my settings. If the bass is low I just blame it on the content or how the audio was authored.
There are such huge discrepancies i terms of subwoofer and also master volume whether going from one source to another. I can play a bluray dolby atmos title and the bass will shake my walls, but then I go watch Arrow or some other Netflix show and the bass is very dull
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