Avia Sub Matching (1 Viewer)

[Jason Wolters]

Calibrating my sub-level using the Avia disc to 75 db (actually this makes the sub at 85db) to match the left channel, leaves me wanting more, from my sub (PDR-10) when I am listening to a DVD. Anyone else experience this? I understand Avia's reasoning for not allowing an LFE calibration, but with my sub calibrated to 75db level, it seems to be lacking. My room is quite large. It is 42'x15'. I have the sub level considerably higher than the 75db that would match my front left speaker. I get nice rumble and percussion as opposed to an average.....Wooompf, when it is set to 75 db.

 

[Guy Kuo]

The sub should be matched to the current SPL level of the center channel during the center/subwoofer test, rather than targeting 75 dB. If the center speaker reads X SPL during the calibration tone, adjust the sub to also read X SPL during the sub portion of the test tone.

 

[DanaA]

As long as the sub can take it, why not turn it up, if that's your preference? It sounds to me like you'd constantly be frustrated if you didn't have it set higher. I personally have my Hsu set a bit higher for the extra little punch. Set up the system the way you like it. If a little higher volume on the sub is what does it for you, then I'd say go ahead and enjoy.

 

[Jason Wolters]

The sub should be matched to the current SPL level of the center channel during the center/subwoofer test, rather than targeting 75 dB. If the center speaker reads X SPL during the calibration tone, adjust the sub to also read X SPL during the sub portion of the test tone.

Guy,

I had a little trouble understanding the menu on that calibration. It says something like you only need to match the front left unless you have a seperate sub for each channel? Did I understand this incorrectly? When I do the sub matching, all of the channels are still at 75 db as per my prior 5 channel matching setup. (I leave the volume at reference)So therefore I am still calibrating it to 75 db?

Can you help me to understand the test tone that is used for 5 channel matching and sub matching. I have read several of your explanations on this subject, but I don't fully comprehend why exactly this signal is being used as opposed to say, Pink noise. I believe it is supposed to somewhat account for variations in acoustics in the room? Also, it seems like to me, the higher frequency portion of the sub level matching test tone, is identical to the 5 channel matching tone? Is this correct?

 

[Barry_R]

Jason, I also found that part of the AVIA disc somewhat confusing. So I second your question in the first paragraph. I've also found that when adjusting the sub level down to the level of the other speakers, the sub seems to low in comparison.

Thanks to Guy for your help.

Barry.

 

[Guy Kuo]

David worded that section for the subwoofer overendowed (people with a separate subwoofer for each channel). Most of use don't use that many subs. Since all five main channels should already match each other, you can just match against the left main speaker's SPL level.
I said to match against the center speaker's SPL reading, but really it should be the same whether you match against left, center or right speaker.
85 dB SPL during the AVIA test tones is actually reference. The tutorial has you aim for 75 dB on the SPL meter which is actually 10 dB below reference. This is because most people end up listening about 10 dB below reference at home and we wanted to get the newbies to that state as quick as possible. The HT enthusiast later learns to aim for 85 dB SPL to reach reference state.
Also, look here if you haven't already Link Removed

 

[Jerry AZ]

85 dB SPL during the AVIA test tones is actually reference. The tutorial has you aim for 75 dB on the SPL meter which is actually 10 dB below reference. This is because most people end up listening about 10 dB below reference at home and we wanted to get the newbies to that state as quick as possible. The HT enthusiast later learns to aim for 85 dB SPL to reach reference state

And not get us apartment dwellers kicked out in the street.

 

[Jeremy Anderson]

I understand Avia's reasoning for not allowing an LFE calibration, but with my sub calibrated to 75db level, it seems to be lacking.

Also, if it hasn't been mentioned, Avia does have a 6-channel pan in the VERIFICATION/EVALUATION section that uses the LFE channel, which will let you double-check LFE output and adjust any LFE trim your receiver may have.

 

[Jason Wolters]

Also, if it hasn't been mentioned, Avia does have a 6-channel pan in the VERIFICATION/EVALUATION section that uses the LFE channel, which will let you double-check LFE output and adjust any LFE trim your receiver may have

During the 6 channel pan I notice a drop on my LFE. However, my Kenwood VR507 does not allow for LFE adjustment. (that I know of) Where does this leave me? What should I do?