David...youv'e lost me a bit there..I set the master volume at reference "0.0db" to read 75db on SPL ... to my surprise the reading was "85.0db on all speakers" in the front row; and "80.0db" on the back row :unbelievable: ... to get the 75db I had to use the volume at "-10.0db" and "-6.5"
Sorry ...David...youv'e lost me a bit there..
We can say that my reference volume is not 0.0db ... is -10.0db :yes:... Then all the other speakers would be adjusted with the volume trims to read 75db..
I don't understand if you've set them all to 75db..that your'e now getting a reading of 80 -85db.!!
Now that makes more sense..but of course 85db. is too high at reference level..Sorry ...
When I used the reference level master volume at "0.0db" the reading was "85db" on each speaker (we can say that they were calibrated properly, Right???)
Why do that..? Why not lower the speaker trims to all read 75db?To get the 75.0db reading... I had to lower the master volume to "-10.0db" :yes:
The YPAO is notoriously inaccurate for setting speaker levels..I discovered the high SPL's (85.0db) after I used YPAO, I always double check with the SPL meter to fine tune the response of each speaker :bigsmile:
My surprise was that YPAO used the the reference "0.0" but not with the 75.0db output ... I thought that YPAO will trim each speaker level to the minimum (-10.0db in my case) to output the 75.0db at reference (0.0db) not 85.0db :yes: :dizzy:
If you haven't got enough adjustment on your individual volume trims..then yes, it would be necessary to lower the gain on the main amp..The same thing happened to me and it was because the amp is sending more power to the speakers than the reciever did so when you have the gain wide open on the amp the reciever cannot correct for it so it just sets the master ref to 0db and with more power you are getting higher db's. You should set the ref level in the reciever back to 0 and then lower the gain on the amp a little at a time to get your 75db setting. I had to turn my amps down to about 3/4 to be able to set ref level with the master at 0db.
My trims were all bottomed out so I had to lower the amp gain. I thought he was in the same situation?If you haven't got enough adjustment on your individual volume trims..then yes, it would be necessary to lower the gain on the main amp..
I got this part ... but what I don't understand is, Why the AVR didn't cut the front speaker levels to get the 75.0db at reference??? ... (front speaker level were -1.0db/-3.5db, and it can be trimmed to -10.0) :yes:The same thing happened to me and it was because the amp is sending more power to the speakers than the reciever did so when you have the gain wide open on the amp the reciever cannot correct for it so it just sets the master ref to 0db and with more power you are getting higher db's.
Yes it can be done ... but I prefer to have my reference level at "-10.0db" instead of "0.0db" :bigsmile: (I feel that I have that extra volume 10.0db to get to 0.0db and after that I have 16.5db more :unbelievableYou should set the ref level in the reciever back to 0 and then lower the gain on the amp a little at a time to get your 75db setting. I had to turn my amps down to about 3/4 to be able to set ref level with the master at 0db.
... I'm not sure if you saw one of Tony's posts; he's using his reference at "-15.0db"Maybe you should try the same to take full advantage of your amp's :yes:I have a setting on my Onkyo that adjusts all the levels simultaneously with one setting. So I have my master volume set at -15 for reference level output as when I choose to use my receiver as a two channel setting (pure direct) I want the extra db's I have ocationally run my volume control at +10 or more and wanted the extra headroom Now I sometimes only run at 0db
If should have. YPAO doesn't know the difference of what else is in the chain, it adjusts the trim levels acording to the SPL present at the mic.I got this part ... but what I don't understand is, Why the AVR didn't cut the front speaker levels to get the 75.0db at reference??? ... (front speaker level were -1.0db/-3.5db, and it can be trimmed to -10.0) :yes:
I don't think so because the first time (before I had the external amp) the reading after the YPAO calibration was correct "75.0db" at reference.:yes:I'm thinking that maybe the internal test tones in the Yamaha are intended to be calibrated at 85db.
That's what I think ... somehow YPAO adjusted the speaker level to have the same output at reference, and doesn't have to be 75.0db (the speaker readings were 85.0db at reference):yes:If should have. YPAO doesn't know the difference of what else is in the chain, it adjusts the trim levels acording to the SPL present at the mic.
Not yet, I haven't really got time to play ... I will use DVE to double check the settings :bigsmile: (I also have the THX optimizer to compare) :yes:Have you tried another calibration method like the test tones on a THX dvd? My guess* is that those test tones will register at the proper level.
Interesting.. YPAO has set all my speakers within 0.5db of one another. I couldn't be happierThe YPAO is notoriously inaccurate for setting speaker levels..
I only use it to set up initially for delays and speaker distances, and then set all my speaker levels manually with the volume trims to read 75db..
