Re: SPL and auto big difference.
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Joined: May 2002
Posts: 10,654
shareholder in the making
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shareholder in the making
Joined: May 2002
Posts: 10,654 |
Michael, you might possibly reach over and do sub settings by "braille" as I do after backing my EP500 tightly into a corner. Because of the sensitivity of my fingers, I've determined that the level setting I arrived at(with the receiver sub trim at +2dB)was about 7:38:23. Don't overlook the significance of the trim control which Peter mentions, especially if your room isn't very large. In my particular combination of room size and sub location in a corner, I found that the "full" trim setting gave smooth yet still very strong results in combination with my M22s.
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Enjoy the music, not the equipment.
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Re: SPL and auto big difference.
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Joined: Jan 2004
Posts: 13,849 Likes: 15
shareholder in the making
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shareholder in the making
Joined: Jan 2004
Posts: 13,849 Likes: 15 |
Can you tell me where your listening position is in relation to the front (sub) wall and back wall? I'm guessing that your seated in a location that has a room null. The ideal location is 38% from the front wall, followed by 38% from the rear wall. These locations are best for flattest response. 50% is not great, and the worst is being up against the back wall.
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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Re: SPL and auto big difference.
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Joined: Dec 2005
Posts: 3,301
connoisseur
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OP
connoisseur
Joined: Dec 2005
Posts: 3,301 |
My listening position is about 10 feet from the sub which sits about 2 feet from the back wall and 1 foot from the side wall, there is virtually no back wall behind the couch since my setup runs at an angle and the room is open to another room that's at a slightly lower level, the nearest wall in direct line with the front of the sub would be around 40ft away. I think you are right about me sitting in a fairly null area, as John and Peter suggested I'll try adjusting the trim settings to see if that helps. Of course I can manually adjust everything so it sounds great in my sweet spot, but like most folks that get into this darn hobby it bothers me that I can't get it optomized throughout the room, and the fact that my Denons autosetup will drop the sub 10db's.
A computer once beat me at chess, but it was no match for me at kick boxing.
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Re: SPL and auto big difference.
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Joined: Jan 2004
Posts: 13,849 Likes: 15
shareholder in the making
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shareholder in the making
Joined: Jan 2004
Posts: 13,849 Likes: 15 |
Good Luck...The newer Denon's have the latest technology from Audysseywhich takes measurements from 8 (depends on model) different locations and then applies filters to even out the frequency and get the best response from all locations. Reviews have been very positive from many reputible online websites. I know you don't want to get a new AVR.
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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Re: SPL and auto big difference.
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Joined: Dec 2005
Posts: 3,301
connoisseur
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OP
connoisseur
Joined: Dec 2005
Posts: 3,301 |
Oh I want that Audyssey But I'm starting to think I just may be one of the lucky ones in the group who's rooms suck.
A computer once beat me at chess, but it was no match for me at kick boxing.
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Re: SPL and auto big difference.
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Joined: Sep 2004
Posts: 11,458
shareholder in the making
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shareholder in the making
Joined: Sep 2004
Posts: 11,458 |
Welcome Home, My Brother.
::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::
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Re: SPL and auto big difference.
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Joined: Jul 2006
Posts: 2,102
connoisseur
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connoisseur
Joined: Jul 2006
Posts: 2,102 |
Quote:
Oh I want that Audyssey But I'm starting to think I just may be one of the lucky ones in the group who's rooms suck.
Good thing is that it can be fixed, like just Randy's.
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Re: SPL and auto big difference.
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Joined: Aug 2006
Posts: 105
veteran
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veteran
Joined: Aug 2006
Posts: 105 |
One thing I noticed about the suggestions in this thread is that you are using a range of 70 db and push the needle up to +5 to get 75 db (if I understand correctly). I have a very similar SPL meter (different brand but looks exactly the same) and the manual says that if the needle goes above ~+2 or 3 you should switch to a higher range. Reason being is that if you do the battery test its basically pushing the needle as high as it can go with full voltage applied, and if your batteries are low (say +2 during batt test) then there's no way to get a consistent reading at +5. It would only ever get there due to fluctions in the bass frequencies that cause the needle to 'swing' past the +2 up to the +5 for a short time before it drops back down. This could explain why your sub needs to be so loud, to get lots of these fluctuations to keep the needle close to the +5 position. If this is the case, I'm not sure why the other speakers are able to be calibrated at +5, possibly because they use higher frequencies and the fluctuations happen much more often.
My suggestions is to calibrate at a different level, such as 70 or 80 db, to overcome this limitation of the analog device. This way you will be able to see fluctuations both above and below the reference point and will not be depending on the battery level.
____________________________
M22
VP100
QS8
EP500
Yamaha HTR-5960
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Re: SPL and auto big difference.
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Joined: Dec 2005
Posts: 3,301
connoisseur
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OP
connoisseur
Joined: Dec 2005
Posts: 3,301 |
Thanks Jason, I'll try the 80db setting and see what happens, I've done some searches and have read about other people having similar problems in trying to get the db's on their subs high enough, I may be just dealing with odd room acoustics.
A computer once beat me at chess, but it was no match for me at kick boxing.
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Re: SPL and auto big difference.
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Joined: Jun 2003
Posts: 8,488 Likes: 1
axiomite
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axiomite
Joined: Jun 2003
Posts: 8,488 Likes: 1 |
Michael, I think Jason's suggestion is good, as are your observations about nulls. You might try a inverse sub crawl; leave the sub doing something relevant where it is and walk around - even to the adjoining rooms. I was very surprised to find a big peak in the kitchen when I did this. I'm sorry that I haven't been following your story very closely, but if there is a way to experiment with sub placement, I'd strongly suggest it.
bibere usque ad hilaritatem
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