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Mark*F, I am betting that it is your receiver and how it is connected. I am running mine on an HK avr525 via the sub out. --pat

So if you take the offsets and apply them to my numbers you can get a much flatter response 20hz - 52db + 7db = 59db 25hz - 70db + 5db = 75db 30hz - 70db + 3db = 73db (estimate) 35hz - 79db + 3db = 82db (estimate) 40hz - 85db + 2.5db = 87.5db The 2.5 meter distance reading is even...

Here are some corrections listed for the spl meter: http://www.svsubwoofers.com/faq_rscomp.htm My meter is digital, so I am not sure it would follow the same offsets.

I have also done some reseach today about the RS spl meters. In general they are not that accurate.

Manuel, I was thinking the same thing. I noticed a very large difference when moving the meter around the room. Especially at the lower end of things. It made a huge difference. Sometimes 5-10db or more.

ok new numbers.... The kids had stuffed some bags beside the sub once removed I got much better results from my seating area. from 2.5 meters away( same distance as my first test) 20hz - 52db 25hz - 79db 30hz - 83db 35hz - 85db 40hz - 85db 1 meter distance: 20hz - 52db 25hz -...

I took the readings from the middle of my room. The sub is in the corner. I would estimate that it is about 1.5 meters away. maybe a bit more. I will try again at 1 m. --pat

20hz was 57db. I could not feel or hear it :frowning: One thing to note for me is that if I played 40hz over 85db my mitsubishi tv would rattle. Should I be worried for normal movie watching would you expect to hit 85db in those ranges? Thanks. --pat

Guys, Here is what I tested: 25hz - 74db 30hz - 73db 35hz - 78db 40hz - 85db I think I will try a 20hz I hope that I have my spl meter set right. I have an rs digitial one. Just got it so I am not sure how to use it correctly. I have it set range to 80, response slow and wieght...