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Old 07-31-07, 03:50 PM   #8 (Link)
 
bigDvette
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Alias: BigD
Loc: Texas
User: #10312
Since: Jul 2007
Posts: 9
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Re: Help with understanding my graphs


Ok, I have gone and calibrated everything again and it looks good.

I spent a lot of time moving the sub around last night and most of my graphs look like the first one I posted with the dips around 34 and 60. Now that I have 6 GIK bass traps in the room stacked 2 high in 3 of teh corners (there is no real 4th corner to speak of) I dont have as dramatic of a peak at 42hz.

I was able to move it to reduce the severity of the 34hz dip, but then I had a dip that went off the chart at 65hz. It was a very narrow dip. Anyway, that was with the sub almost mid point in the wall.

So, I think I want to try something. How do I test the sub curve and minimize the effects of teh room? Do I measure it close to the sub and point it at the sub? Can this be done? I just want a reference curve. This is an ep500 and I want to make sure the DSP isn't causing some of this.

Also, what causes large drops like that? The room, the sub. I know the answer is both, but I can move it around a lot and even when it isn't as steep, it is still there. I was thinking of trying it in the back of the room to see if it dramatically changed the graph.

Also, people mention setting front speakers to small. I don't have that setting on the onkyo nr1000. I can set the crossover point for all 7 speakers. I have teh sub and the fronts both set to 80hz. Is that right? For many of the tests I disconnected the mains.

Good think I've been working out :-)


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