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Old 07-30-07, 01:33 PM   #6 (Link)
 
warrensomebody
Shackster
Alias: wh
Loc: San Francisco
User: #10347
Since: Jul 2007
Posts: 22
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Re: Any hope for my poor room?


brucek & clubfoot - Thanks for both your replies.

Bruce - I completely agree that I probably don't want a $180 device in my mains signal path, but I'm probably in voilation of the hi-fi laws and code of conduct by having a digital preamp, and for usually preferring my mp3 collection to the pile of vinyl and plastic. But as long as I can avoid jail time, I'll keep optimizing!

(And don't get too excited about the cost of my speakers -- I got a very good deal on them used.) (Getting them shipped out was a whole other story, though...)

I'm actually away now, visiting family, so it will be a few weeks before I can take any more measurements... but I did take some of just the sub before I left. I know what you mean when you say you hope the waveform didn't include the subs -- but it did, and I was a little depressed by that. It could be the size of the room, the placement of the subs, or the phase -- I'll have to experiment some more when I get back.

I've included a graph of just the subs with and w/o the EQ (green, and red respectively - 1/3oct, 80hz cutoff, response averaged over 4 sweeps +/-1ft from the main listening position). I'd appreciate any insights you might have into what's going on with them.

And clubfoot - I don't quite follow your comment "set your mains to small..." do you mean set my prepro to think they're smaller speakers which will make it easier to evaluate their response? Would that be different/better than just turning the subs off to get them positioned?

Warren

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