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In Reply to: RE: took today off, supposed to rain all day, gonna do some seeeerious jammin' posted by Green Lantern on January 13, 2017 at 06:36:05
I noticed in a few of your videos you posted you went from tweets in to tweets out. I may have to experiment with tweeters in for a change; I haven't adjusted them much in the last 4 years...
so much is changing in my system: I have tried my new DAC direct into the amps and the sound is so different: treble is forward, and the bass is much less boomy. Last week the best thing I could do is make more tube traps, this week I am considering ordering some different filter modules from Marchand. But I will try speaker placement first.
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I'm having trouble with midbass boominess -- very high Q so I only hear it on the occasional recording. I think it's being caused by the cavity formed by my fireplace mantle and the adjoining walls . . . one of my woofers is right in it.
Should be pretty easy to fetch a scrap piece of drywall and cover the fireplace opening...or plywood? should give you a quick answer if that is what is causing the boom.
I think it's actually the space to the left of the mantle. I've filled in the fireplace itself with an electric fireplace (chimney is now filled with other stuff and it has a gas pipe but I didn't want a ventless gas fireplace), so I don't think it has much effect:
(The speaker was leaning because the floor is uneven -- I've since propped it up.)
ah, I see what you mean. I don't think you want to permanently close that section in, but if you have the ability to go to a home hardware and get a full sheet of drywall and cut it to size to just fit, maybe some short 2 x 4's to hold it against the wall, it would only be about a ten-dollar experiment?? Most walls in peoples sound rooms are built the same; a stud every 12-16 inches won't make a difference to anything greater than 100hz.
As far as straight vertical speakers the Mye stands are fantastic for leveling them with the screw adjustable brass points at each 4 corners. I have my spikes in carpet, and a take a 6' level to make sure they are plumb (vertical)in both planes. Over time they need rechecking because the spikes will settle into the carpet and carpet pad; and then I move the speakers and have to do it again!
I've thought of putting a bookcase there with doors, the space is 12" deep. Unfortunately, I don't have enough width so have the right hand speaker against the wall in the depression. I'm thinking of separating the woofer panels -- a single midwoofer planel could touch the left of the mantle. Then I could combine the low bass panels and put them at the other end of the room.
So, basically, still experimenting.
Mye stands would be great, but very costly for the six panels of a Tympani! Anyway, as I said, I'm still experimenting and the floor is bent every which way, so for now I'm just propping stuff under it. I may end up moving the radiator at the left too -- I spoke to the plumber about it. The problem is he might have to open up the wall to move it and I'm not sure I want to deal with that.
I was also thinking you could plug the cavity by the fireplace with a bookcase. Easy and not permanent and gives you some storage in the room.
I was thinking about doing it when I wanted to orient the speakers the other way. Now I think ti will depend on what I ultimately do with the woofers. Right now, I need all the width I can get, but if the split woofer experiment works I'm hoping to move the RH midwoofer so that it's touhing the left hand edge of the mantle. That would leave the entire space open and a bookcase there would be handy.
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