I finally got 2 panels for testing today. What is most effectice (since I only have 2): putting them directly behind speaker on the wall or in the middle between speakers? Have to try it out of course but maybe someone worked with panels like this with some experience.
Ok I will try that. I put one panel behind listening position and it had a slight effect. I will measure and listen tomorrow and see what I find.
I have tried with the panels but it made a very small difference. This is about as good as it gets right now (picture). As seen it is a little to much middle range level. Salas, do you think I can get this lower with some more stuffing behind woofer? If I changed the 2.5 mH coil it would help but It is not possible so a little more stuffing might at least help?
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It is stereo yes at listening position (about 3 metre from speakers) in listening height. Lower than about 50Hz is noise from the room, it does not have that level down to 16Hz (of course),
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That graph has to be averaged, because it can be deceptive in a way. The 8inch driver surely beams before crossover and above. So the question is, do you perceive a mid heavy balance as depicted on the above spot measurement? If yes to an extent, then some stuffing can help a little if its not too pronounced. The key is either by crossover or angling or stuffing to have as much mid balance as it is enough before the ear locks to the circa 60Hz room mode. I have seen some flatter graphs from you I think, were taken in the other location?
P.S. If you take a measurement without the speakers playing, how it looks like for measuring system's and room own noise floor?
Well I probably had flatter in some but I made many measurings at and near listening position and they all had a similar level increase in the middle range. I think some near field ones looked flatter. I will try to put some more stuffing in and also wrap the extra bracing I put in with it and see what happens. If I am right too much stuffing can lower bass output and then the balance is wrong anyway. Yes I will post a measuring with the room noise, brb.
Mids are a little too much sometimes on that Nora Jones CD I mentioned before but better after I moved the speakers to the other room direction.
Also, the speakers are toed-in almost directly aimed at the listeningpos. so that trebel will not fall in level above 16kHz, maybe that beeming you mentioned gets noticed with that toe-in?
Too much residual in the measurement. Maybe you can still measure at higher SPL safely for Wattage when the speakers are playing? Try 5-10 degrees wider for toe in before doing something in the speakers themselves.
Ok here it is, I boosted the level a little, hope it is enough.
First picture is as it was, then picture for picture the less toe-in it is and the last one straigt ahead without toe-in. It is the lined out top level that you should read. They all seem rather similar.
First picture is as it was, then picture for picture the less toe-in it is and the last one straigt ahead without toe-in. It is the lined out top level that you should read. They all seem rather similar.
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Hmmm... It could afford less mids as a pair at that particular point in space, looks like only the brilliance range tames with toeing out, but I am kinda worried of that bass mode that now the mids level meets. I mean the ear has the trait to lock on things in relief, and maybe if you will try drop the mids a bit it could suddenly start dragging. But all it takes is a trial as always. Do you have a circa 0.25mH coil to put in series to the bass driver?
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