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Multi-Way Conventional loudspeakers with crossovers

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Old 22nd December 2012, 06:11 PM   #841
Salas is offline Salas  Greece
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Quote:
Originally Posted by Starre View Post
Thsi a measuring with 2 panels on the floor. It looks rather similar without panels but sounds better. I think I have found a way to improve this, posting more later tonight.
Its that bass mode if left prevailing over mids can come to sonic prominence is my only qualm about ironing mids out with more inductance for a more even room response. See a classic stand mount room averaged RTA from John Atkinson. Epos ES12. Which many listeners had found very articulate subjectively. Anyway, only some experiment will prove what is best in your particular surroundings. Such a graph you already got is commendably good for non averaged spot RTA in living room from a pair of speakers when comparing to most I have seen nonetheless.

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Old 22nd December 2012, 08:00 PM   #842
Starre is offline Starre  Sweden
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Yes Salas. I have tried a lot of tricks here but no real progress so I will leave it and try to listen to get what I like best and not measure it. I noticed one thing though, if I use a lower level when measuring a little of that peaking area is reduced, and goes up a little when increasing volume, so some of it is probably reverb building up. I will put up some curtains soon, not to make a better sound but to make a better looking room .
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Old 23rd December 2012, 12:44 PM   #843
Starre is offline Starre  Sweden
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The main thing seems to be that the Seas woofer is beaming starting at about 500Hz and even if you lower the output here a little if will still sound like beaming, and if you lower it further it will sound sunk in. I read somewhere a review with a speaker (Art loundspeakers) using a 10 inch Seas woofer from the same line that they heard some beeming so it might be those drivers and you have to live with it. No cross over can get rid of it without causing some other defect I guess. But over all it sounds good and on most recordings it is of no concern.
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Old 23rd December 2012, 01:30 PM   #844
Salas is offline Salas  Greece
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As I wrote recently, with larger drivers used as mids and woofers simultaneously, we got to make some strategic compromise. If we really flatten them out on axis, then we will start feeling dead the power response. Because its DIY and because we can, there is test area for different systems and rooms/preferences with the optimum value if there are spare coils around. 2.5mH in this design is good, but if you will ever have a chunky 3-3.5mH pair and an LCR meter (an $30 1%+few counts UNI-T one is good enough) you may start listening and unwinding step by step to your own Nirvana. Some day. So to witness the effects and fine tune your own to your absolute liking.
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Old 23rd December 2012, 03:40 PM   #845
Starre is offline Starre  Sweden
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I did one last(?) check, I put my listening chair in place and put back the front panels on the stands (I removed them some time ago since I thought the bass reflex tube output was a little too much with them in place). It sounds a little fuller in the bass and when measured it looks a little better than before. Bass a little more even and mid range slightly reduced (chair?). Listened and it sounds very good to me. I also put my damping panels in place inbetween speakers in the middle since it might dampen the room a little. Now I will let you rest Salas , happy hollidays.
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Old 23rd December 2012, 03:48 PM   #846
Salas is offline Salas  Greece
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Easily influenced by room fixtures and other decisions. There are many ways to skin a cat. Merry Xmas 2U2.
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Old 26th December 2012, 05:43 PM   #847
Starre is offline Starre  Sweden
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I have put the measuring equipment in the case and tried to forget it and just enjoy listening. If I just listen and do not reflect it sounds very good. I only have a sligth unbalance between bass and mids which I think will be reduced with some curtains in the room. My father listened the other day and he was impressed with the "clean sound" he heard. He is not very interested in hifi but I noticed he listened longer than he use to, a good sign to me .
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Old 26th December 2012, 06:39 PM   #848
Salas is offline Salas  Greece
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If father says OK in Christmas, there is little left to do.
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Old 5th January 2013, 02:15 PM   #849
Starre is offline Starre  Sweden
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I am about to shorten the stands a little. Mostly for looks.
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Old 7th January 2013, 05:17 PM   #850
Starre is offline Starre  Sweden
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I shortened it 2 cm and it looks better. I think it sounds just fine with no big difference, maybe even better. Stands are 30,5 cm + 71,5 cm speaker making it 102 cm in total.
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