Low frequences problem, need help!

Started by duki on 18 March 2010. 63 replies. In the Library under Measurement and tools.

Originally posted at johnlsayers.com, topic 14203.

is this a control room? looks more like a really nice listening room... if the diffusion will target some of the 700hz-3Khz then i'd say try it.
Haloo gullfo and thanks.
is this a control room? looks more like a really nice listening room... if the diffusion will target some of the 700hz-3Khz then i'd say try it. is this a control room? looks more like a really nice listening room... if the diffusion will target some of the 700hz-3Khz then i'd say try it.
My room is listening room and home theatre 5.1,so there are two speakers behiden and one in the front center. What kind of the diffusors do you suggest on that position? :D
i'd shoot for something in the QRD prime=13 or if a primitive root sequence, something like prime=17. you could built them without well dividers out of 2x lumber or heavy foam on a plywood backing panel. if you wanted to go up a bit in complexity to 1x lumber (or equiv foam), then i'd go with a QRD p=23 and PRS p=31. if you build them with the well dividers, use 1/8" ply.
File not preserved: various 1x and 2x diffusers.skp
Image not preserved: various 1x and 2x diffusers.jpg
This is fantastic thanks alot gullfo for sketchup drawing :yahoo: :yahoo:. Can I use those dimension from sketchup and straightforward go to build one? I think the best solution is QRD p23, what is your opinion? This diffusor working from 700-3000hz? May I install two of them like on the picture down?Or I do not need two of them on each wall? How diffusor effect on the RT60? I need to decrease reverbtime on the range from 700-3000 hz And again thanks alot.
Image not preserved: diffusor.jpg
Image not preserved: diffusor 2.jpg
you can build them as-is and space them a bit on the wall.
duki wrote:
What do you think about PA sistem in my home theater? :) Do you have any expirience with PA sound?
the speakers you have seem nice but without a total design might not be what you need. you might want to visit some HT DIY forums where people discuss the details of massive HT sound systems. for myself, i have some VOT A7 style cabinets with Altec drivers, matching horns etc but since the cabinets alone are about 3'x3'x5' they're a bit big for my living room...
you can build them as-is and space them a bit on the wall.
Ok thanks I will do it like that. :D
the speakers you have seem nice but without a total design might not be what you need.
I am not sure what did you mean?
you listed some speakers as components but by themselves are not useful. you need to have the overall design of the cabinets and use in the room and crossovers etc to pull it together.
you listed some speakers as components but by themselves are not useful. you need to have the overall design of the cabinets and use in the room and crossovers etc to pull it together.
Ok I think it is not a problem for the cabinets,I am using DCX2496 crosover for now. I only need some one with expirence like you to give comparation...or his opinion about this idea shortly, and if it is not toomuch to ask to describe what is the feeling with PA sound in the room? My impression is the biger system(biger drivers,biger cabinets..) the sound is bether,more live??? Thanks alot gullfo.
what kind of speakers do you have currently? having massive speakers isn't necessarily the answer since there are many options which affect the performance not just cabinets but the coupling to the room, the ability to move the speakers to get them in the best position could be hindered by large speakers. plus you need to consider your hearing. massively large and powerfully driven speakers could damage your hearing if you're tempted to turn it up because you can...
Hi gullfo. I was away for awhile.
The speakers are -ScanSpeak( revelator seria),one midrange driver,one high and two bass drivers per box. http://www.tymphany.com/datasheet/printview.php?id=318 http://www.tymphany.com/datasheet/printview.php?id=84 I can not find link for bass drivers in this moment but I will It is true that my speakers are made DIY but the designer is in bussines 20 years allready.I produce the boxes myself (I own small Furniture factory) on the pictures below are my speakers. Ok John do not give up on me I still need help!!
viewtopic.php?f=1&t=14203&start=15
so the speakers you have seem pretty decent. do you have / way a pair of subwoofers? combined would seem to be more than enough for a listening room unless you need to go over 100db on the high end.
Thanks Glenn I will try :)