Acoustic hangers

yes - but the concrete soffits housed twin 15" drivers - is that what you'll be having??

I wish! It will just be a pair of humble Adam A7's, and a Sub-8 down on the floor.... If I tried to put 15" drivers in there, I'd be out of soffit already! :( But say, if I'm using 8" speakers, and he used 15", does that mean mine will sound a bit better than half as good? :lol: - Stuart -

actually - I suspect the quality of the new 8" drivers is superior to the old 15" crankers :)

Hi John and all of you. A attached some pictures of the hangers I made for the studio I designed. There are seven on each site. 2.5 Meters high and the width varies from 30 cm till 75 cm. I'll hope that's enough.... Don't mind the HVAC outlets hanging there. They gonna be mounted in the ceiling. In the middle comes a diffuser.

Hi all, thanks for the....(I hope).............Sticky to be!!!! Two and a half question-statement(s), only to stimulate all you experienced people on this forum to share your visdom once again! Q1 Wouldn't a RealTrap work as a hanger if arranged in the same way? (Ethan, have you tried to place them like hangers?) Q2 Would it be possible that the soft particle board is selected only due to its low density but still strong enough as a core supporting hanging assemby and to carry fluffy insulation glued to it?

Hi Kaj, Interesting idea. I've never personally had much luck with the hanger method. I've definitely never tried using MiniTraps as bass hangers. My suspicion is that it wouldn't work. The normal bass hanger design uses a rigid surface, with absorbent around each side. This is basically a gobo. The MiniTraps are velocity absorbers, which require sound to pass through it. It'd be interesting to test this out, though....

John Is it possible to use Styrofoam/Expanded Polystyrene/EPS or whatever you call it there instead of the homosote? I cant find something like that here. Maybe Homosote is similar to OSB ? If not. what else?

I reckon the close equivalent would be heavy packing cardboard, maybe two sheets glued together as homosote is made from recycled paper.

Cool I'll get some heavy cardboard then...

Hi All, I've placed my acoustic hangers and diffuser in the back. (See above.) But when I'm on he mix position, I have (too)much sub low and when I listening in the back of the room there's none...zero...sub low. :?: :?: Somebody any ideas why there is no sub low in the back of the room? Too much trapping????

It appears you have a standing wave between the front and rear of the room. The diffusor won't have any effect on the low frequencies so it just bounces the lows back at you. Try removing it.

Thanks John. That must be it, standing waves. :oops: I'm going to measure the room Friday. What's the best way to treat a standing wave?

John. Hangers seem to not happening here. I managed to purchase heavy cardboard but they are really small sheets. Even tho they are kinf of hard. they are nothing like homosote since they are "hollow" (a corrugated "S" sheet of carboard sandwiched by two rigid carboards, and x2). So Im guessing the density and resonance its not even close to a solid, pressed sheet of recycled paper like homosote. Can you think of another replacement? Or send me some homosote sheets to Chile :mrgreen:

micmic wrote:

What's the best way to treat a standing wave?

In your case just had heavy absorption across the rear wall instead of the diffusor

jb - The product is Pinnacle - Tackboard. http://www.pinnacleboard.com/ If you can't get that just use 1/4" OSB or similar.

What about CORK ???

yeah - good suggestion. When I started out in recording in the 60s cork was our version of 703. We'd line walls with it for acoustic treatment.

Ouchh.. A small sheet of cork ( 0.9 x 0.5 meters), at 1 cm thick.. is about $22 usd !!! Cork here seems to be very expensive!! And we don't have large sheets like osb or drywall.. just those smal ones Something doesnt want me to build hangers it seems . hee

forget about cork, really.

Ro wrote:

forget about cork, really.

oh really Ro - why? apart from cost.

The absorption coefficient of cork is nothing compared to a cool sheet of wool, wouldn't waste my precious money on such 'expensive' material :)

Ro, I'm not triying to replace cork for the wool... the homosote (or on this case cork) is intented to be placed between two sheets of wool

ah, my mistake (ye know, i'm lazy and don't read the threats from start everytime0 :mrgreen: But still, it's an expensive option. I'd use something cheap like hardboard or floorvelt or whatever (if homasote isn't available)

High John,Ro and the rest... Getting back to my standing wave problem. Can I treat the front wall(that's a blind wall) and side walls, instead of the back wall where the diffuser and the hangers are. I'm rather not remove the diffuser for my standing wave problem. It's very heavy and difficult to remove.

why not stuff your diffusor with insulation and put a cloth front over it. I know you are proud of it but it's useless in the room as it is.