Helmhotz resonators for audiophile at almost no cost and without calculus...


The importance to treat the room if you have speakers, even in nearfield listening like me, is imperative ...

Here is my advice: 

Buy some big  empty wine bottles, or drink them before, it is optional....Or use some carafes, the kind that some display at the center of a table....I use plastic  wrapping sheets to tightly seal the aperture of the bottles and the carafes after pouring in them around 10 % of water in their volume space...You must listen and experiment for your taste and room to determine the exact amount of water to boost the frequencies that will benefit….After that  I peirce the plastic sheet with a needle and I insert a  thin straw with only the extremity of the straw at the top...  That its! You know have an Helhmotz resonator... 

You now have one of the more astounding tweak for a room that will transform your listening space in sound heaven ...I use more than 15 of them in my little audio room and trust me that is one of a kind upgrading...

I wrote that for those who want to experiment, the others can stay silent...My best to all...
128x128mahgister
I gain some better results by cutting the diameter of regular straw in half and shorten the regular straw to  around 2 inches in many of  my carafe or in  some of my big glass container 3 or 5 gallons but not all of them...It is necessary to experiment in your particular rooms to go for the best.... I will never listen music in a room without resonators now...Great impact... my best to all...
I ordered four 500ml volumetric glass lab flasks yesterday to mess around with. These have very long thin necks & are about 4" at the base. I'll let you know how they work out. 
Some of my tips for this tweek.

1. Instead of using the "slush" straws how about using tubing perhaps the size used for ice maker's?. Or some teflon tubing used for interconnects. That way you can experiment with the length and/or the diameter of the tube. 

2. For a container, perhaps use PVC pipe with reducers, caps etc. for further experimentation. You can even coat the inside/ outside with Graphene.

3. Perhaps use some oil in sealed pouches inside the PVC pipe cannisters that won't evaporate as easily.

BTW, tweak1 you need to get some netting...

ozzy
Very useful and astute observations...thanks very much  and my best to you….
For the moment my experiments were very conclusive with thin staw compress to half of their original diameter,not more than 2 or 3 inches long, inserted in the plastic wrapped sheet at the nozzle of my varied carafe,bottles,or 3 or 5 gallons plastic and glass container+ only a minimal volume of water 1 inches...The results are so great that I will wait a bit to replace all that, cost is almost nothing...The impact on sound was so great that any other upgrade is probably less an upgrade than that cheap resonators room’s tweak...This thread is only to inform the newcomers about that... I am thankful for any suggestion about improving that for sure...Thanks then to Ozzy for that...