Hi guys
Im totally new to the Rabbit hole of Audio Appreciation.
I havnt even listened to a high end audio set up before, so i dont know what my listening style is yet.
I am about to put together a pair of GR Research diy "Bravo" speakers.
But i am unsure about what to use with lining the enclosures.
They are a 2 way ported speaker made from 3/4" MDF (well 18mm because im not is the US)
If that matters in any way
They recommended lining them with a product called "No Rez"
Unfortunately its far to expensive to import, so it was advised that i go with something like vinyl tiles or butyl rubber dampening mat.
To be clear this is about reducing vibration of the enclosure not about internal resonance/reflects or whatever its called (a complete noob here)
I think thats what i am supposed to be doing anyway.
Although, in thinking about it, i would not have thought that the No Rez did anything for resonance of the enclosure because i was under the impression that it required a certain amount of mass/weight added to the walls for that where the No Rez is just foam.
After doing a bunch of reading online, i am trying to decide between two options.
Butyl rubber sound deadener mat or mass loaded vinyl.
And im leaning more to the MLV unless someone has good reasoning otherwise.
One concern i do have about the MLV, is that with its intended application in vehicles it is advised that you use a Decoupling layer with the MLV because it apparently is more effective when applied with some give to it as opposed to laying it straight against a rigid surface like the sheet metal of a car door ect.
So you lay down a thin layer (1/4") of closed cell foam as the decoupling layer and then lay the MLV on top of that. Would that be necessary with lining a speaker enclosure or would that use case benefit more from it being rigid against the walls of the box?
As a side inquiry, if the No Rez in the set up of these speakers isnt for resonance of
the enclosure itself, would i need to stuff them with something to replicate what ever it was meant to do?
Because even though i dont really know anything about the audio world yet, i do know that every component of the original design of these speaker matters.
From the little that i have learnt so far, i know that Danny from GR Research doesnt do anything to his speaker designs that doesnt matter, so changing one little thing will effect the intended sound of these speakers
And because i have no experience in this field, i wont know if i have messed anything up and i want to start off with these speaker just as they are meant to be so i can adjust and upgrade everything else around the speakers as my taste and appreciation grows knowing that the speaker sound just how they are meant to.
And yes i am aware of the irony of that statement in a post about changing the component of the speakers that i want to stay just as they are meant to be.
But when it costs $200 to ship a $50 product from the US to AUS, some compromises have to be made. Hence the search to find a suitable comparative alternative.
Thanks in advance.
Paul M.
