Soundman2020 - Studio Design Forum

5794 I just need to do some testing on my seals as to compression - my working assumption is 40% based on the following https://www.elastoproxy.com/enclosure-gasket-compression/ Andrew Great stuff, your mortice jig will certainly pay for itself! Perhaps it depends on the type of gasket used, with t...

Here's how I calculated the pressure loss for one of my silencers: take special care of the different measurement units involved! Silencer box flow calculations using the equivalent duct length method: Cross section area of silencer is 18*20 = 360cm2 Equivalent diameter is 21.41cm = 8.43" Equat...

5788 Apologies, as I said, they were old pictures just to show you the location; the old images were showing the original plan of four boxes. here are some updated images that hopefully show the final location/design of the dual boxes: Looks good. I think you mentioned before you have a structurall...

I certainly paid the price for my vanity in hard labour

5770 nice! for some reason i though there was a UK source for the boot seals similar to what Rod had in his book. nicely done workaround though! I think there is, either that or an equivalent. In truth, it's my own fault, I rather wanted a brown seal to blend in with the wood, and as far as I know ...

Gasket update! I couldn't find a gasket with enough variation, that was also of the "stick on" type to replace that leaky gasket. The solution lay not in the gasket, but in the frame itself. I found 10mm wide thin hardwood strips online, and use these to build up the wonky door frame so it...

Here's another showing the pressure loss curves (what I've been referring to as "static pressure") of two 90 degree duct bends, one normal, one high efficiency. So for example, to get 6 air changes per hour in my control room requires an air flow rate of 50 l/s (litres per second). At this...

5758 What I planning is to have the outlet/inlet grill on the actual boxes themselves, if you imagine on the pic below, as the end of the boxes fall roughly in the center of the room (front and back) this seems to be a good placement for them room-wise. Left one (rear) will be over the sofa at the ...

That's great news. I love the workaround you have designed to allow the inner structure to be kept isolated from the centre support beam!

Cheers,
Jennifer

And yet another consideration before you commit to the fan would be estimating the static pressure of the entire system - grilles, ducts, silencers, filters etc. You can use this with the datasheet for the fan (linked below) to determine the likely air flow rate at different fan speeds. If you'd lik...

Also, have you thought about an air filter? If you're going to use one it should be before the fan inlet to prevent dust & debris being drawn in to your studio. I used an inline filter box like this and it was easy to install. After a while in use a significant amount of debris had accumulated o...

5740 X = (Y - 7) / 2 = (20.4 - 7) / 2 = 6.7” 6.7” = 170mm If I divide the box length by 170mm (rough calculations) I get 14. The liner will take up space so I'm thinking 13 baffles. Let me know if I have that wrong. I think you may have gone about this back to front - I'd work out the total length ...

Makes sense. So unless you have easy access to the cavity, your options for siting the fan are either inside the room, or outside, presumably in some sort of weatherproof enclosure.

Sorry to hear about your knee Sam, all the best for getting that sorted. These silencer dimensions look good, nice one. How many baffles will you fit in these? Glenn is correct about the location of that long pipe. What material will you be using for the correctly sited pipe by the way? I used 150mm...

Cheers Glenn, I'll have a look and see what I can find. On the upside, I've just checked the gaskets and the areas under greater compression are exhibiting a "memory effect", i.e. staying slightly compressed even when the door is open. They've only been on for 24 hours so it's possible the...