Re: Help with Planning & Building of my Recording Studio
Posted: Wed Dec 12, 2018 7:19 am
Hi everyone!
Can't believe it's already been close to a year since I’ve last posted about my build but good thing is I’m back at it!
I’ve had to put the studio on hold so that I could focus on other projects around the house but a big reason was also because I needed to take a step back and put more work and thought into the planning and design phase. I had done a lot of reading on designing an HVAC system for a studio but unfortunately even with all this reading and research, I still have some questions related to that. More specifically with getting Fresh Air into my two rooms as well as figuring out the size of my silencer boxes. Here are a few issues/questions that I have:
1) Starting with the Fresh Air issue, from what I’ve been able to gather, I should aim to have 25% to 30% of fresh air introduced into my duct system. To give a bit of context, the studio is located above my garage and has its own AHU. The rest of the house has its own AHU with built in HRV unit. What I’m trying to figure out is since my house already has a HRV unit I’d ultimately want to try and piggyback off of it in order to get my fresh air into my studio. Is that something that can be done?
2) Since having an HRV means having an extra take-off on the supply and on the return ducts….would there need to be silencer boxes for those too?
3) About my systems Total Equivalent Length, I’ve been able figure out a lot of math for the design but I’m wondering if the EL should include the restriction of the silencer boxes or not. Like does the total EL include the silencer boxes or up until the silencer box input? If the total EL should be with the silencer boxes….I’d like to know how to add that up to the total. This brings up my next question.
4) Knowing how much CFM needed for each room…how can I figure out the sizes of the boxes? I know that the boxes should have at least 3 baffles and should have double the volume of the input so say I have a 6” round metal duct going in the box, the pathway of the box should be double the volume all the way through the output correct? I’m just wondering how and/or what determines the size of the box. Based on my CFM requirements for the LR (185 CFM) and CR (142 CFM ) I was figuring that 4 x 6” round ducts (flex) should suffice per room. (2x supply and 2x returns). This would be pre-silencer boxes. Looks like a 6” round duct should be good for approx. 100cfm.
I’m going to stop here for now and hope that someone will chime in on this and give me some feedback and hopefully that will be enough for me to keep plugging my numbers into my design and start planning the sizing of the silencer boxes and plan to make enough room above my rooms to put them on. I’ve got all kinds of number already if I’m missing anything please let me know and I’ll gladly share.
Cheers and Thanks in advance!!
Can't believe it's already been close to a year since I’ve last posted about my build but good thing is I’m back at it!
I’ve had to put the studio on hold so that I could focus on other projects around the house but a big reason was also because I needed to take a step back and put more work and thought into the planning and design phase. I had done a lot of reading on designing an HVAC system for a studio but unfortunately even with all this reading and research, I still have some questions related to that. More specifically with getting Fresh Air into my two rooms as well as figuring out the size of my silencer boxes. Here are a few issues/questions that I have:
1) Starting with the Fresh Air issue, from what I’ve been able to gather, I should aim to have 25% to 30% of fresh air introduced into my duct system. To give a bit of context, the studio is located above my garage and has its own AHU. The rest of the house has its own AHU with built in HRV unit. What I’m trying to figure out is since my house already has a HRV unit I’d ultimately want to try and piggyback off of it in order to get my fresh air into my studio. Is that something that can be done?
2) Since having an HRV means having an extra take-off on the supply and on the return ducts….would there need to be silencer boxes for those too?
3) About my systems Total Equivalent Length, I’ve been able figure out a lot of math for the design but I’m wondering if the EL should include the restriction of the silencer boxes or not. Like does the total EL include the silencer boxes or up until the silencer box input? If the total EL should be with the silencer boxes….I’d like to know how to add that up to the total. This brings up my next question.
4) Knowing how much CFM needed for each room…how can I figure out the sizes of the boxes? I know that the boxes should have at least 3 baffles and should have double the volume of the input so say I have a 6” round metal duct going in the box, the pathway of the box should be double the volume all the way through the output correct? I’m just wondering how and/or what determines the size of the box. Based on my CFM requirements for the LR (185 CFM) and CR (142 CFM ) I was figuring that 4 x 6” round ducts (flex) should suffice per room. (2x supply and 2x returns). This would be pre-silencer boxes. Looks like a 6” round duct should be good for approx. 100cfm.
I’m going to stop here for now and hope that someone will chime in on this and give me some feedback and hopefully that will be enough for me to keep plugging my numbers into my design and start planning the sizing of the silencer boxes and plan to make enough room above my rooms to put them on. I’ve got all kinds of number already if I’m missing anything please let me know and I’ll gladly share.
Cheers and Thanks in advance!!