Ventilation help needed

Hi all, I am hoping someone can help with a basic ventilation set-up for our studio , (for further information see this link) http://www.johnlsayers.com/phpBB2/viewtopic.php?t=10177 We had originally planned to use a whole house extraction unit manufactured by Manrose, this system uses a single fan to extract air from up to 5 areas with individual control of flow from each area. The unit has a quiet operation spec ( 31 - 48 db) and we intended to install it in one of the now closed up doorways using isolation hangers from the door header. The rooms we are building the studio in have ventialtion inlets which we intended to use for the fresh air supply. At least that was the plan until while searching on the forum I noticed a thread in which Rod advised on a system where air is blown into the room instead of being extracted from the room. Basically we have went back to the drawing board and are wondering if we use plenum boxes could we still go with our original plan or is there a simpler ( and less expensive) way we can do this. Thank you in anticipation of your replies, Clunk

Having had no replies to my last post on this and still in need of help I thought I would post a link to some useful reading I have found on ventilation systems. Anyone else trying to understand how this whole ventilation thing works might find this useful. http://www.vent-axia.com/knowledge/hand ... ction1.asp Anyway back to my research.Good luck

clunk wrote:

Having had no replies to my last post on this and still in need of help...

Rod gave you his advice. He is an expert. If you want another opinion you can pay him $200/hr to consult on your project and get the same same advice in the form of a professional recommendation. :D Andre

Andre wrote : Rod gave you his advice. He is an expert. If you want another opinion you can pay him $200/hr to consult on your project and get the same same advice in the form of a professional recommendation. 1. When did Rod give me his advice other than through his book or through the threads that I have researched here, did I miss something? 2. I have been working without pay for 3 months now while I construct a studio that I hope will one day pay for itself, I am putting considerable effort into this and cannot afford professional advice thus like many others I come to this forum for help, not to be insulted. 3. Have I somewhere along the way insulted you or someone else on this forum, have I missed something or are you really going senile? 4. I posted a reply to my original thread because I had found what I thought was a useful guide on Ventilation systems for people like myself who know nothing about the subject and I want to help others, do you have a problem with that or do you only live to try and be a smart ass.? By the way Andre I am a bit more annoyed at seeing this from a contributor to the forum such as yourself, I realise that most of the time you try to help people but in this case I think you are wrong in your approach, I genuinely need help setting up a ventilation system and genuinely cannot afford to get that help from professionals at the moment, i had worked out a system and when I read Rods reply to another forum member it threw me into a bit of a panic, has stalled work on the studio for 2 weeks and is still causing me grief, so let up whatever it is you have and offer some help if you can. Clunk

Clunk Lou's studio build (located in Other Studio's) has a couple of diagrams which his pro builder allowed him to publish, that shows a multi room air con setup. In our geography, there is not much DIY knowledge on subject and to be honest, even when i approached a local guy who did a site survey of my 1 room garden studio, it was obvious to me that the best advice was on this forum. Persoanlly, i've tried to follow as much of Rod's advice as i can from his book and a number of excellent posts on this forum and recording.org. Bottom line is you will need cooling and fresh air, whilst not forgetting that if you built it right, its going to need to be pressure balanced. btw I've spent the last year researching everything i can, so am not an expert but those are the key areas. FWIW, i did a garage conversion a few years ago and didnt adhere to any of the great advice about construction techniqies and ventilation i've since found here, but I can tell you this...Its way too hot even in winter inside the room, and humidity in the room actually warped the wood on a standup bass i had in there :wink:

Hi John, thanks very much I had looked at Lou's studio build but never reached the air con part, knowing theres some info there is a great help, also hearing of your experience with humidity means we will take this matter very seriously, to be honest I hadn't thought it such a problem in the UK until your reply, again thanks, all the best Clunk

I apologize for my poor wording in the first sentence of my first post. I had written "Rod gave you his advice" where I should have written "You have Rod's advice" referring to what you had read in another thread. The point being that you have the free recommendations of professional and are ignoring it. On a positive note, the links to the products that you gave are great! Good studio building is 90% design and 10% construction. Delay as long as necessary to get all the details right. I may be senile, but those nurses are great! Andre

Andre I think you totally misunderstood my post and my reason for posting in the first place, the fact was having read the thread in which Rod advised another forum member to use a positive pressure system we went back to the drawing board. The point being that I was not ignoring the advice he gave, in fact the total opposite, I was looking for clarification on whether a whole studio ventilation system could be operated from a single fan (Rods advice related to a booth ventilation system). If I had ignored the advice I would have built the system already instead I spent the best part of the past 2 weeks carring out further searches on the internet and through this forum to find ways of following Rods advice. I very much appreciate the help that is on offer here and if you look at my studio build thread you will see that there have been many changes to our original plans, all of these are as a result of having bought Rods book and reading I have done on this forum. I also see my participation in this forum as a process in which I will try and share the knowledge I have gained, not just one where I take advice and throw it away. If my first post conveyed the wrong message I apologise but I was asking for help in relation to this not diving in and asking where I went wrong afterwards. I still haven't finalised plans for the system but I know somewhere to look for the answers I require thanks to Johnp, when I finish the design of the system I will post it here. By the way you couldn't send one of your nurses over to me I could do with a little extra help, all the best Clunk

Ok, having spent some more time researching and discussing the set-up we have a basic set-up plan, though I should say there are still some issues unresolved. Our plan is to use an 8" in-line duct fan to push air into the control room and vocal booth via insulated ducting. The fan will be placed in a box measuring 2' , 3' , 3' , built into the upper-right hand doorway, an 8" duct will be run from the fan to a splitter box from which 3* 6" ducts will travel to baffle boxes ( 12" x 10" x 32" ) with 12" x 12" openings into the rooms ( 2 boxes into the control room, one to the vocal booth). The exhaust side of the system will travel via baffle boxes and ducting to the wall vents as per diagram below. A similar set-up will be used in the tracking area, with only 2 baffle boxes for the intake and 2 for the exhaust. The baffle boxes have already been made, the ducting and fans have also been ordered. The fan we have ordered can be used for either exhaust or intake so all we have to decide is which way the system will run ie: Do we use the fan to pull air through the system or do we use it to push air through Any suggestions on this would be appreciated.

what model fan are your proposing to use?

Hi Glenn we have ordered 2 Hydor HIT 200mm in-line centrifugal fans, not our first choice but all our budget allows at the moment. It delivers the volume we require but is a little noisy so we are building a box to house the fan and provide the necessary isolation. Heres a link to the fans specs page : http://www.hygienesuppliesdirect.com/pr ... s_Spec.pdf Thanks for your interest, all the best Clunk