Double patio door

I recently ordered a door for the separation between the control and live room in one of the studios I am building. The door is 4 actual doors each with two pieces of glass and argon gas in between them. They are "energy saver" rated. I am going to put the order on hold because I found a wholesale source that might be able to get me the same amount of panels and doors for almost half the cost which would be a huge savings. I am not sure if the cheaper option is "double glazed" or has argon gas between each door's glass enclosures. I will be going to look at this cheaper option this week and was hoping you guys could offer some advice as to what to look for and what to avoid when using a double patio door for CR / Live room separation / line of sight. Part of me feels like throwing more money at it would mean a more energy and potentially sound efficient door. Then again I could save a lot and allocate more money towards more important things if it would work. Thanks!

if you go with a good quality (Marvin, Pella, Anderson, etc) exterior grade suitable for high wind usage, they usually have something around an STC32-36 rating so a pair of those back-to-back (separated by say 6" or so) is going to be close to STC-45 but given most of those doors are dual panes, you will have a triple leaf effect so the total TL will be lower than just combining them. they're also probably going to cost about $2500 each (versus an acoustic speciality slider which could easily start at $5000).

Thanks. I think I may not have been clear enough. I was only planning to instal ONE patio door frame that will sit inside of two "double walls". Inside the frame there are 4 doors, two on each side. Each door has two glass panels on it. I have seen and worked in many studios and can not say I have ever seen two patio doors installed spaced from each-other. Always one large double patio door in my experience. Also this is for a voice / Foley room. No major low frequencies will be contending for a long period of time. Can I get away with this or will it be a nightmare? I have seen many studio with simply one double door installed. I appreciate that building the walls about a foot apart and placing two single doors on each wall will be effective. That was not considered and would involve a fairly large halt and modification of design plans. I am in quebec and have not heard of any of those brands. Sadly, those numbers are way out of budget as well. My only options are the 1,600 CAN for a double patio door (4 panels total, 2 panes of glass on each panel) EnergyStar rated with Argon gas from OMEGA doors http://www.omegawindows.ca/patio.html or the "same" equivalent, from a different local factory but I would only pay 900 as that is the warehouse price. I will be going to the factory to look at it. If it is equal quality then I will go with that one as opposed to spending an extra 700 for retail pricing. Or I could as you suggest change the design of the separating wall and place two single door patio doors 6" to a foot apart which would involve re-framing two already framed walls. Gah, now I am stumped about which way to go. I appreciate this though as I want to have things sorted out before moving forwards. Maybe I will change things up and go for two single patio doors spaced out a foot like suggested. Im all over the place. As I read in another post and wholeheartedly agree " God I wish I had designed this Studio properly before I started building...." Sincerely, MTLA

go with the fixed (large?) window and solid door arrangement. this will likely be much less expensive and you can more directly control the quality and costs.

The control and live room are small and the design really calls for the patio door. I went the high road and bought two single patio doors that are energystar and each have double glass and air (with argon) in between, so 4 panes of glass ultimately and going to put 6"- 1" depending on how much I can push it between each door. Thanks guys!