Orientation... Gable roof.... best set up for acoustics on long or short wall?


I would appreciate your thoughts... we are building a house with a large gabled room above the garage to be our music room. The total dimension is 39' long 24' wide and 15' high at the ridge line of the gable. The slopes of the gable end at a 3' knee wall on the long sides with two 10' dormers opposite each other on the long walls. Picture a tent with two dormers on the sides. One end of the gable wall will have a window and the other end will have the stairs leading up from the garage and will have a bathroom and bar area at that end as well. 

This will leave a listening/music room area of 29'x24'. The ridge line is running down the center of the long dimension.

The listening area choices are:

1. setting up church style with the 24' width being constant and the seating from the end gable wall where the speakers are located would be roughly 20' (with flexibility to move forward or back for best sound). The two 10' gables would then open up on the left and right long walls as you face the speakers roughly at the listening area.

2. setting up the other direction facing a dormer in the front and one behind. On either side of the dormer the roof line would rise from the 3' nee wall to the center ridge line to 15' at the apex, then slope back down the other side. In this orientation the width would be 29' and the listening area would be around 16' from the front wall, again with some flexibility to move forward or backward. 

So really it is a choice of having the slanted walls on the side in the first case and  front and behind in the second scenario. Which way do you think would sound the best? 

I tried to attach a picture (rendering) but could not figure out how to make it happen. 

Much appreciated.

montbren

Currently my system consists of the Prima Luna HP Integrated, Border Patrol DAC and Viking Berlin horn speakers, which are incredible. I am contemplating, due to the room size, selling the Berlin's and considering Pure Audio Project Classic or Quintet 15. My other thoughts are the Gershman Grande Avante Guard speakers and if I win the lottery, maybe the Volti Vittora's. I am exploring the Lyngdorf line of  amps as well, as I hear so many good things about their room correction feature. However, I do love the tube sound of the Prima Luna with the option to switch from Ultra Linear to Triode with the press of the remote. I have both the standard EL 34's and the KT150's. Fun hobby.... costs about the same as a pool... but it can travel with ya when you move. Cheers

@montbren 

I'm glad I could help. FWIW a 12/12 pitch simply means that for every 12 inches horizontally the roof will rise 12 inches vertically. An 8/12 pitch will rise 8 inches and so on. I would also recommend that you make provisions to get the hot air out of the attic space above your room. It is basically a Cape Cod design which have a tendency to get very hot in upstairs rooms in the hot summer. I suspect you will need a fan  in the gable to evacuate the hot air along with the standard ridge & soffit  vents. This comes from my time living in a cape cod type house with room upstairs. Otherwise, enjoy the journey. You will have a nice space. OH I like my tubes also 😉

Hey There, thank you again for your input. We will be using SIPS (structurally insulated panels) for the roof, so there will be no attic. The walls will be ICF. I am working with our HVAC guy on how best to make this space comfortable. Lots to consider. I really appreciate your insights and assistance. Cheers