[rcag_ils]

We built this house not too long ago and has no plan to finish the basement any time soon, that leave a rather huge space unused.

I am looking for advice on how to make it acoustically suitable for a music room without spending a fortune. Now it's basically has no ceiling panel, no sheetrock wall, a concrete floor, a concrete back wall from a poured foundation, a picture window and a glass patio door on a same side, and rather long in shape.

Thanks

[bpape]

There are lots of things you can do between DIY and pre-made that can help quite a bit.  If you could post a top view sketch of the room and/or some pics so we can get a better feel for the layout, that would help quite a bit.

Bryan

[rcag_ils]

Thanks for the response, I'll post some pics in a week or so, my digital camera broke.

I've seen some rooms with that warehouse, industrial interior look, therefore I got the idea that a sound room need not to be like a finished room if I can tame the reflection.

[JLM]

To reduce echo try to avoid room dimensions that are double (or any multiples) of each other.  The best ratios are 1 x 1.61 x 2.61.

Maximize room size, keeping as close to the above ratios as possible (bigger reduces room interactions).

Without a ceiling or walls sound is going to transfer upstairs.  (I pulled a drop ceiling out of a finished basement and sound transmission went up greatly.)

Without walls, you'll hear the furnace, air conditioner, gas/propane water heater, softner, etc.


I used lined/insulated flexible ductwork to cut furnace/air conditioning noise.

I also used insulated staggered stud walls and an insulated fiberglass exterior door with weather seal.

I just laid pad/carpet on the concrete.

My only mistakes were using recessed can lights (even though the ceiling space is insulated, it still transmits sound) and not suspending the ceiling to allow it to "float" from the structure above (builder finked out and wouldn't do it).

[Bob in St. Louis]

and not suspending the ceiling to allow it to "float" from the structure above (builder finked out and wouldn't do it).

Ditto that.
Physical contact with the rest of the house is the best way to transmit what you're hearing to the rest of the house. 
Bad. 

[rcag_ils]

I kind of think there's no way to stop any sound from being transmitted upstairs even with ceiling. I am hoping my family members will compromise and tolerate my hobby.

My old house has a finished basement, and the sound of the furnace/AC still come through, because the other side (the utility room) has no wall.

I am thinking ducttape some pink foam panels for a quick and easy set-up, then come up with something to make it look better.