[Gus_19]

Just out of curiosity, I will be installing drywall in my drum room shortly. My question is, how can I properly, but efficiently install the gange boxes since the notches on them normally are for just one sheet of 1/2" drywall as I will be using green glue to install 2 sheets of 5/8" drywall together and up on the framing?

[tkrussell]

Use extension rings. There are various ones available, here is one style:

Box Extenders

[Stratmando]

Personally, I hate gang boxes for new construction.
If you have a little extra money, you could use 1900 boxes(4"X4") and a 1 1/4" Mud Ring.
Before drywall goes In, Consider speaker wiring, alarm, phone, computer, innercomm, antenna, plumbing, etc. It doesn't get easier or cheaper to do than before drywall.
What is "Green Glue"? For Sound absorption?

[stanfortyman]

I assume you mean non-metallic nail-on boxes.

Just bring them out as far as they will go and still be able to nail on the stud and use the rings TK listed. I bet you can get real close to the 1-1/4" that you need.

If you prefer to use metal boxes then use Strat's reply.

[Missouri Bound]

All right... someone has to be the pain in the... just why would anyone use dbl. drywall for any purpose? Seems like a waste of resources to me. Rigidity can be accomplished by many other ways as well as soundproofing.

[Gus_19]

The reason for the dbl drywall, if you would've read in my original post, is to properly apply the 'green glue'

[tkrussell]

Sometimes,

why would anyone use dbl. drywall for any purpose?

Double drywall is needed to achieve a proper fire resistance rating,but usually in commercial applications.

Does not apply here. I am not sure what green glue is or how related to soundproofing, but seems Gus knows what he is doing.

Gus can you explain what green glue is, and how it works for soundproofing?

[shader]

Copied from the sound isolation website "Green Glue can be used to soundproof walls, floors and ceilings. Use Green Glue in-between two sheets of drywall or any other porous, rigid building material. Green Glue works effectively against any impact or airborne noise control problem." As gus posted, he is doing this for his "drum room"-drums are VERY noisy when practiced on and can be heard all over the house unless isolated/insulated.

[tkrussell]

Neat stuff:

Green Glue is your soundproofing and noise reduction material

Now why can't I think of something like this?

Sure beats the traditional construction methods for soundproofing.

Speaking of green, I ever mention I thought of the Greenie wirenut? Not necessarily the color, but with a hole in it, five years before it came out. Really sucks being lazy and no foresight.

[Gus_19]

Through all my research and limitations on budget, I have decided to go with green glue for it's ability to essentially absorb the low frequencies created by my drums. Green glue, when properly applied in between the sheets of drywall is very sticky, but after 2-4 weeks, finally cures into a harder, yet flexible substance. When sound vibrations travel the airway and vibrate off the drywall, it turns the "noise" into heat, helping absorb the sounds from traveling into other rooms. There are a bunch of other items out there on the web for soundproofing, but it's the LF that really kill you. Best way to describe is if you're sitting in a room and you can hear people talking in a room next to you, but all you can hear is low muffled voices. The reason is, the drywall, insulation, etc... has absorbed or blocked out the higher frequencies, but cannot stop the lows. Mainly below the 50hz range.

I'm not claiming to be an expert or anything on this. I'll be very curious and anxious to see how my research and prayers work, but am anxious to get rocking with my basement, including my drum room. I hope to put together my own data and results on a webpage in hopes of helping other people out. Like most soundproofing material, it can get pretty pricey and fast. For the dimensions of my room, I'm figuring around $700 in just green glue, not to include the sheetrock.

Thanks for your advice with the gange boxes, a couple other guys had recommended I just have a make-shift adaptor for measuring the 1 1/4"'s out and installing the boxes that way.