From: David Chertock <ap412@x??x.xxxx
Date: Thu Dec 9, 1999 9:15 am
Subject: Garage Studio Design
A .jpg floor plan of the garage studio design I'm working on has been
uploaded to :
I need to solicit bids from contractors, so I had an architect familiar
with soundproofing draw me up some plans. I gave him my own crude
drawing to work from, and while he got a few things wrong, this is
basically the floorplan I ordered. I was lucky because he had all the
complex details of studio building (wall, windows, doors, etc.) on file
in his computer from similiar projects. I wanted to present the design
to this list and perhaps an acoustician, and then have revisions made.
First off the dimensions got cropped off the scanned image. The inner
lengths of the side walls are 18'-7 1/2". The bottom inner wall length
is 22'-3 1/2 inches. As I drew in by hand, there will be a window on
both sides of the mix position, and the windows will be more toward the
center of the room that they are in the picture.
Some basic choices reflected spatial concerns as opposed to acoustical
ïThe 7'-6 1/2" length of the sound lock/machine room and iso booth is
merely whats left over after you put a Hammond, a Rhodes, and an open
three foot door against the wall.
ïI'm going to mount a 32" TV to the front wall. My eyes need to be about
5' from the tv screen. There is my mix position.
ïI decided against a separate tracking room because there just isn't
enough space in a garage to make 2 rooms that work. Also, I basically
need a decent space for my audio post clients to sit down.
Here are my questions:
ï Can anyone tell what the optimum angle for the splayed walls might
be? As drawn, the walls just accomidate an existing door and the space
necessary for a new 3 foot door in the sound lock/machine room. This
angle could be cut in a little wider making the sound lock and iso booth
a little larger. The only way I can figure out of surely finding a good
angle is to make a mock up of the room with cardboard, and do the mirror
along the wall trick, moving the cardboard walls until I can't see the
speakers. I took geometry a long time ago and I didn't like it. Help.
ï Will the windows on the splayed walls give me trouble with early
reflections? The architect seemed to think they would be a problem, but
I thought if they were splayed correctly, highly reflective windows
would only screw up the sound for my clients behind me. Although the
architect drew 703 along the back wall, I actually want a diffuser on
the back wall, and 703 lining the front. That is the LEDE style, right?
If the windows are a problem, I want to build 703 inserts to plug the
windows with when I'm mixing.
ï The iso room is a bit wider than the sound lock. What this means is
that the back of the control room is not symetrical. It is 22" inches
deeper on the iso room side. Will this give me bad stereo imaging at the
mix position? Will it if the side walls are lined with 703? The walls
will already be lined with irregular shaped objects; the sound lock side
will have the Hammond and Rhodes, and the iso room side will have a wall
of guitar amps.
ï If the 22" deeper side poses a threat to my acoustical health, I have
considered building a 22" closet to make the room symetrical (see the
hand drawn lines). Its pretty valuable real estate to give up, but I
certainly do need the storage (foley props as well as general music
junk). On the other hand, a bass amp will just rattle that stuff all
over the place. So, do you think with this kind of Bozo design that I
really need to worry about assymetry? The props can go in a $160 shed
from Home Depot.
ï Should the side walls be offset to prevent standing waves? Even if
they are coated with 703? If so, how far do I need to skew them?
ï Do the doors of the sound lock and iso room have to be skewed to
prevent standing waves with the back wall? If so, would it be better to
have the back wall of the studio a little offset where the sound lock
and iso booth are (I was only planning a diffuser in the middle).
ï Will this room ever sound any good at all?
ï How did I ever have any fun in my untreated extra bedrooms?
Thank you for taking the time to look at this, and thanks in advance for