EFFECTIVE RESPONSE AT 0 DEGREE INCIDENCE

SIDES (2)

TOP AND BOTTOM (2)

BRACES (3)

610 mm

[2'] 102 mm

[4"]

19 mm

[3/4"]

19 mm

[3/4"]

51 mm

[2"]

610 mm

[2']

2438 mm

[8'] 102 mm

[4"]

19 mm

[3/4"]

2438

mm

[8']

648 mm

[2'-1 1/2"]

102 mm

[4"]A

A

A-A (1:8)

LIGHTWEIGHTFIBERGLASSINSULATION

POLYESTERDACRON

RIGIDFIBERGLASS

ISOMETRIC VIEW

ISOMETRIC CUT-AWAY VIEW6 mm

[1/4"]

94 mm

[3 11/16"]

614

mm

[2'-0

3/1

6"]

1210

mm

[3'-1

1 5/

8"]

1219

mm

[4']

LIGHTWEIGHTFIBERGLASSINSULATION*

POLYESTERDACRON

103 mm

[4 1/16"]

52 mm

[2 1/16"]

35 mm

[1 3/8"]

R7 mm [R1/4"]

24 mm

[15/16"]

11 mm

[7/16"]

2 mm

[1/16"]

7 mm

[5/16"]

25 mm

[1"]

PARTS LAYOUT

101

A

B

C

D

E

2 3 4 5 6 7 8 9

A

B

C

D

E

101 2 3 4 5 6 7 8 9

Project Date:Job No :

Drafter : Date :

Drafter : Date :

Drafter : Date :

Revision/Issue : Date :

Revision/Issue : Date :

Sheet :

John H. Brandt

Reco

rdin

g St

udio

,Pe

rfor

man

ce H

all,

&Ar

chite

ctur

al A

cous

tics

Cons

ulta

nts

JH

BRANDT

THIS DRAWING IS PROPERTY OF

AND AS AN INSTRUMENT OFSERVICE, MAY NOT BE ALTERED,REPRODUCED, COPIED OR USEDFOR CONSTRUCTION WITHOUTTHE WRITTEN PERMISSION OF

JH BRANDT.© 2020 all rights reserved.

Recording Studio,Performance Hall, &

Architectural AcousticsConsultantsJH

BRAN

DT

This drawing is to be printed onstandard A1 paper: 594 mm X 841 mm-if not, DO NOT SCALE-

Scale Metric:

10864 05/25/2020

Sum

mar

econ

Bek

asi,

Clu

ster

Lot

us, I

A 20

t

el: +

62 2

1 29

5 73

4 88

/ +6

2 82

1 77

77 1

978

Beka

si, W

est J

ava,

Indo

nesi

aem

ail:

john

@jh

bran

dt.n

et

w

eb s

ite:

http

://w

ww

.jhbr

andt

.net

10/13/2020

104

2of1

1 : 8

*Owens Corning R19 - R31, or similar. 10 - 15 kg/m3 density

5020 100 200 500 1000 2000 5000 10000 200000

0.2

0.4

0.6

0.8

1

Abso

rptio

n C

oeffi

cien

t

Frequency (Hz)

0.7

TYPICAL DOWELING

ALL TREATMENT IS ASSEMBLED USING DOWEL AND GLUE METHOD

1. ASSEMBLE TOP, BOTTOM, AND SIDESUSING DOWELS AND GLUE. MAKE SURETHE THE UNIT IS 'SQUARE' (90 DEGREECORNERS).

2. ATTACH FABRIC TO THE INSIDE OF THEFRAME USING UPHOLSTERERS TAPE ORTHIN STRIPS OF PLYWOOD.

3. ADD CENTER FRONT BRACE 4. ADD 14" (6 mm) DACRON / POLYESTERBATTING AGAINST FRONT FABRIC

5. ADD REAR BRACING

7. COVER THE BACK OF THE UNIT WITHINEXPENSIVE TICKING FABRIC TO KEEPTHE COMPONENTS STABLE DURINGSHIPPING AND INSTALLATION.

25 mm

[1"] 13 mm

[1/2"]

10 mm

[3/8"]

Ø10 mm [Ø3/8"]

PIECE WITH DOWELHOLES (TYPICAL)

METAL CLIPS (3 sets REQUIRED)

SEE: Side-Panel Clamps and Doweling.pdf

SEE: Side-Panel Clamps and Doweling.pdf

TOP & BOTTOM

SIDES

BRACE

6. INSTALL LIGHTWEIGHT FIBERGLASS FILL

ASSEMBLY

101

A

B

C

D

E

2 3 4 5 6 7 8 9

A

B

C

D

E

101 2 3 4 5 6 7 8 9

Project Date:Job No :

Drafter : Date :

Drafter : Date :

Drafter : Date :

Revision/Issue : Date :

Revision/Issue : Date :

Sheet :

John H. Brandt

Reco

rdin

g St

udio

,Pe

rfor

man

ce H

all,

&Ar

chite

ctur

al A

cous

tics

Cons

ulta

nts

JH

BRANDT

THIS DRAWING IS PROPERTY OF

AND AS AN INSTRUMENT OFSERVICE, MAY NOT BE ALTERED,REPRODUCED, COPIED OR USEDFOR CONSTRUCTION WITHOUTTHE WRITTEN PERMISSION OF

JH BRANDT.© 2020 all rights reserved.

Recording Studio,Performance Hall, &

Architectural AcousticsConsultantsJH

BRAN

DT

This drawing is to be printed onstandard A1 paper: 594 mm X 841 mm-if not, DO NOT SCALE-

Scale Metric:

10864 05/25/2020

Sum

mar

econ

Bek

asi,

Clu

ster

Lot

us, I

A 20

t

el: +

62 2

1 29

5 73

4 88

/ +6

2 82

1 77

77 1

978

Beka

si, W

est J

ava,

Indo

nesi

aem

ail:

john

@jh

bran

dt.n

et

w

eb s

ite:

http

://w

ww

.jhbr

andt

.net

10/13/2020

104

2of2

1 : 8