Assembly and Adjustments
Assembling the 45CC
The test fixture is partially assembled at the factory, but the user needs to mount the two
Ear
Plate Assemblies
in
Slots
in the fixture. As shown in Fig. 7 below, the ear plates have two long
Rods that can be pushed into the
Slots
and secured each with two screws from the rear.
Mounting the Ear Plate Assemblies
12mm
Back
Front
Guide
pin
0
+1
0
-10
5
5
A
0
+1
5
-1
5
0
+1
5
-1
5
4 mm Allen
Key
Note:
T
he positioning guides
must face downwards
On the rear: 4 Screws
for securing the ear
plate assemblies
Ear Plate Assembly
Positioning
Guide
Rod
with
Groove
for width indication
Slots
for the Rods
Scale
for width
indication
Fig. 7.
Mounting the ear plate assemblies in the text fixture.
If necessary, loosen the four screws on the back of the fixture. These are shown Fig. 3 on page
22. The distance between the ear plates can be adjusted from 130 to 170 mm. Two mm
Scales
on the fixture and a
Groove
on each of the rods are used to set the position.
Slide in the
Ear Plate Assemblies
with the headphone Positioning Guides facing downwards.
3.
Tighten the four screws on the back of the unit.
Instruction Manual
GRAS 45CC Headphone Test Fixture | 2 5
