You don't need to remove the CRT. From the manual

1. Disconnect the short

speaker cable next to the

speaker.

2. Note: If you are certain

a speaker is faulty, the

easiest removal method

is to gently push the

speaker down in the

direction of the arrow.

This will bend the

biggest tab (there are

three tabs) that connects

the speaker to the

divider panel.

3. Twist the speaker back

and forth and slide it off

the divider panel.

The arrows in the pic point to the outside of the computer. Left to left, right to right

Wayne