Bose PANARAY LT 9702 II Service-Handbuch - Seite 14

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High-Frequency -

Mid-Range -

High-Frequency +

Mid-Range +

IF THE JUMPERS ARE NOT USED

CONNECT TO THE TERMINAL BLOCK

ACCORDING TO THIS PIN LAY-OUT.

IF JUMPERS ARE USED

CONNECT TEST CABLES

HERE AT THE TERMINAL

BLOCK.

Figure 3. Connection Diagram

Note: Connect the cables to the terminal

block as shown in Figure 3.

1. Rub and Tick Test

1.1 Apply an 8Vrms, 10Hz signal to the

input terminals of the speaker.

1.2 No extraneous noise such as rubbing,

scraping or ticking should be heard.

2. Phase Test

2.1 Disconnect the connectors at the V-4

or M-10 terminals. Momentarily apply

1Vdc to the terminals. Observe polarity

when connecting the dc power supply. All

the drivers should move outward.

3. Frequency Power Sweep Test

3.1 Apply an 8Vrms, 10Hz signal to the

speaker input terminals.

3.2 Sweep the Loudspeaker from 10Hz to

2kHz.

3.3 Lower the applied voltage to 4Vrms

and sweep the loudspeaker from 1kHz to

5kHz.

3.4 Listen for any buzzes, rattles or other

extraneous noises from the loudspeaker.

TEST PROCEDURES

pin 1 +

pin 2 +

pin 1 -

pin 2 -

JUMPER