Bose PANARAY 620M Manual de serviço - Página 15

Procurar online ou descarregar pdf Manual de serviço para Altifalantes Bose PANARAY 620M. Bose PANARAY 620M 21 páginas. Multi-position floor array
Também para Bose PANARAY 620M: Manual de instalação (4 páginas)

Imprimir página

1. Phase Test

1.1 Observing polarity, momentarily apply a

12VDC level to pin 1+ and 1- of the Neutrik

NL4 connector.

1.2 While applying the DC voltage, observe

the drivers. They should all move outward

when the voltage is applied. Correct the

wiring on any drivers that move inward

instead of outward during this test.

2. Rub and Tick Test

2.1 Apply a 10Hz, 20Vrms signal directly to

the terminals of the driver under test. Refer

to the disassembly procedures in this

manual for the speaker under test to find out

how to remove the driver.

2.2 Listen for any extraneous noises such as

rubbing, scraping or ticking.

Note: To distinguish between normal sus-

pension noise and rubs or ticks, displace the

cone slightly with your fingers. If the noise

stays the same, it is normal suspension

noise and the driver is fine. Suspension

noise will not be heard with program mate-

rial.

TEST PROCEDURES

3. System Sweep Test

3.1 Apply a 10Hz, 20Vrms (310M speaker)

or 30Vrms (620M speaker) signal to pin 1+

and pin 1- of the Neutrik NL4 connector.

3.2 Sweep the audio signal generator from

10Hz up to 70Hz.

3.3 Verify that there are no extraneous

noises such as buzzes or rattles.

4. Air Leak Test

4.1 Apply a 70Hz, 20Vrms (310M speaker)

or 30Vrms (620M speaker) signal to pin 1+

and pin 1- of the Neutrik NL4 connector.

4.2 Listen for any air leaks around the rear

panel, input panel, woofer and handles.