LY International Electronics PB4000 Manual de usuario

P.A.SERIES

Very Powerful Public Address Amplifiers

PB3000

PB3500

PB4000

Before operating, please read this manual completely.

FEATURES

 Transformer isolated 100V(200V), 70Vand 4Ω speaker outputs.

 5-element indicator for status display.

 XLR socket and 6.35mm jack for link convenient.

 Output sort-circuit protection & display.

 Various models of very powerful output available.

O W M E R ’ S M A N U A L

AMPLIFIER FRONT VIEW

1. AC power switch（1 is power on

and the “power LED” is on ) 5. PROT LED indicator (DC or

2. POWER LED indicator output circuit shorted indicator)

3. CLIP LED indicator (Please reduce 6. TEMP LED indicator

the gain to prevent severely clipped (high temperature indicator)

waveforms reaching the loudspeakers) 7. Unit’s fan exhaust window

4. SIGNAL LED indicator (Output level) 8. Volume (input attenuator)

AMPLIFIER REAR VIEW AND CONNECTIONS

1. fan intake window 7. XLR input

2. 100V output(PB4000:200V) 8. 6.35mm socket input

3. 70V output（PB4000:100V） 9. 6.35mm socket link

4. 4-16Ωoutput 10. XLR link

5. COM. output 11. AC power cord

6. 220V AC fuse

2 3 4

5 6

7 8

7 8 9 10 11

Pre Amp：

PB9811P

Another Amp：

PM series

2 3 4 5 6

Note:

Never connect the “hot” terminals together.

When connecting load (speakers), it is better to use one pair of output terminals only.

OPERATING PRECAUTIONS

 Make sure the AC mains voltage is correct and is the same as that printed on the rear of the amplifier.

 Damage caused by connecting the amplifier to improper AC voltage is not covered by the three-year

US warranty. Make sure the power switch is off before making any input or output connections.

 It is always a good idea to have the gain controls turned down during power-up to prevent speaker

damage if there is a high signal level at the inputs.

INPUT CONNECTING

Input connections are made via either the 3-pin XLR-type

connectors (Figure 1) or 6.35mm sockets on the rear side

of the amplifier.

OUTPUT CONNECTING

Load can be connected using banana plugs or spade lugs. A black binding post is considered “COM”, while

the three red binding posts are considered “hot”.

If the PROT Led goes on steadily and the buzzer sounds while power has been turned on and signal has

been fed, there must a trouble of output shorted. please turn it off and correct the trouble then turn it on

again.

ground signal

Figure 1 3-pin XLR-type connectors

Specifications

Model PB3000 PB3500 PB4000

Rated power 1000W 1500W 2000W

Input sensitivity 70V，100V(PB4000: 200V)

Ratio of signal to noise (A weighted) 90dB

Frequency response 80Hz-15kHz (±3dB)

distortion <0.5%(1kHz，1/3rated power)

indicators “POWER”，“CLIP”，“SIGNAL”，

“PORT” “TEMP”

protection Power turn on-turn off，High temperature，

DC voltage，short circuit limiting

Power requirement AC 220-240V/50-60Hz

Dimensions 482×480×132mm

Gross weight 33.5kg 38.5kg 42.5kg

Net weight 30kg 35kg 39kg

Specifications are subject to be changed without notice.

LY International Electronics Co., Ltd.

CAUTION

● When the “Power switcher”

is off, please pull out the power cord from the socket. Please keep the

equipment out of water.

● To reduce the risk of electric shock, do not remove the cover.

● No user parts inside. Refer servicing to qualified service personnel.

Este manual sirve para los siguientes modelos

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