Discovery Telecom DS-PA660 User manual

1
60W 6 Zones USB/SD/FM Mixer
Amplier
Key Features
DS-PA660
• Built-in MP3/Tuner/USB/SD card inputs
• 6 zones output with pre-amplifier, 6 channels @ 100V outputs
• 3 LINE& 2 MIC inputs with individual volume control
• Mute function, easy to insert priority broadcast
• Each zone with independent switch; bass and treble controlled
• With level indicators and 5-unit LED display
• Output short-circuit protection
DS-PA660 is a 60W 6 channel USB/SD/FM Mixer Amplifier for public address. It integrates 3
audio sources-USB, SD and FM and 6 channels. It has 2 microphone inputs and 3 extra aux
inputs, and Mic 1 is provided with priority and muting function. Bass and treble controls and
master volume control are provided. Complete protection includes short circuit and thermal
protection, current limiter and overloading. This amplifier can be applied to dierent cases,
such as supermarket, classroom, bank, church, school, hotel, restaurant, theme centers and
shopping center, etc.
Description

2
Specications
Model DS-PA660
Rated output 60W
Output regulation Less than 3dB
Speaker output 100V
AUX output 0dBV
Input Sensitivity Mic1,2 : 3mV(±0.5mV) unbalanced
Line 1,2,3 : 300mV(±30mV) unbalanced
Frequency response 65Hz-20kHz (±3dB)
Distortion Less than 1% at 1kHz , 1/3 rated output voltage
The ratio of signal to noise ratio Mic1 and 2 : Bigger than 80dB
Line 1, 2 and 3 Bigger than 80dB
Tone Bass : ±12dB at 100Hz
Treble : ±12dB at 10kHz
FM 87.5MHz-108.0MHz
MP3 Input Sensitivity 230-280mV
Protection AC fuse; DC voltage; overload; short-circuit.
Muting function Mic1 overrides other input signals with 0 ~ -30dB attenuation
Power requirements AC 220-240V/50-60Hz
Power consumption 100W
Dimensions 430×280×88mm
Gross weight 8.5kg
Net weight 7.2kg

3
Front Panel
1. MAIN POWER SWITCH (power indicator
lighting as ON state)
2.LED POWER INDICATOR (for main power)
3.ZONE ALL ON BUTTON
4.ZONE BUTTON OF SIX
5.LED LEVEL METER indicate output level
6.BASS CONTROL adjust bass response
7. TREBLE CONTROL adjust treble response
8.MP3/SD/TUNER OUTPUT VOLUME
CONTROL
9. LINE VOLUME CONTROL adjust Line input
volume
10. MIC VOLUME CONTROL adjust microphone
volume
11. MIC1 INPUT JACK connect to microphone
of unbalanced 30-600Ωwith 1/4” phone
plug and the muting function is activated
while the signal is sent to Mic 1
12. MP3/TUNER DISPLAY
13. MP3 USB INPUT JACK
14. MP3/TUNER PLAYER CONTROL BUTTON
15. SOUND OF OUTPUT SELECTOR BUTTON
16. MP3 SD JACK
NOTE: When all the five elements (+10dB) of the LED level meter remain lit, it indicates that
the sound is distorted. In such case, adjust each volume controlling knob, until LED element 4
(+8dB) and LED element 5 (+10dB) shall flashing.

4
Rear Panel
1. MUTE CONTROL adjust muting function
2.MIC2 INPUT connect to the microphones at unbalanced 30-600 Ωwith 1/4 “ phone plug and
the signals from Mic2 will be muted by the signal from Mic1
3.LINE 1 INPUT, LINE 2 INPUT & LINE 3 INPUT connect to linear source equipment
4.LINE OUTPUT connect a recorder
5.FAN EXHAUST WINDOW
6.6 ZONE OUTPUT TERMINALS connect to speakers
7. AC POWER CONNECTOR connect to AC power source
8.FM ANTENNA
Note:When connecting to speakers, use one pair of speaker output terminals only.

5
Connection Diagram