PA Tech QSM-60V User manual

USER MANUAL
QSM-60V
PRE-Mixer AMPLIFIER

1.Security Precautions
◎ Carefully to READ the instruction in this manual before use.
◎ Certainly to OBSERVE the INSTRUCTION in this manual regard convention of safety
symbols and messages
◎ Please KEEP this user MANUAL nearby for anytime reference.
Safety symbol and Message Conventions
Below-described safety symbol and messages are to prevent bodily injury and property
damage. Before operating the amplifier, read this manual first so you completely knowing
the potential safety hazard and understanding the meaning of the safety symbols and
messages.
WARNING
Indicates a potentially hazardous situation, which, if
mishandled, could result in death or serious body
injury, and/or property damage.
CAUTION
Indicates a potentially hazardous situation, which, if
mishandled, could result in moderate or minor body
injury, and/or property damage.
PANEL DESCRIPTION
■ When Installing the Amplifier
 DO NOT installing or mounting the amplifier in unstable locations, such as on the
rickety table or the slanted surface. It may result in the amplifier falling down and
causing body injury and/or property damage.
 Be sure to ground to the safety ground (earth) terminal to avoid electric shock.
Never to ground to a gas pipe for tragic disaster may occur.
 Use the amplifier only with the voltage specified on the amplifier. Using the voltage
higher than specified may cause fire or electric shock.
 DO NOT cut, twist, damage, nor modify the power supply cord. In addition, avoid
using the power cord close to heaters, and don’t place heavy object, including the
amplifier itself, on the power cord, for it may cause fire or electric shock.
 DO NOT expose the amplifier to rain or the environment where it may be splashed
by water or other liquids, for doing so, it may cause fire or electric shock.
WARNING

 When using the Amplifier
 When found following irregular situation during amplifier is in use, immediately switch off
the power, disconnect the power supply plug from the AC outlet. Don’t try to operate
the amplifier again. Contact your local dealer to check the amplifier.
 The amplifier falls.
 Amplifier is malfunction.
 Water or any metallic object gets into the amplifier.
 The smoke or strange smell coming from the amplifier.
 The power supply cord is damaged, such as exposure of the core, disconnection
etc..
 DO NOT put cups, bowls, or other containers with liquid or metallic object in it on the
top of the amplifier. If they spill accidentally into the amplifier, it may result in fire or
electric shock.
 DO NOT touch the power supply plug during thundering and lightning, for it may result
in electric shock.
 DO NOT insert or drop the metallic objects or flammable materials into the ventilation
slots of the amplifier, for it may result in fire or electric shock.
 DO NOT open nor remove the amplifier cover to prevent fire or electric shock, for
there are high voltage components inside the amplifier.
PANEL DESCRIPTION
■ When Installing the Amplifier
 DO NOT remove nor plug in the power supply plug with wet hands, for it may cause
electric shock.
 When unplug the power supply cord, be sure to grasp the power supply plug. DO
NOT pull on the cord itself. Operating the amplifier with damaged power supply cord
may cause fire or electric shock.
 Avoid installing the amplifier in humid or dusty places, the area exposed to the direct
sunlight, locations generating smoke or steam, or the spot near the heaters. It may
result in fire or electric shock.
 When moving the amplifier, be sure to remove its power supply cord from the wall
outlet. Moving the amplifier with the power cord connected to the outlet may cause
damage to the power cord, and resulting in fire or electric shock. When removing the
power cord, be sure to grasp its plug to pull.
 DO NOT block the ventilation slots of the amplifier chassis. It will cause the
temperature rising and result in fire.
CAUTION

■ When Using the Amplifier
 Make sure that the volume control is turned to minimum position before power is
switched on. Loud sound produced at high volume when power is switched on may
impair hearing.
 DO NOT place heavy objects on the amplifier, for it may cause it fall and may result in
body injury and/or property damage. Besides, the object itself may cause damaged
or body injury.
 DO NOT operate the amplifier for the extended period of time with the sound distorting.
It is an indication of malfunction, which can cause heat and result in fire.
 Switch the power off, and unplug the power supply plug from the AC outlet for safety
purposes, when cleaning or leaving the amplifier unused for 7 days or more. Fire or
electric shock may occur.
 If the dust accumulates on the power supply plug or in the wall AC outlet, fire may
result in. Clean it periodically. In addition, make sure the plug is inserted in the wall
outlet securely.
 Contact your local dealer to clean the dust, it the dust has accumulated in the amplifier
for a long period of time. Dust accumulation may result in fire or damage.
2. Description
QSM-60V is a versatile and convenient Pre-mixer Amplifier. It accepts 11 input sources
covering 5 MIC, 3 AUX, CD, Tuner, and Chime input.
Signal from MIC 1, MIC 2, and Chime will activate mute function, which will mute the signal
from other channels. The mute priority is Chime, MIC 1, and MIC 2.
It employs high performance circuit, that makes its S/N ratio is better than 65dB and less
than 0.1% of THD.
Besides AC power source, QSM-60V has DC 24V input power screw connector as backup
power source.
On the front panel, above each volume control, LED lights green to indicate input signal
source; and when the signal is over, it will light red.
QSM-60V is the ideal and convenient pre-mixer amplifier for multi-input source application.

3. Panel Description
Front Panel
1. MIC 1 Volume Control 11. CHIME Volume Control 21. CD LED Indicator
2. MIC 2 Volume Control 12. BASS Control 22. Tuner LED Indicator
3. MIC 3 Volume Control 13. TREBLE Control 23. AUX 1 LED Indicator
4. MIC 4 Volume Control 14. MASTER Volume Control
24. AUX 2 LED Indicator
5. MIC 5 Volume Control 15. Power On / Off switch 25. AUX 3 LED Indicator
6. CD Volume Control 16. MIC 1 LED Indicator 26. Chime LED Indicator
7. TUNER Volume Control 17. MIC 2 LED Indicator 27. Volume LED Indicator
8. AUX 1 Volume Control 18. MIC 3 LED Indicator 28. Power On LED Indicator
9. AUX 2 Volume Control 19. MIC 4 LED Indicator
10. AUX 3 Volume Control 20. MIC 5 LED Indicator
Rear Panel
1. Mains Power Input Socket 13. TUNER input
2. Power Fuse (for AC) 14. CD input
3. Earth Connection Screw 15. MIC 5 Phantom Power Switch
4. AC Voltage selection screw 16. MIC 5 input
5. DC Power Supply Terminals 17. MIC 4 Phantom Power Switch
6. Line Out (XLR) 18. MIC 4 input
7. Line Out 19. MIC 3 Phantom Power Switch
8. REC output 20. MIC 3 input
9. CHIME input 21. MIC 2 Phantom Power Switch
10. AUX 3 input 22. MIC 2 input
11. AUX 2 input 23. MIC 1 Phantom Power Switch
12. AUX 1 input 24. MIC 1 input

4. Features
 11 input channels: MIC x 5, AUX x 3, CD, Tuner, and Chime.
 Up to 3 mute priorities: Chime, MIC 1, MIC 2.
 2 power sources: AC 230/115V 50/60Hz and DC 24V.
 2-color LED indicator for each input signal. Green is normal input, red is clipping.
 Master volume, Bass, and Treble control for the output.
 Record output
 1U height
 19” rack.
5. Power Source
 AC Power Source
The supply transformer has been designed for use AC 115V/230V(±10%) 60/50 Hz. Use
Voltage selection screw switch to select the voltage you want.
 DC Power Source
Battery Connection (24Vdc)
When using external batteries, ground the amplifier via the screw terminal. (Electrical
stability of the system will be improved by providing a good earth ground.) When
connecting batteries, please ensure correct polarity.
6. Connection
 Microphone Connection
Mic1~5 inputs are XLR jack.
 CD , Aux, Tuner, and Chime Connection (Input)
CD, Aux, Tuner, and Chime are dual RCA jack and has a stereo to mono converter.
SLEEVE
PIN
RCA plug connector
 Line out & Record out Connection
XLR and RCA jacks are provided for Line out. Connect for the jack that matches your
equipment. Record out is for the demand of recording. Connect it to the input of the
recorder.

7. Specification
Model QSM-60V
Type Pre-Mixer Amplifier
Power Source AC 115V/230V 50/60 Hz, DC 24V
Frequency Response 20Hz ~ 20KHz
Total Harmonic Distortion ≦1% @ 1KHZ
Input Sensitivity MIC 1 ~5: 1mV @600Ω, Balanced
(with Phantom power switch)
AUX 1 ~3: 150mV @1KΩ,Unbalanced
CD: 150mV @1KΩ, Unbalanced
Tuner: 150mV @1KΩ,Unbalanced
Chime: 1 V @10KΩ,Unbalanced
Output Sensitivity Line Out: 1V @100Ω, Balanced
Record Out: 1V @100Ω, Unbalanced
Mute Priority Chime, MIC 1, MIC 2.
Tone Control Bass 100HZ +/- 10 db
Treble 10KHZ +/- 10 dB
Power Consumption AC 9.5W @ Rated Power
DC 1A @ Rated Power
Dimension 44(H) x 483(W) x 185(D) mm
Weight 4 kgs
Mounting 19” rack