PA Tech QSM-606E User manual

- 1 -
USER MANUAL
QSM-606E
QSM-612E
QSM-624E
MIXER AMPLIFIER

- 2 -
WARNING: THIS APPLIANCE MUST BE EARTHED
IMPORTANT
The wires in the mains lead are coloured
In accordance with the following code:
Green and Yellow: Earth (E)
Blue: Neutra (N)
Brown: Live (L)
As the colours of the wires in the mains
lead of this apparatus may not correspond
with the coloured markings identifying the
terminals in your plug proceed as follows:
The wire which is coloured green and
yellow must be connected to the terminal
which is marked with the letter N or
coloured black. The wire which is
marked with the letter Lor coloured red.
If a 13 Amp (B.S.1363) plug or any other
type of plug is used, a 5 Amp fuse must be
fitted either in the plug or at the
distribution board.
GENERAL INSTALLATION
DO NOT run microphone cables near mains, data, telephone or 70V line cables.
DO NOT run 100V line cable near data, telephone or other low voltage cables.
DO NOT exceed 90% of the amplifiers output power when using 70V line (speech
only).
DO NOT exceed 70% of the amplifiers output power when using 70V line (high
level background music).
DO NOT use re-entrant horn loudspeakers for background music unless the loudspeaker has been
specifically designed for this purpose.
AVOID jointing the microphone cable, when this is unavoidable make sure a good
screened connector is used, e.g. Phono.
ALWAYS use a unbalanced or floating low impedance microphone terminating into a
unbalanced input on long microphone cable runs.
ALWAYS use a mains grade double insulated cable for the loudspeaker cable runs.
ENSURE that all loudspeakers are in-phase.
ENSURE that there are no short circuits on the loudspeaker line before connecting to
the amplifier.
(1)

- 3 -
QSM-6xxE AMP 60W/120W/240W Mixer Amplifier
FRONT PANEL
1. Channel 1 Volume Control
2. Channel 2 Volume Control
3. Channel 3 Volume Control
4. Channel 4 Volume Control
5. Channel 5 Volume Control
6. Master Tone Control (Bass)
7. Master Tone Control (Treble)
8. Master Volume Control
9. Power On / Off switch
10. Power On / Off indicator LED
11. Output Level indicator LED

- 4 -
REAR PANEL
1. Mains Input Socket 12. MIC 4/Aux 1 Selector Switch
2.Power Fuse 13. MIC 4 Input (XLR Jack)
3. Earth Connection Screw 14. MIC 3/TEL Selector Switch
4. DC Power Supply Terminals 15. MIC 3 Input (XLR Jack)
5. Speaker Output Terminals 16. MIC 2 Input (XLR Jack)
6. Aux Output (RCA Jack) 17. MIC 1 Input (XLR Jack)
7. Tape Output (RCA Jack) 18. Mains Voltage (115V/230V) Selector Switch
8. Aux 3 Input (RCA Jack) 19. Aux 2 Input (RCA Jack)
9. Aux 3 Level Control 20. Aux 1 Input (RCA Jack)
10. MIC 5/Aux 2 Selector Switch 21. Tel Page Input (Screw Terminals)
11. MIC 5 Input (XLR Jack)
Mains Connection
The supply transformer has been designed for use on either 115Vac or 230Vac, selected by slide
switch on rear panel. The amplifier is factory set at 230Vac mains voltage.
Battery Connection (24Vdc)
When using external batteries, earth the amplifier via the screw terminal because of the high
voltages present. Electrical stability of the system is increased by earthing the case.
NOTE: the connection cable must be fitted with an in-line fuse. Quick blow type F10Awhen
Connecting batteries please ensure correct polarity.

- 5 -
Microphone Connection
Mic1~5 inputs are balanced standard XLR Jack , rear panel.
Mic1 input has VOX priority which will override Channel 3~6 and Line input signals but
NOT the Channel 2 input.
Line (Aux/CD) Connection
The equipment provides an auxiliary input which may be used for connecting other signal
sources such as a Radio Tuner, CD or Cassette player. A slide switch is located on the read panel
for selection of, Mic3→Tel, Mic4→Aux4, Mic5→Aux5.
The line level Control operates on each of the input sources.
To operate select the desired music source using the slide switch and turn the “Channel” control
clockwise to increase the volume or anticlockwise to reduce the volume.
The Aux / input sockets are standard stereo RCA Jack phono, single sockets are supplied and
these are
linked together internally, this allows stereo signal source to be used without the need to obtain
a special lead, however you may wish to check with the manufacturer of the signal source to
ensure that no damage will result if the left and right output channels are put in parallel.
RCA Phono plug connections
Sleeve-Screen
SLEEVE
PIN
Pin- Signal
Tape output Connection
These standard RCA stereo Jack phono sockets provide a mixed output suitable for connection to
a tape or Cassette recorder.

- 6 -
Aux out
Connects the mixer/preamplifier stage to the power amplifier stage. The connecting link must be
plugged in for normal operation as a mixer/amplifier. “AUX OUT” is after the tone controls and
the master volume control.
Power outline voltage comply with power input voltage (IEC voltage).
Loudspeaker Connection
Note: Use only 100V or 70V (Selectable) Line Loudspeakers
Low Impedance (8Ω)
This output allows connection of standard low impedance loudspeakers, the minimum load
impedance must be 8Ω, when to or more loudspeakers are use ensure that they are wired in
such a way that the load impedance is between 16Ωor between (4Ω).
Connecting a Mixer Amplifier to a Power Amplifier
These amplifier can be connected using phono to phono leads from the mixer amplifier PRE out
the power amplifier input RCA socket. Further power amplifier can be connected by connecting
from the output of first power amplifier to the input of the second. Up to three power amplifier
can be connected in this way.
Input must be from power amp in (Rear Panel) (Mic1 XLR Jack)
QSM-6xxE Technical Specifications
Type Mixer Amplifier
Model QSM-606E QSM 624E
Mains Voltage AC 115V/ 230V, 50 / 60Hz ± 10% SwitchableSupply
Battery Voltage DC 24V (MAX 10% deviation)
Output power Max: 90W 180W 380W
Rated: 60W 120W 240W
Output Speaker outputs:
Music/speech: , 8Ω, 70V, 100V
Tape output: 1V 150KΩ
Aux output: 1V, 150Ω
Inputs Mic 1~5: sensitivity. Adjustable (1mV), 600Ωbalanced.
Aux 4~6: 150mV, stereo 22K,

- 7 -
TEL: 150mV, Adjustable 600Ω, balanced
Frequency response Mic 1~Mic 5: 60Hz ~ 15KHz ± 3dB
Aux 4~ 6: 50Hz ~ 20KHz ± 3dB
TEL: 50Hz ~ 15KHz ± 3db(cmrr)
Total harmonic distortion Less than 1% at 1KHz, rated power
Signal to noise ratio All Volume Controls C.C.W.: 80dB below rated power
Mic 1~ 5: 60dB below rated power
TEL: 80dB rated power
Aux: 80dB below rated power
Tone Controls Bass: ± 10dB at 100Hz
Treble: ± 10dB at 10KHz
Controls Front Panel
Power switch
Channel 1~5 volume control
Tone controls (Bass, Treble)
Master volume control
Rear Panel:
Aux 3 volume control
Mic 3/Tel Slide switch
Mic 4/Aux 1 Slide switch
Mic 5/Aux 2 Slide switch
AC 115V / 230V voltage Selector switch
Indicators Power indicator (LED), output level indicators (6 LEDS)
AC power consumption 160W 320W 640W
DC power consumption 5A 8A 15A
Phantom power Set up Mic 1 “off” Mic 2 “off” Mic 3 “on” Mic 4 “off” Mic 5 “off”
Phantom power output 16V
Priority Priority level ( Mic 1: 0.3mv)
Channel 1 can mute Channel3 ~5, Aux3
Dimensions ( H x W x D )mm 88(H)x425(W)x305(D)
Weight 8.5 kgs 10 kgs 11 kgs
Color Black
Mounting options Table top or 19” rack mountable

- 8 -