PA Tech Electronics QSM-606EP User manual

USER MANUAL
QSM-606EP
QSM-612EP
QSM-624EP
MIXER AMPLIFIER

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PANEL DESCRIPTION
1. Channel 1 Volume Control 7. Treble Control
2. Channel 2 Volume Control 8. Master Volume Control – Volume control for entire system
3. Channel 3 Volume Control 9. Power Switch
4. Channel 4 Volume Control 10. Power Indicator - LED
5. Channel 5 Volume Control 11. Output Level Indicator LED
6. Bass Control
REAR PANEL DESCRIPTION
1. IEC Socket – Used for A/C Line Interconnect withAC fuse 17. MIC 2 Input (XLR Jack)
2. Earth Ground Connection Screw 18. MIC 2/Aux 2 Selector Switch*
3. PowerAmplifier Input (RCA Jack) 19. Aux 2 Input (RCA Jack)
4. Pre Output (RCA Jack) 20. Aux 1 Input (RCA Jack)
5. Tape Output (RCA Jack) 21. MIC 1/Aux 1 Selector Switch*
6. Aux 6 Level Control 22. MIC 1 Input (XLR Jack)
7. Aux 6 Input (RCA Jack) 23. Supply Voltage (115V/230V) Selector Switch
8. Aux 5 Input (RCA Jack) 24. Speaker Output Terminals

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9. MIC 5/Aux 5 Selector Switch* 25. DC Power SupplyTerminals
10. MIC 5 Input (XLR Jack) 26. MIC 5 Input (Screw Terminals)
11. MIC 4 Input (XLR Jack) 27. MIC 4 Input (Screw Terminals)
12. MIC 4/Aux 4 Selector Switch* 28. MIC 3 Input (Screw Terminals)
13. Aux 4 Input (RCA Jack) 29. MIC 2 Input (Screw Terminals)
14. Aux 3 Input (RCA Jack) 30. MIC 1 Input (Screw Terminals)
15. MIC 3/Aux 3 Selector Switch* 31. Tel Page Input (Screw Terminals)
16. MIC 3 Input (XLR Jack) 32. Tel Page Level Control
33. MIC 1 Mute Switch – Mute On enables mute of
chl. 1 over chls. 3-6
* Switch selects between RCA Line inputs and Microphone level, either screw or XLR input.
POWER SOURCE
VAC
The supply transformer has been designed for use either 115V or 230V, 50-60Hz, selected by a slide switch
on the rear panel. The amplifier is factory set at 230Vac mains voltage.
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.) NOTE: the connection cable must be fitted with an
in-line fuse, quick blow type 5A(60W) 8A(120W) 15A(240W). When connecting batteries, please ensure
correct polarity.
MICROPHONE CONNECTION
Mic1~5 inputs are balanced standard XLR Jack and screw terminal, rear panel.
MUTING
The TEL input has voice activated (VOX priority) muting over, CH1~CH5 and AUX 6.
Priority Microphone, Mic1 input has VOX priority over CH 3~6 and Line input signals but does
NOT mute Channel 2 input.
LINE (Aux) 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. Apush switch is located on the rear panel for selection of, Mic1→Aux1,
Mic2→Aux2, etc. The Aux input is a dual RCA phono jack and has a stereo to mono converter for each
channel RCA Phono plug connection
Sleeve-Shield
SLEEVE
PIN
Pin- Signal

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TAPE OUTPUT CONNECTION
These standard RCA/phono jacks provide a mixed output suitable for connection to a tape or cassette
recorder.
PRE OUT / AUX OUT
The horseshoe jumper “U” connects the mixer/preamplifier stage to the power amplifier stage. The connecting
link must be plugged in for normal operation as a mixer/amplifier. “PRE OUT” is after the tone controls and the
master volume control.
POWER AMP IN
Connecting the Mixer Amplifier to a Power Amplifier or other accessory equipment:
This amplifier can be connected to accessory equipment by using phono to phono leads from the mixer
amplifier “PRE OUT (1)” to the accessory gear and back to the “POWER AMP IN” RCA jack. Additional
amplification can be achieved by connecting the “PRE OUT (2)” output to another power amplifier. Under
normal conditions, up to three power amplifiers can be connected in this way.
LOUDSPEAKER CONNECTION
Use only 70V or 100V line loudspeakers.
LOW IMPEDANCE 8Ωor (4Ω):
This output allows connection of standard low impedance loudspeakers. The minimum impedance must be
4Ω. When two or more loudspeakers are in use, ensure that they are wired in such a way that the
impedance load is between 4Ωand 16Ω.
QSM-606EP, QSM-612EP and QSM-624EP Technical Specifications
Type Mixer Amplifier
Model QSM-606EP QSM-612EP QSM-624EP
Mains Voltage AC 115V/ 230V, 50 / 60Hz ± 10% SwitchableSupply Battery Voltage DC 24V (MAX 10% deviation)
Output Power: 60W 120W 240W
Outputs Speaker outputs: 4Ω, 8Ω, 70V, 100V
Tape output: 1V 4.7KΩ
Pre output: 1V, 600Ω
Aux Mains Power: 4A/115V
Inputs Mic 1~5: 1mV, 600Ωbalanced.
Aux 1~6: 150mV, dual RCAstereo to mono converter 22K,
TEL: 150mV, 600Ωbalanced
Power amplifier in: 1V
Frequency response Mic 1~Mic 5: 60Hz ~ 12KHz ± 3dB
Aux 1~ 6: 50Hz ~ 15KHz ± 3dB
TEL: 50Hz ~ 15KHz ± 3dB
Total harmonic distortion Less than 1% @ 1KHz, rated power
Signal to noise ratio All Volume Controls: 80dB below rated power
Mic 1~ 5: 60dB below rated power
Tel: 80dB below rated power
Aux: 80dB below rated power
Tone Controls Bass: ± 10dB at 100Hz
Treble : ± 10dB at 10KHz
Controls Channel 1~5 volume control
Aux 6 volume control
Master volume control
Tone controls (Bass, Treble)
TEL volume control

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Mute slide switch
Mic 1/Aux 1 push switch
Mic 2/Aux 2 push switch
Mic 3/Aux 3 push switch
Mic 4/Aux 4 push switch
Mic 5/Aux 5 push switch
AC 115V / 230V voltage Selector switch
Indicators Power indicator (LED), output level indicators (6 LEDS)
AC power consumption 150W 300W 600W
DC power consumption 5A 8A 15A
Phantom power Factory set “off” @ 16V, defeat via internal jumpers
Priority TEL mutes all channels
Channel 1 can mute Channel 3 ~5,Aux 3~6
Dimensions ( H x W x D )mm 17”W x 3.5”H x 13.5”D
Weight 8.5 9.5 11.5
Color Black
Mounting options Table top or 19” rack mountable / Rack Mount Ears Included
WARNING: THIS APPLIANCE MUST BE EARTHED
IMPORTANT
The wires in the mains lead are colored
In accordance with the following code:
Green and Yellow: Earth (E)
Blue: Neutral (N)
Brown: Live (L)
As the colors of the wires in the mains lead of this
apparatus may not correspond with the colored
markings identifying the terminals in your plug
proceed as follows:
The wire, which is colored green and yellow,
must be
connected to the terminal that is marked with the
letter N or colored black. The wire which is
marked with the letter Lor colored red.
If a 13 Amp (B.S.1363) plug or any other type of
plug is used, a 5 A
mp 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.

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GENERAL INSTALLATION
DO NOT run microphone cables near A/C lines, data, telephone or 70V line cables.
DO NOT run outputs line cable near data, telephone or other low voltage cables.
ENSURE that all loudspeakers are in-phase.
ENSURE that there are no short circuits on the loudspeaker line before connecting to the amplifier.
IMPORTANT
The wires in the mains lead are colored
In accordance with the following code:
Green and Yellow: Earth (E)
Blue: Neutral (N)
Brown: Live (L)
As the colors of the wires in the mains lead of this apparatus
may not correspond with the colored markings identifying
the terminals in your plug proceed as follows:
The wire that
is colored green and yellow must be connected
to the terminal which is marked with the letter N or colored
black.
The wire which is marked with the letter L or colored
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.
WARNING: THIS UNIT MUST BE EARTH GROUNDED