USER MANUAL

QSM-303V

MIC Mixer Amplifier

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WARNING: THIS APPLIANCE MUST BE EARTHED

IMPORTANT As the colours of the wires in the mains

The wires in the mains lead are coloured lead of this apparatus may not correspond

In accordance with the following code:

Green and Yellow: Earth (E) 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

Blue: Neutra (N)

Brown: Live (L) which is marked with the letter N or coloured black. The wire which is marked with the letter L or 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.

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QSM-303V Mixer Amplifier

FRONT PANEL

1. Mic. 1 Level Control

2. Mic. 2 Level Control

3. Mic. 3 Level Control

4. AUX 1 Level Control

REAR PANEL

5. AUX 2 Level Control

6. AUX 3 Level Control

7. Master Tone Control (Bass)

8. Master Tone Control (Treble)

9. Master Volume Control

10. Power On / Off Switch

1. Mains Power Input Socket

2. Power Fuse

3. Earth Connection Screw

4. DC 12V Power Supply Terminals

5. Speaker Output Screw Terminals

6. Aux 3 Input (RCA Jack)

7. Aux 2 Input (RCA Jack)

8. Aux 1 Input (RCA Jack)

9. Mic 3 input Jack

10. Mic 2 input Jack

11. Mic 1 input Jack(XLR)

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Power Source

The amplifier is fixed at 115V AC or 230V AC. It depends on the territory main voltage.

Battery Connection (12Vdc)

When using external batteries, earth the amplifier via the screw terminal because of the high voltage present. 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 - q uick blow type 5A (60V). When connecting batteries please ensure correct polarity.

Mains Connection

Microphone Connection

Mic1 is XLR balanced Jack, while Mic2-3 inputs are unbalanced 6.3mm phono jack.

Mute Function

Mic1 input has VOX priority over all other inputs.

Line (Aux/CD) Connection

The equipment provides 3 auxiliary inputs, which may be used for connecting other signal sources such as a Radio Tuner, CD or Cassette player. The Aux input sockets are standard stereo

RCA Jack. The line level Control on the front panel operates on each of the input sources.

RCA plug connections

Sleeve-Screen PIN

Pin- Signal

SLEEVE

Loudspeaker Connection

For 100V or 70V Line Loudspeaker

Please use only one 100V or 70V (Selectable) Line Loudspeakers

For Low Impedance 8Ω or (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 4Ω and 16Ω.

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QSM-303V Technical Specifications

Type

Model

Mixer Amplifier

QSM-303V

Power

Supply

Mains Voltage AC 115/230V, 50/60 Hz ± 10%

Battery DC 12V (MAX 10% deviation)

Voltage

Total Harmonic Distortion <= 10% @ 1KHz, rated power

Mic 1 XLR (Balanced)

Sensitivity

Mic 2 ~ 3 1/4" Phono Jack (Unbalance)

Mic 1~3 , 1.5mV @600 ohm

RCA Jack (Unbalance)

AUX 1~3 , 200mV @10K ohm

Frequency Response

Output

Signal to Noise Ratio

Tone

AC Power Consumption

DC Power Consumption

Dimension

Weight

Mounting

50 Hz ~ 15K Hz +/- 3 dB

100V, 70V, 8 ohm, 4 ohm

80dB

Bass 100 Hz +/-10 dB

Treble 10KHz +/-10 dB

80 W @ RATED POWER

6A @ RATED POWER

68(H) x 275(W) x 225mm (D)

4 KGS

Free Standing or Hang-bracket

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