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GUIDELINE TO OPERATE THE AMPLIFIER

1. Place the Amplier in dry and well ventilated place. Considerable heat is generated inside the amplier during

continuous use, therefore do not block the top cover ventilation holes by placing anything on top of the amplier.

2. Only good quality Low impedance microphones like 5 CORE 5CM-ND 780X, ND 99X or ND series to be used to

avoid / reduce feedback & howling. This will help obtaining satisfactory power output from Amplier without

howling or feedback.

3. Driver Units, Columns Speakers & Box speakers give best performance and are safe from damage when fed with

up to half of their handling capacity. This is because these have to handle certain peak music signals and

transients which may be two to three times higher than the power wattage being fed to these by Amplier.

4. It is advised to keep the master Control of the Amplier at'0' position before switching 'ON' the Amplier & later

may be moved to optimum position say '6 to 8'.

CAUTION

The equipment must be earthed properly before operating it to avoid electric shock. A wire from the Earth terminal

must be connected to either water pipe or to electrical earth for safe operation.

SPEAKER CONNECTIONS

Low impedance Speaker Connections

Speaker impedance taps of 4Ω, 8Ω & 16Ω have been provided at the rear. Always use 23/38 or thicker speaker cable

to reduce power loss in the cables. Make proper matching speaker connection as explained below.

• Connecting two Speakers (like 5C-WC-50DX) in parallel.

16W

Resultant Impedance = 16¸2 = 8W

• Connecting four Speakers (like 5CA-30T) in parallel.

16W

–

Resultant Impedance = 16¸4 = 4W

High impedance (70V/100V line) speaker connections

• Connecting 12 Column Speakers with 100V LMT

connected at 10 watts tap.

Correct Phasing of Loudspeakers

•

When two or more speakers/Units are installed in the same area and are facing the same direction, it is essential

that their Cones/ diaphragms act in unison. Otherwise the sound level of one speaker will be cancelling the sound

level of the other. To avoid any mistake, the terminal of Box Speakers and the driver unit are marked '+' & '-'.

Always connect the COM of the amplier to '-' of Speaker and 4Ω/8Ω/16Ω of the '+' of the Speakers.

•

In case of LMTs the COM of all the LMTs should be connected to the COM of the red terminal strip of the Amplier

and the Power tap to 70V/100V lines as shown in gure.

CAUTION

•

When 70V/100V line is being used, no Speakers / driver units should be connected to 4Ω/8Ω (low impedance) tap.

•

Loudspeaker / driver unit should be connected to either COM-4Ω, COM-8 Ω, COM-16Ω, COM-70V, COM-100V

terminals, but never to more than one set of terminals.

16W

–

16W

–

• Connecting two driver units (like 5CU-60) in parallel.

Resultant Impedance = 16¸2 = 8W

• Connecting 6 Driver Units with 100V LMT connected at

10 watts tap.

16W

–