Ashly MX-206 Руководство по эксплуатации - Страница 7

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Также для Ashly MX-206: Руководство по эксплуатации (12 страниц), Технические примечания и спецификации (2 страниц), Руководство по эксплуатации (8 страниц), Руководство по эксплуатации (9 страниц)

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1. Schematic Diagram

6.3 Submixer In Larger

Sound System:

In this application

the MX-206 is used to up-

grade an existing sound sys-

tem by providing a vocal or

instrumental sub-mix to the

main mixer without tying up

a number of channels on the

main console. This tech-

nique allows the system in-

put capacity to be expanded

without installing more bur-

ied mic cables and without

changing the mixer that ev-

eryone is already comfort-

able

with.

Use

the

Headphones

Output

achieve a "pre-mix" before

adjusting the main console.

7. TROUBLESHOOTING TIPS

7.1 No Sound

Check the AC power. Is the power switch on and

its LED lit? Check the level meters. If they are operat-

ing, the problem is between the mixer and the later com-

ponents in the system. If there is no meter activity, check

to see you really have an input signal and that it is on the

desired channel. Check that you have the master gain

controls at the desired operating level.

7.2 Distorted Sound

Something is being overdriven in the signal path.

If the clip indicators are active, reduce the channel gain

control and/or press in the pad switch on the rear panel.

If the output level meters are constantly in the red, re-

duce the Master gain and increase the gain of compo-

nents following the mixer. There are many gain

adjustments in the mixer itself and probably several oth-

ers in other system components which makes it possible

to overdrive an input section and then incorrectly try to

reduce the gain of the output section. The best way to

approach setting gains is to establish the operating level

of input stages first by setting their gain as high as pos-

sible but leaving about 20dB of headroom for loud peaks,

then move on to set the master gain to produce a good

Operating Manual - MX-206 Stereo Microphone Mixer

Sub-Mix of Orchestra, Choir,

Percussion Section,

Area Microphones, etc.

Model MX-206

Stereo

Made I n USA

Outputs

100-120VAC

Phantom

Left

Right

50-60Hz 15W

Pwr.

meter reading. Proceed to set the gain of equalizers, lim-

iters, crossovers, and amplifiers following the mixer in

the same manner, always working toward the later stages

of the system.

usually due to an input stage set up for low gain and then

compensating by increasing the master gain. Check that

the Pad switch is not enabled unnecessarily. Turn up the

channel gain controls and reduce the master gain.

system wiring. A complex sound system with many

sources separated by significant distance and using sev-

eral power outlets has many opportunities for this prob-

lem to occur. If possible, feed everything in the system

from one power source with a common ground. Use bal-

anced input and output connections between widely sepa-

rated components.

dealer or call an Ashly technical service representative at

1-800-828-6308 ext. 125.

Ste reo Aux

Ch.6

Ch.5

Ch.4

Mono Output

-L-

PUSH

Pad

-R-

-20dB

Aux

(-20dB)

Transformer

Out

Balance d

Existing Main Console

7.3 Excessive Noise

If the noise is in the form of hiss, the problem is

7.4 Excessive hum

This is usually caused by "ground loops" in the

If you need help, get in touch with your Ashly

Ch.3

Ch.2

Ch.1

PUSH

Pad

(-20dB)