Справочник Пользователя для Yamaha MLA8

 

ENGLISH

1

 

This switch turns the power on or off. Press the switch 
in to turn it on (the Power indicator lights).

To avoid loud noise from the speakers, first 
turn on the power to the connected devices 
that are closest to the sound source.

 

➞

 

➞

 

➞

 

To turn off the power to the system, reverse 
the order described above.

2

 

 

 

This button switches the high pass filter (HPF) on or 
off for each channel, cutting frequencies below 80Hz. 
Press the button in to turn HPF on.

3

 

 

Pressing this button turns on the attenuator for each 
channel, attenuating the input signal level by 26dB.

4 [+48V] switches

This switch supplies phantom power to pins 2 and 3 of 
the XLR-type input connectors on each channel. Turn this 
switch on if you are using condenser microphones 
requiring external +48V power with the INPUT 
(XLR) connector.

• To avoid damage to speakers, be sure to 

turn off any connected amplifier (or 
powered speakers) before turning these 
switches on or off.

• Be sure to leave these switches off if you do 

not need phantom power. If you connect to 
an unbalanced device or to an ungrounded 
transformer while these switches are on, it 
may result in humming noise or even 
damage.

5 PEAK indicators

Light up in red when the signal level via the channel’s 
GAIN control comes within 3dB of the clipping level.

6 SIGNAL indicators

Light up in green when the signal level via the 
channel’s GAIN control reaches within 10dB of the 
nominal (rated) level. 

7 GAIN controls

Adjust the gain applied to the input signal level. 
If level is low (e.g., mic input) turn the [26dB] button 
off, and adjust the input levels from -60dBu to -16dBu. 
If the signal level is high (e.g., line input), turn the 
[26dB] button on, and adjust the input levels from 
-34dBu to +10dBu.

n To get the best balance between the S/N ratio 

and the dynamic range, adjust the gain so that 
the Peak indicator comes on just as the signal 
approaches its maximum level.

Security cover
This device has two holes for installing the 
protective cover on each side of the front panel 
(size: M3, distance between holes: 423mm). To 
prevent operation errors and inadvertent changes, 
you can attach a user-made cover to the front 
panel. Yamaha, however, does not make a security 
cover for the device.
If you attach such a cover yourself, make sure that 
the securing screws do not protrude inside the front 
panel by more than 15mm. To avoid the cover 
touching the knob, be sure to leave a space of 
about 20mm between the front panel and the cover.