Yamaha MR1642 Service Manual - Page 3

MR842/MR1242/MR1642

®SPECIFICATIONS

Total

Harmonic

Distortion

Less

than

0.1%,

20

Hz

-

20

kHz,

@+14

dB

output

into

600

ohms.

Frequency

Response

+1,

-3

dB,

20

Hz

-

20

kHz,

@+4

dB

output

into

600

ohms.

Hum

&

Noise

(20

Hz

—

20

kHz,

Rs=150

SI,

input

pad

@

0

dB,

input

sensitivity

@

-60

dB)

-

128

dB

equivalent

input

noise.

—

90

dB

residual

output

noise.

—

73

dB

(77

dB

S/N)

at

GROUP

OUT,

Master

fader

nominal,

all

channel

faders

minimum.

-

64

dB

(68

dB

S/N)

at

GROUP

OUT,

Master

and

one

channel

fader

nominal.

—

70

dB

(74

dB

S/N)

at

AUX

SEND,

Master

fader

nominal,

all

channel

AUX

controls

minimum.

-

64

dB

(68

dB

S/N)

at

AUX

SEND,

Master

fader

and

one

AUX

send

control

nominal.

Maximum

Voltage

Gain

84

dB

CH

IN

to

GROUP

OUT

94

dB

CH

IN

to

STEREO

OUT

94

dB

CH

IN

to

AUX

SEND

1

84

dB

CH

IN

to

AUX

SEND

2-3

20

dB

AUX

RETURN

1-2

to

GROUP

OUT

&

STEREO

OUT

10

dB

SUB

IN

to

GROUP

OUT,

AUX

SEND

1-3

Crosstalk

—

60

dB

at

1

kHz,

adjacent

channel

inputs.

—

60

dB

at

1

kHz,

input

to

output.

Input

Channel

Gain

Control

40

dB

range

(-60

-

-20

dB),

stop

to

stop.

Input

Channel

Pad

Switch

0/20

dB

attenuation.

Input

Channel

Equalization

(15

dB

maximum

boost

or

cut)

HIGH:

10

kHz

(shelving).

MIDDLE:

350

Hz

-

5

kHz

(peaking).

LOW:

100

Hz

(shelving).

VU

Meters

(All

meters

calibrated

for

0

VU

=

+4

dB

output)

6

illuminated

meters:

GROUP

1/AUX

1,

GROUP

2/AUX

2,

GROUP

3/AUX

3,

GROUP

4/CUE,

STEREO

L/R

Clip

Indicators

LEDs

for

each

input

module:

CLIP

(red)

lights

when

post-EQ

signal

is

3dB

below

clipping.

Peak

Indicators

LED

built

into

each

VU

meter.

It

turns

on

when

output

signal

reaches

+14dB.

Phantom

Power

+48

V

DC

applied

to

electronically

balanced

inputs

(via

6.81(S/current

limiting/isolation

resistors).

Power

Requirements

Power

requirements

match

local

AC

mains

voltage

and

frequency

in

area

where

sold.

Power

Consumption

MR842

:70

W

MR1242

:

70

W

MR1642

:

70

W

Console

Dimensions

(W

x

H

x

D)

MR842

:

555

x

182

x

600

mm

(21-7/8"

x

7-3/16'

x

23-5/8')

MR1242

:

695

x

182

x

600

mm

(27-3/8'

x

7-3/16"

x

23-5/8")

MR1642

:

835

x

182

x

600

mm

(32-7/8'

x

7-3/16'

x

23-5/8")

Net

Weight

MR842

:

15

Kg

(33

lbs

1

oz)

MR1242

:

18

Kg

(39

lbs

11

oz)

MR1642:

21

Kg

(46

lbs

5

oz)

*

0dB

=

0.775

Vrms.

Specifications

and

appearance

subject

to

change

without

notice.

2

Yamaha MR1642 Service Manual - Page 3

®specifications

Page 3 highlights