Yamaha MLA8 User manual

MIC LINE AMPLIFIER
Rear Panel
OUTPUT
D-sub 25pin Cable
AD Card MY8-AD96
Digital Mixer
MLA8
OUTPUT
D-sub 25pin Cable
AD Card MY8-AD96
Digital Mixing Engine DME64N, DME24N
MLA8
An eight-channel head amplifier inheriting the head-amp technology of
the acclaimed DM2000 for high-quality sound reproduction
Having won the plaudits of professional engineers from live mixing venues, music
production studios, and countless other areas, Yamaha’s acclaimed DM2000 Digital
Production Console provides the head-amp technology used in the MLA8’s basic circuit
design. Meticulously reproducing the original sound with breathtaking clarity, this head
amp achieves stunning audio quality.
Highly practical functions in a compact 1U package
Notwithstanding its space-saving 1U design, the MLA8 front panel equips you with a
26dB pad, a 44dB fully adjustable gain trim, an 80Hz HPF, and a phantom-power
switch on each channel. This HPF processes audio signals while still in analog format;
accordingly, in systems combining MLA8s with Yamaha digital mixers, DME64Ns, and
DME24Ns, sound control is simple and the range can be further broadened. Put
simply, MLA8s with digital mixers and DMEs produce the perfect combination.
Consistent functional colors for highly-convenient operation
Functional colors for Yamaha mixers are selected based on a set of common rules.
Similarly, the MLA8 uses green for signal indicators and HPFs, red for peak indicators,
and gray for pads. In systems where this head amplifier is combined with other Yamaha
products, the resulting ability to identify component functions at a glance helps to
realize an environment where operations can be carried out quickly, intuitively, and
without error.
Euroblock and 25-pin D-sub connectors for highly adaptable system
support
XLR connectors are used for the input of audio, and amplified sound is output via a
Dsub-25pin and a Euroblock — an ideal connector for installation. Dsub-25pin
terminals are compatible with the MY8-AD96 8-channel Mini-YGDAI* A/D card, and this
ensures a high degree of affinity with Yamaha digital mixers.
*: Yamaha General Digital Audio Interface
Eight-channel mic line amplifier for
exceptionally clear sound reproduction
When insufficient mic
inputs are available on a
digital mixer, use an
MLA8 to expand this
number to eight.
Addition of mic inputs for digital mixers
Capable of handling
input from eight
microphones, the MLA8
is an ideal choice for
system requirements.
Mic input for DME64N, DME24N Digital Mixing Engines

Conditions MIN TYP MAX UNIT
Total Harmonic Distortion 20 Hz - 20 k Hz @ +14 dBu, 10 k ohms, 0.1 %
(THD+N) GAIN Maximum
20 Hz - 20 k Hz @ +14 dBu, 10 k ohms, 0.01 %
GAIN Minimum
Frequency Response 20 Hz - 20 k Hz @ +4 dBu, 10 k ohms, –1 0 0.5 dB
GAIN Maximum
20 Hz - 20 k Hz @ +4 dBu, 10 k ohms, –0.5 0 0.5 dB
GAIN Minimum
Hum & Noise PAD OFF, GAIN Maximum –128 dBu
(20 Hz - 20 k Hz) ( Sensitivity = –60 dBu ) (68 dB S/N)
PAD ON , GAIN Maximum –99 dBu
( Sensitivity = –34 dBu ) (65 dB S/N)
Rs=150 ohms PAD OFF, GAIN Minimum –108 dBu
( Sensitivity = –16 dBu ) (92 dB S/N)
PAD ON , GAIN Minimum –82 dBu
( Sensitivity = +10 dBu ) (92 dB S/N)
Maximum Voltage Gain CH IN to CH OUT 64 dB
Crosstalk Adjacent Inputs @ 1 k Hz –90 dB
PAD ON, GAINMinimum @ 10 k Hz –70 dB
CH INPUT GAIN control variable 44 dB
CH INPUT PAD switch 26 dB
Electrical Characteristics
MLA8 SPECFICATIONS
*With the supplied rubber pads assembled.
439
430
375.5 353.5
17
348
43
51 220
65 350
480
44 45
22
423
-16
+10 -34
-60
GAIN -16
+10 -34
-60
GAIN
SIGNAL
PEAK
OFF ON
+48V
SIGNAL
PEAK
OFF ON
+48V
8080
-16
+10 -34
-60
GAIN
SIGNAL
PEAK
OFF ON
+48V
80
-16
+10 -34
-60
GAIN
SIGNAL
PEAK
OFF ON
+48V
80
-16
+10 -34
-60
GAIN
SIGNAL
PEAK
OFF ON
+48V
80
-16
+10 -34
-60
GAIN
SIGNAL
PEAK
OFF ON
+48V
80
-16
+10 -34
-60
GAIN
SIGNAL
PEAK
OFF ON
+48V
80
-16
+10 -34
-60
GAIN
SIGNAL
PEAK
OFF ON
+48V
80
12345678
MICLINE AMPLIFIER
POWER
ON/ OFF
26dB 26dB26dB26dB26dB26dB26dB26dB
*
Dimensions
0 dBu is referenced to 0.775 V rms.
General Specifications
CH High Pass Filter 80 Hz, 12 dB/octave Turn over /roll-off frequency of
shelving : 3 dB below maximum variable level.
Phantom Power +48 V DC is applied to balanced inputs for powering
condenser microphones via 6.8 k ohmsB
CH PEAK LED One red LED per channel.
Comes on when post – GAIN signal level
reaches -17 dBu.
CH SIGNAL LED One green LED per channel. Comes on when post
GAIN signal level reaches -10 dBu.
Included Accessories Power Supply Cord, Euroblock Connectors
( 3P x 8 ), Rubber Feet ( x 4 ), Owner's Manual
Power Consumption 25 W
Dimensions (W x H x D) 480 mm x 44 mm x 375.5 mm
Weight 4.7 kg
*1: 0 dBu is referenced to 0.775 Vrms.
Hum & Noise are measured with a 6
dB/octave filter @12.7 k Hz;
equivalent to a 20 k Hz filter with
infinite dB/octave attenuation.
PAD Gain Actual Load For Use With Input Level *1 Connector In
Impedance Nominal Nominal
Max. before Clip Amplifier unit
0–60 dBu –40 dBu
–60 (0.775 mV) (7.75 mV)
26 –34 dBu –14 dBu
3 k ohms 50 – 600 ohms Mics (15.5 mV) (155 mV) XLR-3-31type
0600 ohms Lines –16 dBu +4 dBu (balanced)
(123 mV) (1.23 V)
26 –16 +10 dBu +30 dBu
(2.45 V) (24.5 V)
Iuput Characteristics
Actual Source For Use With Output Level *1 Connector In
Impedance Nominal
Nominal Max. before Clip Amplifier unit
Euroblock connectors
(balanced)
150 ohms 10 k ohms Lines +4 dBu +24 dBu D-SUB 25P
(1.23 V) (12.3 V) female connector
(balanced)
Output Chatracteristics
*1: 0 dBu is referenced to 0.775 Vrms.
D-sub 25pin Assignment Table
13 12 11 10
25 24 23
↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓
NC GCH
G:GND
C H 8
GCH
C H 7
GCH
C H 6
GCH
C H 5
GCH
C H 4
GCH
C H 3
GCH
C H 2
GCH
C H 1
C:COLD
H:HOT
9 8 7 6 5 4 3 2 1
22 21 20 19 18 17 16 15 14
This document is printed on chlorine-free (ECF) paper with soy ink.
http://www.yamahaproaudio.com
LPA482 Printed in Japan
‘KANDO’ …Inspiring the Heart and Spirit.
unit : mm