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LPA438 0033 Printed in Japan
For details please contact:
Total Harmonic Distortion Less than 0.1% (THD + N)
(Master output) 20 Hz–20 kHz @ +14 dB 600 Ω
Frequency Response 0 + 1, -3 dB
(Master Output) 20 Hz–20 kHz @ +4 dB 600 Ω
Hum & Noise (20 Hz–20 kHz) *1 −128 dB Equivalent Input Noise.
Rs = 150 Ω−97 dB Residual Output Noise.
(MATRIX[1-8] Output)
Input Gain = Max. −99 dB Residual Output Noise. (OTHERS)
Input Pad = OFF
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Input sensitivity=-60 dB
−64 dB (68 dB S/N) MIX OUT Master Level control and one CH
fader at nominal level.
−80 dB (84 dB S/N) STEREO OUT Master fader at nominal level and
all CH assign SW’s off and all MIX to ST SW’s
off.
−75 dB (79 dB S/N) MIX OUT (VARIABLE) Master Level control at
nominal level and all CH assign SW’s off.
−81 dB (85 dB S/N) MIX OUT (FIX) Master Level control at nominal
level and all CH assign SW’s off.
−90 dB (94 dB S/N) MATRIX OUT Master level control at nominal
level and all Matrix Mix controls at minimum
level.
Crosstalk
−80 dB @ 1 kHz adjacent inputs.
−70 dB @ 1 kHz input to output. (CH INPUT)
−50 dB @ 1 kHz input to output. (ST CH INPUT)
Maximum Voltage Gain
70 dB CH INPUT to DIRECT OUT
60 dB CH INPUT to CH INSERT OUT
80 dB CH INPUT to MIX OUT (VARIABLE, Pre Fader)
90 dB CH INPUT to MIX OUT (VARIABLE, Post Fader)
84 dB CH INPUT to MIX OUT (FIX; 1–8, Post Fader)
84 dB CH INPUT to STEREO A OUT (CH to ST)
80 dB CH INPUT to STEREO B OUT (CH to ST)
100 dB CH INPUT to STEREO A OUT (VARIABLE,
MIX; Post Fader) (via MIX to ST)
96 dB CH INPUT to MATRIX OUT (VARIABLE,
MIX; Post Fader) (via MIX to MATRIX)
70 dB CH INPUT to MONITOR OUT (PFL)
47 dB ST CH A INPUT to MIX OUT (VARIABLE;1–12,
Pre Fader)
54 dB ST CH A INPUT to MIX OUT (FIX;1–8)
44 dB ST CH B INPUT to MIX OUT (FIX;1–8)
70 dB TALKBACK IN to MIX OUT
6 dB SUB IN to STEREO B OUT, MONITOR OUT,
MATRIX OUT
10 dB SUB IN to STEREO A OUT, MIX OUT
6 dB 2TR IN 1 to MONITOR OUT
17.8 dB 2TR IN 2 to MONITOR OUT
CH INPUT PAD SW 26 dB
CH INPUT GAIN control 44 dB variable
ST CH INPUT GAIN control 40 dB variable (ST CH A INPUT)
30 dB variable (ST CH B INPUT)
CH INPUT High Pass Filter 12 dB/octave roll-off below 20–400 Hz at −3 dB
point.
CH INPUT Equalization
+15, −15 dB maximum
HIGH 1k–20 kHz (peaking, Q=0.667)
HIGH-MID 400–8 kHz (peaking, Q=1.41/2.88)
LOW-MID 80–1.6 kHz (peaking, Q=1.41/2.88)
LOW 30–600 Hz (peaking, Q=0.667)
General specifications
ST CH INPUT Equalization
+15, −15 dB maximum
HIGH 20 kHz (peaking, Q=0.667)
HIGH-MID 3 kHz (peaking, Q=1.41/2.88)
LOW-MID 800 Hz (peaking, Q=1.41/2.88)
LOW 50 Hz (peaking, Q=0.667)
Phantom Power +48VDC is applied to balanced inputs (via 6.8 kΩ current-limiting/
isolation resistors) for powering condenser microphones ; may be turned
ON or OFF via rear-panel phantom Master switch.
When Master is ON, individual channels may be turned ON or OFF via
+48V switches (with red LED) on each input channel.
CH LED Indicators
PEAK LED (red) built into each CH INPUT turns on
when pre-Fader level reaches +18 dB.
NOM LED (yellow) built into each CH INPUT turns on
when pre-Fader level reaches 0 dB.
SIGNAL LED (green) built into each CH INPUT turns on
when pre-Fader level reaches −10 dB.
ST CH LED Indicators
PEAK LED (red) built into each ST CH INPUT turns on
when pre-Fader [L+R] level reaches +18 dB.
NOM LED (yellow) built into each ST CH INPUT turns
on when pre-Fader [L+R] level reaches 0 dB.
SIGNAL LED (green) built into each ST CH INPUT turns
on when pre-Fader [L+R] level reaches −10 dB.
Oscillator/Noise
Switchable sine wave @ 100 Hz, 1 kHz or 10 kHz (1% T.H.D. @ +4 dB
output), or pink noise.
Scene Memory
Direct Scene Memory recall switches (1–8)
Switchable Scene Memory recall (1–128)
VU Meters
12 illuminated meters
(0VU= +4 dB output @ 600 Ω load)
#1 ; MIX1 / MIX9 / MATRIX1
#2 ; MIX2 / MIX10 / MATRIX2
#3 ; MIX3 / MIX11 / MATRIX3
#4 ; MIX4 / MIX12 / MATRIX4
#5 ; MIX5 / MIX13 / MATRIX5
#6 ; MIX6 / MIX14 / MATRIX6
#7 ; MIX7 / MIX15 / MATRIX7
#8 ; MIX8 / MIX16 / MATRIX8
#9 ; STEREO A L
#10; STEREO A R
#11; STEREO B L / CUE L
#12; STEREO B R / CUR R
VU Meter Peak Indicators
LED(red) built into each VU meter turns on when output signal is above
the level 3 dB lower than clipping level.
Dimension
Height 265 mm (10-6/7”)
Depth 874 mm (34-3/8”)
Width 56C: 2571 mm (101-1/4”)
40C: 2043mm (80-7/16”)
24: 1515mm (59-5/8”)
Weight 56C: 128 kg (282.2 Ibs.), 40C: 108 kg (238.1 Ibs.), 24: 85 kg (187.4 Ibs.)
Accessory
Connecting cable (3m) × 1
●
0 dB is referenced to 0.775 Vrms.
*1 Hum & Noise are measured with a 6 dB/octave filter @ 12.7 kHz;equivalent to a
20 kHz filter with infinite dB/octave attenuation.
All specifications subject to change without notice.
http://www.yamaha.co.jp/english
http://www.yamaha.co.jp/product/proaudio/homeenglish/
YAMAHA Web Site
This document is printed on chlorine free (ECF) paper.