Electro-Voice PSX 2000 User manual

^Etectrol/bice®
^ PSX 2000 STEREO POWERED MIXER

IMPORTANT SAFETY INSTRUCTIONS
The lightning flash with arrowhead symbol, within an equi¬
lateral triangle is intended to alert the user to the presence
of uninsulated "dangerous voltage” within the product's
enclosure that may be of sufficient magnitude to constitute
a risk of electric shock to persons.
The exclamation point within an equilateral triangle is in¬
tended to alert the user to the presence of important
operating and maintance (servicing) instructions in the
literature accompanying the appliance.
1. Read these instructions before instaiiing unit.
2. Keep these instruction for future reference.
3. Heed all warnings contained in these instructions.
4. Do not use this apperatus near water.
5. Do not block any ventilation openings.
Install in accordance with the manufactures instructions.
6. Refer all servicing to qualified service personnel.
CAUTION
ns OF ELEcrnc 9«xk
DO NOT OPEN
WARNING: TO REDUCE T>C RS OF F*E OR ELECTRC 9<ICK.
DO NOT EXPOSE THB APn.lANCE TO RAW OR MCBTURE.
AVIS RSOU^ DE CHX ELECTROUE. NE PAS OUVRR
A
2

SPECIFICATIONSrPSX 2000
measuring standards : lEC 268, IHF-A
level : 0 dBu = 775 mV (RMS) frequency : IkHz
MEASURING CONDITIONS
1. R ated setting:
gain controls at UNITY GAIN 0 dB (20 dB MIC), all faders at 0 dB-position, master fader at -h6 dB, all other
controls at their center position
input
source impedance
gain control
LINE
50 ohms
MIC
150 ohms
3. Generally, distortion is distinguished as THD+noise. The bandwidth (MBW) is 80 kHz. The mixer is set to
rated output power.
DUT
U(I) at the corresponding
input
U(0) at the measured
output
frequencies
LINE
+10 dBu
+ 16 dBu
1 kHz, 10 kHz
MIC
-10dBu
+ 16 dBu
1 kHz. 10 kHz
Power Amplifier + 6 dBu
250 watts / 8 ohms
20 Hz.... 20 kHz
4. Measurement of the frequency response at 20 dB below maximum level.
5. Crosstalk and attenuation at rated setting U (A) - 16 dBu with band pass filter, variable.
Input
U(E)
output
gain control |
LINE
+ 16 dBu Main Out
MIC
-50dBu Main Out Gain max. |
POWER SUPPLY
1. mains voltage:
2. rated mains supply:
3. rated mains frequency:
4. maximal permissible deviation:
AC
120 volts
50 - 60 Hz
-30%...+10%
5. power consumption (both channels outputting a 1 kHz sine signal, respectively pink-noise)
power consumption at RL - 4 ohms
PSX 2000
power consumption, no load 80... 120 watts
rated power consumption
1600 watts
standard power consumption 520 watts
maximum power consumption (THD - 1 %) 1600 watts
power consumption at 1/8 of the maximum output
600 watts
power consumption at 1/3 of the maximum output
850 watts
INPUT CHARACTERISTICS
Mixer at rated setting, rated output levels, input sensitivity, gain, channel faders and master faders at maximum.
INPUT rated input
level (dBu)
input sensitivity
max. input
level (dBu)
input
impedance
input stage
MIC -60...-10 +11
1.8 kohms
balanced
MONO LINE
-40...+10
+30 18 k ohms
balanced
STEREO LINE
-20... +10
BtglSIsBWlHBVqi
+30
18 kohms
balanced
INSERT RET. CHANNEL 0
-
+20 >3.3 k ohms
unbalanced
INSERT RET. MASTER
-6
-
+20
>2.2 k ohms unbalanced
EQIN
+6
—
+20
>8 k ohms
balanced
POWER AMP
+6
+6 dBu (1.55 V)
+20
18 kohms
balanced
2TRACKRET.
+4
—
+14 >8 k ohms unbalanced
STEREO RET. 0
-
+14
>15 k ohms
balanced
3

OUTPUT CHARACTERISTICS mixer
OUTPUT rated output level
(dBu)
output impedance
output stage
INSERT SEND CHANNEL 0 + 20
75 ohms
unbalanced
INSERT SEND MASTER -6 + 20
75 ohms
unbalanced
MAIN OUT
+ 6
+ 20 75
ohms
GND-sense
EQ OUT
+ 6 + 20
75 ohms GND-sense
MONO OUT + 6 + 20
75 ohms
GND-sense
AUXV^SEND 0 + 20 75
ohms
GND-sense
AUX3SEND 0
+ 20
75 ohms
GND-sense
REC. SEND
+ 16
1 k ohm
unbalanced
PHONES
-2 / 200 ohms + 18 / 200 ohms
47 ohms
unbalanced
LAMP
12 V DC/2.4 watts —
— —
OUTPUT CHARACTERISTICS power arnpimer
rated input
voltage at
Power Amp In
rated load
impedance
rated output
power, single
channel
THD<0.1 %
max. output
power, single
channel
THD = 1 %
max
single
channel
output
power)^
rated
output
voltage
max.
output
voltage, no
load
max.
output
voltage
THD = 1 %
+ 6 dBu
8 ohms
250 watts
340 watts
360 watts
44.7 V
58 V 53.6 V
+ 6 dBu
4 ohms 500 watts
570 watts 680 watts
44.7 V 58 V
47.7 V
measured with Dynamic Headroom test signal, according IHF-A: 1 kHz Burst, 20 ms On, 480 ms Off
STABILIZING of the power amplifier
Single channel, nominal output voltage
8 ohms
4 ohms
stabilizing
0.57%
1 %
stabilizing level
0.05 dB 0.09 dB
FREQUENCY RESPONSE
amplificatioD frequency response (-3 dB dropped below the level of the nomin^ frequency IkHz):
input output f(o) at-3dB
f(o)at-3dB
POWER AMP IN
SPEAKER L&R 45 Hz 54 kHz
MIC MAIN OUT L&R
15 Hz 90 kHz
LINE
SPEAKER L&R
15 Hz 60 kHz
others all
other outputs
15 Hz 80 kHz
distortion-limited transmission range (effective bandwidth) of the power amplifier:
1 Input
f(u)
MEM
notes
25 Hz 60 kHz
THD =0.4 %, 1/2 rated output capacity at 4 ohms, MBW=500 kHz
NON-LINEAR AMPLITUDES (single channel)
power amplifier
input = Power Amp In
power amplifier
R(L) = 8 ohms
power amplifier
R(L) = 4 ohms
notes
rated overall distortion
<0.03%/0.l %
<0.05 %/0.2%
MBW=80 kHz,
f=lkHz/10kHz
standard overaU distortion
<0.03 %/<0.03% <0.05%/<0.05%
MBW=80 kHz,
f=lkHz/10kHz
IMD-SMPTE <0.01 %
<0.015%
60 Hz, 7 kHz
DIM 30 <0.01 %
<0.015%
3.15 kHz, 15 kHz
DIM 100 <0.01 %
<0.015%
3.15 kHz, 15 kHz

mixer section THD+N
f = lkHz
THD+N
f=10kHz
LINE Input -> MAIN OUT
< 0.006 % <0.02%
UNE Input -> MONO OUT
< 0.006 % < 0.02 %
LINE Input -> AUX SEND
< 0.01 % < 0.02 %
LINE Input -> EQ OUT < 0.006 % < 0.02 %
MIC Input - INSERT SEND < 0.002 % < 0.002 %
MIC Input - MAIN OUT
< 0.006 %
< 0.02 % ■
2TRACK-> MAIN OUT < 0.006 % <0.015%
STEREO RET. -> MAIN OUT < 0.006 %
<0.015 %
CROSSTALK AND ATTENUATION
fader attenuation
MONO CHANNEL
STEREO CHANNEL
MASTER
MONO
AUX/FX
rotary control attenuation
AUX
2 TRACK RETURN
STEREO RETURN
switch attenuation
f=lkHz
>80dB
>80dB
>80dB
>80 dB
>80dB
>80 dB
>60dB
>90 dB
>90dB
f=10kHz
STANDBY
>90 dB
PEL
>80 dB
crosstalk
Endstufe L/R
> 60 dB
Kanal - Kanal >70 dB
common mode rejection
CMRR MIC
>80 dB
CMRRLINE
>40 dB
CMRR STEREO LINE
>40dB
CMRR MASTER Inputs
>40dB
>80 dB
>80dB
>80dB
>80 dB
>65dB
>60 dB
>90dB
>80dB
>80dB
>70 dB
>60dB
>70dB
>60dB
>40dB
>40dB
>40dB
Power Amp In
NOISE
- U (F) = hum & noise, unweighted with B = 22 Hz ... 22 kHz, RMS (TEC 268-1)
- U (G) = noise voltage, frequency weighting filter according to CCIR-468-3, quasi-peak-rated (lEC 268-1)
• U (A) = interfering voltage A-weighted, dB (A), RMS (EEC 268-1)
- S/N ratio maximum o utput voltage at 4 ohms 47.7 volts (+35.8 dBu) in relation interfering voltage A-weighted
measurement
power amplifier
residual noise
total noise
MASTER
typical mixer noise
U(F) U(A) U(G)
-67 dBu -69 dBu -56 dBu
-90 dBu -92 dBu -79 dBu
-87 dBu -88 dBu -75 dBu
-81 dBu -83 dBu
-68 dBu
-67.5
dBu
-69.5
dBu
-56.5
dBu
-57 dBu
- 59 dBu - 46 dBu
output
SPEAKER
OUT
MAIN OUT MASTER at
minimum
MASTER at 0
dB, channel
down.
all faders at 0
dB, Unity Gain
130 dBu
INSERT Gain max.

power amp DAMPING FACTOR
power amp SLEW RATE
INDICATORS PEAK (channel)
SIGNAL (channel)
MAIN 10-segment
PEAK (FX 1/2)
PHANTOM POWER
:>200
: >20 V/ps
: 6 dB below maximum level
: 25 dB below PEAK-indication
: 27 dB ... +6 dB (measured in dB at the MAIN OUT)
: 6 dB below maximum level
: 24 volts dc, commonly switched
SOUND CONTROLS
LO (shelving)
MID (peaking)
HI (shelving)
MONO (MIC) INPUT
±15 dB/60Hz ±15 dB
100 Hz... 8 kHz
Q=1
±15 dB/12kHz
STEREO INPUT
±15 dB / 60 Hz
±15 dB / 12 kHz
GRAPHIC EQUALIZER (master section)
2x7 band: 80 Hz, 250 Hz, 630 Hz, 2.5 kHz, 4 kHz, 8 kHz, 16 kHz; ±10 dB, Q = 1.4
FILTER LO-CUT; f = 80 Hz; 18 dB/oct. (monaural inputs)
VOICING FILTER (monaural inputs)
FEEDBACK FILTER (AUX3) controUable 80 Hz ... 7.7 kHz / notch / -9 dB
r.
FX-SECTION 2 separately controllable stereo FX-units, 18 bit, UP/DOWN-keys, each with
99 program presets (delay, reverb, modulation, and mixed programs)
DIMENSIONS AND WEIGHT
PSX 2000
desktop model
PSX 2000
rack mount model
Width
508.5 mm
483 mm
Height
210.3 mm
443.7mm(10H.E.)
Depth
478.7 mm 195.2 mm
Weight
20 kg 21.5 kg
EXTENSION KITS NRS 90 220 19" rack-mount-ears for the PSX 2000 No. 112 698
DCN 112700 gooseneck lit-light, 12 voIts/2.4 watts, 12", XLR-connector
DCN 110693 foot switch FSl I
NOTE when mounting the PSX 2000 in a rack shelf system:
To protect the appliance against thermal overload, a space of at least 2 HU has to be left directly below and
above the PSX 2000 which can be covered using dummy plates. In case the rack shelf is equipped with front and
rear covers, these have to be detached.
6

MEASUREMENT DATA PSX 2000, complete
measuring conditions:
measurement tolerance:
test frequency:
reference level:
source impedance LINE:
source impedance MIC:
load impedance mixer outputs:
load impedance headphones:
load impedance power amplifier:
EQ, PAN, BAL controls:
FADER:
gain controls:
AUX, LEVEL controls:
measurement standards:
safety class:
test voltage IEC65:
U (F) = hum & noise
U (G) = noise voltage
U (A) = interfering voltage
AX = ±1.5dB
f=lkH2
U = 775mV(0dB)
R(Q) = 50n
R(Q)=150Q
R(L) = 100 m
R(L) = 2x200D
R(L) = 4a m,
center position
0 dB-position
Unity Gain = 0 dB (MIC 20 dB )
center position
lEC 268, IHF-A
I
3000 Vrms
unweighted with B = 22 Hz ... 22 kHz, rms (EEC 268)
frequency weighting filter according to CCIR-468-3, quasi-peak-
rated (lEC 268)
A-weighted, dB (A), rms (lEC 268)
• The printed board assembly is provided with service terminals. The assignment of these terminals complies to
the following table:
CNSERV 1 Belegung CNSERV 2
Belegung
1 -Vcc 1 LIML
2
BIAS +R
2 -15V
3
BIAS-R 3 LIMR
4
FAN-Voltage
4
+5V
5 +Vcc 5
+24V
6 BIAS + L 6
+15V
7 BIAS-L 7 TEMP -Heatsink
8
Temp +Heatsink
8
GND
1. operating voltage: U(B) = 120V / 50Hz ... 60 Hz
2, critical tolerance (operating voltage): - 30% .... +10%
3. power consumption (both channels driven):
power consumption
current
no load
80....120W
—
rated operation (RL = 4 ohms) @ 2 x 470 watts
1600W
17.7 A
4. adjustments:
4.1 EDLE-CIRCUIT CURRENT ADJUSTMENT:
A DC-voltmeter has to be connected to the BIAS test points to adjust the idle-circuit current via the trimmer on
the printed board assembly 84170. Adjustment of both power amplifier channels L&R.
■ EIIMSSSIH
test point 1
test point 2
U(DC)
BIAS-trimmer
BIASL
CNSERV1.6
CNSERV1.7
4 mV
VR301
BIASR CNSERV1.2 CNSERV1.3
4 mV VR501
Adjustment of the idle-circuit current has to be performed under normal room temperature conditions. If the
power amplifier had been operated before, the appliance has to rest for several hours to cool off.
7

4.2 V GA-OFFSET:
You have to rhythmically open and short-circuit the CNSERV2.1 and CNSERV2.2 for the left channel
respectively the CNSERV2.3 and CNSERV2.2 for the right channel, that are located on the printed board
assembly 84170, and adjust the power amplifier output signals for minimal offset, using VR300 respectively
VR500 (using an oscillograph it has to be set for minimal peak or for audibly minimal loudness of the
interference pulse).
5. function test:
5.1 OUTPUT - offset voltage
DC-voltage measurement at the speaker outputs CHANNEL L/R with U (DC) < ±10 mV.
5.2 LIMITER:
5.2.1. attenuation test
Drive each channel with a 1 kHz signal undl ou^ut voltage = 50 volts (no load). Increase the input voltage by 10
dB. The LIMITER LED will light and the output voltage is increased by about 1 dB to 57 volts. The signal is
slightly driven into clipping with a distortion rate of the limited signal: THD = 1.0 % ... 1.5 %. Further
increasing the input signal up to +20 dBu should not result in excessive higher clipping.
5.2.2. Attack and release
• test the amplifier channels separately: testing should be performed without load resistors.
1. ) Drive the power amplifier inputs with a burst signal (f = 1 kHz, 10 cycles, rate: 0.5 sec.) and U (in) = +16
dBu.
2. ) Observe the outputt signal via an oscilloscope. After 3-4 signal periods, the limiter attenuated the "heavy”
distortion in the beginning to a minor rest distortion (THD of 1.0 % ... 1.5 %).
attack time: 3 - 4 ms
release dme: 30 - 40 ms
5.3 CUT-IN DELAY:
After turning on the appliance using the power-on switch, it takes about 2 seconds until the input signal is present
on the power amplifier’s outputs. The relay E2 on the printed board assembly 85267 bridges the NTC-resistor for
limiting the inrush current.
5.4 FAN CONTROL:
When switching the power amplifier on, the internal fan coolers will run for approximately 2 seconds.
Afterwards, they stop, provided that the power amplifier is "cold". During the power amplifier is operated with
no load (power on, no input signal), the ventilators switch back and forth between SLOW-mode and OFF-mode,
depending on the heat sinks’ temperature. When unplugging the CN14 connector, the fans will run on FAST
speed. Ventilator-voltage-27 volts DC, measured between CNSERV1.4 and CNSERV2.8.
5.5 SOAR PROTECTION CIRCUIT TEST:
Drive each channel up to 45 volts with a load of 4 ohms. Connect a 1 ohm resistor parallel. The protection
circuit responds and tries to re-activate continuously! The protect-LED lights. Repeat the test with a load of
2ohms. The power amplifier has to stay in operation.
5.6 SHORT-CIRCUIT CURRENT-LIMITING TEST:
Test the power amplifier channels separately, without load:
- drive the power amplifier inputs with a burst signal (f = 1 kHz, 10 cycles, rate: = 0.5 sec.) and U (E) = +6 dBu.
- include an 1 ohms load resistor.
- the short-circuit current-limiting circuitry attenuates the output voltage at the load resistor symmetrically
(observe on the oscilloscope) to a peak voltage of 25 V - 27 V (approx. 25 A - 27 A maximum peak current).
5.7 DC-VOLTAGE PROTECTION CIRCUIT TEST:
This test can only be performed when measuring single printed board assemblies.
Test the power amplifier channels separately:
- drive each channel of the power amplifier with a test signal (f = 4 Hz) applied to the FET Q316 respectively
Q516 Drain, without load.
- when reaching an input voltage of approximately 10 dBu, the protection circuit responds and tries to re-activate
continuously! The protect-LED lights.
- Repeat the test using a test signal of f = 14 Hz. The power amplifier has to stay in operation.
8

5.8 fflGH FREQUENCY PROTECTION CIRCUIT TEST:
Caution: Operate the power amplifier under all circumstances without load resistors connected. Apply to one
power amplifier channel at the time a sine burst of f = 80 kHz (40 ms ON, 960 ms OFF) with +20 dBu. The
protection circuit has to respond and the power amplifier tries to re-activate continuously. The PROTECT-LED
blinks rhythmically. Repeat the test with f = 50 kHz. The power amplifier has to stay in operation.
6. Level
All level controls within the simal path fully open.
Input Output
U(out)
remarks
MIC Mono -60 dBu INSERT Mono OdBu
Gain max.
LINE Mono
-54 dBu
SPEAKER L&R
44.7 V
EQ Bypass
INSERT RETURN Mono
-14 dBu
SPEAKER L&R
44.7 V
MIC Stereo
-60 dBu MAIN INSERTS
+4 dBu
LINE Stereo L/Mono
-34 dBu
MAIN OUTPUT L&R
+6 dBu
LINE Stereo R -34 dBu
MAIN OUTPUT R +6 dBu
STEREO RET. L/Mono
-24 dBu
+2 dBu
EQON
STEREO RET. R
-24 dBu
HgCQjSSSiSiHH
+2 dBu
EQON
2 TRACK RET.
-24 dBu
MONO OUTPUT OdBu
LINE Mono
-44 dBu
REC SEND
OdBu
2 TRACK RET. -20 dBu AUX3 SEND -12 dBu
LINE Mono
-60 dBu
AUXl SEND +20 dBu
.
LINE Mono
-60 dBu
AUX2SEND
+20 dBu
LINE Mono
-60 dBu AUX3SEND +5 dBu AUX3PRE
LINE Mono -60 dBu
AUX3SEND
+15 dBu AUX3 POST
LINE Stereo L/Mono
-44 dBu AUX3SEND
+0 dBu
AUX3PRE
LINE Stereo L/Mono -44 dBu
AUX3SEND
+8 dBu AUX3POST
LINE Stereo L/Mono
-44 dBu
AUXl SEND +13 dBu FXloff
LINE Stereo L/Mono
-44 dBu
AUX2SEND
+13 dBu
FX2off
LINE Mono
-44 dBu
PHONES L&R
+8 dBu PFL CHANNEL engaged
LINE Stereo L/Mono -24 dBu
PHONES L&R +8 dBu
PFL CHANNEL engaged
LINE Stereo L/Mono
-24 dBu
PHONES L&R +18 dBu
PFL MASTER engaged
LINE Stereo L/Mono
-34 dBu
PHONES L&R +11 dBu
POWER AMP INPUT L&R
+ 6 dBu
SPEAKER L&R
44.7 V no
distortion I
7. Amplitudes and non-linearity
• measurement of the power amplifier with an 8 ohms load resistor, one channel driven.
• MBW = 80 kHz.
• DIM 30: 3.15 kHz, 15 kHz
• SMPTE:60H2,7kH2,4:l
input
output
THD+N
@ IkHz
THD+N
@ lOkHz
DIM 30 SMPTE remarks
MIC Mono/Stereo
EQ OUTPUT L&R
<0.01 %
<0.01 % U(out) = 16dBu
LINE Mono
EQ OUTPUT L&R <0.005% <0.02%
< 0.01 %
<0.01 % U(out) = 10 dBu
LINE STEREO EQ OUTPUT L&R
<0.005 % < 0.02 % < 0.01 % < 0.01 %
U(out) = 10 dBu
POWER AMP IN SPEAKER OUT L&R <0.03% <0.1 % <0.01% < 0.01 %
Pab = 250W
9

i
B
■

FEEDBACK FILTER AUX3 Power Amplifier
8.2 cut-off frequencies -3 dB @ 1 kHz
All level controls within the signal path fully open.
Input
Output
f(u) f(0)
MIC Mono
SPEAKER L&R
52 Hz
83 kHz
MIC Stereo
SPEAKER L&R
52 Hz 83 kHz
LINE Mono
SPEAKER L&R 52 Hz
47 kHz
LINE Stereo
SPEAKER L&R 45 Hz
33 kHz
Power Amp In
SPEAKER L&R 45 Hz
95 kHz
LINE Stereo
AUX3 10 Hz
33 kHz
LINE Stereo AUX2 12 Hz 33 kHz
LINE Stereo
AUXl
12 Hz
33 kHz
LINE Stereo
MONO OUT
8 Hz 33 kHz
LINE Stereo REC.SEND 8 Hz 30 kHz
MIC Mono
INSERT SEND 50
Hz 100 kHz
9. Noise & Hum
- U (F) = extraneous voltage, unweighted with B = 22 Hz ... 22 kHz, rms (lEC 268-1)
- U (G) = noise voltage, frequency weighting filter according to CCIR-468-3, quasi-peak-rated (lEC 268-1)
- U (A) = interfering voltage A-weighted, dB (A), rms (lEC 268-1)
Input
Output
U(F)
dBu
U(G)
dBu
U(A)
dBu
GAIN
dB
EIN(A)
dBu
S/N-
R.
dB
Remarks
Power Amp
In
-67
-56 -69 29.2
—
104
—
-80
■
—
■
master up, EQ by-pass,
channel down
—
EQOUT
■
—
■
master down, EQ by-pass,
channel down
—
EQOUT
-88
-77 -90
H
—
master down, EQ on, channel
down
MIC Mono
MAIN -49 81 130
—
MASTER, CHANNEL and
GAINup,R(Q) = 150£2
MIC Mono
MAIN -74
-63 -75
30 105
—
MASTER, CHANNEL and
GAIN down, R(Q)= 150 n
MIC Stereo
MAIN
-48 82 130
—
MASTER, CHANNEL and
GAIN up
11

10. operation voltages and service test points
voltage measured at the corresponding pin referr
84170
Power Amp
CNSERV 1 assignment
1
-Vcc
11. Heat sink temperature
to GND CNSERV2.8_
measured in idle interfering voltage
condition and ripple-voltage
' see also paragraph 11
heat sink temperature
Udc CNSERV1.8 (+)
respectively CNSERV2.7 (-)
The critical shut-off point is reached at approx. 130°C; the power amplifier enters the protection mode.
80®C lOO^C 120''C UO'C
9.5V
11 V
13 V
14V
12, Phantom power
When the +24 volts-button is engaged, the measured DC-vollage on pin 2 referred to pin I, respectively on pin 3
referred to pin I of the corresponding XLR-type input connector has to be between +24 ... +26 volts.
12

13. F X unit
13.1 L evel
- AUXl/EXl respectively AUX2/FX2, AUX3, channel fader, AUXl/FXl Send respectively AUX2/FX2 Send,
FXl to AUX3 respectively FX2 to AUX3, AUX3 fader, master L&R-fader fiilly up.
- FXl ON-switch respectively FX2 ON-switch set to ON. Selected FX-preset 0/0.
Input
Output
Remarks
MIC MONO
-40 dBu
MAIN OUTPUT LAR
+18 dBu Gain min.
MIC MONO
-40 dBu
AUX3SEND
+15.5 dBu
Gain min. AUX3 PRE.
MIC STEREO
-40 dBu
MAIN OUTPUT L&R
+15 dBu
Gain Mic min.
MIC STEREO -40 dBu
AUX 3 SEND
+12.5 dBu Gain Mic min. AUX3 PRE.
Line STEREO L/MONO
-20 dBu
MAIN OUTPUT L&R
+15 dBu
Line Trim min.
Une STEREO L/MONO -20 dBu
AUX 3 SEND
+12.5 dBu
Line Trim min. AUX3 PRE.
Line STEREO R -20 dBu
AUX 3 SEND
+6.5 dBu
Line Trim min. AUX3 PRE.
Line STEREO R -20 dBu
AUX 3 SEND
+6.5 dBu Line Trim min. AUX3 POST
13.2 N o ise & Hum
- U (F) =hum, unweighted with B = 22 Hz ... 22 kHz, rms (lEC 268-1)
- U (G) = noise voltage, frequency weighting filter according to CCIR-468-3, quasi-peak-rated (lEC 268-1)
- U (A) = interfering voltage A-weighted, dB (A), rms (lEC 268-1)
Output
U(F) Remarks
MAIN OUTPUT L&R -58 dBu -49 dBu -60 dBu
MASTER + FXl respectively FX2 faders max. Prog. 0
AUX3 SEND
-60 dBu -52 dBu
-64 dBu AUX3-fader, FXl respectively FX2 to AUX3 max. Prog. 0
MAIN OUTPUT L&R
-59 dBu -49 dBu
-60 dBu MASTER + FXl faders max. Prog. 5
MAIN OUTPUT L&R -58 dBu -49 dBu
-60 dBu MASTER + FX2 faders max. Prog.55
13.3 F unctioning test
Drive the FX 1 and the FX 2 units. Listen to the signal while switching the presets.
7-segment LED-Display: All bars have to light at the same intensity.
The FX-unit should not introduce extreme digital interference or extensive noise to the audio signal.
During the (ON/OFF) switching of the FXl/2 units, no switching noise should occur.
Switch the FX unit via foot switch..
14. Gooseneck-Lamp connector
Connect a 40 ohms / 10 watts resistor to the pins 2 and 3 of the LAMP-connector. The measured voltage should
indicate 12 volts DC.
15. Displays
At the mentioned input-voltage the LED starts lighting. Gain and AUXl/2 controls set to their maximum with a
tolerance of ±2 dB.
Display
Input
U(E)/dBu
SIGNAL of a monaural channel
LINE Mono
-52
PEAK of a monaural channel
LINE Mono
-26
SIGNAL of a stereo channel
LINE Stereo L/Mono
-32
PEAK of a stereo channel
LINE Stereo L/Mono
-6
PEAK FXl/FX2
LINE Mono
-65
The display within the master section indicates the corresponding output level at the MAIN OUT; in dBu. Check
the indicated display-value of the MAIN OUT for every LED.
13

AMP
RIGHT

90