Input Characteristics; Frequency Responses - Electro-Voice PSX1000 Service Manual

INPUT CHARACTERISTICS

Mixer under nominal condition with nominal output level at the mixer outputs and with input sensitivity, gain,
channel faders, and master fader set to their maximum position.
INPUT
MIC
MONO LINE
STEREO LINE
INSERT RET. CHANNEL
INSERT RET. MASTER
EQ IN
POWER AMP
2TRACK RET.
STEREO RET.
OUTPUT CHARACTERISTICS Mixer
OUTPUT
INSERT SEND CHANNEL
INSERT SEND MASTER
MAIN OUT
EQ OUT
MONO OUT
AUX ½ SEND
AUX3 SEND
REC. SEND
PHONES
LAMP
OUTPUT CHARACTERISTICS Power Amplifier
Nominal Nominal
Input Voltage Load
at the Power Impedance
Amp In
8 Ω
+ 6 dBu
4 Ω
+ 6 dBu
)1 measured with a Dynamic Headroom-Test Signal in compliance to IHF-A: 1 kHz Burst, 20ms On, 480 ms
STABILIZING of the Power Amplifier
Single Channel, Standard Output Voltage
Stabilizing
Stabilizing Level

FREQUENCY RESPONSES

Amplification Frequency Response (-3 dB drop compared to the level at the standard frequency of 1kHz) :
Input
POWER AMP IN
MIC
LINE
others
Nominal Input Input Sensitivity
Level (dBu)
- 60 ... - 10 -74dBu(155µV)
- 40 ... + 10 -54dBu(1.55mV)
- 20 ... + 10 -34dBu(15.5mV)
0
- 6
+ 6
+ 6 +6dBu(1.55V)
+ 4 -9dBu(275mV)
0
Nominal Output
Level (dBu)
0
- 6
+ 6
+ 6
+ 6
0
0
- 7.8 ( - 10 dBV )
- 2 / 200 ohms + 18 / 200 ohms
12 V DC/ 2.4 W
Nominal Maximum
Output Power, Output Power,
Single Channel Single Channel,
THD < 0.2% THD=1%
350 W 430 W
700 W 760 W
Output
SPEAKER L&R
MAIN OUT L&R
SPEAKER L&R
all other outputs
Max. Input
Level (dBu)
+ 11
+ 30
+ 30
- + 20
- + 20
- + 20
+ 20
+ 14
- + 14
Max. Output Output
Level (dBu) Impedance
+ 20 75 ohms
+ 20 75 ohms
+ 20 75 ohms
+ 20 75 ohms
+ 20 75 ohms
+ 20 75 ohms
+ 20 75 ohms
+ 16 1 k ohms
47 ohms
---
Maximum Nominal
Single Output
Channel Voltage
Output
Power )1
480 W 52.9 V
880 W 52.9 V
8 ohms
0.56 %
0.05 dB
f (u) b - 3 dB
30 Hz
15 Hz
15 Hz
15 Hz
2 / 12
Input
Impedance Balancing
1.8 k ohms balanced
18 k ohms balanced
18 k ohms balanced
> 3.3 k ohms unbalanced
> 2.2 k ohms unbalanced
> 8 k ohms balanced
18 k ohms balanced
> 8 k ohms unbalanced
> 15 k ohms balanced
Output Balancing
unbalanced
unbalanced
GND-Sense
GND-Sense
GND-Sense
GND-Sense
GND-Sense
unbalanced
unbalenced
--- ---
Maximum Maximum
Idling Output
Output Voltage
Voltage Dual Channel
THD=1%
63 V 2 x 390 W
63 V 2 x 660 W
4 ohms
1 %
0.09 dB
f (o) - 3 dB
50 kHz
90 kHz
60 kHz
60 kHz
Input