Frequency Response; Noise Interference; Amplitude Non-Linearity - Electro-Voice P3000 Service Manual

F.

FREQUENCY RESPONSE

• -3 dB level drop, referenced to the level at the standard frequency of 1 kHz
• the power amplifier's border frequencies are at 13 Hz and 40 kHz respectively, referenced to -1 dB
Amplification frequency response
Input
INPUT A/B
INPUT A/B
Distortion-limited transmission range (performance bandwidth)
• THD = 0.1 %, 1/2 nominal power at 4 ohms, MBW = 500 kHz
Input
INPUT A/B
G. PHASE RESPONSE
H. INPUT IMPEDANCE
I.

AMPLITUDE NON-LINEARITY

nominal overall distortion
standard overall distortion
IMD-SMPTE
DIM 30
DIM 100
J. CROSSTALK - at f = 1 kHz
K. DAMPING FACTOR - internal at f = 1 kHz
L. SLEW RATE - internal
M.

NOISE INTERFERENCE

- U(F) = external voltage un-weighted with B = 22 Hz ... 22 kHz, effective value (IEC 268-1)
- U(G) = noise voltage, frequency-weighting filter according to CCIR-468-3, quasi peak weighted (IEC 268-1)
- U(A) = interference voltage A-weighted, dB(A), effective value (IEC 268-1)
- Signal-to-noise ratio referenced to a nominal output voltage of 69.3 V (1200W/4ohms)
- HI/LO-CUT ON, GND LIFT = GROUNDED
Interference
output voltage
U(F) < 615µV
U(G) < 3.65 mV
< 490µV
U(A)
i.s.=0dBu
< 245µV
U(A)
i.s.=6dBu
< 110µV
U(A)
Gain=26dB
The S/N ratio (A-weighted) at max. output voltage at 4Ω is >103 dB.
N. DIMENSIONS
Height : 132.5 mm (3 HU)
Width : 483 mm
Depth : 426 mm
O. WEIGHT m = 29 kg
Output
SPEAKER A/B
SPEAKER A/B
Output
SPEAKER A/B
±30° (20 Hz - 20 kHz, HI/LO-CUT off)
20 kΩ (20 Hz ... 20 kHz)
Amplitude non-linearity
<0.05 %
<0.02 %
<0.01 %
<0.01 %
<0.01 %
less than
at f = 100 Hz
S/N ratio
> 101 dB
> 85.5 dB
> 103 dB
> 109 dB
> 116 dB
2
f (u) f (o)
<10 Hz 75 kHz
20 Hz 35 kHz
f (u) f (o)
<10 Hz 48 kHz
Equivalent input Equivalent input
interference interference level
voltage
< 6.9µV
< 41µV < -85.5 dBu
< 5.5µV
< 5.5µV
< 5.5µV
Remarks
HI-LO-CUT Off
HI-LO-CUT On
Remarks
HI-LO-CUT Off
Remarks
MBW = 80 kHz, f = 1 kHz
MBW = 80 kHz, f = 1 kHz
60 Hz, 7 kHz
3.15 kHz, 15 kHz
3.15 kHz, 15 kHz
<-70 dB
>300
>400
>40 V/µs
Residual
interference
output voltage
< -101 dBu < 435µV
< 1.55mV
< -103 dBu < 345µV
< -103 dBu < 170µV
< -103 dBu < 90µV