Electro-Voice P1201 Bedienungsanleitung

P 1201

P 1202

MODULAR PRECISION SERIES

SERVICE

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Technical Specifications: X1201 / P1201

Amplifier at rated conditions, 8Ωoutput load, unless otherwise specified.

X1201 / P1201

Load Impedance

8 Ω

4 Ω

2 Ω

Maximum Midband Output Power

THD = 1%, 1kHz 750 W 1200 W 1600 W

Rated Output Power

THD < 0.2%, 20Hz ... 20kHz 500 W 1000 W --------

Max. Single Channel Output Power

Dynamic-Headroom, IHF-A850 W 1450 W 1700 W

Maximum RMS Voltage Swing

THD = 1%, 1kHz 86 V

Voltage Gain

at 1kHz 33 dB

Slew Rate

at 1kHz 40 V/µs

Power Consumption

at 1/8 maximum output power @ 4Ω870 W

Input Sensitivity

at rated output power @ 4Ω, 1kHz 1.4 V

THD at rated output power,

MBW = 80kHz, 1kHz < 0.05 %

IMD-SMPTE

60Hz, 7kHz < 0.08 %

DIM30

3.15kHz, 15kHz < 0.03 %

Frequency Response

-1dB, ref. 1kHz 13 Hz ... 45 kHz

Power Bandwith

THD = 1%, ref. 1kHz, half power @ 4Ω10 Hz ... 50 kHz

Input Impedance

20Hz ... 20kHz, balanced 20 kΩ

Damping Factor

at 100Hz / 1kHz, 8Ω> 300 / > 200

Signal to Noise Ratio

A-weighted, non internal summing mode 106 dB

Power Requirements 240V, 230V, 120V, 100 V, 50Hz ... 60Hz, factory configured

Protection Audio limiters, High temperature, DC, HF, Back-EMF,

Peak current limiters, Inrush current limiters, Turn-on delay

Cooling Front-to-rear, 3-stage-fans

Safety Class I

Dimensions

(W x H x D), mm 483 x 132.5 x 426

Weight 17 kg

Optional

Input transformer

NRS 90208 (121 641)

Rear-rackmount 15,5“

Rear-rackmount 18“ NRS 90235 (112 733)

NRS 90223 (112 701)

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MEASURED DATA X1201 / P1201

The measured data apply to the following appliances:

Unit Model Unit Number Mains Voltage Mains Frequency

X1201 112 736 230V 50 - 60 Hz

X1201 240V 50 - 60 Hz

X1201 100V 50 - 60 Hz

X1201 120V 50 - 60 Hz

P1201 170 149 230V 50 – 60 Hz

P1201 170 148 120V 50 – 60 Hz

P1201 170 148 100V 50 – 60 Hz

MEASURED DATA: X1201 / P1201

Printed boards name and corresponding EDP numbers:

Printed boards EDP numbers

100V 120V 230V 240V

81344 81344 81344 81344

84199 84199 84194

Printed board parts 84194 / 84199 Index

Amplifier - PCB 84194/1 / 84199/1

Bus - PCB 84194/2 / 84199/2

Main - PCB 84194/3 / 84199/3

LED - PCB 84194/4 / 84199/4

Testing Conditions – unless differently stated:

-Measuring tolerance: ∆X= ±1.5dB

-Measuring frequency: f = 1kHz

-Stated level values referred to: U= 775mV (0dBu)

-XLR – socket pin-assignment: PIN 1 = GROUND/SHIELD

PIN 2 = + INPUT

PIN 3 = - INPUT

-Source impedance for signal-feed via XLR – socket: R(Q) = 50Ω

-The printed board assembly 84194 / 84199 offers service connectors.

84194/2 / 84199/2

CNS1X 84194/2 / 84199/2

CNS2X 84194/1 / 84199/1

CN10 / CN11

PIN Assignment PIN Assignment PIN Assignment

1-Vcc 1LIM Switch CN10

2BIAS +HOT 2-15V 1FLOAT. Voltage

3BIAS -HOT 3SYMMETRY 2GNDA

4FAN Voltage 4 +15V 3 GNDA

5+Vcc 5GNDA CN11

6BIAS +COLD 6Speaker A 1LIM Switch

7BIAS -COLD 7Relay/Protect 2-15V

8TEMP Heat sink 8n.c. 3-15V

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1. Operating Voltage: U(B) = 230V 50Hz ... 60Hz / U(B) = 120V 50Hz ... 60Hz

2. Operating Voltage Deviation Range: -30% .... +10%

3. Power Consumption

- Driven with sine signal f = 1kHz

X1201 / P1201 Output Power

Idling Power Consumption 50 - 70 W

Maximum Power Consumption (RL=4Ω)1870 W 1200 W

Nominal Power Consumption (RL=4Ω)1730 W 1000 W

Standard Power Consumption (RL=4Ω)590 W 100 W

Power Consumption at 1/8 of the Max. Output Power 720 W 156 W

Power Consumption at 1/8 of the Max. Output Power

at 10 % Mains Overvoltage 870 W 180 W

4. Settings/Adjustments

4.1. IDLING CURRENT ADJUSTMENT

Connect a DC-voltmeter to the BIAS measuring points (on the printed board assembly 84194/2 / 84199/2, see

service connectors) and adjust the idling current via the trimmers VR101 / VR301 (on the printed board assembly

84194/1 /84199/1). Adjustment has to be performed for HOT / COLD U(DC) = 7.5mV and at normal room

temperature. If the power amplifier has previously been operated, it has to be given several hours of time for

regaining normal temperature.

4.2. FLOATING - SYMMETRY

Checking and setting the floating voltage symmetry has to be performed immediately after adjusting the idling

current.

Operate the power amplifier in idling condition. Measuring between the measuring points CNS1X.1 / CNS2X.5

and CNS1X.5 / CNS2X.5 with a DC-voltmeter, set the floating voltage symmetrical to GROUND via VR1 on the

printed board assembly 84194/1 (84199/1).

The absolute voltage value is not critical but the symmetry of the ±floating voltage over GROUND.

Checking the set floating voltage is possibly by use of a DC-voltmeter and measuring between on the service

connector between CNS2X.3 and CNS2X.5 on the printed board assembly 84194/2 (84199/2) as well as on the pin

terminal between CN10.1 and CN10.2/3 on the printed board assembly 84194/1 (84199/1).

The measured DC voltage value should be 0 volts.

4.3. VCA - OFFSET

Rhythmically open and short-circuit the pin contacts CNS2X.1 and CNS2X.2 on the printed board assembly

84194/2 (84199/2). Use VR100 to adjust the power amplifier output to their minimum offset value (with

oscilloscope to minimal peak value or to the audible minimum volume of the interfering pulse).

5. Function Test

5.1. OUTPUT – Offset Voltage

DC-measurement at the loudspeaker outputs with U(DC) ≤±10mV.

5.2. LIMITER

5.2.1. Attenuation Test

Power amplifier driven with a 1 kHz signal up to U(A) = 69 V (without load). Increase the input voltage by

10dB. The LIMITER LED lights and the output voltage ascents by approximately 2dB to approximately 85 V

while slightly clipping. The distortion rate of the limited signal is at THD = 1.0 ... 1.5%. Further increasing the

input signal up to a value of +21dBu should not result in remarkably higher clipping.

5.2.2. Attack and Release Times

Test has to be performed without load resistors connected.

1.) Drive the power amplifier with a burst signal (f = 1kHz, 10 cycles, rate: ≈0.5 sec.) and U(E) = +16dBu at the

input.

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2.) Monitor the output signal via oscilloscope. After 3 to 4 signal periods, the limiter has controlled the high

distortion level down to a minor residual distortion (THD = 1% .... 1.5%).

Attack time: 3-4 ms Release time: 30-40 ms

5.3 POWER-ON DELAY

Make sure that the signal is present at the power amplifier input. Switch the power amplifier via the Power-ON

switch on. Approximately 2 seconds after switching the power on, the signal will be present at the output.

5.4 FAN CONTROL

Upon switching the power amplifier’s power on, the fans will run for approximately 2 seconds and stop when the

power amplifier has regained "normal" temperature. In idling condition (Power-ON, no signal present) the fans

are switched between SLOW and OFF mode, depending on the heat sink's temperature.

Removing the connector CN5 lets the fans run in FAST mode.

The fan voltage is measured between pin CNS2X.4 and pin CNS1X.4: SLOW ca. 17.5 V FAST

ca. 29.0 V

5.5. SOAR-PROTECTION TEST

Drive the power amplifier up to 69 V in 4Ω. Parallel-connect a 1 resistor. The protection circuit reacts and

continuously tries to re-start! The protect-LED lights. Repeat the test with a 2 resistor. The power amplifier should

not switch off.

Caution: If the SOAR-protection does not react in case of mains undervoltage, repeat the test with parallel-

connecting a 0.5Ωresistor instead of a 1Ω.

5.6. SHORT-CIRCUIT CURRENT-LIMITING TEST

-drive each channel with a burst signal (f = 1kHz, 1-3 cycles, rate ≈1 sec.), with U(E) = 0dB

-connect a 1Ωload resistor

-the short-circuit current-limiter limits the output voltage at the load resistor symmetrically

(monitor via oscilloscope) to a peak voltage value of 40 V

(approximately 40 A maximum Peak Output Current).

5.7. DC-VOLTAGE PROTECTION TEST

-feed a test signal ( f = 5 - 7 Hz ) to the power amplifier without load resistor connected.

-starting at an input voltage of approximately 5 Veff, the protection circuit reacts and continuously tries to re-

start!

The protect-LED blinks in the same frequency.

-repeat the test with f = 14Hz. The power amplifier should not switch off.

5.8. HF-PROTECTION TEST

Caution: Perform tests without load resistor connected to the power amplifier only.

Feed a +20dBu sine burst signal f = 100kHz (40ms ON, 960ms OFF) to the power amplifier input.

The protection circuit has to react. The power amplifier continuously tries to re-start.

The PROTECT-LED blinks in the same frequency.

Repeat the test with f = 50kHz. The power amplifier should not switch off.

5.9. INDICATOR TEST

Feed a 1kHz sine signal while slowly increasing it.

At approximately -26dBu the SIGNAL-LED starts lighting and at approximately +8dBu the LIMIT-LED lights.

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6. Level

6.1. VOLTAGE AMPLIFICATION

Unit Input U(E) Measuring

point U(A) U(A) Gain Load

Resistor Test

frequency

X1201/

P1201 CH. A or B +5.8dBu OUTPUT +39dBu 69.2V 33.2 1kHz

X1201/

P1201 CH. A + B -0.2dBu OUTPUT +39dBu 69.2V 39.2 1kHz

6.2. MAXIMUM INPUT LEVEL: U(E) = +21dBu

7. GROUND LIFT-switch

The circuit ground (at the input or output connector) is measured against the enclosure ground

(contact on the ground-screw on the rear of the appliance or ground contact on the mains plug).

Switch set to GROUNDED : R = 0Ω

UNGROUNDED : R = 5Ω

8. Amplitude – Non-Linearity

-measured with a 8Ωload resistor connected

-MBW = 80kHz

Test At nominal output power Remarks

THD+N ( f = 1kHz ) <0.05%

IMD-SMPTE <0.08% 60Hz, 7kHz

DIM 30 <0.03% 3.15kHz, 15kHz

9. Frequency Response

Linear Frequency Response (mind border frequencies)

Lower border frequency Upper border frequency

-3dB fu < 10Hz fo = 85kHz

-1dB fu = 13Hz fo = 45kHz

10. Noise Interference

- U(F) = extraneous voltage non-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)

- S/N ratio ref. to max. output voltage into 4 ohms = 55.1 V (+37 dBu) and interference voltage A-weighted

Power

Amp Output U(F)

dBu U(G)

dBu U(A)

dBu GAIN

dB IN(A)

dBu S/N-R.

dB Remarks

Input Channel A & B operated. (as shipped)

X1201 /

P1201 SPEAKER OUT - 63 - 51 - 65 33 - 98 >104 INPUT A&B R(Q) = 50Ω

Only channel A operated. Remove the resistors R291 / R292 off the printed board assembly 84194/2.

X1201 /

P1201 SPEAKER OUT - 65 - 54 - 67 33 - 100 >106 INPUT A R(Q) = 50Ω

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11. Heat Sink Temperature

DC-voltages measured between CNS1X.8 and CNS2X.5 (GNDA)

Heat sink temperature 25°C 40°C 60°C 80°C 100°C 120°C 130°C

1.5 V 3.0 V 6.0 V 9.0 V 12.0 V 13.0 V 13.8 V

The switch-off point is at approx. 130 °C. The power amplifier enters Protect-Mode.

12. SLOT-Specification

The power amplifier X1201 (P1201) is capable of providing a maximum current of ±300mA for individual

modules with ±15V operating voltage.

- measured at 10 % mains undervoltage.

Power consumption:

Xi-11 / Xi-21 – Input modules Approx. 18 mA

V – Front modules Approx. 70 mA

I-1 Input module Approx. 18 mA

MRx-Front modules Approx. 70 mA

13. Dimensions and Weight

Power amplifier Weight Dimensions in mm

X1201 / P1201 17kg 483 x 132.5 x 385.5

14. Input Connector Pin-Assignment - CN7 and Module Slot Connectors - CNSLA

CN7 CNSLA CNSLA

PIN Assignment PIN Assignment PIN Assignment

1-15V 1a/1b n.c. 9a KA1 (Module ID)

2GNDA 2a/2b n.c. 9b KA2 (Module ID)

3Sensout A 3a/3b n.c. 10a/10b +15V

4Return A 4a/4b n.c. 11a/11b AMPA2 (alt. Output 1in2)

5Sensin A 5a KA4 (Module ID) 12a/12b LIMINA (Limiter Input)

6Signal A 5b KA5 (Module ID) 13a/13b BUSREFA

7GNDA 6a/6b -15V 14a/14b SIGNALA1 (Signal Out)

8GNDA 7a GNDA 15a/15b SWA1 (Select)

9Signal B 7b KA3 (Module ID) 16a/16b SIGNAL M (Signal In)

10 Sensin B 8a/8b GNDA

11 Return B

12 Sensout B

13 GNDA

14 +15V

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15. Remote Control Connector Pin-Assignment CNRC / CNRC5V

CNRC CNRC CNRC5V

PIN Assignment PIN Assignment PIN Assignment

1AMPA2 18 n.c. 1GND-D

2+5V 19 HTSNKTMP 2GND-D

3COLDCUR+ 20 n.c. 3POWER-ON

4+5V 21 HOTCUR- (68Ω/⊥)4GND-D

5COLDCUR- 22 n.c. 5GND-D

6KA1 23 HOTCUR+ (68Ω/⊥)6+5V

7LIM-OUTA 24 n.c. 7+5V

8KA2 25 AMPB2 (68Ω/⊥)8LED-STANDBY

9n.c. 26 GND-D

10 KA3 27 GND-D

11 POWER-ON 28 GND-D

12 KA4 29 GND-D

13 STBYLED 30 AID5 (10Ω/⊥)

14 KA5 31 AID4

15 TIMER 32 AID3

16 n.c. 33 AID2

17 RELAYDRV 34 AID1

16. Amplifier-ID

AID1: 1MSB

AID2: 1↓

AID3: 1↓

AID4: 1↓

AID5: 0LSB

Bin: 11110 Hex: 1E

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