MAINS OPERATION & RESULTING TEMPERATURE

MAINS OPERATION

The following tables allow determining power supply and cabling requirements. The values of the column „1/8 max. Output @ 4” are relevant for “normal” operation. These values are based on operating the power amplifier with VDE-noise at 1/8 of the maximum output power, which approximately equates the load of the power amplifier being operated with a music signal at maximum volume possible, without noticeable clipping

RESULTING TEMPERATURE INSIDE THE POWER AMPLIFIER

The power drawn from the mains network is converted into acoustic output power to feed the connected loudspeaker systems & heat. The difference between drawn power and dispensed power is called leakage power or dissipation (Pd). The amount of heat resulting from power dissipation might remain inside of a rack-shelf and needs to be diverted using appropriate measures. The following table provides auxiliary means for calculating the temperatures inside of a rack-shelf system/cabinet and the ventilation efforts necessary.

The column “Pd” lists the leakage power in relation to different operational states. The column “BTU/hr” lists the dispensed heat amount per hour

P1200RL

U Mains [V]

I Mains [A]

P Mains [W]

Pout [W]

Pd [W]

BTU/hr(3)

Idling

230V

0.55

85

 

85

290

Max. Output @ 8(1)

230V

6.40

1185

2 x 380

425

1450

Max. Output @ 4(1)

230V

10.5

2030

2 x 600

830

2832

1⁄3 max. Output @ 4(1)

230V

6.60

1230

2 x 200

830

2832

1⁄8 max. Output @ 4(2)

230V

3.80

675

2 x 75

525

1791

Normal Operation (-10dB) @ 4(1)

230V

3.78

670

2 x 50

570

1945

Nominal operation (0dB) @ 4(1)

230V

9.69

1870

2 x 500

870

2969

Alarm Operation (-3dB) @ 4(1)

230V

7.27

1370

2 x 250

870

2969

P900RL

U Mains [V]

I Mains [A]

P Mains [W]

Pout [W]

Pd [W]

BTU/hr(3)

Idling

230V

0.45

70

 

70

239

Max. Output @ 8(1)

230V

4.97

920

2 x 280

360

1228

Max. Output @ 4(1)

230V

8.16

1580

2 x 450

680

2320

1⁄3 max. Output @ 4(1)

230V

5.13

960

2 x 150

660

2252

1⁄8 max. Output @ 4(2)

230V

2.90

520

2 x 56.3

407.5

1390

Normal Operation (-10dB) @ 4(1)

230V

2.84

505

2 x 35

435

1484

Nenn Operation (0dB) @ 4(1)

230V

7.32

1410

2 x 350

710

2423

Alarm Operation (-3dB) @ 4(1)

230V

5.48

1030

2 x 175

680

2320

For approximation; when operating the appliance at 120V mains the stated current values need to be doubled.

(1)modulated with sine signal

(2)modulated with VDE-noise

(3)1BTU = 1055.06J = 1055.06Ws

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Electro-Voice P900RL, P1200RL Mains Operation & Resulting Temperature, Resulting Temperature Inside the Power Amplifier

P1200RL, P900RL specifications

Electro-Voice P900RL and P1200RL are high-performance power amplifiers designed for various audio applications, including live sound reinforcement, installations, and studio settings. These amplifiers stand out in the market due to their innovative technologies and robust features, making them suitable for both professional audio engineers and audio enthusiasts.

The P900RL model delivers a powerful 900 watts per channel at 4 ohms, while the P1200RL offers an even more impressive output of 1200 watts per channel at the same impedance. This significant power enables these amplifiers to drive a wide range of loudspeakers proficiently, ensuring clean and dynamic sound reproduction with minimal distortion.

One of the key features of the P900RL and P1200RL is their efficient Class H topology. This technology improves energy efficiency by maintaining high power output with less heat. Class H amplifiers dynamically adjust their power supply voltage according to the input signal, resulting in reduced power consumption and increased longevity of the components. This makes the P series amplifiers not only powerful but also environmentally friendly.

Both models come equipped with a built-in limiter and comprehensive protection circuitry to prevent damage from overheating, short circuits, and overloading, ensuring safety and reliability in demanding environments. Additionally, the amplifiers feature a tri-mode operation, enabling them to be configured for stereo, parallel, or bridged mono setups, providing versatility for various audio applications.

The P900RL and P1200RL also include advanced signal processing capabilities, including a variable low pass filter for enhanced sound control and clarity. The integrated cooling system maintains optimal operating temperatures, allowing for extended use without the risk of thermal issues.

Audio connectivity is straightforward with both XLR and ΒΌ-inch TRS inputs, allowing the amplifiers to interface with a variety of audio sources. The professional-grade output connectors ensure secure and reliable connections to speakers, critical for live sound applications.

In conclusion, the Electro-Voice P900RL and P1200RL amplifiers offer a compelling combination of power, efficiency, and versatility. With their advanced technologies and protective features, they cater to the demanding needs of sound professionals while delivering high-quality audio performance suitable for any occasion.