Electro-Voice P900RL, P1200RL owner manual Mains Operation & Resulting Temperature

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 @ 4Ω” 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 @ 8Ω(1)	230V	6.40	1185	2 x 380	425	1450
Max. Output @ 4Ω(1)	230V	10.5	2030	2 x 600	830	2832
1⁄3 max. Output @ 4Ω(1)	230V	6.60	1230	2 x 200	830	2832
1⁄8 max. Output @ 4Ω(2)	230V	3.80	675	2 x 75	525	1791
Normal Operation (-10dB) @ 4Ω(1)	230V	3.78	670	2 x 50	570	1945
Nominal operation (0dB) @ 4Ω(1)	230V	9.69	1870	2 x 500	870	2969
Alarm Operation (-3dB) @ 4Ω(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 @ 8Ω(1)	230V	4.97	920	2 x 280	360	1228
Max. Output @ 4Ω(1)	230V	8.16	1580	2 x 450	680	2320
1⁄3 max. Output @ 4Ω(1)	230V	5.13	960	2 x 150	660	2252
1⁄8 max. Output @ 4Ω(2)	230V	2.90	520	2 x 56.3	407.5	1390
Normal Operation (-10dB) @ 4Ω(1)	230V	2.84	505	2 x 35	435	1484
Nenn Operation (0dB) @ 4Ω(1)	230V	7.32	1410	2 x 350	710	2423
Alarm Operation (-3dB) @ 4Ω(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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