Lab.gruppen ip 1350 사용자 가이드

Power

1/3 Power

1/8 Power

Idle

[W]

note 1

note 2

iP 1350

8 ohms

2x

300

495

325

72

4 ohms

2x

500

840

540

72

2 ohms

2x

700

1330

840

72

note 1

Average power with music as program source. The amplifier driven to clip level.

note 2

Normal music power with 9dB headroom, IEC standard power rating.

MAX OUTPUT POWER

MAINS INPUT POWER

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The heat power can be calculated as in the following example: 
We consider a headroom of at least 5dB (1/3 of full power) and a 4 ohms load on an amplifier 
producing 500 watts per channel. The 1/3 power per channel is accordingly 500 / 3 = 167 watts, and 
total output 2 x 167 = 334 watts. 
The power consumption according to the chart above is then 840 watts. This chart shows the active 
power consumption of the amplifier with different loads and power levels.  
 
The heat power produced is the difference between the power consumption and output power: 
840 - 334 = 506 watts per amplifier. 
The chart below shows the heat power produced in watts, in kcal per hour, and also in BTU per hour. 

1/3 Power(1)1/8 Power (2) 1/3 Power(1) 1/8 Power (2)1/3 Power(1)1/8 Power (2)

[W]

[W]

kcal / h

kcal / h

BTU / h

BTU / h

iP 1350

8 ohms

295

250

250

220

1010

850

4 ohms

507

415

440

360

1730

1420

2 ohms

863

665

740

570

2950

2270

note 1

Average power with music as program source. The amplifier driven to clip level.

note 2

Normal music power with 9dB headroom, IEC standard power rating.

HEAT POWER

 
The efficiency can also be calculated, it being the output-power divided by the input-power:  
334 watts / 840 watts= 40%. 

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XLR Input connectors are active balanced and wired according to the IEC 268, that is pin 2 hot, and wired 
in the following way: 
 
PIN 1   

GROUND/SHIELD 

PIN 2   

HOT (+) 

PIN 3   

COLD (-)