QSC CX4T User Manual download pdf (Page 15)

HEAT EMISSIONS

Essentially, a power amplifier draws electrical energy from the AC mains, converts it to DC, and then converts

it again into an analog of the input signal to send out to the loudspeakers. Any AC power that enters the amplifier

through the power cord and does not exit through the speaker outputs turns into heat, which the amplifier must

rid itself of by exhausting it to the outside. In indoor use this may present a sizeable challenge to a building’s

air conditioning system. Use the table below to predict the heat that will be emitted by your amplifier.

Full Power 1/3 Power 1/8 Power Idle

Model Channel Load BTU/hr kcal/hr BTU/hr kcal/hr BTU/hr kcal/hr BTU/hr kcal/hr

CX4, CX4T 8

ΩΩ

Ω + 8

ΩΩ

Ω 645 163 615 155 510 128 85 22

ΩΩ

Ω + 4

ΩΩ

Ω 1265 318 1060 267 830 210 85 22

ΩΩ

Ω + 2

ΩΩ

Ω 2340 590 1700 429 1295 326 85 22

70V + 70V 1365 344 1050 264 800 202 85 22

CX6, CX6T 8

ΩΩ

Ω + 8

ΩΩ

Ω 1406 354 1020 257 604 152 229 58

ΩΩ

Ω + 4

ΩΩ

Ω 2525 637 1617 408 921 232 229 58

ΩΩ

Ω + 2

ΩΩ

Ω 4658 1174 2532 638 1290 325 229 58

70V + 70V 2010 507 1503 379 1141 288 229 58

CX12, CX12T 8

ΩΩ

Ω + 8

ΩΩ

Ω 1791 452 1239 312 805 203 297 75

ΩΩ

Ω + 4

ΩΩ

Ω 3330 840 2081 525 1222 308 297 75

ΩΩ

Ω + 2

ΩΩ

Ω 5698 1437 3146 793 1611 406 297 75

70V + 70V 3772 951 2338 589 1280 323 297 75

Heat emissions of CX

amplifiers under various

conditions

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 31 32

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QSC CX4T User Manual Page 15

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