User's Manual

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DriveCore Install Network Series Power Ampliﬁers

Operation Manual

page 10

Startup Procedure

When ﬁrst turning on your ampliﬁer:

1. Turn down the level of your audio source.

2. Turn down the input attenuators of the ampliﬁer.

3. Turn on the “Power” switch. The Power indicator should light.

4. Turn up the level of your audio source to an optimum level. Ensure that at no point in the signal chain is the signal being clipped in any way.

5. Turn up the level controls on the ampliﬁer to the desired loudness or power level.

IMPORTANT: Before making any wiring or installation changes, turn off the ampliﬁer and disconnect the power cord.

For help with determining your system’s optimum gain structure (signal levels) please refer to the Crown Ampliﬁer Application Guide, available online at www.crownaudio.com.

Hardware Setup and Conguration

Your ampliﬁer is protected from internal and external faults, but you should still take the following precautions for optimum performance and safety:

1. Conﬁgure the ampliﬁer for proper operation, including input and output wiring hookup. Improper wiring can result in serious operating difﬁculties. For information on

wiring and conﬁguration, please consult Page 8 of this manual. For advanced setup techniques, consult Crown’s Ampliﬁer Application Guide available online at

www.crownaudio.com.

2. Use care when making connections, selecting signal sources and controlling the output level. The load you save may be your own!

3. Do not short the ground lead of an output cable to the input signal ground. This may form a ground loop and cause oscillations.

4. Never connect the output to a power supply, battery or power main. Electrical shock may result.

5. Tampering with the circuitry or making unauthorized circuit changes may be hazardous and invalidate all agency listings.

6. Do not operate the ampliﬁer with the RED Clip LEDs constantly ﬂashing.

7. Do not overdrive the mixer, which will cause clipped signal to be sent to the ampliﬁer. Such signals will be reproduced with extreme accuracy, and loudspeaker damage

may result.

8. Do not operate the ampliﬁer with less than the rated load impedance. Due to the ampliﬁer’s output protection, such a conﬁguration may result in premature clipping and

speaker damage.

Remember: Crown is not liable for damage that results from overdriving other system components.

Precautions

Connect to AC Mains

Connect your ampliﬁer to the AC mains power source (power outlet) using the supplied AC power cord set. First, connect the IEC end of the cord set to the IEC connector on

the ampliﬁer; then, plug the other end of the cord set to the AC mains.

WARNING: The third prong of this connector (ground) is an important safety feature. Do not attempt to disable this ground connection by

using an adapter or other methods.

Make certain the AC mains voltage and current ratings are sufﬁcient to deliver full power to all ampliﬁers. If the AC line voltage varies out of an acceptable range, the

ampliﬁer’s power supply turns off and the blue Power LED ﬂashes. The ampliﬁer will turn back on when the AC line voltage returns to safe operating levels.

DriveCore Install Ampliﬁers utilize a universal power supply. The AC voltage requirements are 100VAC - 240VAC, 50/60Hz (+/-10%). If the voltage exceeds these

requirements, then the Power LED will ﬂash and the ampliﬁer will stop passing audio until the voltage is within the requirements.