JBL DA850 DA1650 Owners Manual | rev1.2 Draft20231009
Pg 10 of 16
©2023 Harman International | Features, Specifications, and Appearance subject to change without notice.
CONNECTING THE AC POWER CORD
Connect your amplifier to the AC mains power outlet using the supplied AC power cord. First, connect the
IEC end of the cord to the IEC connector on the amplifier. Then plug the other end of the cord to the AC
mains.
The third (ground) prong of the supplied AC power cord connector is a required 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.
DA Series amplifiers use a universal power supply. The AC voltage requirements are 100V-240V~,
50/60Hz (±10%). If the AC line voltage varies outside of this acceptable range, the amplifier’s power supply
will turn off and the standby LED will flash RED. The amplifier will turn back on when the AC line voltage
returns to safe operating levels.
POWER UP PROCEDURE
When turning on the amplifier for the first time:
1.
Connect the power cord and turn on the amplifier power using the rear AC mains rocker switch.
2.
Press the front standby button to power the unit out of standby.
3.
Turn your audio source up to an optimum level. If any of the amplifier’s Clip indicators light RED,
reduce the source level until the Clip LEDs no longer light.
IMPORTANT: Always turn off the amplifier — by using the rear AC mains rocker switch — and disconnect
the power cord before making any wiring or installation changes.
PRECAUTIONS
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.
2. Use care when making connections, selecting signal sources, and controlling the output level.
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.
Never connect the output to a power supply, battery, or power main Electrical shock may
result.
4. Tampering with the circuitry or making unauthorized circuit changes may be hazardous and invalidate
all agency listings.
5. Do not operate the amplifier with the Clip LEDs constantly flashing.
6. Do not overdrive the preamplifier/source, which will cause clipped signal to be sent to the amplifier.
Such signals will be reproduced with extreme accuracy, and loudspeaker damage may result.
7. 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:
JBL/ HARMAN is not liable for damage that results from overdriving other system
components.
