Operating Tips

Using the PX850/PX1450

Once the amplifier has been installed and wired into the system, you are ready to use it. Here are some
tips to help you get the most from it.
• Verify that the switches (Output Configuration/Input sensitivity) have been set to the mode that you want.
• Verify that the Signal Smart Standby circuit threshold is set at the level you want.
•When you power the system up for the first time (out of the carton), it’s a good idea to start with all of the
amplifier level controls turned down, then advance them slowly, one at a time, so that you can confirm that each
amplifier channel is operating normally.
•Be sure that the Input Level controls are set sufficiently high to allow the preceding device to drive the amplifier
to full output. For most installations, this is wide open (fully clockwise).
•Once you have established settings, it is a good idea to mark them down, either on paper, or on pieces of tape or
sticky-dots attached to the amplifier’s panel.
•In bi-amplified (multi-amp) systems, it is a good idea to start with the low-frequency amplifiers turned off or
down, and to check each frequency range from highest to lowest to ensure that each loudspeaker component is
operating correctly.
CareandServiceAssistance
C a re: Wipe off the PX850/PX1450’s front panel and chassis from time to time with a soft, dry cloth. If you have
something stubborn to remove, use a mild dish soap or detergent sparingly applied to a soft cloth. Don’t use alcohol,
ammonia, or other strong solvents.
Service Assistance: We suggest that you read the Limited Warranty completely to fully understand your
warranty/service coverage. Please promptly complete and return the Warranty Registration Card. Also be sure to
save the sales receipt in a safe place. It will be necessary for warranty service. If your CARVER Professional
product should require service, you may contact the CARVER Professional Technical Service Department by
calling (503) 978-3363 or by writing to us at the Factory address shown below. We will then direct you to the
nearest in our national network of Authorized Warranty Service Centers or give you detailed instructions on how
to return the product to us for prompt action. If you should have questions or comments, please write to the Factory
address given below. Please include the model and serial number of your Carver Professional product, your
complete address and a daytime phone number.
13 14
Field ConfigurableGain Controls
Note: The Carver P rofessional limited warranty does not extend to damage resulting from the
following pro c e d u re if attempted by any person not specifically authorized by CarverP ro f e s s i o n a l

CAUTION

To move the gain controls from the front panel to the back panel (or vice versa):
1.Unplug amplifier from power source.
2.Remove top cover (9 screws). Do not allow debris, tools, or hardware to fall inside chassis.
3.Gently pull to remove control knobs from gain controls and remove hole plugs from opposite panel.
4. Remove the 4 screws from gain control circuit board.
5.Carefully move board to opposite panel stand-offs, being sure to keep connector cable free and untwisted.
NOTE: Gently bundle excess cable length and secure with tie wrap.
6.Screw board to threaded stand-offs. Do Not Over Tighten!
7.Put hole plugs in opposite panel.
8.Observing the position of the knob pointers, gently push the control knobs onto the gain controls, or leave
off for screwdriver adjustment.
9.Replace top cover.