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SERVICE AND CARE ________________________________________________
The chassis may be cleaned with a soft towel and Windex® (or a similar window cleaner). Spray it on the
cleaning cloth to moisten it, not on the component. Do not use solvents or harsh chemicals as they may
remove the labels from the chassis. The frequency and need of cleaning will be governed by operating
environmental conditions. Avoid letting the component become dusty or wet. A ‘feather duster’ type
cleaner will also work well for cleaning the component.
Replacing Vacuum Tubes
If it becomes necessary to replace the tubes, the same brand as installed new should be used. A complete
new tube kit is available from Cary Audio Design. Although useful tube life varies depending on the nature
and degree of use, under normal home use, the 845 output tube and the 300B driver tube should last
many years in the CAD 211 FE. The 6SL7 input tubes should last even longer.
NOTE: Any current production or New Old Stock (NOS) types of 845, 6SL7 or 300B tubes will work fine in
the CAD 211 Founder’s Edition amplifier. The voltages are fine for all available types.
WARNING
Make sure the amplifier is unplugged 30 minutes from the AC mains before replacing the
tubes to avoid risk of shock and high heat from the 845 tube.
Factory Service
Careful consideration has been given to the design of this product to keep maintenance problems to a
minimum. If problems arise, refer to the trouble-shooting guide at the end of this manual. If the problem
is not easily solved, we suggest that you contact our Customer Service Department by phone at (919) 355-
0010, 1–5 pm Eastern Standard Time, to describe your problem in detail. Do not return the component to
the factory without a Return Authorization Number (RA) from the Customer Service Department.
Cary Audio Design assumes no responsibility if the transportation company refuses to pay a damage claim
due to your improper packing or lack of insurance should the unit be lost in shipment. We strongly
suggest using the original packing cartons for shipping any Cary Audio Design component.
Non-Warranty Repairs
Cary Audio Design will provide repair service for its products charging on a time and expense basis. At this
time, the standard non warranty service bench fee is $125 with all parts used for repair charged extra. This
may change with time and is not a quote for service. Please call us at 919-355-0010 for more information
about out of warranty service and repair fees.
WARNING
Make no attempt to put the CAD 211 FE in service outside of the cabinet or with the cabinet
open! Contact with the high voltages found inside the unit can be fatal! Remove the AC power
plug from the wall and allow 30 minutes for the high voltage capacitors to discharge through
bleeder resistors before attempting to change the tubes or to clean the inside the amplifier.
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