Thank you for purchasing from Grommes~Precision!
Grommes~Precision and its commercial audio division, Precision Electronics, has been
designing, engineering, and manufacturing quality sound equipment in the United States
since it started operation in March of 1946. Over a half a century of quality, service, and
flexibility as “Your Personal Manufacturer” have made us one of the last American audio
manufacturers. If you have any questions with this or any one of our other fine products, give
us a call. When you talk with a member of the Grommes~Precision team you’ll be speaking
with someone who had a hand in concept, design, production, or testing of this very product.
INSPECTION
This unit was carefully checked and packed before leaving the factory. However, it is always a good idea to
inspect the shipping container and unit for indication of improper handling. If the unit has been damaged,
make an immediate claim to the dealer or distributor from whom it was purchased. If the unit was shipped to
you, notify the transportation company without delay, saving all packing materials, in order to process the
claim.
INITIAL PERFORMANCE CHECK
Continue the inspection by running a performance check. Connect a test speaker to the 4-8 ohm direct output
terminals (see page 6) and a tuner, tape deck, or CD player to the auxiliary input and set the controls for
operation. CAUTION: TO PROTECT THE SPEAKER FROM DAMAGE, DO NOT TURN THE UNIT ON UNTIL
ALL CONNECTIONS HAVE BEEN MADE. INADDITION, MAKE SURE THE UNIT IS GROUNDED BEFORE
TESTING.If the unit should be inoperable and no damage is noted, please notify the factory at 1-847-599-1799
and ask for Technical Support.
RACK MOUNTING
For best results use a 10-32 class UNF-2B or 12-24 class UNC-2B rack and 0.625 inch machine screws
(metric: M5X8-6H or M6X1-6H, 15.88mm). It is recommended that the drive of these screws be phillips in order
to protect the finish from unnecessary scratches. Also recommended are nylon or plastic washers which will
not only help protect the finish but also aid in retaining the screws.
CONVECTION, FAN COOLING, AND VENTILATION
This unit is cooled via convection and therefore designed for continuous operation. Do not block the unit’s
heatsink fins or vent holes located in the cover. If the unit will be rack mounted, you must utilize a cooling fan
that is capable of exhausting not less than 300CFM. The fan must be mounted to the inside top of the rack,
above the amplifier.
Rev. A 1
GROMMES-PRECISION 847-599-1799 F: 847-599-6178 800-SINCE-46
