This is the 16 pages manual for Adcom GPF 555 II Owners Manual.
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THE FOLLOWING PRECAUTIONS AND SAFETY INSTRUCTIONS
ARE REQUIREMENTS OF UL AND CSA SAFETY REGULATIONS
Warning: To reduce the risk of tire or electric shock, do not expose
thle unit to rain or moisture.
RISK OF ELECTRIC SHOCK '
DO NOT OPEN
AVIS: FllSOUE DE CHOC ELECTRIOUE-NE PAS OUVRIFI
The graphic symbol at a lightning llash with an arrow
point within a mangle signilies that there is dangerous
voltage within the unit and it poses a hazard to anyone
removrng the cover to gain access to the interior oi the
untl.0nly quaiineo urvroe personnel lI-tDuld matte
any such attempt.
The graphic symbol oi an exclamation pornt Within an
equilateral triangle warns a user at the device that it is
ncwaanry to reier m the insiruaaan manual and ilo
warnings for proper operation of the unit.
Do not place this unit on an unstable cart, stand. tripod.
bracket, or table The unit may fall. causing serious
injury to a child or adult. and serloue damage to the
unit. Use only with a cart. stand, tripod, bracket. or table
recommended by the manufacturer. or sold with the
unit. Any mounting ot the device should lollow the man-
utacturer's instructions, and should use a mountlng ac-
coesory recommended by the manufacturer.
Read all the safety and operating instructions belore connecting or using
Retain inis notice and me owner 5 manual ior iurure reierence.
All warnings on the unit and in lIS operating instructions should be adhered to
All operating and use instructions should be followed.
Do not use this unit near water; lor example. near a bathtub, washbcwl.
kitchen sink, laundry tub. in a wet basement. or near a swimming pool.
The unit should be installed so that its location or position does not intertere
with its proper ventilation. For example, it should not be situated on a bed,
sota, rug, or similar surface that may block the ventilation openings: or
placed in a built-in installation. such as bookcase or cabinet. that may
impede the llow ot air through its ventilation openings.
The unit should be Situated away from heat sources such as radiators, heat
registers. stoves, or other deVIces (including amplifiers) that produce heat.
The unit should be connected to a power-supply outlet only ol the voltage
and lreouencv marked on its rear canal.
The power-supply cord should be routed so that it is not likely to be walked
on or pinched. especially near the plug, convenience receptacles. or where
the cord exits lrom the unit,
Clean unit only as recommended in its instruction manual,
The power-supply cord ol the unit should be unplugged from the wall outlet
when it is to be unused for a long period ol lime.
Care should be taken so that Objects do not tall. and liquids are not spilled.
into the enclosure through any openings.
This unit should be serviced by qualiļ¬ed servioe personnel when:
The power cord or tho plug has been damaged: or
Objects have tallen. or liquid has been spilled. into the unit: or
The unit has been exposed to rain, or liquids of any kind, or
The unit does not appear to operate normally. or exhibits a
marked change in periormanoe; or
The device has been dropped. or the enclosure damaged
DO NOT ATTEMPT SERVICING OF THIS UNIT VOURSELF.
REFER SERVICING T0 QUALIFIED SERVICE PERSONNEL.
POUR PREVENIR LES CHOCS ELECTRIOUES NE PAS UTILISEFI
CETTE FICHE POLARISEE AVEC UN PROLONGATEUR, UNE PRISE
DE COURANT 0U UNE AUTRE EORTIE DE COURANT, SAUF SI LES
LAMES PEUVENT ETRE lNSEREES A FOND SANS EN LAISSER AU-
CUNE PARTIE A DECOUVERT,
TO PREVENT ELECTRIC SHOCK DO NOT USE THlS POLARIZED PLUG
WITH AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET UN-
LESSOTHE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE
_ EXP SURE,
Any outdoor antenna must be located away trom all power lines.
OUTDOOR ANTENNA GROUNDING
ll an outside antenna is connected to your tuner or tuner~pteamplilien be
sure the antenna system is grounded so as to provide some protection
against voltage surges and built-up static charges. Section 810 ol the
National Electrical Code, ANSI/NFPA No. 70-1964, provides inlormation with
respect to proper grounding ol the mast and supporting stmcture. grounding
ol the lead-in wire to an antenna discharge unit. size of grounding
conductors, location oi antenna dlscharge unlt, connection to gruuiidiiig
electrodes, and requlraments lol the grounding electrode.
a. Use No.10 AWG (5.3 mm-) copper. No.8 AWG (8.4 mm-) aluminum,
No.17 AWG 11.0 mm!) copper-clad steel or bronze wire, or larger, as a
b. Secure antenna lead-in and ground wires to house with stand-oil
insulators spaced truth #6 teet(1.22-1.83 m) apart.
c. Mount antenna discharge unit as close as possible to where lead-in
d. Use jumper wire not smaller than No.6 AWG (13.3 mm-l copperr or the
equivalent. when a separate antenna-grounding electrode is used. See NEC
Section 810-21 (ll.
EXAMPLE OF ANTENNA GROUNDtNG As PER NATIONAL ELECTRlCAL CODE INSTRUCTIONS
coNTAINa) IN ARTICLE mo ~ RADIO AND TELEVISION EQUIWENT,
To EirrEnNu ANrEnm
TERMlNALS or RADIO nEcEivsn
POWER SERVICE GROUNDlNG
(e. g. imsrior nlulll Ital-r pip-i
GROUND WIRE. 1b
BONDING JUMPER. a
OPTlONAL ANTENNA cRouNomo
ELECTRODE DRIVEN a FEET (2 44 in, mm
'ruE EARTH r: REQUIRED Ev LOCAL
coDEs SEE NEc sEcTioN ElDr2l it:
NOTE TO CATV SYSTEM INSTALLER
This reminder is provided to call the CATV system installer-s attention to
more uzu-zz or the national Erectricai code that provides guiueiines ior
proper grounding and, in particular, speciļ¬es that the cable ground shall be
connected to the grounding system of the building, as close to the point at
cable entry as practical,
The GFP-55511's power cord is supplied with a -polarized" AC plug as required by UL/CSA standards and local
electrical codes, To minimize the risk of electrical shock, and to insure minimal hum from the system, do not
defeat the polarity-insuring leature of the plug (one wide blade and one narrow blade). To prevent electrical
shock, do not use this polarized plug with an extension cord or receptacle, or other outlet, unless the blades can
he flllly inserted to pmvent blade exposure-
CONTROLLING THE GFP-5551l
Please refer to the diagram of the from panel or the (EFF-55511 to identify all the controls and their functions,
AC ON/OFF SWITCH 0 G
The -rockef' AC on/oft switch w controls power to the circuits of the GFP-555ll and to the SWlTCHED G outlets on the
rear panel oi the GFP-5551l. Whenever the GFP~55511 is energized. the red LED 9 will glow. Push the top of the rocker
switch to energize the GFPSSSH. Push the bottom of the rocker switch to turn the unit off.
mm- 696551! balancu 01's: tre'bo > low pracusor 5- no
power phonls lmll Ill contour liller mane In -CD '-
GFP-55511 Front Panel Diagram
The headphone jack is a standard, 1/4-inch, S-contact type which will operate with any conventional set of stereo
headphones It ynll have a get at light-weight stereo headphones, which are generally supplied with a mini-phonoplug,
you may use a stereo phoneplug-to-miniplug adaptor,
The PHONES jack is powered by its own high-quality stereo amplifier, the level from which is governed by the setting
of the volume control . The ampliļ¬er driving the PHONES Q jack has been optimized to operate with headphones
having an impedance of 100 ohms up to 2,000 ohms. Although the PHONES @ jack and its internal ampliļ¬er will operate
with other headphone impedances, maximum quality will be obtained if headphones with an impedance of approximately
600 ohms are used.
Since the volume a control, BASS @ , TREBLE 9 CONTOUR @, TONE IN Ā®,elc. sheet the level lrom both
the MAIN OUTPUT G jacks and the PHONES a jack, it is advisable to unplug any set of headphones
connected to the PHONES Q jack whenever they are not in use and you are listening to your speakers.
Conversely, if you are listening to your headphones. it is recommended that you turn off your power amplifier lo
deactivate your loudSpeakers. thereby preventing possible interference between the two listening modes or
inadvertent damage to either.