Adcom GFP-815 User Manual

the

art components that are easy to use at an affordable price. In doing this, Adcom has created a

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ponents and offering them at affordable prices, Adcom has enabled more people to enjoy their

said it best: “No

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AWARD WINNING

Innovation is our stronghold, and our numerous awards year after year prove that we’re never

art digital processors, Adcom components consistently impress even the most demanding

ences. Adcom components have won over 25 Product of the Year and Special Recognition

Consumer Electronics Show

ENGINEERING PASSION

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ture, but to also deliver the greatest possible value. It is our engineers’ passion for perfection

that has enabled our components to be judged the equivalent of others costing two, three, or

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duced or

PERFORMANCE AND VALUE

ABOUT ADCOM

In the world of high performance electronics, Adcom has done the impossible: make state of

revolution in the world of consumer electronics. By creating some of the most renowned com

favorite music and movies at top performance levels. Perhaps Audio Magazine
competing company I know can provide a similar balance of sound quality, power and afford
ability.”

satisfied to rest on our reputation. From our legendary high current amplifiers to our state-of­the
audi
citations from Audio Video International, 3 Diapason D’Or Awards, 7
Design and Engineering Awards, and have appeared on Stereophile’s “Recommended Compo­nents” lists over 70 times since 1988. A reputation worth its weight in gold.

Every Adcom component is not only designed to reproduce the highest quality sound and pi

even five times as much. Our engineering team consistently strives to develop and design pro
ucts that will exceed your expectations. Our goal at Adcom is to let more consumers hear high
end quality sound and see high-end video without paying high-end prices.

All Adcom components are the result of a long-standing dedication to innovation, quality, si
plicity and value. Adcom, we have the power, and now so do you.

This document is subject to change. Please check our website for
the most up-to-date version.

REV 2.1, 4/2011

ADCOM is a registered trademark of ADCOM LLC

Copyright © 2011 ADCOM LLC. All rights reserved. No part of this manual may be repro
electronically transmitted without the express written consent of ADCOM LLC.

THE FOLLOWING

PRECAUTIONS AND SAFETY INSTRUCTIONS

Warning: To reduce the risk of fire or electric shock, do

injury to a child or adult, and serious damage to the unit.

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ommended by the manufacturer or sold with the unit. Any

mounting of the device should follow the manufacturer’s

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Read all

the safety and operating instructions before connecting or using

Retain this notice and the owner’s manual for future reference.

All warnings on the unit and in its operating instructions should be

All operating and use instructi

ons should be followed.

Do not use this unit near water. For example, near a bathtub, washbowl,

The unit should be installed so that its location or position does not inte

r-

The unit should be situated away from heat sources such as radiators, heat

The unit should be connected to a power supply outlet only of the voltage

The power supply cord should be routed so that it is not likely to be

Clean unit only as recommended in its i

nstruction manual.

The power supply cord of the unit should be unplugged from the wall ou

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Care should be taken so that objects do not fall, and liquids are not

This unit should be serviced by qualified service personnel when:

A. The power cord or the plug has been damaged; or

B. Objects have fallen, or liquid has been spilled, into the unit; or

C. The unit has been exposed to rain, or liquids of an

y kind; or

D. The unit does not appear to operate normally, or exhibits a

E. The device has been dropped, or the enclosure damaged.

D

O NOT ATTEMPT SERVICING OF THIS UNIT YOURSELF.

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ATTENTION

POUR PREVENIR LES CHOCS ELECTRIQUES NE PAS UTILISER CETTE FICHE

AUTRE SORTIE CE COURANT, SAUF SI LES LAMES PEUVENT ETRE INSEREES

CAUTION

CAUTION POWER LINES

Any outdoor antenna must be located away from

all power lines.

OUTDOOR ANTENNA GROUNDING

If an outside antenna is connected

Use No.10 AWG (5.3 mm

2

) copper, No.8 AWG (8.4 mm

2

) alum

i

num, No.17

Mount antenna discharge unit as close as possible to where lead

EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL CODE

NOTE TO CATV SYSTEM INSTALLER

This reminder is provided to call the

lar,

ARE REQUIREMENTS OF UL AND CSA SAFETY REGULATIONS

not expose this unit to rain or moisture.

Use only with a cart, stand, tripod, bracket, or table re

instructions, and should use a mounting accessory reco
mended by the manufacturer.

this unit.

adhered to.

POLARISEE AVEC UN PROLONGATEUR, UNE PRISE CE COURANT OU UNE

A FOND SANS EN LAISSER AUCUNE PARTIE A DECOUVERT.

TO PREVENT ELECTRIC SHOCK DO NOT USE THIS POLARIZED
PLUG WITH AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET
UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE
EXPOSURE.

to your tuner or tuner / preamplifier, be sure the antenna system is
grounded so as to provide some protection against voltage surges and
built-up static charges. Section 810 of the National Electrical Code,
ANSI/NFPA No. 701984, provides information with respect to proper
grounding of the mast and supporting structure, grounding of the lead-in
wire to an antenna discharge unit, size of grounding conductors, location
of antenna discharge unit, connection to grounding electrodes, and re­quirements for the grounding electrode.

AWG (1.0 mm2) copper clad steel or bronze wire, or larger, as a ground
wire.

Secure antenna lead-in and ground wires to house with stand-off insula­tors spaced from 46 feet (1.221.83 m) apart.

-in enters

house.

Use jumper wire not smaller than No.6 AWG (13.3 mm2) copper, or the
equivalent, when a separate antenna grounding electrode is used. See
NEC Section 810-21 (j).

kitchen sink, laundry tub, in a wet basement, or near a swimming pool.

fere with its proper ventilation. For example, it should not be situated on
a bed, sofa, 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 flow of air through its ventilation openings.

registers, stoves, or other devices (including amplifiers) that produce
heat.

and frequency marked on its rear panel.

walked on or pinched, especially near the plug, convenience receptacles,
or where the cord exits from the unit.

let when it is to be unused for a long period of time.

spilled, into the enclosure through any openings.

INSTRUCTIONS CONTAINED IN ARTICLE 810. RADIO AND TELEVISION
EQUIPMENT.

the earth if required by local codes.

marked change in performance; or

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

CATV system installer’s attention to Article 82022 of the National Electri­cal Code that provides guidelines for proper grounding and, in particu
specifies that the cable ground shall be connected to the grounding sys­tem of the building, as close to the point of cable entry as practical.

815 is designed

815 paired with an ADCOM power amp

ly and request the name of the carrier

damages can be initiated. The right to

a claim against a public carrier can be

promptly in writing and if the shipping

available for inspection by the carrier.

erate much heat, it is good practice to

We recommend that you exercise care

815, it is recommended that you allow

jacks. If this should occur, moving the

815 will ultimately depend on the

put and

ot route the power cord where it will

be crushed, pinched, bent, exposed to

particular attention to the power cord

for a long period of time. Immediately

If you observe these recommendations

Dust on the surface of the cabinet can

y cord or plug has been

tation damage should the preamplifier

ever need to be shipped again.

Introduction

Congratulations on your decision to
purchase the GFP-815 stereo preamp­lifier. Two channel audio is better
than ever! The new DVD Audio and
SACD formats can support a wider fre­quency spectrum (100kHz) and great­er dynamic range (144dB) than con­ventional CD. The GPF­to capture all the fidelity that high
resolution audio has to offer, with
precision broadband components and
an ultra low noise floor. Equipped
with a phono stage, this new ADCOM
preamp hasn’t forgotten about your
legacy components. Audition the GFP-

and CD / DVD player and rediscover
the magic of two channel. To realize
the full potential of your new stereo
preamplifier, and before making any
connections to it, please read these
operating and installation instructions
thoroughly.

Key Features

• Class A line level preamp

• High resolution audio bandwidth

• 7 source audio inputs

• 2 mp3 input front and rear panel

• Phono input stage (MM & MC)

• Main & Record outputs

• External remote in and loop

• Bass, treble, and balance adjust

• Front panel headphone input

• Remote control and rs-232 control

Unpacking the GFP-815

Before your new ADCOM preamplifier
left our factory, it was carefully in-

spected for physical imperfections
and tested for all electrical parame­ters as a routine part of ADCOM’s sys­tematic quality control. This, along
with full operational and mechanical
testing, should ensure a product flaw­less in both appearance and perfor­mance. After you have unpacked the
GTP-815, inspect it for physical dam­age. Save the shipping carton and all
packing material as they are intended
to reduce the possibility of transpor-

In the unlikely event damage has oc­curred, notify your dealer immediate-

so a written claim to cover shipping

forfeited if the carrier is not notified

carton and packing materials are not

Save all packing materials until the
claim has been settled.

Placing the GFP-815

Although the GFP-815 does not gen-

ensure the amplifier’s long-term,
trouble-free operation to provide ad­equate ventilation for the unit. There­fore, the GFP-815 should be kept
away from external sources of heat
such as radiators and hot-air ducts.

when placing components on top of
the GFP-815. If you are placing a heat
producing component (such as an am­plifier) on top of or below the GFP-

at least 3 inches vertical spacing for
proper airflow.

If your system includes the use of the
phono input, you may find that pla­cing components above or under the
GFP-815 may induce hum, caused by
the proximity of their power trans­former to the phono cables or input

components will usually help reduce
the hum.

the GFP-815 will perform reliably in
any reasonable environment.

You should also pay attention to such
normal considerations as protection
from excessive dust and moisture.

be easily and safely removed with a
duster such as made by Swiffer™. Fin­ger prints can be removed with a soft
cloth dampened with a mild non­ammonia cleaner.

The optimal performance of your new
GFP­care with which you make the connec­tions between the amplifier, pream­plifier and loudspeakers. All in
output signal connections should be
made only with high quality, low-loss,
low capacitance cables. For recom­mendations of the type and quality of
interconnections that are best for
your applications, consult with your
ADCOM retailer.

Safety Information

There are no user serviceable parts
inside. Refer all servicing to qualified
service personnel.
The unit must be connected to a pow­er supply only of the type and voltage
specified on the rear panel. Connect
the component to the power outlet
only with the supplied power supply
cable or an exact equivalent. Do not
modify the supplied cable. Do not de­feat grounding and/or polarization
provisions. The cable should be con­nected to a 3-pin polarized wall out­let, matching the wide blade of the
plug to the wide slot of the recepta­cle. Do not use extension cords. Do
n

heat, or damaged in any way. Pay

at the plug and where it exits the
back of the unit. The power cord
should be unplugged from the wall
outlet if the unit is to be left unused

stop using the component and have it
inspected and/or serviced by a quali­fied service agency if:

. The power suppl
damaged;
. Objects have fallen on or liquid has
been spilled into the unit;
. The unit has been exposed to rain;
. The unit shows signs of improper
operation; or
. The unit has been dropped or damaged