Adcom GFP-345 Manual page 3

• Low-output-impedance (100 ohms) from both sets of outputs to reduce interaction of connecting cables and other
equipment and preserve music dynamic contrasts.
• Five sets of inputs, front panel controlled, including TAPE IN; six sets if the EXTERNAL PROCESSOR IN jacks are
used also as an auxiliary input.
• *fPe °^tpu,s
{10° ohms) to Perfectly interface with any type of tape recorder.
This
technique allows
^ recorder- including DAT and DCC. and insures the best recording characteristics
independently of the cable used and the load impedance of the tape recorder inputs.
• Buffered tape outputs to preserve input-source-signal integrity and preclude "loading" of the signal-source
components and distortion. Buffering prevents the degradation of the source signal caused by most tape recorders
when they are connected to the tape outputs. The buffers insure that the integrity of the internal signal path will not
be affected by the tape recorder used.
• H.r°n,HPa:e,.;SWitChab,e proclessor l0°P' Shortens the signal path by switching the processor in and out of the circuit
directly on the main circuit board. Allows the processor to be removed totally from the circuit when not needed.
• All high-grade construction parts including 1%. Roederstein metal-film resistors and all metallized-film. precision
capacitors throughout. These components helps the GFP-345 achieve lower noise levels and lower signal
degradation than preamps selling for many times its price.
• Extremely-low-noise, optional phono preamplifier board (PHO-802A) with virtually zero RIAA error, optimized for
high-output mov.ng-co.l and moving-magnet cartridges plus direct-coupled signal output for maximum bass
impact and dynamic response. These features will provide the flattest, lowest-noise. lowest-distortion response
from a phono cartridge and musically satisfying reproduction from any vinyl record.
• J-°^',mpedance- RIAA-equalization network. This unique network insures the lowest achievable noise level in a
pnono preamp.
UNPACKING THE GFP-345
ariurwn^rr:nnnithe 'T^ it^as1car«,ul|y inspected 'or physical imperfections and electrical performance as
fnsure a orolct fS2S« « VCo"tro,-™S- al°"9 with full operational and mechanical testing, should
insure a product flawless in both appearance and performance. After you have unpacked the GFP-345 inspect it for
poss i b Hty oTt^a n s
do
rtet km damn no TZT al!packing materials as theY are intended to reduce to a minimum the
^ a ^ . 6 pr0dUC' ever need t0 ^ shipped again. In the unlikely event damage has
damage <UnbeiJSiat^ * ^ 'm y and request the name of ,he carrier so tha» a written claim to cover shipping
RIGHT TO A CLAIM AGAINST A PUBLIC CARRIER CAN BE FORFEITED IF THE CARRIER IS NOT NOTIFIPn
^cdc^i!IN WRITING AND IF THE SHIPPING CARTON AND PACKING MATERIALS ARE NOT AVAILABLE FOR
INSPECTION BY THE CARRIER. SAVE ALL PACKING MATERIALS UNTIL THE CLAIM HAS BEEN^SETTLED.^
INSTALLING THE GFP-345
Although the GFP-345 does not generate much heat, you will help insure its long-term, trouble-free operation if vou keen
should SrbeSS?9? Th radiators or hot-airducts, and provide reasonable ventilation. The GFP-345
p'acad w,t.h 0,her heat-producing components in a cabinet or enclosure lacking free air flow. If placed
the component hea,'producmg component'such 33 a power amplifier, please allow a minimum of three Inches between
For use in professional installations, the GFP-345 may be mounted in a standard 19-inch
rack-mount adaptors available through ADCOM dealers.
rack using the optional RM-3
CONNECTING THE GFP-345
7m dSpe"d °n the quality of the 'nterconnection of both the preamplifier and its
associated equ£ment. All the input- and output-signal connections should be made only with hiqh-aualitv low-loss
audio cables. LEFT CHANNEL and RIGHT CHANNEL inputs and outputs are cleaHy labelled on the r2r panel
2