Adcom GTP 400 Owners Manual

Page 2

FEATURES

Very-low-impedance Main Out (1000)

Very-low-impedanee power supply for hast decoupling and bypass
Direct-coupled outputs with very-low DC offset

Very-wide dynamic range for compatibility with digital sources
Full-Class-A phono preamplifier and high-level circuits

Very-fest, linear-gain proprietary semiconductors operating in full Class A
Feedback Bass and Treble tone controls

Full electronic Isolation of Tape Obtputs to preserve signal Integrity. prevent interaction.
and insure best signal quality from both Main and Tape Outputs

Separate Recording and Listening selectors which allow you to simultaneously record
one input while listening to a dlflerent input

Digital FM/AM tuner section with presets and memory for eight FM and eight AM stations
I Built-in protection from AC-llne spikes and surges

IMPORTANT NOTICE

The GTP~400 is covered by a valuable limited Warranty, which assures you of tectory-spcnsored service
during its applicable period. The considerable benefits of this Warranty and Its few reasonable limitations are
spelled out in the enclosed mum-pan Warranty card. Should you ever have any questions about this product
or wish to be advised of luture modifications and accessories for it, it will be indispensable for us to have the
return portion of the Warranty Card on file. Please be sure to fill out and return the appropriate portion or the
Warranty Card to ADCOM Service Com. being sure to fill in the serial number which you will find printed on
the rearpanei of the unit. and all other pertinent information. Should you find any discrepancy. or if the
Warranty Card is missing. please notify us Immediately so that your rights under the Warranty may be protected.

Page 3

INTRODUCTION

Please read thoroughly the operating instructions for the GTP»4OO before connecting or attempting to operate
this unit. For your own benefit. follow all the instructions in this manual and save it for future reference.

Your ADCOM GTP~400 incorporates some of the most advanced thinking in linear-gain. very-fast semiconduc-
tor design. Its superior perturrnance is the result of a thorough re-evatuation of all factors affecting analog
audio performance in he Digital Age; factors such as headroom, dynamic range, input-output linearity and

a minimum the possibility of transportation damage, should the product ever need to be shipped again. in
the unlikely event damage has occurred, notify your dealer immediately and request the name ot the carrier
so that a written claim to cover shipping damage can be initiated. .

THE RIGHT TO ANY CLAIM AGAINST A PUBLIC CARRIER CAN BE FORFEIT ED IF THE CARRIER IS
NOT NOTIFIED PROMPTLY IN WRITING AND IF THE SHIPPING CARTON AND PACKING MATERIALS
ARE NOT AVAILABLE FOR INSPECTION. SAVE ALL PACKING MATERIALS UNTIL THE CLAIM HAS
BEEN SETTLED. '

INSTALLING THE GTP-4OO

For use in professional installations, the GTPv400 may be mounted in a standard 19-inch rack using the
optional RM-a rack mount adaptors available through ADCOM dealers.

CONNECTING THE GTP-400

The performance of the GTP-400 depends on the quality of the interconnection of both the Tuner/Preamplifier
and its associated equipment All the output signal connections should be made only with high-quality, low-loss
audio cables. LEFT and RIGHT inputs and outputs are dearly labeled.

NOTE

Whenever connections to or from the GTP~400 are being made, be certain all associated components are
turned oft.

AMLOOPIII

E and AMI. It does not matter which wire goes to which of the two screws. By swinging the ferrite loop out
and away from the rear panel of the GTP-400, you can orient" the antenna for best reception of desired
stations with minimum noise. In some very noisy locations. it may be necessary for best reception to remove
the antenna from its bracket and position it away inom the chassis oi the GTP-400. The length at the wires