Adcom GTP-600 - Manual (Page 11)

7) VIDEO SOURCE HOOK UP: All of the comments immediately above apply here also, especially the references
to patience and common sense.
You’ll notice that the standard composite video connections use RCA jacks color coded with yellow inserts. This
makes hookup easier by distinguishing the video signal patti from associated audio signals which also use RCA
style jacks.
The S-video connections require a multi-conductor cable with a 5 pin DIN connector at each end. S-video's
higher definition is due in part to separate transmission and processing of the luminance (black and white) and
chrominance (color) video signal components and combining them only when needed. S-video’s “white clip” and
“dark clip" levels are also different.
ADCOM makes no format recommendations. Standard (composite) video is a surprisingly vivid medium when
properly implemented and is far more common. S-video is not as widely available but does have better resolution
capability, particularly when S-video equipped videodisc players are used as sources.
8) TV HOOK UP: The TV monitor/receiver should be connected to either the GTP-600's standard (composite) video
or S-video monitor output and operated in accordance with the instructions furnished with the TV.
Generally speaking, connect the GTP-600's Monitor output to the TV’s VIDEO input (either an RCA jack or an S-
video DIN socket.) DO NOT USE the antenna input. If your TV has more than one video input, choose. (Read the
TV’s instruction manual first.)
Remember to keep the TV switched to the appropriate video input or you won't benefit from the GTP-600’s video
switching or on-screen display capabilities.
NOTE; With the proliferation of cable boxes, VCRs, videodisc players, satellite receivers, etc., there aré many
different system configurations. Unfortunately, it is impossible to cover all of them in this manual. Your
ADCOM dealer will be pleased to map out the correct connection scheme for your component combination.
9) VIDEO MODE SELECTION: The GTP-600 will not support both composite video and S-video formats
simultaneously. Choose one or the other and set the rear panel Video Mode switch © accordingly!
10) CENTER CHANNEL MODE SELECTION: The Center Mode switch © controls the output to the two center
channel preamp outputs ©.
A) The "Normal" (left) position filters bass frequencies below 100 Hz at a rate of 18 dB/octave. Use this position
when you've chosen a smaller center channel speaker that might not be capable of extended bass reproduction.
, Under these circumstances, “Normal" reduces speaker distortion and improves center channel clarity.
This position should also be used when the center channel amplifier is of lower power than the amplifiers
used for left and right front speakers.
B) The “Wideband" position sends a full range signal to the center channel amplifier and speaker. Use this
position when the center channel speaker is acoustically similar to your main left and right speakers and the
center channel speaker/amplifier combination is capable of extended bass reproduction.
C) Use the “Phantom” position when you're not using a center channel speaker. This position splits the Pro
Logic decoder's center channel output between both main speakers to synthesize a center channel image.
Although the “Phantom" position provides an excellent interim step in creating a home theater system, it is
somewhat less effective than using a center channel speaker.
NOTE; The center channel speaker is an essential component in a Dolby Pro Logic equipped home theater
system. It should be placed as close to your TV screen as is physically possible and must be magnetically
shielded to prevent image distortion and possible damage to your picture tube. In conjunction with Dolby Pro
Logic's "adaptive matrix” decoding, the center channel speaker improves coherency by anchoring the soundfield
to the screen's image. Dialog, for example, always appears to be coming from your TV regardless of where you're
sitting in the room. We strongly recommend a center channel speaker. Your ADCOM dealer will be pleased to
show you suitable choioes.
11) PREAMP TO POWER AMP CONNECTIONS: This is, once again, a matter of patience and common sense.
Remember, the only real difference between hooking up a two channel stereo music system and a five or six
channel home theater system is three or four more channels! Take care to observe channel continuity — the GTP-
600's right front output should go to the power amplifier's right front input, etc.