Pioneer qc 800 a owners manual

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GC-BDDA

OPERATING INSTRUCTIONS

PIONEERI

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Thank you for the confidence you have shown us in pur-
chasing the new Pioneer 4-channel preamplifier, model
QC-BOOA. It will serve as your passport into a new world of
listening experience - the world of Pioneer 4-channel
stereo sound. Connected the two stereo power amplifiers
and four speakers, model OC-BOOA will give you the most
thrilling of all sound adventures: wrap-around 4~channel
hi-fi sound.

FEATURES

ACOUSTICAL FIELD REPRODUCTION FROM
4-CHANNEL STEREO

The control amplifier section consists of four separate
channels having excellent frequency response and very low
distortion, providing for 4-channel discrete reproduction of
a 4Achannel source (recorded tape).

CHOICE OF MATRIX DECODER

The OC-800A offers a choice of two matrix decoder, the
regular matrix and the 50 matrix. The source may be a
matrix recording or FM broadcast of a matrix recording.
The result is realistic 4-channel reproduction.

MATRIX CIRCUIT FOR ORDINARY 2-CHAN-
NEL STEREO

Use of the internal matrix circuit enhances the effect of or-
dinary 2-channel stereo source material, over and above
that normally obtainable.

HIGH STABILITY IN HEAD AMPLIFIER

The head/equalizer amplifier is a professional design with
three directly coupled, Iowmoise silicon transistors and
emitter-to-emitter feedback, These features result in ac-
curate equalizing characteristics with a widedynamic range
and stable performance.

FET-EOUIPPED CONTROL AMPLIFIER,
SWITCH-TYPE TONE CONTROLS

The tone control amplifier is a directly coupled threestage
design with a low-noise FET in its first stage. Its high, stable
input impedance guarantees precise tone control at any
setting without affecting the head amplifier. The tone
controls are true switch types regulating negative feedback,
and each switching step has an effect of i3dB. Whats
more, separate controls are provided for the front and rear
channels, permitting complete control over the total tonal
quality.

LEVEL CONTROLS FOR EACH CHANNEL

There's a level control for each of the four channels, per-
mitting complete control over the sound field intensity
even if different types of speakers are used for the front
and rear.

FULL ARRAY OF TERMINALS AND AUXIL-
IARY CONTROLS

Inputs accept two turntables, two tape decks, a tuner and
two other sound sources. Separate headphone jacks are
provided for monitoring the front and rear channels. Con-
trols include an output on/off switch, a ~20dB muting
switch, high and low filters and tape monitor switches.

VERSATILE TAPE-TO-TAPE DUPLICATING
FACILITIES

Normal 2-channel tape-to-tape duplicating is possible too,
as well as 4-channel tape-to-tape duplicating.

ALL NEW 4-CHANNEL" EXTERIOR DESIGN

Cabinet and control panel are visual symbolizations of the
Pioneer "ll-channel concept, with a modernistic and
logically arranged control panel.