Dynaco QD 1 Owners Manual

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Extracted text from Dynaco QD 1 Owners Manual (Ocr-read)

Page 1

Nynlaca

This numbcv must be men-
Iioned in all communicalions
GUADAP I o R concerning [hi5 equipment.

INSTRUCTIONS FOR
ASSEMBLY
OPERATION

nlymaca in"; ........ .......

Page 2

CONTENTS

Amplifier Suitability .............. 3 How Dynaquad Works ............ 12
Amplifier Connections ............ 4 Kit Assembly Instructions ......... 14
loudspeaker Connections ......... 5 Kit Parts List ..................... 19
Loudspeaker Suitability ........... 6 Pictorial Diagram ................ 20
Loudspeaker Placement ........... 7 Simplified Connection Diagram .. .. 22
How To Use The Quadaptor ...... 8 Service and Warranty ............. 23
Listening to Dynaquad Sound ...... 10 Schematic Diagram ............... 24
INTRODUCTION

The Dynaco QD-l Quadaptor serves as a junction box between
the outputs of a conventional two channel stereo ampliﬁer or
receiver, and four loudspeaker systems. It is a passive device,
requiring no AC power.

The Quadaptor provides the simple but essential circuitry to
recover four separate signal components from two stereo channels
utilizing the Dynaquad system. It facilitates accurate electrical
balance in the system to attain maximum separation. It also pro-
vides for listening to the front speakers alone as conventional two-
channel stereo.

The Quadaptor does not add anything to the original program,
n0r does it in any way alter the content or distortion levels of the
signals. It is not a synthesizer. A substantial portion of the
recorded material in normal two channel sources has been hidden
up to now and the Quadaptor simply makes maximum eﬁ'ective
use of all of the information which has been recorded. A uniquely
sirnple technique of ambience recovery in Dynaquad sound reveals
this added presence or realism in your present stereo record and
tape libraries, and from stereo FM broadcasts. New source mate-
rial utilizing the Dynaquad recording technique will contain the
four directions of sound in the two conventional channels.

A diagram of the connections appears on page 22.

Page 4

AMPLIFIER CONNECTIONS

For your convenience in making secure connections, and to
avoid problems which may arise from stray strands of wire, twelve
spade lugs have been supplied which should be attached to the
bared wire ends that will connect to the Quadaptor. These may be
either soldered, or crimped around the wire with a pair of pliers.

The four connections from the left and right ampliﬁer speaker
outputs are made directly to the lower terminal strip on the
Quadaptor. No other equipment should be connected to the same
set of ampliﬁer terminals, to avoid any possibility of excessively
loading the ampliﬁer. Correct polarity is essential. The left
ground or common ampliﬁer terminal is connected to the extreme
left Quadaptor input terminal, etc.

If the ampliﬁer provides connections for more than one set of
Speakers, it is assumed that the main outputs will be used for this
Dynaquad system. If the ampliﬁer includes switching provision
for simultaneous operation of an additional set of speakers (a re-
mote system) you should avoid such use. When used as directed
with 8 ohm speakers the Dynaquad system provides a load on the
ampliﬁer between 4 and 8 ohms. Some ampliﬁers may not be
safely operated with loads of less than 4 ohms-a condition which
may occur if additional remote speakers are playing at the same
time as the Dynaquad system. Thus an ampliﬁer speaker selec-
tor switch which provides Main (A), Remote (B), and Main+
Remote (A+B) should not be used in the latter position when
listening to 4-dimensional sound.

Simultaneous connection of dynamic headphones is usually per-
missible because such outputs normally include series resistors to
raise the operating impedance.

Most current solid state ampliﬁers provide only a single out-
put, nominally 8 ohms- If a 4 ohm output is provided from a
transformer, or from a tube ampliﬁer, the Dynaquad system may
be connected to this output.

You may wish to fold out page 22 of this manual for a diagram
of the speaker and ampliﬁer connections.