Genesis 1.2 Owners Manual And Set-up Manual

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Owners Manual and Set-up Guide:

Genesis 1.2 Loudspeaker System

Contents

1 SET-UP GUIDE 6

1.1 UNPACKING 6

1.2 PLACEMENT OF THE GENESIS 1.2 LOUDSPEAKER 7

1.3 SERVO-CONTROLLED BASS AMPLIFIER SYSTEM 8

1.4 POWER CONNECTIONS 9

1.5 WOOFER CONNECTIONS 9

1.6 SERVO-BASS INPUT CONNECTION 10

1.7 MIDRANGE/TWEETER CROSSOVER CONNECTIONS 11

2 OPERATING YOUR G1.2 12

2.1 SERVO-BASS AMPLIFIER REMOTE 12

2.2 BASS CONTROL ADJUSTMENTS 13

2.3 SERVO-CONTROLLED BASS AMPLIFIER PROTECTION 14

2.4 CROSSOVER CONTROLS 15

3 TUNING THE SYSTEM 15

3.1 B

3.2 I

3.3 PHASE CONTROL 18

3.4 FURTHER ADJUSTMENTS 19

4 THE REFINEMENT STAGE 20

4.1 R

4.2 MAKE ONE CHANGE AT A TIME 20

4.3 D

4.4 APPROPRIATE MID-BASS BALANCE 21

4.5 OPTIMIZING DEEP BASS 21

4.6 R

4.7 M

EGIN WITH THE BASS LEVEL 15

MAGING AND SOUNDSTAGE 17

UNNING-IN THE SYSTEM 20

EFINING THE SOUNDSTAGE 20

OOM TREATMENT 22

ASTERING THE REFINEMENTS OF THE SYSTEM 23

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5 THE TECHNOLOGY 24

5.1 D

5.2 T

ESIGN PHILOSOPHY: DIPOLAR LINE SOURCE 24
HE GENESIS RIBBON TWEETER 26

5.3 75-INCH MIDRANGE RIBBON 26

5.4 T

5.5 T

HE SERVO-BASS ADVANTAGE 27
HE WOOFER TOWER 28

5.6 SERVO-CONTROLLED AMPLIFIER/CROSSOVER 28

5.7 THE CROSSOVER 29

5.8 CORIAN™ BAFFLE, WINGS AND BASES 30

SUMMARY 30

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Genesis Advanced Technologies

654 S Lucile St
Seattle, WA 98108 USA

Tel [phone] Fax [phone]
www.genesisloudspeakers.com

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A Message from Genesis

Congratulations!

You are now the owner of the best loudspeaker system in the world.
The Genesis 1.2 Loudspeaker System is the embodiment of our

philosophy of “
musical event faithfully, with no compromise, in your home.

The G1.2 is commissioned for the most discerning music lovers in the
world. Every system is custom made and personalized. It
encompasses the state-of-the-art in transducer, crossover, and
electronics technology and craftsmanship.

A Short History: In June 1979, Mr. Arnie Nudell, the founder of
Infinity Systems and Genesis, headed a small team at Infinity™- that
conceived and created the remarkable Infinity Reference Standard
(IRS) using technologies conceived and developed since the Servo
Statik 1 in 1968. The IRS soon came to be known as the world’s
ultimate reference system for the reproduction of music. Fourteen
years later in June 1993, Nudell, in collaboration with Paul McGowan,
introduced to the world the Genesis I – a new benchmark for the
reference loudspeaker system. In 1999, the GI was upgraded to
become the G1.1, with a longer and larger midrange ribbon, and
ribbed aluminum woofers.

absolute fidelity



” – the ability to reproduce any

The current Genesis 1.2 embodies over 40 years of evolution and
revolution in loudspeaker design. Every single aspect of the G1.1 was
examined, down to the size and material of the washers under the
heads of the screws used to secure the wings to the Corian
midrange/tweeter panel, in the quest to improve on perfection.

The G1.2 is the current ultimate reference for the reproduction of
music. Whereas many other products might excel in one or more key
areas, the G1.2 excels in every important aspect of sound
reproduction :-

Spectral Coherence: The sound must be absolutely seamless, as if
the lowest bass frequencies were cut from the same cloth as the

-

Infinity™ is a trademark of Harman International, and is not associated with Genesis

Advanced Technologies in any way.

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highest frequencies. Despite the use of different materials and
technologies – kapton and mylar ribbon, and solid aluminum cones,
the crossover between the tweeters, midrange, and woofers cannot
be discerned even by trained, experienced listeners.

Pace, Rhythm, and Timing: The G1.2 plays rock, jazz, dance music,
contemporary, and Latin American as well as it does classical. It has
the speed and driving rhythm to dance to, and the timing to keep your
toes tapping. Be the pace slow and deliberate, or quick and rhythmic,
the musician’s intention is always conveyed faithfully.

Harmonic Structure: All instruments must be readily identifiable by
their harmonic content. There must be a uniformly consistent energy
vs. frequency ratio throughout the entire audio spectrum with uniformly
low distortion in order for this to be achieved. Tonal colors and
contrast must be faithfully reproduced so that a Steinway is easily
distinguished from a Bosendorfer, a Grand Amati easily distinguished
from a Grand Stradivarius.

Macro Dynamic Capability: Sometimes characterized as “dynamic
range”, macro-dynamics can be best defined in musical terms – from

mezzo forte (mf or medium-loud), to triple forte (fff or very loud).

Nevertheless, the G1.2 is not designed to be played LOUD. It plays at
realistic but not ear splitting levels.

Micro Dynamic Capability: This describes the ability of a system to
resolve the lowest level material with as much articulation and imaging
as it does at the louder levels. The most difficult areas for loudspeaker
systems to reproduce well are the extremes, i.e. the micro-dynamics

from ppp to p (pianissimo to piano), and the last part of the macro-
dynamics f to fff (forte to triple forte). This is most noticeable in the

extraordinary amount of detail still heard during low-level listening at
night.

Imaging and Soundstaging: A reference system must be able to
recreate a deep, tall and wide soundstage with accurate imaging
when reproducing recordings that contain such information. The effect
is that of being able to clearly distinguish the specific locations
(left/right, forward/back, up/down) at which the instruments are
playing, and to be able to hear their performance from the perspective
of the venue in which it was recorded.

These concepts can be understood in a basic sense by examining the
temporal coherence of a loudspeaker system. If each frequency of the
audio spectrum arrives at the listener at the same time, spatial cues

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emanating from a performance are reproduced, i.e. sound waves
bounced from the walls, floor and ceiling of the venue, attenuated in
amplitude and displaced in time, can be resolved in space by two
stereo channels. If a reference system can slice time “thinly enough”,
and have excellent low-level resolving power, one can experience
many such bounces off surfaces; all displaced correctly in time,
ultimately defining the soundstage and ambience of the venue.

Low Harmonic and Intermodulation Distortion: The greatest sound
pressure peaks should create almost no distortion whatever. Many
loudspeakers begin to experience signal compression at loud levels.
When this happens, music becomes distorted as sounds compress.
Reference systems cannot exhibit these symptoms. Just as live music
sounds relaxed at the loudest levels, so must the reference system.

Emotion and Intent: The hardest area to define is the human feelings
of emotion and intent. The reference loudspeaker must be able to
convey the emotions the musicians felt and their intents when they
performed the piece of music. Happy music must be reproduced as
happy, solemn pieces must be solemn. We have devised no way to
measure the ability of the loudspeaker to convey emotion and intent,
and it boils down to the art of the loudspeaker design to achieve this.

The net result is that the G1.2 can play all music equally well, from
rock to rap, from blues through classical and jazz to zydeco, from a
solo vocalist to a big band. As a reference system, there should be no
music that is out of bounds.

Please read this Owners Manual and Set-up Guide to get the
maximum enjoyment out of your purchase. Also, if you have access to
the internet, please check back at our website often. The address is

www.genesisloudspeakers.com. We will post the latest updates, tips &

tricks and support for our customers. If you have any questions,
please call, and we will be glad to answer to the best of our ability.

Most of all enjoy your music!

Best Regards

Gary L Koh,
President and CEO

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1 Set-up Guide

Now that you have your new Genesis 1.2 loudspeaker system, we
realize that you can’t wait to hook it up and start playing! However, this
is a big, complex system. There is no “quick” set-up.

You will need at least four strong people. Be prepared to allocate 4 to
6 hours to the initial unpacking, set-up and configuration. Mentally
condition yourself for hard, manual work that must also be done
carefully and precisely so as not to hurt your precious new acquisition
and to not hurt your backs.

1.1 Unpacking

The G1.2 system is packed in six (6) wooden shipping crates:

• two crates containing a woofer tower each,

• two crates each containing two wings per crate and a Corian

panel holding the midrange ribbon and tweeters,

• a crate with the two midrange/tweeter wing bases and the two
woofer tower bases, and

• finally a crate with all the electronics and cables.

To remove the contents of all the crates, you will need at least four
strong people – the Genesis 1.2 loudspeaker system weighs over
2,000lbs – to move the various parts of the speakers around. We
cannot be held liable for damage to either the speakers or your backs
during unpacking and setting up.

First, determine where you will be placing the speakers. They are
extremely heavy, so some forward planning will come in handy.
Depending on the surface they are set on, you may find that the
speakers are almost impossible to shift after setting up. Please see
the next section on placement and carefully mark the places where
you will set up the four columns, and unpack the bases and get them
in place first.

Next, place the woofer towers on their bases. The midrange/tweeter
wings are set up by first inserting the center Corian panel into the
foundation. The two wood wings are placed on either side, and
secured to the center panel with the supplied screws.

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Do not try to use spikes or other third party suspension systems. The
weight of the G1.2 is more than sufficient to anchor them to the floor.

1.2 Placement of the Genesis 1.2 Loudspeaker

The G1.2 requires a large room in order to give the speaker ample
space from the walls so that it can perform at its best.

A typical room size is 29 ft x 48 ft with at least 10 ft ceilings. A good
starting position for the midrange/tweeter panels is 15 feet into the
room as measured from the front wall (the wall behind the speakers
which you look at as you are seated listening to the speakers) to the
face of the speakers.

You will want to sit 18 feet away as measured from the face of the
speakers to the ears. Due to the length of the line-source, a minimum
distance of 12 feet is needed for driver integration. It would be best to

have approximately 15 feet behind
you to the rear wall. In case there is
insufficient space behind the listener,
sound absorbing treatment can be
used to reduce the rear reflection.

Place the column of tweeters on the
inside, and position the midrange/
tweeter panels so that the centers of
the tweeters are about 80 inches
apart. This will mean that the edge of
the midrange/ tweeter wings are 35
inches apart at the closest point.Next,
position the woofer towers just to the
outside of, and behind the mid/tweeter
wings.

Having the woofers diagonally six feet

behind the midrange/tweeters works
well. Placing the woofer towers asymmetric in the room results in a
smoother bass response than if the woofers are symmetric. We
generally like the right woofer tower further outside the right wing, and
the left woofer tower further behind the left wing.

If you have a much more space and a wider room, the woofer towers
can be also be positioned outside the mid/tweeter wings in an arc
such that the center of the woofer cone and the tweeters are
equidistant from the listeners.

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For some rooms, there may not be enough space and you will have to
adjust as you see fit. In a smaller room, the speakers can be just 20%
of the way into the room, and the listening position can then be 20%
from the rear wall. (see the diagram above). If you have to sit less
than 12 feet in front of the speakers, you have too small a room to
accommodate the Genesis 1.2’s.

1.3 Servo-Controlled Bass Amplifier System

The 12-channel Genesis Servo-Controlled Bass Amplifier comes in a
total of ten (10) modules. It comprises:

1) Left and Right Control Modules with left and right balanced

inputs and a pair of control outputs (each Control Module is
built as a dual-stereo unit, but only one input is used in each).
The Control Modules have a standard IEC power input.

2) Two left-channel Servo-Amplifier Modules with three 50-amp

Speakon™ outputs per module and a blue PowerCon™ power
input.

3) Two right-channel Servo-Amplifier Modules with three 50-amp

Speakon™ outputs per module and a blue PowerCon™ power
input.

4) Four 2kVA Power Transformer Modules each with a grey

PowerCon output (one per amplifier module)

Cables and accessories included in the package are:

1) Four Power Umbilicals with a grey PowerCon™ at one end

and a blue PowerCon™ at the other end

2) Four Control Interface Cables (CIC) with 7-pin Neutrik™

connectors at each end.

3) Two Servo-Bass Interconnect Cables (SBI) left and right with

bananas (optionally spades) at one end and Neutrik XLR
connectors at the other end.

4) Two amplifier acoustic suspensions, one for each stack of

amplifiers.

5) Six power cords are also included (the user is encouraged to

use their preferred brand of high-end power cables and
connectors)

In the typical configuration, the 12-channel Servo-Controlled Bass
Amplifier is placed in two stacks – each stack near the woofer tower

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that it will drive. The Control Module is stacked on top of the two
Servo-Amplifier Modules and the entire stack is on an amplifier
acoustic suspension system. Two Power Transformers are placed
behind each stack.

Next, using the supplied 7-pin Control Interface Cables, link the
Control Module to each Servo-Amplifier Module. Plug the included
IEC power cord into the Control Module.

1.4 Power Connections

Each amplifier module is powered by a separate external Power
Transformer. By having the power transformer external to the
electronics, and potential vibration or electromagnetic interference is
isolated from the sensitive low-voltage electronics.

When you make the power connections, pay close attention to the
way the connector works. This connector is a 20 amp twist-lock
Neutrik™ PowerCon™. By looking carefully, it will be obvious as to
how it works. It only goes in one way and you cannot put it in wrong.
However, you can fail to put it in all the way. Line up the alignment
pins on the connectors, push the plug in, and twist it clockwise until
the lock "clicks" in place to keep it there.

To remove the connector, pull the silver locking tab outwards, twist it
anti-clockwise, and pull out.

The Neutrik™ PowerCon™ 20 amp connectors used are the best
solution we have found for passing power, but they are not designed
to make/break connections. Hence, it is important that they are
connected before supplying power to the Power Transformers.

Use the included Power Umbilicals to connect between the Amplifier
Modules and the Power Transformers. Next, plug the included IEC
power cord into the Power Transformer. Leave it unplugged from the
wall outlet until you have all the rest of the connections completed.

1.5 Woofer Connections

Included with your Genesis 1.2 is a set of four large cables (with 3
channels each) used to connect the woofer towers to the Servo­Amplifier Modules. Each end of the cable is clearly marked, AMPLIFIER

SPEAKER. It does not matter which connector is attached to which

or
input or output as long as the correct amplifier modules are used for
the left and right towers. It also does not matter which SBC is used for
the left or the right; however, one pair is marked with

SPEAKER in red lettering, and the other in white lettering for

AMPLIFIER or

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