Genesis Advanced Technologies 2JR User Manual

2jr

absolute fid e l i t y®

Owners Manual and Set-up Guide
Genesis 2.2 Junior Loudspeaker

Contents

SET-UP GUIDE 1

PLANNING THE PLACEMENT 1
UNPACKING 1
LOUDSPEAKER CONNECTIONS 2
LOUDSPEAKER CONTROLS 3
SERVO-CONTROLLED BASS AMPLIFIER PROTECTION 4
A WORD ABOUT FINISH 4

TUNING THE SYSTEM 5

MIDRANGE AND TWEETER CONTROLS 5
BEGIN WITH BASS TUNING 5
IMAGING AND SOUNDSTAGE 7

THE REFINEMENT STAGE 9

MAKE ONE CHANGE AT A TIME 9
DEFINING THE SOUNDSTAGE 10
APPROPRIATE MID-BASS/LOW-BASS BALANCE 10
ROOM TREATMENT 11
MASTERING THE REFINEMENTS OF THE SYSTEM 12

THE TECHNOLOGY 14

DESIGN PHILOSOPHY 14
THE GENESIS RIBBON TWEETER 16
48INCH MIDRANGE RIBBON 16
THE SERVO-BASS ADVANTAGE 17
THE SERVO-CONTROLLED WOOFERS 18
SERVO-CONTROLLED BASS AMPLIFIER 19
THE ACOUSTIC SUSPENSION 19
SPECIFICATIONS 21

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A Message from Genesis

Congratulations! And Thank You!
You are now the owner of one of the finest loudspeakers in the

world! The Genesis 2.2 junior (or G2jr) is the result of technologies
developed and refined over the past 40 years in constant
production.

The G2jr loudspeaker is designed to reproduce music (and film) at
live listening levels with virtually no restrictions on dynamic range,
frequency response, or imaging capabilities in a medium to large
room. This is absolute fidelity® the ability to reproduce the musical
event faithfully, as was intended by the performer or filmmaker.

However, the G2jr is not meant to reproduce music at ear-splitting
levels. If you are looking for just LOUD, this is the wrong
loudspeaker. A Ferrari and a Caterpillar may have the same price
and horsepower, but they are very different vehicles and you
wouldn’t use your Ferrari to move a load of gravel.

While other loudspeakers are designed to reproduce music
perfectly for one listener at one precisely located sweet-spot, the
G2jr is designed to deliver music to a larger audience, seated or
standing. In a typical listening room, the listening sweet-spot
extends in width to a couch or loveseat. Vertically, it encompasses
any height from approximately 26” (70cm) to 68” (1.7m).

Please read this Owners Manual and Set-up Guide to get the
maximum enjoyment out of your purchase. Also, please check
back at our website at www.genesisloudspeakers.com. We will put
the latest updates, tips and tricks, and support for our owners on
our website and in our newsletter.

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Please write the purchase details of your Genesis 2.2 Junior
here for future reference. Remember, send in your registration
card to extend the limited warranty on your loudspeakers.

Bought from: ____________________________
____________________________
Date: ___________________________________

Serial Numbers:

Warranty Statement and Extended Registration Card

should be placed here.

Please check with Genesis should they be missing.

Remember – the warranty on your Genesis loudspeakers is

only for 90 days unless the Extended Registration Card

is sent directly to Genesis.

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Set-up Guide

Now that you have your new Genesis 2 junior loudspeaker, we

realize that you can’t wait to hook it up and start the music!

However, we want you to set it up correctly to derive the greatest
enjoyment from your purchase.

So, please read this set up guide (even if your dealer is setting it up
for you!) before you proceed.

Planning the Placement

Before you even have the loudspeakers delivered, it would be a
good idea to make a plan of where you will place them. You will
not need a very large room, but at an absolute minimum the room
should be about 15 feet (4.5m) wide where the speakers will be
placed.

You should have a minimum of at least 18 inches (0.45m) of space
behind the speakers. The listening position should be a minimum of
11 feet (3.3m) from the front of the midrange ribbon to allow for
proper integration of the drivers. Since the loudspeakers
themselves are 28 inches (0.7m) deep, the room has to have a
minimum length of about 18 feet (5.5m) to allow for some space
behind the head of the listener.

In a typical placement, the midrange/tweeter wings will be placed
so that the two columns of tweeters are on the inside, and between
about seven feet to nine feet (2m to 2.7m) apart measured from the
centre of the line of tweeters to the centre of the other line of
tweeters. The speakers fire straight ahead with no toe-in.

As the room will greatly influence the sound of your system, fine­tuning adjustments in placement will be necessary. Every room will
be different, with doorways, furniture, closets, wall construction and
covering, etc. all making a significant impact on the sound.

Unpacking

The Genesis 2.2 junior will arrive in a two large wooden shipping
crates. As the speaker weighs well over 200 lbs each (much more
with the shipping crates), we suggest that you enlist the help of a
couple of strong friends, or hire some help. We are not liable for

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damage (to either the speakers or your backs!) during unpacking
and setting up.

As the speaker tilts up and out of the crate, and it is extremely
heavy, we suggest that you position the crate approximately at the
final position where you want the loudspeaker to be.

The top, front and one side forms a 3-sided lid to the crate. Once
this is removed, the speaker can be easily tilted up and out of the
crate.

The box containing the crossover, the servo-bass amplifier and the
woofers are decoupled from the midrange/tweeter panel and the
base of the loudspeaker with shock absorbing rubber de-couplers.
There will be three shipping bolts that secure the woofer box during
its journey to your home. Remove these bolts before tilting the
loudspeaker out of its crate.

There are also foam wedges securing the woofer box for shipping.
These foam wedges should also be removed at this time.

After unpacking, we strongly suggest that the crates be dismantled,
flattened and safely stored away in a cool, dry place. It is expensive
to custom build crates strong enough to transport these
loudspeakers without damage should you need to relocate or
move.

Loudspeaker Connections

Once you have the G2jrs close to where you think they will
ultimately be, connect the loudspeaker to your power amplifier
using a pair of high quality loudspeaker cables (not supplied) to the
5-way binding posts. We have designed a “Loudspeaker Interface

Cable” specifically for Genesis loudspeakers for this critical job.

More information can be found from the Genesis website or from
your dealer. However, any well-designed loudspeaker cable can be
used.

A power cord is also needed to power the built-in servo-bass

amplifier. A “starter cord” is provided with the loudspeaker, however

the bass will improve with a higher-quality power cord. As the G2jr
contains two 400W bass amplifier modules per side, make sure
that any power cord you use is up to this job. An “Amplifier Power
Interface Cable” is also available from Genesis for this.

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Loudspeaker Controls

You will notice four control knobs on the back of the G2jr. These
are labelled “BASS GAIN”, “LOW PASS”, “TWEETER” and “MIDRANGE”.

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Set them initially pointing straight up – the 12 o’clock position. This
is the nominal flat position and will work for the majority of
installations. For a minimum-sized room, the bass gain should be
set at 3 (the 9 o’clock position).

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Servo-Controlled Bass Amplifier Protection

The servo-bass amplifier has numerous protection circuits built in to
protect both the amplifier and the woofers. If you over-drive the
amplifier, it will self-protect and you will hear clicking or snapping
sounds. This is caused by the amplifier limiting current to the
woofers (much like the over-rev fuel-cut off in car engines).

If that happens, turn down the volume of your system to protect
your hearing and your speakers. The amplifier is designed to be
current-limited to 20amps – this is more than enough to supply over
1600W transients to each of the 12” woofers. However, the servo­system in the G2 is not compression or dynamic limited. Hence, it
is possible to play the system too loud, and damage the woofers
(and also possibly blow out your ribbons).

The amplifier, although it is very efficient, also has a thermal cut-off
to protect against over-heating. Should the bass amplifiers turn off
and the back plate is very hot to the touch, turn the system off until
it cools down again. Additional ventilation might be needed at the
back of the speakers should this happen too often.

A Word about Finish

The midrange/tweeter baffle of the G2jr is constructed out of solid
high-gloss cast acrylic. Acrylic was picked for its sonic properties as
well as its beauty. However, acrylic is a soft material that can
scratch easily.

Every G2jr is delivered with a 3-stage acrylic polish system by
Novus, and fine micro-fibre polishing cloths. Do not use other
cleaners or polish on your G2jr. In particular, DO NOT use paper
towels to wipe the surface of your loudspeakers. Paper fibres are
extremely abrasive and can introduce fine scratches on the surface

that will “cloud” the finish. If dusting is necessary, we recommend a

soft feather duster, or a can of compressed air.

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