Earthquake Sound 600WRMS User Manual

MODEL

SuperNova MKVI

Class "J" Powered

Subwoofer

600WRMS

www.earthquakesound.com

Sound That Will Move You.

U S E R M A N U A L

Earthquake Sound Corporation | 2727 McCone Avenue, Hayward CA 94545

Introduction

SuperNova MKVI

Congratulations and thank you for choosing the new Earthquake SuperNova
MKVI Subwoofer as a key component for your audiophile system. The MKVI
subwoofers are designed to meet the highest standards of performance and
sound quality. In addition, Earthquake Sound’s IQ certification and patented
Class “J” circuitry ensure that the subwoofer meets and exceeds all industry
standards. The new MKVI subs include many unique technologies that allow
them to deliver “World Class” performance, even under extreme operating
conditions.

The SuperNova's are ruggedly constructed high quality audiophile subwoofers.
The Digital feedback class “J” Circuitry, allows the subs' built-in amplifier to
produce massive amounts of power with minimal heat production. This
patented circuitry delivers high efficiency in the range of 99% -- the typical class
AB amplifier runs at about 40 to 50%.

The MKVIs' amplifier offers a room correction technique that surpasses all
previous attempts. The intelligent “Back emf” drive circuit interacts with the
subwoofer design and memorizes system tuning frequencies as well as system
type. The information, which is stored in microprocessor, turns on a preset
group delay curve that serves as a correction reference. This information deals
only with time correction that moves the peaks and the dips in a room to a flat.
Once that is achieved, the user will resort to the final correction- EQ the room.
For that reason, Earthquake’s SuperNova MKVI is truly an intelligent system.
20Hz, 30Hz and 40Hz frequencies can be cut or boosted by a whopping 6dB,
these corrections help in producing wider range of listening position that is
unprecedented for the room.

SOUND LEVEL

DBA

90
92

95
97
100
102
105
110
115

DURATION

IN HOURS

8
6

4
3
2
1 - 1 1/2

1
1/2
1/4 or less

THE CHART (ON THE SIDE) SHOWS THE U.S. GOVERNMENTS

OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION (OSHA)

REGULATIONS WHICH WERE IN EFFECT AT THE TIME OF THIS

PUBLICATION FOR PERMISSIBLE NOISE EXPOSURE,

PER 29CFR1910.95, TABLE G-16.

Specifications Are Subject To Change Without Notice

CAUTION:

The SuperNova MKVI is capable of generating
high sound pressure levels. You should exercise

caution when operating this system. Long term
exposure to high levels of sound pressure will cause permanent
damage to your hearing. Sound pressure levels exceeding
85dB can be dangerous with constant exposure. Set your audio
system to a comfortable loudness level. Earthquake Sound
Corporation does not assume liability for damages resulting
from the direct use of the MKVI , and urges users to play the
MKVI at moderate listening levels.

2

Unpacking and Warnings

ITEMIZED LIST OF INCLUDED ITEMS:

1. One (1) AC Power Cable

2. One (1) Owners' Manual

3. One (1) Registration Card

4. One (1) Remote Control

5. One (1) SuperNova Subwoofer

When you have safely removed the subwoofer from the packaging and placed it in a safe area, perform a thorough physical inspection and report any damage to the
dealer that you purchased the unit from. We suggest that you keep the original packaging, and that it should be stored in a safe, dry place in case you’re required to
transport the unit. The customized packaging is specially designed to protect the amplifier from potential damage that can arise when shipping such a product.

SuperNova MKVI

WARNING!

CAUTION!

IMPORTANT!

Specifications Are Subject To Change Without Notice

Specifications & features are subject to change without notice. www.earthquakesound.com

To reduce the risk of fire or electric shock, do not expose this product to rain or moisture. Do not attempt to “lift the ground” by removing the
ground pin from the AC cable. Make sure that your household electrical wiring supports proper AC grounding techniques before plugging
in this product. Keep the heat sinks and top cover free of dust to allow for proper heat dissipation. Never expose this product to extreme
temperature. Always connect the audio signal path cable prior to connecting the AC mains.

No user-serviceable parts inside. Do not attempt to remove cover or repair this product, as severe electrical shock may result and it may
disrupt your warranty.

Make sure that your local AC voltage complies with the unit’s label. Damage caused by plugging this subwoofer into an AC receptacle of
the wrong voltage will not be covered by warranty.

3

Subwoofer Placement Guide

SuperNova MKVI

Why having two gains on a mono subwoofer is
a good thing?

Often you hear the term “subwoofers are non-directional”;
this is not true. Subwoofer placement is harder to pick when
two low frequencies are crossed. The wider the room, the
more directional the subwoofer. The easiest solution is to use
two subwoofers in the front: one on the left and a second on
the right. The signal to both is mono. In some applications,
users might have small front speakers or planar speakers.
Both speakers have an early roll off in the sub-harmonics.
The planar needs help from 150Hz on down, having two front
subwoofers placed on the left and the right is a healthy
solution to this problem.

Two Subs

While having two subwoofers is better than one, the MONO
signal that drives these subwoofer keeps them from
projecting the three dimensional images in the sub­harmonics. The use of two subwoofers allows you to cross
the subs up to 150Hz sound quality, imaging and staging.
The two-front-subwoofer-system is an excellent solution to
planar speaker’s low frequency response early roll off. When
locating these subwoofers in a close proximity to the stereo
satellite, the subs will enhance low frequency extension. It
will be better to have a stereo subwoofer to help in the lower
bass notes and their placement.

GOOD / This illustration shows a single subwoofer setup

The blue arrow represents the subharmonic
frequencies as they move always toward the sub in
the single sub system. The red arrow represents
the lows + mids + highs as they follow the action.

Note: The breakaway and the image separation.
best response when blue and the red are identical.

BETTER / This illustration shows dual subwoofer with mono signal

The blue arrow represents the sub-harmonic
frequencies as they move always toward the
middle in a mono-two-subs- system. The red arrow
represent the lows+ the mids+ highs as they follow
the action,

Note: the breakaway and the image separation.

If a bass Guitar player was standing on the left side of the
stage and he played an EE note (42Hz), then the right sub will
also respond to that and create havoc on the stage. In fact, if
you only have one single sub in the room and it’s placed on
the right side of the room, while the bass guitar player is
playing his music on the left side of the stage. As soon as he
hits the EE note, the sub speaks out on the right and
completely destroys the stage. To give you three­dimensional front-end bass that allows you to have a low
frequency dynamic stage, Earthquake designed dual input
circuits that use buffers to maintain your stereo separation on
the processor side while mixing stereo front signals to
produce 3D bass.

Specifications Are Subject To Change Without Notice

BEST / This illustration shows dual subwoofers with stereo+mono signals

In this illustration, the stereo subwoofers keep the
sub-harmonics dynamically synchronized in
motion with the rest of the audio systems. Fully
complementing the sub-harmonics for mids and
the highs

4