6 Supernova MKVI & MKVII Manual
Earthquake Sound Corp. | (800) 576-7944 | www.earthquakesound.com
Congratulations and thank you for choosing the Earthquake Supernova MKVI/MKVII Subwoofer with IQ digital
feedback Class “J” amplifier as a key component of your audiophile system.
The MKVI & MKVII series utilizes the revolutionary and patented Class “J” amplifier circuitry, SLAPS (Symmetrically
Loading Audio Passive System) passive radiator and especially designed high excursion driver. All those
components are encased in high quality cabinet specifically designed to reduce internal resonance and diffractions,
allowing the Supernova to deliver a crisper bass and more accurate response.
Individually handcrafted in the USA, the Supernova MKVI and MKVII Subwoofer Series meets and exceeds all
industry standards or performance and quality. With uncompromised “World Class” performance and superior
technology, the Supernova MKVI and MKVII Subwoofer Series epitomizes the state-of-the-art in subwoofer design.
Introduction
IQ Digital Class “J” Amplifier
T h e I Q d i g i t a l f e e d b a c k
amplifier incorporated the
patented Class “J” circuitry
which allows the amplifier to
produce massive amounts of
power with minimal heat
production. This patented
c i r c u i t r y d e l i v e r s h i g h
efficiency well exceeding 97%
- typical Class AB amplifier
runs at about 40 to 50%.
The IQ amplifier offers a room correction technique
that surpasses all previous attempts. The intelligent
“Back EMF” drive circuit interacts with the subwoofer
and memorizes system tuning freq uencies 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 then resort to the
final correction: EQ the room. The IQ amplifier can
either cut or boost the 20Hz, 30Hz and 40Hz
frequencies by 6dB to produce a wider range of
listening position that is unprecedented for the room.
Note that boosting the response at 20Hz is very
demanding for most subwoofers. However, the
Supernova MKVI and MKVII series is designed to
take a boost at such low frequency.
Proprietary High Excursion Drivers
The drivers used in the
SuperNova are specifically
d e s i g n e d f o r a c c u r a t e
reproduction of bass and
sub-bass frequencies. With a
massive moving structure,
these drivers operated with
extremely low distortion and
i m p r e s s i v e t r a n s i e n t
response. Their performance is attributed to a non-
conventional motor structure design that integrates
components such as double stacked, high-gauge
magnets, epoxy coated super spiders, high
temperature copper voice coils and over 1” of single
layer, thermally pressed poly-ether foam surrounds.
SLAPS (Symetrically Loaded Audio
Passive System)
Earthquake’s own patented
SLAPS passive radiator
technology dramatically
increases the subwoofer’s
efficiency and capability for
u l t r a l o w f r e q u e n c y
reproduction. The unique
d e s i g n o f t h e S L A P S
employs dual (identical)
suspensions, allowing the passive driver to move the
same amount of air in either direction. Coupled with
the active driver, the SLAPS enables the woofer to
move more than 4” peak-to-peak and adds an excess
of 5dB at 15Hz, more than twice as loud at that
frequency.
What Makes a Supernova?
