EarthQuake XJ-700R User manual

Earthquake Europe
Mogensensvej 29, 5000 Odense C
Email: [e-mail]
Tlf.: [phone]
Website: www.earthquakesound.eu / www.earthquakesound.dk

Customer Support
[e-mail]
Tel:[phone]
Earthquake Europe
Mogensensvej 29
5000 Odense C
Tel:[phone]
Product Registration
This XJ-700R Power Amp can be registered by returning the Product Registration
card attached to this manual. Please also retain the sales receipt which represents
proof of purchase and helps expedite warranty issues.
© 2013 Earthquake Europe. All rights reserved.
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Introduction
The revolutionary aspect of Class J is its ability to combine ultra high efficiency of 99% with extraordinary bass control. Class J
is an evolution on PWM (Class D) technology that combines advanced multi-level digital feedback with an intelligent controller.
It modulates the supply voltage and output switching frequency in real time based on the frequency and amplitude content of
the input signal. This added level of intelligence offers several advantages such as increased thermal headroom, dramatically
improved bass response and dynamic power capabilities.
The patented Class J output stage ensures stellar audio quality and takes the
concept of the “intelligent circuit” a step further by actually adapting the electri-
cal operation of the output stage to the signal it is playing. This can rightly be
considered a quantum leap in amplifier technology.
Fig.1 Diagram of the Class J Principle
VE-TAT (Velocity Enhancing Transistor Augmentative Technology ) is an
enhanced transistor dead-time controller. Where Class J is an intelligence
infused output topology, VE-TAT works at the component level. A critical area
for efficiency in a PWM (switching output) amplifier is the speed and precision
by which the transistors can be opened and closed. VE-TAT dramatically
increases transistor velocity thus eliminating dead-time losses and increasing
efficiency.
Thank you for purchasing this XJ-700R LFE Mono Block Class J Amplifier. Designed to exceed all of your expectations for audio
amplification, the XJ-700R is a ruggedly constructed high quality profesional amplifier equally suited for home or professional
use. It is ideal for heavy duty sub-woofer application, powerhouse for multiple tactile transducers, and a variety of other home
and studio applications.
TheThe XJ-700R is a high power mono block subwoofer amplifier ideal for powering large subwoofers or tactile transducers.
Featuring advanced Class J output technology, VE-TAT acceleration and MARS protection - all in a cool running fan free 1U
package. Sporting 700/400 WRMS into 4/8 ohm, the XJ700R is ready to power your low frequency needs. The XJ-700R has
optimized presets for movie/ music listening, a digital volume readout with rotary dial and remote control.
Features include : variable low pass filter, phase inversion and precalculated boundary EQ.
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Overbuild power supply
The patented technologies combined with a dramatically oversized power supply make the XJ700R amplifier capable of
delivering raw quantities of continuous power. The power supply is based on a rigid silicon-steel, hard-wound Pancake low
regulation 1200VA toroidal transformer. The large and heavy transformer ensures a stable supply without voltage drop even at
severe and continuous operation.
MARS does not use any relays or other damping-factor reducing mechanical switches that can wear out or fail over time.
Instead, a specially designed circuit instantly shuts off the output drive.
In the event a short-circuit activates the MARS protection system, it continuously re-scans the output every 10 seconds. Normal
operation automatically resumes as soon as the short-circuit condition is removed.
MARS (Magnetically Actuated Reanimation System) is a new type of protection
system that enables the use of all amplifier power resources without
compromising the survivability of the amplifier under catastrophic conditions.
TTypical protection systems rely on fuses or relays that complicate the signal
path thus degrading audio quality. MARS is different as it is not in the signal
path, but works by sensing the electromagnetic field of the conducting wires.
The internal communication of MARS transmits in the optical plane with a
speed more than 1500 times that of the fastest signal passed through the
amplifier.
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Introduction
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Earthquake Sound Corporation , an engineering driven
company, lead for over 26 years the field of audio innova-
tions. A plethora of audio patents is proof that we con-
stantly stay at the cutting edge of technology.
Leading the way means that we can not take the “easy
route” of using off the shelf hybrid chips: generic “me too”
solutions or other compromises. We blazed the trail with
real innovations and real technology invented right here
in the USA, by hardworking and dedicated engineers.
I hope that you will enjoy this amplfier , we worked hard to
perfect it. We will value any feedback you might have on
its performance and design.
Thank you for choosing Earthquake.
From our hands to your ears...From our hands to your ears... Thank you.
First of all, thank you for purchasing this XJ-700R
subwoofer power amplifier.
Earthquake’s XJ-700R is a high power mono block
subwoofer amplifier suited for both professional and
home use, ideally for powering large subwoofers or tactile
transducers.
TheThe amazing force of the XJ-700R comes from its
advanced Class J output technology, VE-TAT
acceleration and MARS protection - all in a cool running
fan free 1U package. Sporting 700/400 WRMS into 4/8
ohm, the XJ-700R is ready to power your low frequency
needs.
TheThe XJ-700R has optimized presets for movie/ music
listening, a digital volume readout with rotary dial and
remote control. Other features include: variable low pass
filter, phase inversion and precalculated boundary EQ.
TheThe multi-patented “XJ” power amplifier series employs
some of the most advanced GREEN technologies ever
made, managing to deliver more sound while using less
power. Right off the get go, you can also see that the XJ
amplifiers are light, small and have no noisy fans.
It converts with record efficiency power from the “wall
outlet” to “music in your ears”.
It is simply put the perfect amplifieIt is simply put the perfect amplifier, whether you are an
advanced user or a novice in need of a compact but
efficient and powerful amplifier.
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Features & Specifications
1 x 1000 Watt IHF (4-Ohms Mono)
1 x 600 Watt IHF (8-Ohms Mono)
1 x 700 WRMS (4-Ohms Mono)
1 x 400 WRMS (8-Ohms Mono)
POWER OUTPUT
18Hz - 160Hz
FREQUENCY RESPONSE
<0.02%
TOTAL HARMONIC DISTORTION
50 volts / microsecond
SLEW RATE
>112dB (balanced) 108dB (unbalanced) @ rated power
SIGNAL TO NOISE RATIO
4 Ohms or greater
LOAD IMPEDANCE
>1500
DAMPING FACTOR
RCA
INPUT CONNECTIONS
Binding posts
OUTPUT CONNECTIONS
110 - 120 VAC ~/60Hz
220V-240v ~/50Hz
POWER REQUIREMENTS
H=1-3/4” / 44.45mm (2”/ 50mm including feet) x W= 17” / 432mm (19”/
483mm including ears) x D= 10-1/2” / 267mm (11-1/4” / 286mm including
speaker connection)
SIZE AND WEIGHT
1U
RACK MOUNT SPACE
-RCA Inputs
-Remote Control
-Boundary Equalizer
-Variable 24db low pass crossover 40-160HZ
-Auto-ON by signal sense function
-Black Finish
-Auxiliary IR control via 1/8” Mono mini-jack. -Auxiliary IR control via 1/8” Mono mini-jack.
(Allows the amplifier to be remote controlled even if it is placed in a different location.)
-Music or Movie preset mode
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c
If Problems Persist:
Contact Earthquake Sound Europe:
Phone: [phone]
Email: support@ earthquakesound.dk
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Earthquake Europe reserves the right to amend details of the specifications
without notice.
© Copyright Earthquake Europe
Mogensensvej 29, 5000 Odense C
Email: [e-mail]
Tlf.: [phone]
Website:www.earthquakesound.eu / www.earthquakesound.dk