Earthquake Sound IQ1500 Manuale Utente

The IQ1500 is capable of generating high sound
pressure levels. You should exercise caution when
operating this amplifier system. Long term

exposures  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 IQ1500 , and urges users to
play the IQ1500 at moderate listening levels.

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.

97
100
102
105
110
115

3
2
1 - 1 1/2

1
1/2
1/4 or less

SOUND LEVEL

DBA

90
92
95

8
6
4

DURATION

IN HOURS

Congratulations and thank you for choosing the new Earthquake
Subwoofer Power Amplifier as a key component for your audiophile system.
The

amplifier is 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 amplifier meets and exceeds all industry
standards. The new

amplifiers include many unique technologies that

allow it to deliver “World Class” performance, even under extreme operating
conditions.

The

is a ruggedly constructed high quality professional amplifier. The

Digital feedback class “J” Circuitry, allows the 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%.

IQ1500

The

offers a room correction technique that surpasses that of all

previous attempts. The intelligent “Back EMF” drive circuit interacts with the
subwoofer design and memorizes system tuning frequencies and 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

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.

(Note: boosting the response at 20Hz is very demanding for your subwoofer.
Consult with your subwoofer maker, and determine if their subwoofer is
designed to take a boost at such low frequencies.)

Introduction

CAUTION:

Specifications Are Subject To Change Without Notice

IQ Subwoofer Power Amplifier