Earthquake Sound Speaker SUB 80X User Manual

Sound That Will Move You  
SUB-80X  
150 Watt  
Digital  
Powered  
Subwoofer  
Sound That Will Move You  
Earthquake Sound reserves the right to amend details of the specifications without notice.  
Copyright © Earthquake Sound Corporation  
User's Manual  
Earthquake Sound Corporation • 2727 McCone Avenue Hayward CA, 94545  
Phone: 510-732-1000 Fax: 510-732-1095  
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Listening Room & Subwoofer Position:  
Positioning Examples  
Subwoofer positioning is integral to the successful application of any surround  
sound system. It is very important to keep in mind that the proximity of the  
subwoofer to a wall or a corner contributes to an increase in efficiency (SPL)  
because of the "mirror effect" also referred to as "corner loading".  
CORNER LOADING  
(HIGHLY RECOMMENDED)  
WIDE SCREEN /  
FLAT PANEL  
SUB-80X  
LEFT  
FRONT  
RIGHT  
FRONT  
It is therefore advisable that you place the SUB-80X near a wall, or preferable in  
the corner of the room. That will increase the subwoofer effect by 2 to 3 decibels,  
without raising the volume control of the SUB-80X.  
Fine Tuning:  
The fine tuning process includes creating a smooth transition of music between  
the subwoofer and the next speaker up: usually a woofer or a mid-range. As  
shown in the graph below; a smooth transition between lower and upper bass is  
directly relative to the crossover setting and the capability of the next woofer up  
to reproduce lower frequencies. Keep in mind that vocals extend down to 70Hz,  
adjust your SUB-80X accordingly.  
VIEWING POSITION  
LEFT  
REAR  
RIGHT  
REAR  
CENTERED POSITION  
(RECOMMENDED)  
Original Input Signal  
SUB-80X  
WIDE SCREEN /  
FLAT PANEL  
LEFT  
FRONT  
RIGHT  
FRONT  
Smooth Transition Between  
Lower and Upper Bass  
IDEAL  
CROSSOVER SETTING  
LOWER UPPER  
BASS  
BASS  
VIEWING POSITION  
Gapped Transition Between  
Lower and Upper Bass  
LEFT  
REAR  
RIGHT  
REAR  
OVER GAPPED  
CROSSOVER SETTING  
LOWER  
BASS  
UPPER  
BASS  
BASEMENT LOADING  
(STEALTH APPLICATION)  
VENTILATION DUCT  
Uneven & Gapped Transition  
Between Lower and Upper Bass  
OVER GAPPED  
CROSSOVER SETTING  
LOWER BASS ENCROACHING  
ON UPPER BASS  
SUB-80X  
LOWER  
BASS  
UPPER  
BASS  
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Features & Specifications:  
Amplifier  
- Power Output: 150 Watts  
- Frequency Response: 23Hz - 180Hz  
- Crossover Frequency: 40Hz - 130Hz  
- Crossover Slope: 12dB per Octave  
- Typical THD: 0.09%  
- Input Impedance: 47,000 ohms  
- Input Sensitivity: 50mV to 2.3V  
- Power Supply: 115V/230V (50Hz~60Hz)  
- Fuse Rating: 1 amp  
Operating & Controlling Your SUB-80X  
* Secure all connection before powering up/plugging in the AC cord into the  
subwoofer.  
* Connect the input signal to either the RCA lin in (A) or the High Level input  
terminal (F); these two input devices can not be used simultaneously, choose the  
one that best matches the output of your existing audio system.  
Subwoofer  
- 200 watts 8" subwoofer  
* If needed, connect the RCA line out (B) to another amplifier to drive satellite  
speakers (front or rear). The RCA line out has high pass filtered signal at about  
70Hz (5dB/Octave cut off).  
- 1.5" high temperature voice coil  
- Durable pressed paper cone  
- Long Excursion santoprene surround  
- 48oz high density magnet  
- 89dB 1W/1M  
* The High Level input (I) for satellite speakers is fitted with a High Pass filter  
(70Hz). It is only powered when the main or front speaker signals are driven into  
the High Level input (J). These terminals are marked with red and black to  
indicate the (+) & (-) respectively.  
* Adjust the subwoofer low pass filter cut off to near 100Hz at first, slowly bring  
down the crossing point until you eliminate any vocals from emanating from the  
subwoofer. An ideal crossing pint range from 55 to 70Hz  
- FS: 38Hz  
* In case the SUB-80X becomes out of phase with the satellite speaker, flip the  
phase switch to correct the problem (maximum bass is only achieved when the  
sub is in phase with rest of your speakers).  
- Qts: 0.516  
System  
- Dimensions HxWxD:  
13-1/2" x 9-1/2" x 13-3/4"  
Cautions:  
* Do not place the subwoofer in an environment exposed to dust, excessive  
moisture or heat. Direct exposure to sun light will over time deteriorate the  
enclosure finish and may cause the amplifier to overheat.  
- Weight: 18.7 lbs / 8.5Kg  
* To prevent electrical shock, never open the subwoofer cabinet before  
disconnecting the power cord from the amplifier's main socket.  
For Technical Issues Please Contact Us VIA:  
Phone: 1-800-576-7944  
* In the event of a blown fuse, replace it with a 1 ampere fuse only. Over fusing  
voids the warranty and will destroy the amplifier.  
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