EarthQuake SUB-80X Manuale utente

Sound That Will Move You

SUB-80X

150 Watt

Digital

Powered

Subwoofer

User's Manual

Earthquake Sound reserves the right to amend details of the specifications without notice.

Earthquake Sound Corporation • 2727 McCone Avenue Hayward CA, 94545

Phone: 510-732-1000 Fax: 510-732-1095

Congratulation on your choice of the SUB-80X self powered subwoofer system,

one of Earthquake's newest designs in bass reproduction units.

With an integral high-power amplifier - 150 Watts, the SUB-80X subwoofer

combines tight bass extension with high output levels. Acoustically, it is designed

to match typical satellite speaker systems to enhance the over all sound quality

and performance of your system.

Dear Valued Customer,

A) LINE IN RCA - Input jacks, accept up to 1.4 volts of audio input signal (mono

and stereo).

B) LIN OUT RCA- High pass filtered RCA output jacks with left and right line

output signals. The line out RCA's are not functional when the line in signal

(going into the subwoofer) is derived from a sub-filtered output of an external

processor.

C) XOVER FILTER - The 12dB/Octave variable crossover filter is designed to

control the subwoofer cut off frequency (range from: 40Hz to 130Hz).

D) VOLUME CONTROL - Manual adjustment of the sound level of the

subwoofer. Always start at MIN position and slowly increase the volume to reach

the desired subwoofer level.

E) PHASE SHIFT - 0 to 180 degrees subwoofer phase shift switch.

F) POWER SWITCH - For operating the amplifier automatic or manual power on.

In automatic mode, the SUB-80X will turn OFF in 15 minutes if no audio signal is

detected.

G), H) POWER INPUT - The SUB-80X operates in 115V and 230V environments.

A sliding switch located near the power plug allows for both operations.

I) HIGH LEVEL OUTPUT - High pass filtered output terminals designed to power

up stereo satellite speakers.

J) HIGH LEVEL INPUT - Clamp style input terminal, accepts high level audio

input from the main or front system speakers (up to 10 volts).

Key Connection and Controls:

PHASE

AUTO

POWER

HIGH LEVEL INPUT

VOLUME CROSSOVER

OFF ON

180

120Hz

80Hz

LEFT

FUSE: 115V, T2A/250V

FUSE: 230V, T1A/250V

LEFT RIGHT

RIGHT

HIGH LEVEL OUTPUT

P O W E R E D S U B W O O F E R

DIGITAL

P O W E R

SUB-80X

1 5 0 W A T T S

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".

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.

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.

Fine Tuning:

Original Input Signal

Smooth Transition Between

Lower and Upper Bass IDEAL

CROSSOVER SETTING

LOWER

BASS UPPER

BASS

Gapped Transition Between

Lower and Upper Bass OVER GAPPED

CROSSOVER SETTING

LOWER

BASS UPPER

BASS

Uneven & Gapped Transition

Between Lower and Upper Bass OVER GAPPED

CROSSOVER SETTING

LOWER BASS ENCROACHING

ON UPPER BASS

LOWER

BASS UPPER

BASS

CENTERED POSITION

(RECOMMENDED)

WIDE SCREEN /

FLAT PANEL RIGHT

FRONT

RIGHT

REAR

LEFT

REAR

LEFT

FRONT

SUB-80X

VIEWING POSITION

CORNER LOADING

(HIGHLY RECOMMENDED) WIDE SCREEN /

FLAT PANEL RIGHT

FRONT

RIGHT

REAR

LEFT

REAR

LEFT

FRONT

SUB-80X

VIEWING POSITION

VENTILATION DUCT

SUB-80X

BASEMENT LOADING

(STEALTH APPLICATION)

Listening Room & Subwoofer Position: Positioning Examples

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.

* If needed, connect the RCA line out (B) to another amplifier to drive satellite

speakers (front or rear). The RCAline out has high pass filtered signal at about

70Hz (5dB/Octave cut off).

* 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

* 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).

* 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.

* To prevent electrical shock, never open the subwoofer cabinet before

disconnecting the power cord from the amplifier's main socket.

* 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.

Cautions:

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

Features & Specifications:

Subwoofer

- 200 watts 8" subwoofer

- 1.5" high temperature voice coil

- Durable pressed paper cone

- Long Excursion santoprene surround

- 48oz high density magnet

- 89dB 1W/1M

- FS: 38Hz

- Qts: 0.516

System

- Dimensions HxWxD:

13-1/2" x 9-1/2" x 13-3/4"

- Weight: 18.7 lbs / 8.5Kg

For Technical Issues Please Contact Us VIA:

Phone: 1-800-576-7944

Email: [email protected]

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