SB-900 - Subwoofer ATLANTIC - Free user manual and instructions

Model	SB-900
Type	Powered Subwoofer
Bass Driver	8" long-throw
Output Power (RMS)	125W
Amplifier Distortion	<0.5%
Frequency Response	32Hz - 200Hz ±3 dB
Peak Output	103dB SPL into 2000 cubic feet
Dimensions (W x H x D)	11 x 13 x 13.125 in (275 x 330 x 333 mm)
Additional Height for Feet	1.75 in (45 mm)
Additional Depth for Knobs & Grille	1.5 in (38 mm)
Weight	28 lbs (12.7 kg)
Power Requirements	110-120/220-240V, 50/60Hz, 250W Max
Standby Mode	Automatic or always on (selectable)
Phase Switch	0° or 180° for acoustic matching
Bass Level Control	Adjustable bass level
Low-Pass Crossover Frequency	55Hz to 200Hz adjustable, 18dB/octave
Low-Pass Switch	Low-Pass or Bypass for pre-filtered signals
Audio Inputs	Low Level (RCA) and High Level (speaker wire)
Audio Outputs	High Level Output for main speakers
Voltage Selector Switch	115V or 230V
Enclosure Material	Medium Density Fiberboard (MDF)
Cleaning Instructions	Use a soft cloth, dry or slightly damp with water. Avoid wetting seams.
Safety Notices	Do not expose to rain or moisture. Do not block ventilation. No user-serviceable parts inside.

Frequently Asked Questions - SB-900 ATLANTIC

What is the recommended placement for the SB-900 subwoofer?

Generally, place the subwoofer in the front of the room near a corner for deeper bass. Experiment with placement to avoid a boomy effect. See the manual for typical arrangement.

How do I set the low-pass crossover on the SB-900?

Set the Low-Pass Switch to LOW-PASS and use the Low-Pass Control to adjust between 55Hz and 200Hz. If using a receiver with its own crossover, set the switch to BYPASS.

What does the phase switch do?

The Phase Switch (0° or 180°) helps match the subwoofer's output with your main speakers. Try both positions and use the one that gives the strongest bass response.

Why is my SB-900 not producing any sound?

Check that the power cord is plugged into a working outlet and the input cables are securely connected. Also ensure the Standby Switch is in the ON or AUTO position and the Status LED is green.

How do I connect the subwoofer to a receiver without a dedicated subwoofer output?

Use the High Level Input terminals. Connect your receiver's speaker outputs to the SB-900's High Level Input, then connect your main speakers to the High Level Output. Set the Low-Pass Switch to LOW-PASS and adjust the crossover.

Can I leave the subwoofer in standby mode?

Yes, set the Standby Switch to AUTO. The subwoofer will automatically turn on when it detects an audio signal and switch to standby after a period of inactivity. The Status LED will be green when on and red in standby.

What is the correct voltage setting for my SB-900?

Check the Voltage Select Switch on the back panel. For US/Canada, set to 115V. For other countries, set to 230V as needed. Ensure the switch matches your local mains voltage.

How do I clean the SB-900 cabinet?

Use a soft cloth, either dry or slightly dampened with clean water. Be careful not to wet the cabinet or allow water into seams. Avoid direct sunlight or heat sources.

What does the Status LED indicate?

Green LED means the subwoofer is on and receiving signal. Red LED means it is in standby mode. If it is off, check power connections.

Is the SB-900 subwoofer compatible with THX systems?

Yes, if you are using a pre-filtered THX signal, set the Low-Pass Switch to BYPASS. The subwoofer will then rely on the external crossover from your processor.

USER MANUAL SB-900 ATLANTIC

High Performance Powered Subwoofer

2

Safety Precautions

Model SB-900 Powered Subwoofer

Safety Precautions

CAUTION: To reduce the risk of electric shock, do not cover (or back). No user serviceable parts inside. Refer to qualified personnel.

WARNING: To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture. This device generates a fair amount of heat. Make sure nothing blocks the ventilation to the rear panel of the unit.

The lightning flash with arrowhead, with in an equilateral triangle, is intended to alert the user to the presence of uninsu lated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electrical shock to persons.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating maintenance (servicing) instructions in the literature accompanying the appliance.

Model SB-900 Specifications

Bass Driver 8" long-throw

Output Power 125W RMS

Distortion (amplifier) <0.5%

Frequency Response 32Hz - 200Hz ±3 dB

Peak Output 103dB SPL into 2000 cubic Feet

ove the

Dimensions (WxHxD) 11 x 13 x 13.125 in; 275 x 330 x 333mm

add 1.75" (45mm) H for feet

add 1.5" (38mm) D for knobs & grille

Weight

28lbs/12.7kg

Power Requirements

110-120/220-240V, 50/60Hz, 250W Max

For Future Reference

Record your serial numbers and date of purchase here:

Model Number

Serial Number

Date of Purchase

The serial number is found on the back panel.

Copyright © 2010 Atlantic Technology International.

Specifications are those in effect at the time of printing. Atlantic Technology reserves the right to change specifications or designs at any time without notice.

Instruction Manual

SB-900 Subwoofer Rear Panel

Figure 1

① Status LED

This will be green for "on" condition, red for "standby"

② Standby Switch

When in ON position, the amplifier will always be on. When in the AUTO position, the amplifier will be in Automatic Standby Mode.

③ Phase Switch

This switch allows precise acoustic matching with satellite speaker systems whose output may be phase reversed. Try in both the highest and lowest positions — use the position that results in the strongest bass output.

④ Bass Level Control

Use this control to set the level of bass desired

5 Low-Pass Control

An adjustable (55Hz to 200Hz) @ 18dB per octave low-pass crossover.

6 Low-Pass Switch

When in the LOW-PASS position, adjustment of the crossover can be made by the Crossover Control. If being fed a pre-filtered or THX signal, place the switch at the BYPASS position.

⑦ Low Level Input

Use the input to connect to the subwoofer or LFE line out from your processor/receiver.

⑧ High Level Output

Connect main Left/Right speakers here when using the High Level Input.

⑨ High Level Input

If your electronics do not have a line-level sub out, connect the Left-Right speaker terminals of your electronics to these connections. Set the SB-900's crossover to "Lowpass," and adjust accordingly.

10 AC Input

Use the included power cord to connect your amplifier to a wall outlet.

⑪ Voltage Select Switch

Voltage switch for use in different countries. This switch will be set when you receive the unit. Change this setting only when you are sure your application requires it. For US, the switch should be set to the 115V position.

12 Product Serial Number

Write this number in the space provided on page 2 for future reference.

Placement and Operation

Generally speaking, the best location for your new subwoofer is the front of the room, close to a corner (Figure 5). Every room has its own unique sound characteristics, and flexibility in the exact placement of the subwoofer is always desirable. The closer the subwoofer is placed a wall and especially a corner, the more and deeper the bass response you will hear. However, in some rooms, corner placement can produce a "one note" boomy effect. Under such circumstances the subwoofer may work better away from the corner. Experiment to find the best position in your room.

Figure 5
Typical arrangement for a single subwoofer in a home theater.

Using the Subwoofer Low-Pass Control

NOTE: Set this control to "Bypass" if you are using a receiver that has its own subwoofer crossover. Set this control to "LOW-PASS" if your electronics do not have a bass management function. The goal is to optimize the performance of the system by ensuring that the subwoofer and satellites

produce a cohesive and well integrated sound "picture."

Most surround sound receivers and processors offer a choice of cross-overs, typically between 60 Hz and 150 Hz. We recommend using a setting between 120Hz and 150Hz when using small speakers such as those in a soundbar. Consult your electronics owner's manual for more details.

It's generally undesirable to have the main speakers and the subwoofer overlap too much. Larger speakers means a lower Low-pass crossover frequency, smaller speakers means a higher Low-pass crossover frequency. Consult the manufacturer's specified low frequency response for your main speakers to determine the appropriate Low-pass setting on your subwoofer. In the end, however, a little time spent experimenting will generally result in dramatically better bass response.

Care of Your Subwoofer

Your subwoofer is constructed from Medium Density Fiberboard. MDF is a non-resonant material ideal for speaker system enclosures. To clean the cabinet you may use a soft cloth either dry or slightly dampened with clean water. Be careful not to wet the cabinet or allow any water to enter the cabinet seams. Avoid placing your speakers in direct sunlight or near a source of heat that may, over time, damage the finish.

Subwoofer Troubleshooting Guide

Once your subwoofer is set up, you should have many years of maintenance free enjoyment from your system. However, if you should encounter a problem, refer to the following guide to help you find the solution. If a problem persists, you should contact your local authorized Atlantic Technology dealer.

Problem	Possible Cause	Possible Solution
No bass output	AC power cord unplugged or plugged into a non-working outlet.	Plug into a working outlet.
	Input cables not securely connected or defective.	Check all connections, then try another input cable.
Audible buzz or hum	Input cable not securely connected or defective.	Check all connections, then try another input cable.
	Ground loop through antenna or cable TV system input.	Test by disconnecting antenna and/or cable system input leads. If hum goes away, install isolation balun(s) at that point.

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