Destination Audio SWA200 Manuale utente

SWA200

SUBWOOFER AMPLIFIER

I n s t a l l a t i o n & O p e r a t i o n M a n u a l

The following are descriptions of the front panel functions (refer to gure 1).

NOTE: When buttons are pushed in they are in the “on” position.

1. Power Button: This button allows the amplier to be turned on and off

manually or when kept in the “on” position and the Auto Button (see gure

1, #2) is kept in the “on” position; the amp will automatically turn on when

it detects an incoming audio signal. The power indicator light above the

power button will glow when the amplier is on.

IMPORTANT!Thevolumecontrolshouldbesetattheminimumsetting

(all the way counter-clockwise) before plugging the amplier into an

A/C wall outlet.

2. Auto Button: This button, when in the “on” position, allows the amplier

to automatically turn on when there is an incoming audio signal present

at either the “Line” inputs or “From Receiver/Speaker Level” inputs. For

this function to work properly, the Power Button must be left in the “on”

position. The light above the Auto Button will glow when the unit is in

“standby” mode. No other lights will glow.

3. Boost: This button, when in the “on” position, will increase output at 25Hz by

4dB. Use this button with discretion and caution as some subwoofers may

not be able to handle this extra boost.

4. Phase Control: This knob changes the output phase of the amplier.

Changing the phase will change the way the subwoofer(s) and main

speakers interact with each other at the crossover frequency. Typically,

this will be set to the 0° position. To operate, press then release the phase

button. While it is extended, adjust as necessary if any problem between

the subwoofer and main speakers exist. Press the button back in.

Introduction

Front Panel

Congratulations on your purchase of an Destination Audio SWA200 subwoofer

amplier! Your subwoofer amplier is the result of many years of research and

development dedicated to producing high quality products for home audio and

audio/video systems.

This manual contains features, setup recommendations and specications for

the Destination Audio SWA200 subwoofer amplier. It is recommended you

thoroughly read through the material contained in this manual before connect-

ing your subwoofer amplier. This will ensure you have a good understanding

of how to install your speaker for optimum performance; allowing for years of

listening enjoyment.

5. Crossover: This button allows the amplier’s internal low-pass lter to be

defeated when using an external crossover, or when the crossover is not

needed. When defeated (off), the subwoofer output will play the full-range

of the audio signal. This button has no effect on the high level inputs and

outputs shown in gure 2, #10 and #11. The high level output (gure 2,

#10) has a 100Hz high pass lter and is not adjustable or defeatable.

6. Crossover Frequency Control: The variable crossover frequency

control allows you to set the point of the low-pass frequencies being

reproduced by the amplier anywhere from 40Hz-180Hz. Try an initial

setting of the crossover frequency control at the midway (12 o’clock)

setting. Increasing the crossover frequency will produce more mid-bass

output from the amplier.

7. Master Volume Control: This dial allows you to adjust the output level

of the subwoofer to match the audio system. For an initial setting, turn the

volume control up one quarter of a turn (9 o’clock) position). The volume

control may be adjusted while listening to match the subwoofer output

level with the rest of the system.

REMINDER–The volume control should be at the minimum setting (all the way

counter-clockwise) before plugging the amplier into an A/C wall outlet.

Front Panel (continued)

Figure 1 Front Panel View

The following describes the control functions of the rear panel of the amplier

(refer to gure 2).

8. Line/LFE Input: These RCA type terminals are for the pre-amp

level input signals coming from a processor or preamplier labeled

“subwoofer” or “LFE.”

IMPORTANT!Use either theLineLevelinputsorthe “SpeakerLevel”

inputs separately. DO NOT use both, as damage to the receiver

and/or the Subwoofer Amplier may result.

WARNING! DO NOT connect an amplied or speaker-level signal

into the line/LFE input(s).

9. Line/LFE Output: These RCA type terminals carry the same audio signal

as the line inputs. These terminals are used if an output signal is needed

elsewhere in your system. These outputs are full-range outputs.

10. Speaker Level Output: This 100Hz high-pass speaker output is for your

satellite/main speakers. The built-in crossover limits the frequencies below

100Hz from being sent to your satellite/main speakers. You may use these

speaker outputs only when using the “Speaker Level” input terminals (#11).

Connect your satellite/main speakers (observing the proper polarity) to

the binding posts labeled “Speaker Level Out.”

NOTE: These connectors are not powered by the Subwoofer Amplier.

11. Speaker Level Input: These connectors are for the amplier or speaker-

level audio output from an amplier or receiver.

IMPORTANT!UseeithertheLineinputsorthe“SpeakerLevel”inputs

separately. DO NOT use both, as damage to the receiver and/or the

Subwoofer Amplier may result.

12. Subwoofer Output: This is the amplied audio output of the Subwoofer

Amplier. If the Crossover Button (#5) is in the “on” position, the audio output

will be limited to the lower frequencies selected by the Frequency Control

(#6). If the Crossover Button (#5) is in the “off” position, the audio output

will be full-range. An impedance load of 4-16 ohms may be connected to

this output. Please follow the instructions in the connections section of this

owner’s manual for proper wiring information.

13 Dimmer: This knob adjusts the brightness of the indicator lights on the

front panel.

Rear Panel

14. Fuse Access: This is the power fuse access.

WARNING!Intheeventthefusemustbereplaced,thereplacementfuse

mustmatchexactlytheoriginalfusevalue.Ifthereplacementfuseisnot

of the same value, damage to the Subwoofer Amplier may result.

CAUTION! Before replacing the fuse, disconnect the power cord from

the power receptacle.

15. Voltage SelectorSwitch: If your model features this capability, this switch

allows you to select between 110V A/C (60Hz) or 220V A/C (50Hz).

WARNING! If the voltage setting does not match the A/C power

supplied, damage to the Subwoofer Amplier may result.

16. PowerCordReceptacle:Thesuppliedpowercordneedstobeconnected

to this receptacle in order for the Subwoofer Amplier to work properly.

WARNING! Make certain that you are using the proper power cord

and voltage selection for the type of A/C power supplied.

Rear Panel (continued)

Figure 2 Rear Panel View

System One: Using line level inputs.

NOTE: Speaker-level inputs are not used in this system.

Connections

System Two: Using speaker level inputs.

NOTE: Line level inputs are not used in this system.

NOTE: This example is for speaker level input only. DO NOT connect the left

and right satellite speakers to the amplier if the line inputs are used.

Troubleshooting

Situation: Probable Cause: Solution:

No sound from the

subwoofer(s) Amplier is not connected to

constant A/C power outlet.

Subwoofer(s) is/are not

connected to the amplier

correctly

Amplier is not receiving an

audio signal for the

pre-amp/receiver

Electrical short in wiring

Amplier fuse might be blown

Make certain the amplier is

plugged into an unswitchable

A/C power outlet

Make certain that subwoofer(s)

is/are connected properly (refer

totheconnectionssectionof

this manual)

Maker certain there is an

audio signal from pre-

amp/receiver and audio

connections resemble those

in the connections section of

this manual.

Verify that all connections are

complete and secure, with no

stray wires contacting other

terminals.

Replace fuse (if fuse is not

readily accessible, consult

your authorized Destination

Audio dealer). WARNING:

Before replacing fuses,

please see the rear panel

features/controls section

(Figure 2, #14) of this

manual.

Sound from at least one

subwoofer, but not the

other(s)

Bad connection(s) to non-

working subwoofer(s)

Electrical short in wiring

If one subwoofer is damaged

due to being overdriven, then

it may have a negative effect

on another subwoofer used

in a series connection.

Verify all wires are properly

connected.

Verify that all connections

are complete and secure,

with no stray wires contacting

other terminals. If problem

is in wire itself, replace the

suspect wire.

Check each individual

subwoofer to verify each is

still operational

Troubleshooting(continued)

Situation: Probable Cause: Solution:

Performance is less than

expected The + and – polarity of the

subwoofer wire might be

reversed on the subwoofer

Crossover frequency is not

adjusted correctly

Crossover button is in the

wrong position

Check the entire system for

proper polarity

Adjust crossover frequency

by turning the Crossover

Frequency Control clockwise

until desired sound is

obtained

Check Crossover On/Off

button for correct setting

Specications

Model SWA200

Amplier Type: Discrete Class A/B

Recommended/Rated Power: 200 Watts (RMS @ 4 Ohms)

Maximum Power Consumption: 400 Watts

Distortion (THD): < .04% @ 1 Watt

S/N Ratio: >82dB (without lter)

Input Impedance: 47 KOhms (line level)

200 Ohms (speaker level)

Input Sensitivity: 80mV (line input)

280mV (speaker level)

Crossover Slope: 12dB/octave

Crossover Frequency Range: 40Hz–180Hz ±3dB (variable)

Auto Turn-on Sensitivity: 1.8mV

Turn-off Delay Time: 15-20 minutes

Frequency Response: 20Hz–20kHz ±3dB (crossover off)

15Hz–20kHz ±3dB (crossover on)

Boost: ±4dB @ 25Hz (when activated)

Damping Factor: >200

Chassis Color: Black

Cutout Dimensions: Rack Mount Holes (Center to Center)

Horizontal 18¾” (476mm)

Vertical 3” (76mm)

Dimensions: 17” W x 4” H x 13” D (w/o rack)

(450mm W x 101mm H x 355mm D)

19” W x 4” H x 14” D (with rack)

(482mm W x 101mm H x 355mm D)

Weight: 17 lbs. (7.71 Kg)

Safety Instructions

CAUTION! DO NOT open the amplier, attempt any modications or re-

pairs. There are extremely high voltages present and any servicing must

be referred to Destination Audio or an authorized qualied technician.

ATTENTION! Opening the amplier will void warranty.

WARNING! To prevent shock or re hazard, never permit moisture or any

liquid to get into the amplier. If an accidental spill occurs, immediately

shut off the power, unplug its A/C power cord and seek a qualied

technician for repair.

CAUTION! To reduce the risk of electric shock, do not remove the cover

(or back). No user serviceable parts inside: refer servicing to qualied

technician.

All safety instructions should be read before this amplier is operated. Please

retain these safety instructions for future reference. Adhere to all warnings on

the amplier and in this manual.

Ventilation: The amplier should be situated so that its location or position does

not interfere with its proper ventilation. The amplier should not be situated on

a bed, sofa, rug or similar surface that may block the ventilation openings, nor

should it be placed in a built-in installation such as a bookcase or cabinet that

may impede the ow of air through the ventilation openings.

Power Source: The amplier should only be connected to a power supply of

the type described in this instruction manual or as marked on the amplier.

Precautions should be taken so that the grounding or polarization means of the

amplier are not defeated.

PowerCords: Power supply cords should be routed so that they are not likely to

be walked on or pinched by items placed upon or against them, paying particular

attention to wall receptacles and the point where they exit from the amplier.

Object and Liquid Entry: The amplier should not be exposed to dripping or

splashing and objects lled with liquids, such as vases or plants, should not be

placed on top of or next to the amplier. Care should be taken so that objects

do not fall and liquids are not spilled into the enclosure through its ventilation

openings.

Damage Requiring Service: This amplier should be serviced by a qualied

technician when:

— The power supply cord has been damaged; or

— Objects have fallen or liquid has been spilled into the ampliﬁer; or

— The ampliﬁer does not appear to function normally or exhibits a

marked change in performance; or

— The ampliﬁer has been dropped or the enclosure is damaged.

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