Creative Labs 250D User Manual
MegaWorks THX 2.1 250D has moderately high input sensitivity, so it may amplify the hum and hiss inherent in some
audio program sources. Any noise is not due to a fault in the speaker system.
audio program sources. Any noise is not due to a fault in the speaker system.
You can minimize background noise as follows:
- Use the MegaWorks THX 2.1 250D remote control as your master volume control.
- If your speaker system is connected to a computer, adjust the settings of your computer’s sound control software. (If
- Use the MegaWorks THX 2.1 250D remote control as your master volume control.
- If your speaker system is connected to a computer, adjust the settings of your computer’s sound control software. (If
you are using Creative Sound Blaster software, this would be the Surround Mixer application). Turn off any input
controls that you do not need, such as Microphone, and set the remaining input controls to about 70% of their
maximum volume.
controls that you do not need, such as Microphone, and set the remaining input controls to about 70% of their
maximum volume.
- Adjust the master output volume of your sound control software, such that your speaker system reaches a
comfortably loud volume in its default volume settings.
MegaWorks THX 2.1 250D features high performance true 24-bit Digital-to-Analog Convertors and supports sampling
frequencies from 44.1 kHz to 96 kHz, via an RCA SPDIF digital connection.
frequencies from 44.1 kHz to 96 kHz, via an RCA SPDIF digital connection.
The lightning flash arrowhead within an equilateral triangle is intended to alert the user to the presence of non
insulated, 'dangerous voltage' within the product’s enclosure, that may be of sufficient magnitude to constitute risk of
electric shock to persons.
insulated, 'dangerous voltage' within the product’s enclosure, that may be of sufficient magnitude to constitute risk of
electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating
and maintenance (servicing) instructions in the literature accompanying this product.
and maintenance (servicing) instructions in the literature accompanying this product.
WARNING
DO NOT OPEN
TO PREVENT THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE SPEAKER COVERS (OR BACKS). NO USER-
SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
CAUTION:
TO PREVENT THE RISK OF ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SLOT. INSERT
CAREFULLY.
CAREFULLY.
CAUTION:
This symbol indicates that the marked item may be Hot and should not be touched without proper care.
- To minimize the risk of burns and other injuries to children, position the device such that hot surfaces are out of their
reach.
- To minimize the risk of fire, keep flammable materials like paper and cloth (for example, curtains) away from the hot
surface.
WARNING:
Do not expose your speakers to dripping or splashing fluids, and ensure that no objects filled with liquids - such as
vases - are placed on the speakers.
vases - are placed on the speakers.
CAUTION:
For continued protection against risk of fire replace only with same type T5AL 250V fuse.
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The following sections contain notices for various countries:
NOTICE FOR THE USA
FCC Part 15: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, this notice is not a guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the distance between the equipment and receiver.
• Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/ TV technician.
FCC Part 15: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, this notice is not a guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the distance between the equipment and receiver.
• Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/ TV technician.
CAUTION: To comply with the limits for the Class B digital device, pursuant to Part 15 of the FCC Rules, this device
must be installed with computer equipment certified to comply with the Class B limits.
All cables used to connect the computer and peripherals must be shielded and grounded. Operation with non-
certified computers or non-shielded cables may result in interference to radio or television reception.
must be installed with computer equipment certified to comply with the Class B limits.
All cables used to connect the computer and peripherals must be shielded and grounded. Operation with non-
certified computers or non-shielded cables may result in interference to radio or television reception.
Modifications
Any changes or modifications not expressly approved by the grantee of this device could void the user’s authority to
operate the device.
Any changes or modifications not expressly approved by the grantee of this device could void the user’s authority to
operate the device.
NOTICE FOR CANADA
This apparatus complies with the Class B limits for radio interference as specified in the Canadian Department of
Communications Radio Interference Regulations.
Cet appareil est conforme aux normes de CLASSE “B” d’interférence radio tel que spécifié par le Ministère
Canadien des Communications dans les règlements d’interférence radio.
This apparatus complies with the Class B limits for radio interference as specified in the Canadian Department of
Communications Radio Interference Regulations.
Cet appareil est conforme aux normes de CLASSE “B” d’interférence radio tel que spécifié par le Ministère
Canadien des Communications dans les règlements d’interférence radio.
Important Notice
The serial number for the MegaWorks THX 2.1 250D is located on the subwoofer. Please write this number down
and keep it in a secure area. This is for your security.
The serial number for the MegaWorks THX 2.1 250D is located on the subwoofer. Please write this number down
and keep it in a secure area. This is for your security.
CAUTION
Take care to prevent accidental operation of your new loudspeaker system at excessive sound pressure levels!
In a typical personal computer installation, the MegaWorks THX 2.1 250D satellite speakers are less than a meter
from the listener.
If you do not hear sound from your new speaker, keep the MegaWorks THX 2.1 250D's volume control at a low
level (two Level Indicators lit on the wired remote control) while trying to restore sound to your system. This will
prevent accidental operation at uncomfortably loud levels.
Take care to prevent accidental operation of your new loudspeaker system at excessive sound pressure levels!
In a typical personal computer installation, the MegaWorks THX 2.1 250D satellite speakers are less than a meter
from the listener.
If you do not hear sound from your new speaker, keep the MegaWorks THX 2.1 250D's volume control at a low
level (two Level Indicators lit on the wired remote control) while trying to restore sound to your system. This will
prevent accidental operation at uncomfortably loud levels.
Compliance
This product conforms to the following Council Directive:
Directive 89/ 336/ EEC, 92/ 31/ EEC (EMC), 73/ 23/ EEC (LVD)
This product conforms to the following Council Directive:
Directive 89/ 336/ EEC, 92/ 31/ EEC (EMC), 73/ 23/ EEC (LVD)
Safety & Regulatory Information
This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received,
Operation is subject to the following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received,
including interference that may cause undesirable
operation.
operation.
Ce matériel est conforme à la section 15 des régles
FCC. Son Fonctionnement est soumis aux deux
conditions suivantes:
1. Le matériel ne peut étre source D’interférences et
2. Doit accepter toutes les interférences reques, Y
FCC. Son Fonctionnement est soumis aux deux
conditions suivantes:
1. Le matériel ne peut étre source D’interférences et
2. Doit accepter toutes les interférences reques, Y
compris celles pouvant provoquer un fonctionnement
indésirable.
indésirable.
Compliance Manager
Creative Labs, Inc.
September 11, 2002
Declaration of Conformity
According to the FCC96 208 and ET95-19,
Manufacturer/Importer’s Name: Creative Labs, Inc.
Manufacturer/Importer’s Address:
Manufacturer/Importer’s Name: Creative Labs, Inc.
Manufacturer/Importer’s Address:
1901 McCarthy Boulevard
Milpitas, CA. 95035
United States
Tel: (408) 428-6600
Milpitas, CA. 95035
United States
Tel: (408) 428-6600
declares under its sole responsibility that the product
Trade Name: Creative Labs
Model Numbers: MMS0650
has been tested according to the FCC / CISPR22/85
requirement for Class B devices and found compliant
with the following standards:
EMI/EMC: ANSI C63.4 1992, FCC Part 15 Subpart B
Complies with Canadian ICES-003 Class B.
has been tested according to the FCC / CISPR22/85
requirement for Class B devices and found compliant
with the following standards:
EMI/EMC: ANSI C63.4 1992, FCC Part 15 Subpart B
Complies with Canadian ICES-003 Class B.
Turning the system On/Off
- Ensure that the subwoofer’s main power switch is On.
- Press the STANDBY/ POWER Button once. The red indicator above the button shuts off. The MASTER Volume Mode
- Press the STANDBY/ POWER Button once. The red indicator above the button shuts off. The MASTER Volume Mode
Indicator lights up.
- To switch the system to Standby Mode, press the STANDBY/ POWER Button again.
Notes
• On first power-on, the system uses a preset default master volume level: two volume Level Indicators will be lit.
• On subsequent power-on, the system reinstates the last-used master volume level.
• All volume and Sub/ Treble settings will be lost if you turn off the main power switch, or remove the AC power cord or
• On first power-on, the system uses a preset default master volume level: two volume Level Indicators will be lit.
• On subsequent power-on, the system reinstates the last-used master volume level.
• All volume and Sub/ Treble settings will be lost if you turn off the main power switch, or remove the AC power cord or
wired remote, or if there is a power interruption. The system will revert to default master volume and Sub/ Treble
levels.
levels.
Varying/ muting the volume
- If the MASTER Volume Mode Indicator is lit, press or to vary the system volume.
- If the MASTER Volume Mode Indicator is not lit, press the Mode Select Button until the MASTER Volume Mode
- If the MASTER Volume Mode Indicator is not lit, press the Mode Select Button until the MASTER Volume Mode
Indicator is lit. Then press or .
- To increase the rate of adjustment, hold down or .
Notes
• The remote will revert to MASTER Volume Mode if left idle for some time.
• To mute the MASTER volume, press the MUTE Button once. The system volume will be muted. All previously-lit
• The remote will revert to MASTER Volume Mode if left idle for some time.
• To mute the MASTER volume, press the MUTE Button once. The system volume will be muted. All previously-lit
Level Indicators will blink during the muting.
• To return to listening, press the MUTE Button again. Or press or to return to normal listening.
• For your own safety, reduce the master volume level before switching
• For your own safety, reduce the master volume level before switching
the system to Standby Mode.
Adjusting Sub/ Treble levels
- Press the Mode Select Button until the SUB or TREBLE Mode Indicator is lit.
- To increase or reduce the Sub/ Treble level, press or .
- To increase the rate of adjustment, hold down or .
- Press the Mode Select Button until the SUB or TREBLE Mode Indicator is lit.
- To increase or reduce the Sub/ Treble level, press or .
- To increase the rate of adjustment, hold down or .
Notes
• On first power-on, default Sub/ Treble levels (flat response) are applied. Three Level Indicators will be lit to reflect
• On first power-on, default Sub/ Treble levels (flat response) are applied. Three Level Indicators will be lit to reflect
this. Pressing boosts the level, and causes more Level Indicators to be lit. Pressing reduces the level, and
causes fewer Level Indicators to be lit.
causes fewer Level Indicators to be lit.
• Subsequent Sub/ Treble settings will be stored during Standby Mode, and recalled when you next turn the system
on using the remote.
Using Headphones
- For private listening, you can connect headphones to the Headphones Output of the wired remote. This will mute all
- For private listening, you can connect headphones to the Headphones Output of the wired remote. This will mute all
speakers.
- Adjust the headphones volume as you would for the speakers.
- The SUB Mode can be used to adjust the bass level you hear from the headphones.
- The SUB Mode can be used to adjust the bass level you hear from the headphones.
Notes
• Treble settings can be adjusted in the same way as for the speakers.
• When you disconnect the headphones, the system will revert to a preset default master volume setting (two Level
• Treble settings can be adjusted in the same way as for the speakers.
• When you disconnect the headphones, the system will revert to a preset default master volume setting (two Level
Indicators lit), in order to prevent high headphones volume levels from being applied to the speaker system.
Standby / Power
Indicator And Button
Indicator And Button
Master Volume Mode
Indicator
Indicator
Subwoofer Mode
Indicator
Indicator
Treble Mode
Indicator
Indicator
Up / Down Level
Adjustment Button
Adjustment Button
Select Button
Headphones Output
Mute Button
Level Indicators
Remote Control
About the built-in Digital-to-Analog Convertors
Using the Wired Remote Control
Controlling Noise and Distortion
General Specifications
Total System Burst power:
300 W
Total System Burst power:
300 W
Frequency Response:
25 Hz ~ 20 kHz
25 Hz ~ 20 kHz
Signal-to-Noise Ratio (SNR):
99 dB
99 dB
Input Voltage
For USA:
120Vac 60 Hz 5A
For USA:
120Vac 60 Hz 5A
Magnetic Shielding
All satellite speakers are shielded to allow placement close to display devices that are sensitive to magnetic fields.
All satellite speakers are shielded to allow placement close to display devices that are sensitive to magnetic fields.
Specifications
Safety Warnings
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