Altec Lansing 251 manual Headphones, Powering on, Troubleshooting Tips, System Specifications

HEADPHONES

To use headphones with the system, plug them into the labeled jack on the front of the right satellite. When headphones are connected, all satellites and the subwoofer are muted.

POWERING ON

1.After all other connections are made, plug the power cord (on the back of subwoofer) into an AC wall socket. The speaker system is now ready to operate.

2.Turn on the audio source.

3.Turn on the Altec Lansing 251 speaker system by pushing the On/Off button located on the front of the right satellite. A green LED will light next to the button when the power is ON.

NOTE: Consumers who purchased a 220V or 230V unit, need to ensure that the power switch, located on the rear of the subwoofer, is in the ON position.

If the power switch on the rear of the subwoofer is in the OFF position, the entire unit is shut off.

MASTER VOLUME

The volume knob on the front of the right satellite is the master volume control for the speaker system. Turn the knob clockwise to increase the volume and counter-clockwise to decrease the volume.

SURROUND VOLUME CONTROL

The SURROUND control varies the volume of the left and right surround speakers. Adjust this control as necessary to create the optimum sound.The Surround Volume Control operates in the same manner even on computers that only have stereo outputs.

CENTER VOLUME CONTROL

The CENTER control varies the volume of the center speaker. Adjust this speaker as necessary to achieve a balanced sound.

SUBWOOFER LEVEL

The Subwoofer Level is located on the back of the subwoofer. Rotating this control clockwise increases the bass while rotating the control counter-clockwise decreases the bass. Blend the subwoofer output with that of the satellites to set the correct volume.

TROUBLESHOOTING TIPS

SYMPTOM	POSSIBLE PROBLEM	SOLUTION
No LEDs are lit.	Power is not turned on.	Press Power button on the front of the right satellite.
	AC cord is not connected to wall outlet.	Check to see if the “Power On” LED is illuminated on the rear of the
		subwoofer. If not, connect AC power.
	Surge suppressor (if used) is not powered on.	If the subwoofer’s AC power cord is plugged into a surge protector, make sure
		the surge protector is switched on.
	Wall outlet not functioning.	Plug another device into the wall outlet (same jack) to verify the outlet is working.
No sound from	Power isn’t turned on.	Verify the subwoofer’s AC power cord is plugged into the wall outlet.
one or more
speakers.		Verify the Power button has been pressed and the green LED is illuminated.
	Volume setting is too low.	Turn the volume knob clockwise to raise the volume.
		Check volume level on the computer sound card or alternate audio source
		device, and set at mid-level.
	Audio cable isn’t connected to audio source.	Check plug connections on both the subwoofer and source. Make sure the
		signal cables are inserted firmly into the correct jacks.
	Audio cable is connected to wrong output on audio source.	Make sure the green 3.5 mm stereo cable is connected and fully inserted into
		the “line-out” jack of the audio source.

SYSTEM SPECIFICATIONS

Total System Power:	90 Watts (45 Watts RMS)	SUBWOOFER
Frequency Response:	35 Hz - 18 kHz	Speaker Drivers: One 5.25 " long-throw woofer
Signal to Noise Ratio @ 1 kHz input:	> 70 dB
		POWER REQUIREMENTS
Crossover Frequency:	150 Hz
		USA/Canada/and applicable	120 V AC @ 60 Hz
System THD (distortion):	< 0.50 % THD @ -10 dB full-
	scale input voltage	Latin American countries:
Input Impedance:	10k ohms
		Europe/United Kingdom;	230 V AC @ 50 Hz
SATELLITE AMPLIFIED SPEAKERS
		applicable Asian countries;
Drivers (per satellite): One 3" full-range driver		Argentina, Chile and Uruguay:
		ETL / cETL / CE / NOM / IRAM Approved

TROUBLESHOOTING TIPS

The answers to most setup and performance questions can be found in the Troubleshooting guide. You can also consult the FAQs in the customer support section of our Web site at www.alteclansing.com. If you still can’t find the information you need, please call our customer service team for assistance before returning the speakers to your retailer under their return policy.

Customer service is available 7 days a week for your convenience. Our business hours are:

Monday to Friday: 8:00 a.m. to 12:00 midnight EST

Saturday & Sunday: 9:00 a.m. to 5:00 p.m. EST

1-800-ALTEC-88 (1-800-258-3288) Email: csupport@alteclansing.com

For the most up-to-date information, be sure to check our Web site at

www.alteclansing.com.

© 2002 Altec Lansing Technologies, Inc.

Designed and engineered in the USA and manufactured in our ISO9002 certified factory. United States Patents 4429181 and 4625328 plus other patents pending.

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	Problem with audio source device.	Test the speakers on another audio device. Remove the green audio cable
		from the audio source device and connect it to the “line-out” or headphone
		jack of another audio source.
No sound from	Switch on the rear of the subwoofer is not in the	Change the position of the switch.
center or rear	proper position.
satellites.
	Rear or center level is set too low.	Increase the rear or center speaker volume level.
Crackling sound	Bad connection.	Check all cables. Make sure they are connected to “line-out” or “audio-out” jack on
from speakers.		your sound card or other audio source– NOT “speaker-out.”
	Volume control in Windows is set too high.	Check the Windows volume control and decrease if necessary.
	A problem with your audio source device.	Unplug the stereo cable from the audio source. Then plug it into the headphone
		jack of an alternate audio source (e.g., Walkman, Discman or FM radio).
Sound is	Volume level set too high.	Decrease master volume level.
distorted.
	Windows volume control is set too high.	Adjust the Windows volume and balance controls to the center as a starting point,
		then adjust the level on the speaker using the volume control.
	Sound source is distorted.	.WAV files are often of poor quality. So distortion and noise are easily noticed
		with high-powered speakers. Try a different sound source such as a music CD.
Radio	Too close to a radio tower.	Move your speakers to see if the interference goes away. If not, you may be
interference.		able to purchase a shielded stereo cable from your local electronics store.
No sound from	Subwoofer volume set too low.	Adjust the bass level on the rear of the subwoofer.
subwoofer.
	Sound source has little low-frequency content.	Many .WAV and .MID files often have little low-frequency content and sound
		flat when you listen to them on a computer. Try a song with more bass–
		something from your CD collection.
Low hum from	The AC in your house is at 60 cycles per second, which is	Some low hum may be detected when your speaker system is powered on without
subwoofer.	within the audio frequency of the subwoofer.	an audio source playing, or when the volume is set at an extremely low level.
Loud hum from	Bad connection.	Unplug the power cord from the surge protector (if used), and plug directly
subwoofer.		into an AC wall outlet.
		Move your cables. Check to ensure they are making a clear connection.
	Volume on your audio source device set too high.	Disconnect your green stereo cable from the audio source. If the loud hum
		goes away, lower the volume on the audio source.
		Lower the master volume or bass level on your computer, portable device, etc.
Not enough bass	Bass setting is too low.	Adjust the bass level on the subwoofer.
from subwoofer.
	Bad connection.	Check to make sure that all cables are connected properly and are making a
		clear connection.
Too much bass	Bass setting is too high.	Decrease the bass level on the subwoofer.
from subwoofer.
Distorted	Subwoofer too close to monitor.	Because the subwoofer is not magnetically shielded, it can cause distortion if it’s too
monitor.		close to your monitor. Move the subwoofer so it’s at least 2 feet from your monitor.

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