Altec Lansing 3151, User Manual

3

Sound Pressure Level (SPL):

103 dB

Total Continuous Power:

50 Watts RMS 

• Front Speakers:

5 Watts/channel @ 8 ohms 
@ 10% THD @ 150 Hz – 20 kHz 
2 Channels Loaded 

• Rear Speakers:

5 Watts/channel @ 8 ohms 
@ 10% THD @ 150 Hz – 20 kHz 
2 Channels Loaded  

• Center Speaker:

10 Watts @ 8 ohms 
@ 10% THD @ 150 Hz – 20 kHz 
Single Channel Loaded

• Subwoofer:

20 Watts @ 8 ohms 
@ 10% THD @ 40 – 150 Hz 
Single Channel Loaded

System Response:

40 Hz – 20 kHz (-10 dB) 

Signal to Noise Ratio 
@ 1 kHz input:

> 80 dB

Drivers (per satellite):

One 2" full-range driver

Subwoofer: 

One 5.25" woofer

POWER REQUIREMENTS

USA, Canada and applicable
Latin American countries:

120 V AC @ 60 Hz

Europe, United Kingdom,
applicable Asian countries,
Argentina, Chile and Uruguay:

230 V AC @ 50 Hz

ETL/cETL/CE/NOM Approved

System Specifications*

No LEDs are lit.

Power isn’t turned on.

AC power cord isn’t connected to the wall outlet.

Surge protector (if used) isn’t powered on.

Wall outlet not functioning.

Turn on the speaker system by pushing the On/Off button located on the
control pod. An LED will light on the control pod when the power is ON.

Check to see if the “Power On” LED is illuminated on the control pod. If not,
connect AC power.

If the AC power cord is plugged into a surge protector, make sure the surge
protector is switched on.

Plug another device into the wall outlet (same jack) to verify the wall outlet is
working.

Troubleshooting

Symptom

Possible Problem

Solution

Altec Lansing’s superior sound comes from our patented Dynamic EQ technology,
which utilizes custom-built, high-fidelity drivers, state-of-the-art equalization circuitry,
and a harmonious mix of the following specifications:

*Power rating conforms to FTC Amplifier Rule #16 C.F.R. Part 432.

Surround Volume 

The SURROUND knob on the control pod controls 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 

The CENTER knob on the control pod controls the volume of the center
speaker. Adjust this knob as necessary to achieve a balanced sound. 

Subwoofer Volume

The SUBWOOFER knob on the control pod controls the volume of the
subwoofer. Turn the knob clockwise to increase the subwoofer volume and
counterclockwise to decrease the subwoofer volume.

Headphones

To use headphones with the system, plug them into the labeled        jack 
on the control pod. When headphones are connected, the speaker system 
is muted.