Optoma NuForce STA120 User manual

NuForce

Optoma NuForce

STA120

STA120

Stereo Ampliier

Stereo Amplifier

User’s Manual
ALSTAGNZ

User’s Manual

NuForce STA120 Stereo Ampliier

FCC Notice - Declaration of Conformity Information

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 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, there is no 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
o and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit dierent from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

WARNING: Only peripherals complying with the FCC class B limits may be attached to this equipment.

Changes or modiications made to this equipment, not expressly approved by us or parties authorized by us
could void the user’s authority to operate the equipment. 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, including interference that may cause undesired operation.

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NuForce STA120 Stereo Ampliier

INTRODUCTION

NuForce developed the STA120 ampliier for the audio enthusiast as an audiophile-grade stereo power amp
housed in an elegant, modestly sized enclosure. Oering quality parts throughout and advanced, high-eiciency
switching ampliier operation, the STA120 delivers genuine NuForce performance and value.

The STA120’s size belies its power: a robust 160 Watts into 4Ohms per channel. Sharing technology with
NuForce’s award-winning V3 mono ampliiers, mere power alone doesn’t tell the whole story. The STA120 renders
all of your recordings with thundering lows, crystalline highs, and a warm, tube-like midrange - all in perfect
balance with exquisite resolution and eortless, fatigue-free sound.

Proprietary feedback circuitry operates as the cornerstone of the STA120’s sound quality. A self-resonant design,
the 400 kHz PWM switching frequency constantly adjusts to the input signal, output current demands, and
loudspeaker impedance variations. Incredible speed and accuracy ensure that the most explosive dynamics and
the minutest of details convey the kind of life-like sound upon which NuForce’s reputation rests.

To be sure, the STA120 is destined to ind its place as the driving force in a great many music and A/V systems.
When it comes to mating with décor and today’s home audio components, the STA120’s power, transparency,
modest size and sophisticated appearance defy competition at its modest price point. Where sound and style
matter, nothing less will do.

Innovative Features

• High Power - 1% 125WX2@4Ω / 10% 140WX2@4Ω

• Modest size and modern, elegant construction

• Proprietary high-speed, negative feedback design

• Very high eiciency PWM circuit topology

• Available in stylish Silver or Black inish

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QUICK START GUIDE

Product Overview

Front Panel

Back Panel

NuForce STA120 Stereo Ampliier

AC 100(115)V / 230(240)V

FUSE T2.5A 250V

SPEAKER

R

SPEAKER

L

L

R

• Power On: Switch on the power from the rear ac switch

• Power O: Switch o the power from the rear ac switch

Connections

• Input: RCA

• Speaker Output: Connect the left and right speaker cables to the output terminals. In order to avoid shorting

out the STA120, before turning on the power, please make sure that the polarity of the speaker cables is
properly terminated to the loudspeakers and the STA120. Please make sure the unit is o before connecting
your speakers.

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SPECIFICATIONS

Input RCA

Output Five-way binding posts

Power output 1% 125WX2@4Ω

10% 140WX2@4Ω

Peak power output 300W

Gain 25.5 dB

Input impedance 22k ohm

Sensitivity 1Vrms

THD+N 0.008%

Frequency response 10 Hz - 40kHz

SNR 115 dB

NuForce STA120 Stereo Ampliier

Dimensions 9” x 8.5” x 2”

Weight 2.64 lb. Shipping weight 5 lbs.

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