World 2.1

World 2.1 Front
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World 2.1 Description

The Stewart Audio World 2.1 Professional Power Amplifier is designed specifically for the unique requirements of high quality commercial, industrial and Pro Audio sound installations. The World 2.1 was specifically designed to meet the rigorous requirements of exceptional Sonic Accuracy, High Efficiency, Low Power consumption and the ability to handle extended duty cycles.

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World 2.1 Features

- Two Channel Amplifier, optimized to drive 4 Ohm and 8 Ohm loads.
- Fan Cooled
- Clean Full-Range Dynamic Power
- World Class Reliability
- Bridgeable
- Ultra Efficient Switch Mode Power Supply
- 3 Years Parts and Labor Warranty

Applications

- Sound Reinforcement
- Pre/Post Productions
- Music and Paging Systems
- High Quality Distributed Sound Systems
- Fixed Installations
- Instrument Rigs
- Amplifier located in Listening Environment
- UL Certification

World 2.1 Product Specifications

Output Power ( 1kHz, .1% THD)	400W X 2 @ 8 Ohms
	650W X 2 @ 4 Ohms
	1350W X 1 @ 8 Ohms Bridged
Frequency Response (+0, -.5dB, 1W)	20 Hz-20kHz
Bandwidth (+0, -3 D)	15 Hz - 45kHz
THD+N	>100Db
Damping Factor	> 500
Slew Rate	30V / microsecond
Input Sensitivity	1V (0 dBV)
Standard Voltage Gain	66X (+36.4dB)
Input Impedance (Balanced/Unbalanced)	20k Ohms/10kOhms
Class	H
Input Connectors	Rear Panel 3 pin XLR, 1/3 Phone, Barrier Strip
Output Connectors	Rear Panel 6 gauge, 5-way Binding Post
Power Supply	High Speed Switching
Cooling	Variable speed Fan
Controls	Power on/off, Channel Gain
LED Indicators	Power, Signal present, -3dB & Clip
Construction	Steel & Aluminum Chassis
Dimensions (h, w, d)	3.5" x 19" x 15.3" 8.9cm x 48.3cm x 38.1cm
Weight	17 lbs (7.7kg)
Warranty	3 years Parts & Labor

Architects & Engineering Specifications

The power amplifier shall consist of 2 channels. Model World 2.1 shall deliver a minimum of 400W at 8 Ohms, both channels driven, 20 Hz-20 kHz, < .1% THD. The amplifier shall be fan cooled. The amplifier shall have circuitry to protect itself and the speaker loads from output short circuits, DC voltage on the outputs, and thermal overload. The amplifier shall have a voltage gain of 40X (32dB) and an input sensitivity of 1V for rated power at 4 outputs. The hum and noise level shall be greater than 100 dB below rated output "A" weighted. The amplifier shall have a class H output stage and a high-speed Switch Mode Power Supply. Non Switch Mode Power Supplies will not be accepted. The frequency response shall be greater than 15 Hz to 45 kHz +0, - 3dB at rated power. The amplifier shall operate on 120VAC. The front panel shall contain, for each channel, a knob adjust, detented level control, LED indicators for -20 dB signal present, -3dB, Clip, and Power. The power switch shall be a power supply enable switch. The Rear panel shall contain a captive AC line cord. The rear panel input terminals shall be both 3 pin XLR, 1/4" Phone and Barrier Strip. The amplifier dimensions shall be 19" (48.3 cm) wide, 3.5" (8.9 cm) high, and 15.3" (38.9) deep. The World 2.1 shall weigh 17 lbs (7.7 kg). The amplifier shall be designated the Stewart Audio Model World 2.1