Stewart Audio AV25 Users Manual

AV Series

Power Amplier

The sub compact AV25 is built to meet the rigorous demands

of high quality commercial, industrial and Pro Audio sound

installations. Low cost, lightweight and convection cooling

make this Class D amplier exible enough for a broad range

of applications requiring quiet amplication. With an extremely

compact form factor, the AV25 allows amplication to be located

in places off limits to normal ampliers without compromising

sound or power. Like all Stewart products, the AV25 is designed

for sonic accuracy, high efciency and extended duty cycles. Our

Signal Sense Power Technology

is only powered when there is a signal present, saving energy and

extending product life.

TM

(SSPT TM) ensures the amplier

AV25

35W x 2 @ 4 Ohms

25W x 2 @ 8 Ohms

Features:

• Sub Compact 1/4 rack package

• Two channel amplier, optimized to drive 4

Ohm and 8 Ohm loads

• Music and re alarm muting

• Clean full–range dynamic power

• Signal Detect trigger for sleep & wake up

• Multiple mounting options

• External inline power supply

• Made in the USA

Applications:

• Boardrooms & classrooms

• AV projection systems

• Lecterns and Podiums

• Plenum applications, UL 2043 rated

• Pole mounting option

• Fixed installations with ampliers

located in listening environment

• Applications where traditional

ampliers won’t t

• Behind at screen televisions

14397 Cuesta Court Ste D1 • Sonora Ca 95370 • TEL: [phone] • www.stewartaudio.com

AV25

35W x 2 @ 4 Ohms

25W x 2 @ 8 Ohms

Specifications

4 Ohm Stereo Power
8 Ohm Stereo Power
Frequency Response (+0, –3 dB, 1W)
Power Bandwidth (+3, –3 dB)
THD+N
Signal to noise ratio
External Mute
Slew Rate
Input Sensitivity
Standard Voltage Gain
Input impedance (Balanced/Unbalanced)
Standby, Idle Current Draw , 1/8 power draw
Class
Input Connectors
Output Connectors
Power Supply
Cooling
Controls
LED Indicators
Construction
Dimensions (height, width, depth)
Weight
Warranty
Plenum Rating

35 W
25 W
30 Hz—20 kHz
30 Hz—30 kHz
<.1%
>100dB
5-12V DC
30V/microsecond
.5V (-3 dBV)
28X (26.5dB)
20k Ohms/10k Ohms

0.005/ 0.01/0.15 Amps

D

Euro Block
Euro Block
External in-line 48VDC (Included)
Convection–Cooling (No Fans)
Level
Power, Signal Present & Clip
Aluminum Chassis

1.25”H x 4.35” W x 3.2” D (3.2H x 11.1W x 8.1D cm)
<.37 lbs (0.16 kg)
3 years
UL 2043 Approved

Architects & Engineering Specications

The power amplier shall consist of 2 channels. Model AV25
shall deliver a minimum of 25W at 8 Ohms and 35W at 4 Ohms,
both channels driven, 30 Hz—30 kHz, < .1% THD. The amplier
shall be convection cooled, requiring no fan. Ampliers using fan
cooling will not be accepted. The Amplier shall contain SSPT
Technology ensuring the device is only powered when a signal
is detected. The amplier shall have circuitry to protect itself and
the speaker loads from output short circuits, DC voltage on the
outputs and thermal overload. The amplier shall have a voltage
gain of 28X (26.5dB) and an input sensitivity of 0.5V for rated
power at 8 Ohm output. The amplier shall have an external in-

line Power Supply. Internal Power Supplies will not be accepted.
The frequency response shall be greater than 30Hz to 20 kHz
+0, – 3dB at rated power. The rear panel shall contain LED Clip
indicators for each channel, signal present and power. The Rear

TM

panel shall have a Phoenix block connectors for power, input,
output and mute/re alarm, recessed level, signal sensitivity
controls The AV25 shall weigh .37 lbs (.16 kg) and shall be 4.35”
(11.1 cm) wide, 1.25” (3.2 cm) high, and 3.2” (8.1 cm) deep. The
amplier shall be designated the Stewart Audio Model AV25.

14397 Cuesta Court Ste D1

Sonora Ca 95370

TEL: [phone]

www.stewartaudio.com