ELECTROCOMPANIET AW-250 User Manual

AW-250 DUAL MONO
BALANCED POWER AMPLIFIER
Owner’s Manual
WARNING: To reduce risk of fire or electric shock, do not expose this appliance to
rain or moisture. Verify line voltage before use.
Do not remove cover. No user serviceable parts inside. Refer servicing to qualified
service personnel. The warranty in void if the product is tampered with by non
authorised personnel. Use only authorised Electrocompaniet service station.

ELECTROCOMPANIET AW-250 Specifications

Power

main voltage	120 V / 240 V
power consumption (no load or signal)	230 W

Impedance

output impedance	< 0.008 Ohm
RCA (single) input impedance	220 kOhm
XLR (balanced) input impedance	110 kOhm

Output Power

rated output power at 8 Ohm	2 x 250 W
rated output power at 4 Ohm	2 x 380 W
rated output power at 2 Ohm	2 x 625 W
rated output power at 1 Ohm	2 x 1100 W

Weight and Dimensions

width	483 mm / 19 inches
depth	450 mm / 17 inches
height	210 mm / 8.2 inches
weight	39 kg / 85.8 lbs

Summary

AW-250 DUAL MONO BALANCED POWER AMPLIFIER Owner's Manual

Important Safety Warning

Critical safety instructions regarding fire, electric shock, moisture, and authorized servicing.

The Electrocompaniet Story

Company History and Design Philosophy

Details the founding of Electrocompaniet and its design philosophy for transistor amplifiers.

The Design Features of Ampliwire 250 DMB

Feedback Theory and Stage Design

Explains the novel approach to feedback theory and individual gain blocks in amplifier design.

Amplifier Circuit Configuration

Details the division into input and output blocks and their respective functions.

Power Supply and Capacitors

Describes the power supply components, including toroidal transformers and capacitors.

Connecting and Setting Up the AW 250 DMB

Unpacking and Carton Contents

Instructions for inspecting the amplifier upon arrival and checking the package contents.

Connecting to Mains and Avoiding Damage

Guidance on connecting the amplifier to power and precautions to prevent equipment damage.

Rear Panel and Input Configuration

Description of the rear panel inputs and initial setup for single-ended operation.

Operation and Maintenance Procedures

Balanced Input Modes

Instructions for using balanced XLR and RCA inputs with compatible preamplifiers.

System Power On/Off Sequence

Correct sequence for turning the audio system on and off to protect speakers.

Replacing the Main Fuse

Step-by-step guide on how to safely replace a blown main fuse.

Amplifier Operating Conditions

Ventilation and Heat Warning

Information regarding normal amplifier warmth and required ventilation for Class A operation.

Service and Support Information

Service Policy and Contact

Details on how to obtain service, factory shipping instructions, and contact information.

Technical Specifications AW250DMB

Measurement Equipment Used

List of test equipment utilized for measuring the amplifier's technical data.

Amplifier Section Specifications

Detailed electrical specifications including impedance, sensitivity, current, THD, and noise.

Rated Output Power

Specifies the output power ratings for different impedance loads.

Power Consumption and Dimensions

Details on power usage, physical dimensions, and weight of the amplifier.