Hafler SE240 owner manual Introduction, Installation, Ventilation, Location

INTRODUCTION

The Hafler SE-240 is a two channel audio amplifier which has been engineered to meet high performance and reliability standards while maintaining affordability.

The amplifier employs a sonically proven circuit topology driving MOSFET output devices. These devices provide exceptional reliability as a result of their inherent rugged- ness and resistance to abusive operating conditions. Con- sequently, the SE-240 is capable of delivering high current into low impedance loads, and generally the amplifier will not be damaged in the case of an accidental short circuit at the output. The drive circuitry is a high performance arrangement with a double differential JFET input. Quality components are used in the design to ensure longevity and, above all, sonic excellence.

INSTALLATION

Ventilation

Adequate air flow is important to the continuing reliability of any amplifier. Cool air must be able to circulate freely through the perforations in the cover and under the chas- sis, and around the heat sinks. It is expected that the amplifier will always be resting on its feet, which should be on a hard enough surface that air flow underneath will not be obstructed. If the amplifier is mounted in a rack, or through a panel, the feet may be removed so long as adequate ventilation is provided through the bottom open- ings. It is normal for the cover and heat sinks to become warm in use.

Location

If the amplifier is to be installed close to a record player, you should first check its position for freedom from hum pickup by the phono cartridge, as any large power trans- former radiates a field which may induce hum. Although

3