User Manual

2.7 Connecting to AC Mains

Connect your amplier to the AC mains power source (power outlet) with the

supplied AC power cord. First, connect the IEC end of the cord set to the IEC

connector on the amplier; then, plug the other end of the cord set to the AC mains.

When properly connected to a live power source, the power LED should illuminate

blue.

WARNING: The third prong of this connector (ground) is an important safety feature.

Do not attempt to disable this ground connection by using an adapter or other

methods.

Ampliers don’t create energy. The AC mains voltage and current must be sufcient

to deliver the power you expect. You must operate your amplier from an AC mains

power source with not more than a 10% variation above or below the specied line

voltage and within the specied frequency range indicated on the back panel of the

amplier. If you are unsure of the output voltage of your AC mains, please consult

your electrician.

2.8 Protecting Your Speakers

It’s wise to avoid clipping the amplier signal. Not only does clipping sound bad, but

it can damage high-frequency drivers. The built-in clip limiter prevents clipping.

Also, avoid sending strong subsonic signals to the amplier. High-level, low-

frequency signals from breath pops or dropped microphones can blow out drivers.

You can switch to the HI-Z mode which, in addition to switching in the output

transformers for 70V and 100V speakers, activates the high-pass lter. The lter

prevents potentially damaging subsonic signals from going to the amplier by

eliminating signals below 70Hz.

2.9 Startup Procedure

Use the following procedure when rst turning on your amplier:

1. Turn down the level of your audio source.

2. Turn down the level controls of the amplier.

3. Power up the amplier. The blue Power LED should be ON.

4. Turn up the level of your audio source to an optimum level.

5. Turn up the Level controls on the amplier until the desired loudness or power

level is achieved.

If you ever need to make any wiring or installation changes, don’t forget to

disconnect the power cord.