3 INSTALLATION / 4 OPERATION

P.16

WARNING !

SPEAKON connectors marked with the lightning flashes indicate high voltages that are potentially life threatening.

Wiring to these terminals requires installation by an instructed person or the use of ready-made leads or cords.

Custom wiring should only be carried out by qualified personnel.

To prevent electric shock, do not operate the amplifier with any of the conductor portion of the speaker wire exposed.

NOTE:

For reasons of safety and performance, use only high-quality fully insulated speaker cables of stranded copper wire. Use the largest wire size that is economically and physically practical, and make sure the cables are no longer than necessary.

IMPORTANT:

When connecting speaker cabinets in parallel, always use all the contacts in both SPEAKON connectors. If not, this may cause permanent damage to the connectors and considerably reduce performance.

USER MANUAL

VORTEX 6, 4, 2.6 and 200V

4.1 Controls

4.1.1 Volume Control

A microprocessor-controlled DCA (Digital Controlled Attenuator) with a control resolution of 12 bits per channel is integrated into the signal path. This means that the signal is not subject to an A/D followed by a D/A conversion with associated losses.

Using a DCA instead of the “conventional” VCA significantly reduces distortion and, at the same time, it improves the noise characteristics. A volume control with 41 notched settings controls the DCA via a microchip.

These settings have been selected to correspond to human hearing characteristics (logarithmically) and therefore guarantee an optimal range of settings for practical applications. Each channel can be set individually except when operating in mono modes whereby only channel A is active.

Set the volume to zero before turning on the amplifier to prevent the occurrence of sudden high volume levels which may cause damage to your hearing and/or the speakers.

The volume controls are also used to set the CAI address. (See 5.2.2 CAI Address Settings)