What are the three operating modes on the Ultra Surround?

For the ultimate in flexibility, the Ultra Surround can operate in three different surround sound modes:

• Duet mode - each set of drivers receives a discrete signal.
• Bipole - both sets of drivers in phase.
• Dipole mode - both sets of drivers out of phase.

Duet mode is a unique configuration which allows a single Ultra Surround speaker to be used as two independent speakers. This means you can use just two (2) Ultra Surround speakers, and still have four (4) discrete side/rear surround channels for a true 7.1 surround setup. Duet mode is recommended for all home theater systems which have a 7.1 A/V receiver and use one (1) pair of surround speakers.

In bipole mode, both sets of speakers are in phase, which provides a more localized and directional surround sound effect. Bipole mode is recommended for home theater systems which have a 7.1 A/V receiver and use separate side surround speakers and rear surround speakers.

In dipole mode, both sets of speakers are out of phase, which provides a more diffuse and non-directional surround sound effect. Dipole mode is recommended for home theater systems which have a legacy 5.1 A/V receiver and use one (1) pair of surround speakers which are mounted directly to the sides of the listening position.

Do I need an external amplifier to power the SVS Ultra loudspeakers?

The SVS Ultra loudspeakers have excellent sensitivity and are easy to drive with any quality A/V receiver. If the Ultra loudspeakers are being placed in a large listening environment and will be driven to high playback levels, and external amplifier will help avoid amplifier clipping and maintain optimal system dynamics..