Description, Connections, Operation | Russound PRO-VC specification

1. Description

The PRO and PRO-VC series speaker selectors are highly efficient dual-source, impedance-matching selectors. These high-quality speaker selectors are designed for use with either 4 Ohm or 8 Ohm amplifiers and 4 Ohm to 8 Ohm speakers. In addition to speaker selection, the PRO-VC units include a volume control on the number 1 pair of speakers.

The PRO and PRO-VC speaker selectors are equipped with a low-frequency protection circuit to reduce subsonic signals. This allows high power operation without amplifier shutdown. The PRO and PRO-VC units employ audiophile-grade impedance matching auto- formers to maintain a safe operating load at the amplifier while distributing maximum power through the system. Autoformers are very efficient because of the small loss incurred as a result of heat dissipation. Both series are equipped with a back panel rotary switch, which is used to set the appropriate impedance based on the number of pairs of speakers connected. This switch selects the proper taps of the autoformers, allowing all of the amplifier’s power to be delivered to the speakers.

The PRO and PRO-VC speaker selectors can be connected to one or two amplifiers. A front panel button allows switching between the two amplifiers for all speakers connected to the unit.

2. Connections

The PRO and PRO-VC series have removable modular snap connectors that provide color-coded wire terminations without the need for set-screws. Strip about 3/8” of insulation from the ends of all wires to be connected. If necessary, twist the exposed conductor to insure that no loose strands exist. Remove the AMP A connector by firmly pulling it out of its 4-pole connector. Lift the wire locking lever on connector. Insert the wires from amplifier A output, being careful to observe the polarity, then lower the lever with a “snap.” In the same way, connect the amplifier B output to the AMP B connector. Follow the same procedure to connect each pair of speakers to the appropriate SPEAKER connector, observing proper channel and polarity. If external volume controls are used, connect speaker wire from the appropriate speaker connector on the PRO/PRO-VC to the volume control input. Speaker connections can support multiple speaker pairs wired in parallel or series, provided their combined impedance is a minimum of 4 ohms.

3. Operation

To ensure safe operation of the amplifier, an impedance level must first be selected using the rotary switch labeled SPEAKER PAIRS located on the rear of the unit. This switch should be set to the total number of speaker pairs being connected to the unit. Set the switch based on the following conditions:

•If the amplifier and the speakers are both 4 ohms, set the rotary switch to the number of pairs of speakers connected to the PRO/PRO-VC.

•If the amplifier and the speakers are both 8 ohms, set the rotary switch to the number of pairs of speakers connected to the PRO/PRO-VC.

•If the amplifier is 8 ohms and the speakers are 4 ohms, set the rotary switch to TWICE the number of pairs of speakers connected to the PRO/PRO-VC.

•If the amplifier is 4 ohms and the speakers are 8 ohms, set the rotary switch to HALF the number of pairs of speakers connected to the PRO/PRO-VC.

After setting the proper impedance level, the speakers can be turned on and off in any combination.

To switch between the A and B amplifiers, push the AMP A / AMP B button located on the front panel.

PRO-VC:The Speaker 1 volume control feature of the PRO-VC allows volume adjustment for the speakers connected to the first (speak- er 1) position on the unit. This feature is designed to operate with systems where the main pair of speakers are in the same room as the speaker selector. Set the receiver’s volume once, and then adjust the volume in the main room with the PRO-VC. The volume level of the remaining speakers should be adjusted using additional volume controls.

4. Setting System Volume

It is important to properly adjust an impedance-matching system to avoid distortion or DC clipping (DC voltage will be produced from an amplifier that is overworked or that has an improper load). These can cause an amplifier/receiver to go into protection, and can cause autoformers on volume controls to heat up, damaging system components. To set up the system, the amplifier/receiver volume should be at its lowest setting, and the in-wall/selector volume control should be at the highest setting. Slowly adjust the amplifier/receiver volume to a level that is acceptable for the amplifier to produce without clipping.

PRO, PRO-VC specifications

The Russound PRO-VC,PRO is an advanced multi-zone audio control system that exemplifies the intersection of simplicity and sophistication in home audio management. Designed for both residential and commercial applications, this system allows users to create, manage, and enjoy rich audio experiences in different spaces through a single, centralized solution.

One of the main features of the Russound PRO-VC,PRO is its ability to manage multiple sources and zones seamlessly. The system supports up to 6 audio zones, enabling users to play different audio sources in different areas of their home or business. This feature provides flexibility in today's diverse audio landscape, accommodating various preferences and needs.

In terms of source options, the PRO-VC,PRO can integrate with traditional audio sources such as CD players and tuners, as well as modern streaming solutions like Bluetooth and network audio sources. This versatility allows for a rich and diverse audio library accessible from any zone, catering to different tastes and needs.

The Russound PRO-VC,PRO also boasts advanced technologies that enhance user experience. One of these is its easy-to-use interface, which includes intuitive keypads that have customizable options, making it simple for users to control their audio system without technical expertise. The keypads can be installed in wall-mounted or tabletop configurations, allowing for flexibility in installation.

Moreover, the system features Russound's proprietary RNET technology, which allows for seamless communication between devices. This technology helps to mitigate lag and provides a synchronized audio experience across all zones, ensuring that users enjoy their music without interruption or delay.

Another noteworthy characteristic of the PRO-VC,PRO is its robust build quality, designed to withstand the rigors of daily use while maintaining optimal performance. The system incorporates high-quality components that ensure reliable and clear sound reproduction, fulfilling even the most discerning audiophile's expectations.

In addition to audio management, Russound integrates smart home capabilities into the PRO-VC,PRO, enabling effortless control through compatible home automation systems. This integration provides users with an enhanced experience as they can automate audio settings, adjust zones, and create scenes that align with their lifestyle.

In summary, the Russound PRO-VC,PRO is a comprehensive solution for multi-zone audio control, offering versatility, advanced technology, and user-friendly interfaces. Whether for personal enjoyment at home or for managing audio in commercial spaces, this system stands out as a leading choice for those seeking quality and versatility in their audio experience.