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Jamo JSS4-VC2 - 4 Zone Volume control and Speaker Selector system for saleExcellent as new condition Somerset West area R3650Interested phone Deon*0833095897* The Jamo JSS4-VC2 Speaker Selector-Volume Control is designed to operate with up to 4 pairs of loudspeakers of 4, 8, and 16 Ohms impedance in any combination. It can be used with one or two stereo amplifiers, or with 4 Channels of a surround-sound type sound system.Each of the output Control channels can be individually switched to the amplifier connected to the A INPUT or the B INPUT. Thus it is convenient to listen to different program material in different rooms, swap front and rear channels in a surround-sound system, etc.Impedance loading protection for the power amplifier(s) is built-in, and fully automatic. Four 50 Watt RMS AUTOMATCH™ attenuators are employed, pre-set so that the worst-case operating condition (four pairs of 4 Ohm speakers operating simultaneously at maximum volume) will appear as a 4 Ohm load on the amplifier. Higher impedance speakers and/or lower volume settings of the controls will reflect a higher impedance to the amplifier, so that safe operation is assured.Since impedance matching protection is achieved by use of AUTOMATCH™ transformers, there is no heat generated in the matching process- this assures safe operation in a closed environment. There are no extra buttons to operate that must be remembered to maintain safe operation. An additional advantage is that there is no power loss in the speaker selector. There is a level drop of -6 dB to the speakers at maximum volume settings of the speaker selector controls (at the factory setting), but this is not a power loss. When all 4 or 6 controls are set at maximum volume, the full power of the source amplifier is available, divided equally among each of the 4 or 6 speaker pairs.Both the A and B amplifier inputs are identical, and completely independent of each other.Speakers selected for operation with the A amplifier input will have the same impedance protection as those that may be operating with the B amplifier. The number of pairs of speakers in operation on either channel will have no effect on any operating on the other. Other speaker selector features include power handling capability of up to 50 Watts RMS continuous at 8 Ohms in any switching mode. The LEFT and RIGHT channels are completely separate to assure safe operation with all types of amplifiers, including those with “bridging” outputs. The volume attenuators are tapped auto-transformer type with attenuation of 3 dB/step except for the last 2, which are 4 and 6 dB. These controls do not heat up in operation, nor do they deteriorate over long time use.

Somerset West

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Other Audio & Sound Equipment in Strand