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[pkymsh]

is there 5 or 6 zone speaker selector for 70 volt system?
I can't find any...
can I use any zone selector with matching impedance on 70 volt system?
your help is appreciated....

[Hal Bissinger/COMSYSTEC]

There is no impedance matching required. Zone selectors, when needed, are usually custom fabricated.

-Hal

[Robb Blumenreder]

If you're trying to route the same signal to different zones at different times - there are some 70V products that offer a Mixer Amplifier with built in six zone selector switches.  Keep in mind that this is not selecting specific inputs to specific outputs or matrix routing, but - instead - is enabling the user to divide up zones with the speaker selector switches and route the main output mix to individual zones.

Because the mixer, amplifier and zone selector switches are all part of the same unit, you just have to ensure you don't exceed the power rating of the amplifier when you enable the zone selector switches.  For example, if you have 6 different zones, and a 120 watt amplifier, you could have 10 watts into zone 1, 30 watts into zone 2, 50 watts into zone 3, 10 watts into zone 4, 10 watts into zone 5 and 10 watts into zone 6...

Good luck with the search!

Best regards,

Robb Blumenreder
Sennheiser Electronic Corporation
Distributors of Australian Monitor Products

[baking and welding audio]

you can also use seperate pieces of gear, a zone mixer, and 70v amplifiers to accomadate each zone.

Rolls makes cheap zone mixer.  

this way you have control over each zone as well.

good luck

[KAZUM]

If you are looking for a "zone controller" similar to the 4 and 6 zone units that are installed in home type situations there aren't devices like that for 70v systems.  The easiest thing to do to replicate that type of situation would be to take the 70v output from your amplifier and run it through 4 - 6 area volume controls.  These would need to 70v units that are readily available and inexpensive 10.00 each.  You could have 1 - 10 or how ever many of these units you wanted, just need to do as mentioned above watch out for the power draw on the system.  You have X amount of speakers and you will tap them at X just make sure that the amount of power doesn't exceed your amplifier power output.  Also these volume controls come with power ratings such as 10 watt, 35 watt and so on.  Make sure the load on that circuit doesn't exceed the rating of the volume control.