Nortel Amplified Paging

[alphil]

What would be the best to use for amplified paging with a Nortel Mics. I need to hook up 10 horn speakers and 6 ceiling speakers with about 3 zones.

Should I look at Valcom or Bogan? Which one is easy to install and maintain and has a good loing life for indoor and outdoor?

Is there a good site to purchase from?

Thanks!

 

[SYQUEST]

Both Bogen and Valcom are good choices. Part would depend on the type of speakers or horns. Valcom makes some self-amplified horns, which may or may not be an advantage.

If you are going to use a regular paging amplifier, the speaker distribution line will need to be either a 25 volt or a 70.7 volt setup. As such you will need to comply with NEC article 725 and 800, covering low voltage and power limited circuits.

Besides Bogen's website,

http://www.bogen.com

, Atlas Sound, @

http://www.atlassound.com

, has a lot of good reference info for planning a paging system. Good DOs and don'ts.

....JIM....

 

[alphil]

THe Plant area is very noisy this is a dry cleaning plant with a lot of noise and trucks in and out all day and night.

I assume that I would just connect the Amp to the pae port?

 

[cook1082]

If you want zone page to the horns/ speakers you need to connect to a CO port to pass DTMF the page port of off the MICS is 1 zone only.

 

[alphil]

Is there not a Page Output on port 15 Bk/Sl that I would connect to lets say the Valcom 2003 input? Isn't this the port that activates when a Speakers page is requested?

 

[cook1082]

From what I have seen in this forum lately is that you can use the page port to pass DTMF.I would like to see it to believe it or the doc on it.

 

[exsmogger]

I just tested on our BCM 200 and I do hear DTMF tones when I dial numbers after accessing the external page. I'll try to do some testing on a MICS later today.

Brian Cox

http://www.jandjcommunications.com

 

[curlycord]

Since early days.....thats how I used to test, dial F62 and press a digit several times and listen for the tones in the back.

 

[RikRodgers]

If you're planning an installation in a loud area, make sure you get at least 15 watt horns for that area.

To determine the size of amplifier you'll need, just add the power rating on each horn you're connecting, and get at least that size amp. I usually go quite a bit higher, to provide for expansion.

 

[alphil]

Thanks. I am considering using the Valcom 3002A. I see this unit has a power supply does that mean that I do not need to have powered speakers and that I can just run two conductors to each speaker or in series from speaker to speaker if I am using jsut one of the zones?

I am looking at these speakers on Valcom and there is several wires in the diagram. It is a little confusing to me.

 

[SYQUEST]

If you are feeling a little confused, you might want to call Valcom tech support and ask questions, and read the documentation!

That way you can get the info you need to feel more confident about what you need to do...

....JIM....

 

[Deweyhumbolt]

Yes, the way you describe, using 2-pair Cat3, and run in parrallel is the easiest way. You don't need Sheilded Cable, you don't worry about taps. Your Valcom speakers will have volume controls, and no Amp to go bad or get blown.

 

[RikRodgers]

The V2003A handles the zones, and does have a 24v output if you're using self amplified horns (4 wire). You'll want to check with valcom to verify how many horns this is recommended to feed. I'm sure you'll need additional power supplies.

If you're using 70v horns (2 wire), you'll still need amplifiers for each zone you want to install speakers on.