[VoiceOps] Old PA System setup

[Brian Hales]

I am not very familiar with a lot of the old Nortels but the ones I have taken over (MICS and CICS) all have a page port but do supply power. There has always be an external power supply. Either way you just need a power supply and should be good.

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Brian Hales
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From: Darin Steffl <darin.steffl at mnwifi.com>
Date: Friday, April 19, 2019 at 8:48 AM
To: Brian Hales <brianhales at trueipsolutions.com>
Cc: VoiceOps <voiceops at voiceops.org>
Subject: Re: [VoiceOps] Old PA System setup

It was being fed from an old Nortel pbx using rj11. One pair for power and one for audio.

So really if I can just feed it 24v, the snom should still work if I put in a line level adapter? Can't I just turn the output way down on the speaker output to achieve the same thing?

On Fri, Apr 19, 2019, 7:38 AM Brian Hales <brianhales at trueipsolutions.com<mailto:brianhales at trueipsolutions.com>> wrote:
You can use the Snom PA1 with those valcom speakers. You just need to use a valcom power supply. If the speakers where existing, there is most likely a 24 power supply there now. If not you can order one form valcom.  They measure their power in VPUs, each speaker has a VPU rating. Make sure you get one large enough to handle all the speakers.



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Brian Hales
Chief Tech. Officer | True IP Solutions LLC

p: (910) 249-4255 m: (910) 305-0676
w: http://trueipsolutions.com/

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From: VoiceOps <voiceops-bounces at voiceops.org<mailto:voiceops-bounces at voiceops.org>> on behalf of Darin Steffl <darin.steffl at mnwifi.com<mailto:darin.steffl at mnwifi.com>>
Date: Thursday, April 18, 2019 at 6:40 PM
To: VoiceOps <voiceops at voiceops.org<mailto:voiceops at voiceops.org>>
Subject: [VoiceOps] Old PA System setup

Hey guys,

https://www.valcom.com/pdf/v1030c_v1036c.pdf

We're trying to find the best way to interface 3 old Valcom speakers V-1030c to an IP paging system.

I have a Snom PA1 but that won't work as we initially thought because speakers need 4 wires on a 24v power system. So 2 wires are for 24v power, and the other 2 are for audio. The snom only has a positive and negative output that feeds passive speakers, not active speakers like these.

What is the best way to utilize these 3 speakers or should we just replace the speakers? We're trying to keep budget to a minimum for them so we would prefer to utilize the same speakers but what's the best way to power them and feed them audio using the existing 2-pair RJ11 cable they use?

Thank you

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Darin Steffl
Minnesota WiFi
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