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    Using a Snom PA1 for paging

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    snom pa1 snom pa1 paging pbx asterisk freepbx
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    • JaredBuschJ
      JaredBusch
      last edited by

      0_1535384005357_c831ca4d-67a1-480d-ace0-423f475b1cda-image.png

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      • JaredBuschJ
        JaredBusch
        last edited by

        OP updated.

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        • B
          bnrstnr
          last edited by

          We have ours connected from the PA1 "Line Out" port to a Bogen TPU-100B, without any kind of impedance adapter.

          JaredBuschJ 1 Reply Last reply Reply Quote 0
          • JaredBuschJ
            JaredBusch @bnrstnr
            last edited by JaredBusch

            @bnrstnr said in Using a Snom PA1 for paging:

            We have ours connected from the PA1 "Line Out" port to a Bogen TPU-100B, without any kind of impedance adapter.

            It all comes to impedance matching.

            If that output and the Bogen input are the same, you need nothing.

            Just like my above example of the Chromebook straight to the Aux-In.

            1 1 Reply Last reply Reply Quote 1
            • 1
              1337 @JaredBusch
              last edited by

              @jaredbusch Thanks Jared.

              BTW I found this from the PA1 users manual:

              One "MIC in" and one "LINE out" 3.5 mm connector for headset connection (SPK impedance =
              150 Ohm, MIC power supply 3.3V, RL = 2 KOhm, S= -42 dB (+-2dB)). Microphone input must
              be differential and without grounding. This port is for installation and maintainance purposes
              only, not for the connection of other devices.

              So the impedance on the headset output (aka line out) is 150 ohm.

              JaredBuschJ 1 Reply Last reply Reply Quote 1
              • JaredBuschJ
                JaredBusch @1337
                last edited by

                @pete-s said in Using a Snom PA1 for paging:

                @jaredbusch Thanks Jared.

                BTW I found this from the PA1 users manual:

                One "MIC in" and one "LINE out" 3.5 mm connector for headset connection (SPK impedance =
                150 Ohm, MIC power supply 3.3V, RL = 2 KOhm, S= -42 dB (+-2dB)). Microphone input must
                be differential and without grounding. This port is for installation and maintainance purposes
                only, not for the connection of other devices.

                So the impedance on the headset output (aka line out) is 150 ohm.

                Yup. That is why I generally never use it.

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                • D
                  Dragon3303 @JaredBusch
                  last edited by

                  @jaredbusch

                  I ran across this post in searching for some information in hooking up an SNOM PA1 to an amp that I inherited in a building setup here and I'm still confused in my particular situation after looking at the picture you provided. There was a crown amplifier that was already in place and two speakers (70v speakers) in the shop area hooked to that and I want to hook the SNOM PA1 to that amp to page over the loudspeakers, but I'm unsure if I need an impedance adapter or something between the SNOM and the amp. Here's picture of the back of the amp:

                  (0_1535406299960_crown amp.jpg

                  If I hook a traditional speaker up via the line out on the SNOM I'm able to hear everything as I would expect when paging over that speaker, but do you have any advice as to what the hookup to the amp would look like? Would I need an adapter that splits line out to either input 2 or 3? Or something else entirely? Thanks.

                  JaredBuschJ 1 Reply Last reply Reply Quote 3
                  • JaredBuschJ
                    JaredBusch @Dragon3303
                    last edited by JaredBusch

                    @dragon3303 said in Using a Snom PA1 for paging:

                    @jaredbusch

                    I ran across this post in searching for some information in hooking up an SNOM PA1 to an amp that I inherited in a building setup here and I'm still confused in my particular situation after looking at the picture you provided. There was a crown amplifier that was already in place and two speakers (70v speakers) in the shop area hooked to that and I want to hook the SNOM PA1 to that amp to page over the loudspeakers, but I'm unsure if I need an impedance adapter or something between the SNOM and the amp. Here's picture of the back of the amp:

                    (0_1535406299960_crown amp.jpg

                    If I hook a traditional speaker up via the line out on the SNOM I'm able to hear everything as I would expect when paging over that speaker, but do you have any advice as to what the hookup to the amp would look like? Would I need an adapter that splits line out to either input 2 or 3? Or something else entirely? Thanks.

                    Welcome to ML. Must be some amazing search engine shit going on since I just posted that this morning.

                    Anyway. To answer your question.

                    No, you do not need to do anything because your amplifier has an 8Ω input on it.
                    0_1535407099056_7b52bffa-2160-422c-9a14-9e1a60e18ae4-image.png

                    Disable the built in amplifier in the Snom settings and connect it there.

                    D 2 Replies Last reply Reply Quote 2
                    • D
                      Dragon3303 @JaredBusch
                      last edited by

                      Sounds good...I'll give it whirl and see what happens. Thanks!

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                      • D
                        Dragon3303 @JaredBusch
                        last edited by

                        @jaredbusch

                        OK...back at this site this afternoon and I've got a pair of wires run now from the speaker connection (red and black) on the SNOM PA1 to the 8Ω input there on the amp. In the Preferences->PA1 Controls section in the SNOM settings, amplifier gain is set to 0. I still hear nothing on the two loudspeakers connected to the amp. Not sure what I would be missing.

                        JaredBuschJ 1 Reply Last reply Reply Quote 0
                        • JaredBuschJ
                          JaredBusch @Dragon3303
                          last edited by

                          @dragon3303 No idea. This is normally a pretty straightforward thing.

                          I always say to disable the amp in the Snom to make sure you are not over driving the input on your amp.

                          You have a sensitivity adjustment there on the amplifier. have you turned it up and down while testing?

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                          • D
                            Dragon3303 @JaredBusch
                            last edited by

                            Yes...I've tried adjusting the level but no results with that either. I'll keep at it and figure it out. Thanks for pointing me in the right direction.

                            JaredBuschJ 1 Reply Last reply Reply Quote 0
                            • JaredBuschJ
                              JaredBusch @Dragon3303
                              last edited by

                              @dragon3303 said in Using a Snom PA1 for paging:

                              Yes...I've tried adjusting the level but no results with that either. I'll keep at it and figure it out. Thanks for pointing me in the right direction.

                              I would have to Google a manual for your amp to see what the specs are for these inputs and such.

                              I was strictly assuming based on the labels.

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                              • S
                                smartfiber
                                last edited by

                                Hello Community -

                                I am having problems connecting our SNOM PA1 to an external amplifier and think I need an attunuator, however, I am not certain how to connect to my amp? (https://proaudio.com/rdl-stp-1-stick-on-universal-attenuator/)

                                If anyone has any design ideas, or knows of a worthy tech in the Mahopac, NY area I'd happily pay a pro to set it up.

                                alt text
                                alt text

                                jt1001001J JaredBuschJ 2 Replies Last reply Reply Quote 0
                                • jt1001001J
                                  jt1001001 @smartfiber
                                  last edited by

                                  @smartfiber I sent you a DM

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                                  • JaredBuschJ
                                    JaredBusch @smartfiber
                                    last edited by

                                    @smartfiber it is all about matching impedance or other expected audio parameters.

                                    Part of your issue is that you are using the VDD port.
                                    That is not an audio output port, it is a 3.3V DC output.

                                    https://service.snom.com/download/attachments/17370178/PA1 Connector Overview.pdf?version=1&modificationDate=1556009706216&api=v2

                                    55b20ebe-3300-49a7-8ca8-ec8e2094186a-image.png

                                    And you are plugging it in to an output from your amp.
                                    cdc2f287-1b9e-4cf4-b21e-8bf392ae1687-image.png

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                                    • ITivan80I
                                      ITivan80
                                      last edited by

                                      You may also want to look into cable management solutions as well.

                                      1 Reply Last reply Reply Quote 1
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