Audio Setup

Last Updated: 5 August 2019 at 10:04

Meetinghouse audio systems vary worldwide depending on factors such as meetinghouse location, building age, building design, and decisions made by the local facilities management group. These variations make it difficult to describe exactly how to set up the audio equipment for a meetinghouse webcast. This document provides common methods which may require adaptation to work for each location.

Audio Equipment Needed for Webcasting

Here are the types of audio equipment needed for a webcast:

  1. Audio Source:
    • Broadcast Site (audio equipment needed to connect the chapel sound source into the webcast encoder): chapel sound system audio output, meetinghouse A/V distribution system audio output, or separate external microphone.
    • Receive Site(s) (audio equipment needed to connect sound from the webcast player device into the chapel sound system): chapel sound system audio input, multiple input adapter (crab box).
  2. Audio mixer (recommended at the broadcast site) or mini amplifier with phantom power:
    • An audio mixer allows volume to be adjusted dynamically on one or more audio sources during a broadcast as needed for the variety of speaking volumes and musical numbers.
    • mini amp with phantom power can also be used to boost audio levels before it enters the meetinghouse webcasting encoder.
  3. Audio cables and adapters: The length, size, and type of necessary connecting cables and adapters vary by setup. Common examples are provided below.

Broadcast Site Audio Setup 

Generally, there are three options for capturing audio in a meetinghouse. Two of the options use the chapel sound system, and one uses a separate external microphone. Use the option that best fits your situation:

  • Option A: Use the sound system in the satellite cabinet or technology closet.
  • Option B: Use the audio-out jack found by the clerk’s desk, sacrament table, or pulpit.
  • Option C: Use a separate, second microphone on the pulpit.
  • Note: Any of these options may be improved upon by using an audio mixer between the audio source and the Teradek VidiU encoder audio input. (Please see Using an Audio Mixer.)

Warning: Do not plug the chapel speakers or amplifiers directly into the webcast encoder device. They operate at different voltages. Connecting them will damage components.

Option A: Use the sound system in the satellite cabinet or technology closet.

The equipment in the satellite cabinet or technology closet will vary by location, so follow one of the versions below that best meets your situation:

Option A Version 1—Satellite cabinet or technology closet with a meetinghouse A/V distribution hub installed:

  1. Locate the audio out on the front panel of the meetinghouse A/V distribution hub (AVDH-1).
  2. Use a 3.5 mm audio cable to connect the audio output of the AVDH-1 to the 3.5 mm audio input jack of the Teradek VidiU.

Please see Meetinghouse A/V Distribution Hub for further AVDH-1 & AVDH-2 information.

Option A Version 2—Satellite cabinet or technology closet with other A/V switcher equipment installed (non-AVDH):

  1. Locate the audio output jack of the A/V equipment. Since A/V equipment varies, this may be labeled in the rack as Audio Out, Webcast Audio Out, Chapel Mix Out, or something similar.
  2. Connect the audio output of the A/V equipment to the 3.5 mm audio input jack of the Teradek VidiU. The audio output jack of the A/V equipment will vary (e.g., RCA, 3.5 mm phono, XLR) so use the proper cable or adapter.
  3. Some newer systems will have XLR audio output jacks labeled Chapel Mix, Choir Mics 1/2, and Organ. You can connect these individual XLR outputs into an audio mixer for precise control of the volume throughout your webcast. The sound mixer’s output will then be connected to the 3.5 mm audio input jack of the Teradek VidiU. (Please see Using an Audio Mixer.)

Option A Version 3—Satellite rack with other RF equipment installed:

  1. Open the door to the satellite equipment rack.
  2. Locate the modulator that is used for the chapel overflow area. This is usually the highest channel number in the U.S. For example, if the rack has a channel 3 and a channel 10, and if channel 3 displays a picture while channel 10 does not, then the chapel output is probably on channel 10. The correct channel will show the chapel when the camera is connected to the video input jack located at the back of the chapel.
  3. Open the back of the rack and find the modulator for the back of the chapel overflow. There should be three cables: RF Out, Video In, and Audio In.
  4. Unplug the Audio In cable from the back of the chapel overflow modulator and plug it into one of the female connectors on the Y adapter (found in the LDS-MECP Wiring Kit).
  5. Plug the male connector from the Y adapter into the back of the chapel overflow modulator.
  6. Plug the Mini-to-RCA adapter (side with the male RCA) into the last connector on the Y adapter.
  7. Plug the Mini-to-RCA adapter (side with the 3.5 mm plug) into the audio input on the encoding device.

Option B: Use the audio out jack found by the clerk’s desk, sacrament table, or pulpit.

The webcast encoding device can be connected to an audio out jack found near the clerk’s table, the sacrament table, or the audio out connections found at the pulpit.

  1. Locate the audio output jack found near the clerk’s desk, under the sacrament table, or at the pulpit connections. This is typically a 3.5 mm phono or RCA-type jack.
  2. Connect the proper audio cable from the audio output jack to the 3.5 mm audio input jack of the Teradek VidiU.

Option C: Use a separate second microphone on the pulpit.

This option uses a separate microphone instead of the chapel audio system. This requires an audio mixer.

  1. Mount an alternate microphone at the pulpit or speaking location.
  2. Connect a microphone cable to the alternate microphone.
  3. Plug the microphone cable into the mixer.
  4. Connect a cable from the output of the mixer to the audio input on the Teradek VidiU encoder. Depending on the mixer, the connector will be 1/4-Inch, RCA, or 3.5 mm. The connector on the encoding device is 3.5 mm. Therefore, an adapter may be required.

Receiving Site Audio Setup

Many chapel sound systems feature RCA or 3.5 mm inputs.  If these are not available, connect the receiving device audio output to the chapel sound system using a multi-adapter input device (commonly called a crab box):

  1. Connect the crab box 3.5 mm cable to the receiving device headphone jack.
  2. Plug the other end of this cable into a fitting jack on the crab box (on EJ-10, EJ-8, or EJ-2 Plus crab boxes).
  3. Connect the crab box XLR microphone output cable to a microphone XLR input jack in the chapel.

Tips: Adjust the volume on the crab box to reduce distortion. Use pulpit volume controls to adjust the sound level in the chapel. 


Test Your Audio

Test the same type of audio that you will use during the actual event. If the meeting will include a musical number, a loud talker, a soft talker, a choir singing, and a violin solo, for example, test each of these audio scenarios before the event. During the test event and pre-buffer time of the actual event, we recommend testing audio levels at all receiving location(s).


Manage Your Event

Once the webcast begins, it becomes more challenging to adjust audio levels because of the delay between the broadcast and receiving sites.  If audio needs to be adjusted during the event, the receiving location won’t hear the adjustment for thirty seconds to four minutes. Running the audio through a separate audio mixer before it reaches the broadcast device will provide the most flexibility for adjusting audio levels.

If the audio level is acceptable at some but not all viewing locations, try adjusting the audio at the receiving locations having an issue. Below are methods for making adjustments to receiving site audio during a live event:

  • If receiving in a chapel, try adjusting audio using the volume controls located near the podium.
  • Adjust the volume levels on the receiving computer or device.
  • If using a multi-adapter input device (crab box), use the volume knob for immediate adjustments. 
  • Use an audio mixer at the receiving locations for even greater control over volume levels.

Music Tips

During webcasts, be prepared to turn up the volume at receiving locations during musical numbers.  When the musical number is over, the volume must be turned back down for the next person who will be speaking.  Turning the volume up for music at the receiving locations should not cause feedback.

Note:  Some newer and recently upgraded stake centers may have additional “choir” microphones on the rostrum as well as discrete organ and chapel audio outputs that can be routed into an audio mixer at the broadcast location during a webcast to achieve a proper mix of these discrete signals.

Learn more about controlling audio levels when using an audio mixer.

 

For additional support, contact the Global Service Center (GSC).