Axis Network Horn Tested (C3003-E)

Published Apr 18, 2017 17:38 PM

We bought and tested the Axis network horn C3003-E, examining setup and calibration, event audio, VMS integration, and sound pressure levels (tested with a dB meter, shown below) at ranges up to 100'. 

axis network horn tested~1 

Summary

In our tests, the Axis horn worked well, adding to VMSes tested (Avigilon, Exacq, Genetec, Milestone) without issue, with two way audio working with no problems. However, only Milestone XProtect was able to trigger audio clips using virtual triggers, limiting its usefulness in other VMSes without additional integration (Axis Camera Station integrates these functions as well).

Sound levels were loud in our tests, sufficient to deliver messages at ~100' distance over nearby road traffic, and extremely loud at close range (>110 dB). 

Those without audio expertise may find it especially attractive, as it removes the need to purchase and integrate multiple components, albeit at a moderate (~$100+) cost premium.

Those experienced in adding audio to surveillance systems are less likely to prefer the C3003-E, as other off the shelf components may be installed for a lesser cost. However, the reduced installation complexity and simple VMS integration may still be attractive. 

Pricing

The C3003-E sells online for ~$430 USD. This pricing is significantly higher than typical horn speakers, such as the Bogen SPT15A or Atlas AP-15, both ~$80. However, the C3003-E eliminates the need for a separate amplifier (~$50-100+) and triggerable MP3 player (~$100+), as well as the time required to integrate these separate components (likely 2-3 hours). 

Physical Overview

The C3003-E is physically similar to typical paging horns, with the most noticeable difference being its RJ45 jack instead of terminals for speaker level audio. The horn also has a built in microphone, though it is not visible. 

We review the construction of the C3003-E in this video:

Audio Configuration

The horn may be configured for either simplex (speaker only) or duplex operation (bidirectional speaker/mic) depending on how it is to be used.

Once installed, users must calibrate and test the unit, which is automatic and takes ~10 seconds. This self test measures the speaker's output by using the built in microphone, to ensure output levels are as expected.

We review the web interface of the C3003-E and configuration in this video:

VMS Compatibility 

The C3003-E added easily to Avigilon Control Center, ExacqVision, Genetec Security Desk, and Milestone XProtect. The horn added similarly to a camera in all VMSes tested, with audio inputs/outputs automatically added, shown here in Genetec:

Of these third party VMSes, only Milestone supports the horn's virtual inputs, allowing users to trigger specific sounds/notifications (see below) from XProtect. These inputs are shown here in Milestone's Configuration Manager. Note that Axis' own Camera Station VMS integrates these functions as well.

Once added to a VMS, users may use client two way audio controls to address subjects, similar to using camera audio. See our Audio for Surveillance Systems Tutorial for more information on how VMSes/cameras integrate audio.

Event Rules

The camera ships with a number of audio clips preloaded, including emergency and trespassing notifications, camera shutter, and barking dog sounds. Additional clips may be uploaded (mp3 format), as well.

These clips may be manually triggered via virtual inputs (using an integrated VMS or CGI string) or used in conjunction with camera VMD/analytic/other events. Additionally, clips may be scheduled to trigger at specific times each day 

Sound Output

We tested the effective volume of the C3003-E outside, using an SPL meter to test decibel levels at 10', 20', 30', and 50'.

The horn was loud. Users should be careful to adjust output gain to the maximum necessary for their scene, as levels at close range are loud enough to damage hearing in under a minute. Additionally, overly loud messages may cause neighbor complaints or even lead to fines in some municipalities. 

At 10' distance using maximum output gain (+6), test clips were ~110 dB, about as loud as a jackhammer (loud enough to cause hearing damage). Even at 50', clips were still intelligible and over 90dB (roughly similar to operating power tools without hearing protection). 

We review some audio samples and dB meter use here (recorded using -14dB output gain):

Test Parameters 

The Axis C3003-E was tested using 1.25.2.1 firmware.

VMS versions used:

  • Avigilon Control Center Standard 5.10.8.2
  • ExacqVision Enterprise 8.4.2.111542
  • Genetec Security Center Enterprise 5.5.670.1080
  • Milestone XProtect Corporate 11.1a
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