How to Retrofit an Outdated PA System to a Network PA System
When your PA system starts failing — dead speakers here, poor coverage there — the assumption is you have to replace the whole thing. Pull out the old wiring, buy all new equipment, schedule a big installation project. It sounds expensive, and it usually is.
But most facilities don’t actually need a full replacement to get a modern network PA system with Linortek Netbell IP paging devices. In most cases, you can keep whatever is still working and connect it directly into an IP audio network. You add new speakers only in the areas that need them. You can add all the new features as needed — scheduled announcements, live paging, zone control, emergency alerts, VoIP phone integration — all devices communicate over the network.
Here’s how it works.
The Bridge Between Old and New: Netbell-BT-105
The Netbell-BT-105 IP Audio Terminal is the device that makes this kind of upgrade simple – connect the Netbell-BT-105 LINE OUT to one of the audio inputs on your existing amplifier, then connect the Netbell-BT-105 to your network with a standard Ethernet cable. Once it’s in place, your old system will be a part of the network PA system – everything your old amplifier is already driving — all those legacy speakers — becomes one endpoint on the IP network. You can page to it, schedule announcements through it, and run it in parallel with new IP speakers covering the areas where coverage is missing.
Your existing speakers don’t require any modification. The BT-105 handles the conversion between the network audio signal and your amplifier’s line input. A connecting cable is included, so there’s nothing extra to source.
What You Can Add to a Network PA System
Once your existing speakers are bridged onto the network, adding new capabilities is straightforward because everything communicates over the same infrastructure.
A Netbell-MIC-608G IP call station lets staff make live announcements from any location — office, production floor, loading dock. For outdoor use at a gate or entry point, the Netbell-IN-608 IP intercom terminal is IP-65 rated for industrial environments and connects the same way as every other device on the network.
For schools replacing legacy controllers like Dukane systems, the Netbell-NTG-B tone generator takes over bell scheduling, fire drills, and pre-recorded emergency messaging. The Netbell-AU-711-SIP integrates your network PA system with an existing VoIP phone system. Netbell-CB-6206 IP call boxes in classrooms enable two-way communication with the main office. All of it connects to the same network — no proprietary wiring, no separate control systems.
For more options, please check the full Netbell network PA system component list.
Network Requirements
Your IT team will need to set up a VLAN for the IP audio devices. All Netbell IP speakers are PoE-powered — data and power over a single Cat5e or Cat6 cable, 30W per speaker. The BT-105 and call stations run on included 12VDC power supplies. All devices need to be on the same network to communicate with each other. Full installation requirements are at linortek.com/netbell-ip-paging-system-installation-guide/
Scheduling, zone configuration, and system management are all handled through a browser-based interface. No software installation, no coding required.
Is This the Right Approach for Your Facility?
If your existing amplifier is still functional, bridging it into a network PA system almost always makes more financial sense than a full replacement. You preserve the wiring and speakers you already have, avoid a large upfront project, and still end up with a modern system you can expand as your needs change.
If you share your amplifier model and describe the coverage gaps you’re dealing with, we can confirm compatibility and put together a quote — usually within a day.
Contact us for a free consultation or check Linortek Online Store for more options.
