Introduction
Overview
In some application environments, the built-in speaker of an intercom may not provide enough volume for the site. In these cases, an external amplifier or powered speaker can be added. Because the wiring points vary by model, this guide explains how to connect different intercom devices to an external amplifier or powered speaker.
Supported Models
Bi12, BHP-S0S16, BHP-S0S16V, BK-DAB-PA2, BK-DAB-PA2S, BK-DAB-PA3, BHP-SOS10, BHP-SOS10V, BHP-SOS10SD, BHP-SOS11V, BHP-SOS11V2
Required Devices and Tools
1. One Becke intercom device (BHP-S0S16V is used as the example in this document), one PoE switch or DC power supply, and one powered speaker. Connect the device to the switch.
2. One PC for setup and testing. Connect the PC to the same switch and make sure the PC and the device can communicate over the network.
Device and PC Connection Diagram
Connect the BHP-S0S16V to the switch, and connect the PC to the same switch. Make sure the network between the PC and the device is reachable. A typical connection example is shown in Figure 1.
Figure 1. Device and PC connection diagram
Intercom Connection Methods
Different intercom models use different wiring points for external powered speakers. The following sections explain the connection method for each model group.
Bi12 to Powered Speaker
For the Bi12, use the Audio_out interface to connect a powered speaker, as shown in Figure 2. The terminal on the left is the audio signal output, which should be connected to the audio input wire of the powered speaker through the terminal block. The terminal on the right is GND, which should be connected to the common ground terminal of the powered speaker.
Figure 2. Bi12 connection to a powered speaker
BHP-S0S16V to Powered Speaker
For the BHP-S0S16V, use the Line out interface to connect a powered speaker, as shown in Figure 3. The terminal on the right is the audio output and should be connected to the audio input wire of the powered speaker. The terminal on the left is GND and should be connected to the common ground terminal of the powered speaker.
Figure 3. BHP-S0S16V powered speaker wiring reference
An additional BHP-S0S16V wiring reference is shown in Figure 4.
Figure 4. Additional BHP-S0S16V powered speaker wiring reference
BHP-SOS10, BHP-SOS10V, BHP-SOS10SD, BHP-SOS11V, and BHP-SOS11V2 to Powered Speaker
For the BHP-SOS10, BHP-SOS10V, BHP-SOS10SD, BHP-SOS11V, and BHP-SOS11V2 series, the powered speaker wiring position is shown in Figure 5. The i10SV is used here as the example. The terminal on the right is the audio output and should be connected to the audio input wire of the powered speaker. The terminal on the left is GND and should be connected to the common ground terminal of the powered speaker. Figure 6 can also be used as a close-up wiring reference.
Figure 5. i10SV connection to a powered speaker
Figure 6. Close-up view of the BHP-SOS10V audio output port
BK-DAB-PA2 to Powered Speaker
For the BK-DAB-PA2, the wiring position for a powered speaker is shown in Figure 7. The HEADSET interface is used as the speaker audio signal output.
The HEADSET output is differential. If the connected device uses a differential input, connect HEADSET+, HEADSET-, and power GND (POWER-). If the connected device uses a single-ended input, connect HEADSET+ and power GND (POWER-).
Figure 7. BK-DAB-PA2 connection to a powered speaker
BK-DAB-PA2S to Powered Speaker
For the BK-DAB-PA2S, use the Line out interface to connect a powered speaker, as shown in Figure 8. The terminal on the right is the audio signal output and should be connected to the audio input wire of the powered speaker through the terminal block. The terminal on the left is GND and should be connected to the common ground terminal of the powered speaker.
Figure 8. BK-DAB-PA2S connection to a powered speaker
BK-DAB-PA3 to Powered Speaker
For the BK-DAB-PA3, use the Line out interface to connect a powered speaker, as shown in Figure 9. The audio signal output should be connected to the audio input wire of the powered speaker through the terminal block, and GND should be connected to the common ground terminal of the powered speaker.
Figure 9. BK-DAB-PA3 connection to a powered speaker
