Hardware installation & connection
49
© 2019, ATEÏS, member of PAX ProAV Group
3.10
Loudspeakers
In a case of BTQ-VM8 controller, it has 8 speaker zone outputs (Z1 to Z8). Each zone output
consists of 2 redundant loudspeaker lines (line A and line B). Normally, the paging calls and BGM
are distributed to a zone over both loudspeaker lines. If one of the loudspeaker lines of a zone fails, it
is still possible to distribute the paging calls and BGM to the zone over the remaining loudspeaker
line.
3.11
VA-DLC dummy load capacitor module
When a number of speakers are installed with long wires, each sub zone (A/B) requires a dummy
load capacitor at the end of speaker line for speaker line surveillance based on impedance
measurement.
When branching speaker lines are connected to BTQ-VM4/VM8/SG8/SL8, Please install VA-
EOL end of line supervision board instead.
See the following how-to to install the VA-DLC.
1. The BOUTIQUE system will auto calculate the total speaker line load; therefore, do not connect
the wiring between the VA-DLC and BTQ-VM4/VM8/SG8/SL8 at this moment.
2. Proceed the Setup Wizard on front LCD panel of BTQ-VM4/8 or web browser, see
Net Setup > Step 5: Dummy Load Capacitor
, and it will automatically calculate the total speaker
line load (watt).
3. After completed the Step 5 of Setup Wizard, follow the recommended data for the DIP switch of
VA-DLC displayed on LCD panel of controller or web browser, and set ''ON'' position on the
corresponding DIP switch of VA-DLC.
4. Connect the wiring between the VA-DLC and BTQ-VM4/VM8/SG8/SL8.
5. Continue to proceed the Step 6 of Setup Wizard on LCD panel of controller or web browser, see
Setup Wizard > Net Setup > Step 6: Monitoring
to get monitor reference.
3.12
Multi-branch/3-wire
To monitor the long speaker lines, the VA-DLC dummy load capacitor can be added on the
BOUTIQUE PA/VA system to detect the open and short circuit of entire speaker line even the last
speaker. However, for advanced configuration such as installs the VAT volume attenuators in the
speaker line for volume control, the impedance of speaker line is changed after the volume
attenuators adjustment.Furthermore, for branching the speaker line wiring, a cut of partial branching
may not change the overall impedance that obviously. Therefore, the VA-EOL is the only solution
which can adapt the changing impedance and detect each branch.
