System Example D: Connecting stageboxes to a Live console over Blacklight II
Note: When using up to 128 inputs (4 MADI ports), compatibility across both 96 and 48 kHz sample rate operation can be maximised by attaching stageboxes/MADI devices to odd numbered BLII Concentrator ports.
This reduces the requirement to physically re-patch MADI connections and re-route inputs, as the redundant connection scheme will still be valid when even numbered ports are deactivated for 48 kHz operation.
- Set the Live console's clock source to Internal (Int), as described in the main Clocking section.
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Connect each stagebox MADI port Out & In to an 'A' MADI port on the back of the
Blacklight II.MADI Concentrator unit using a pair of 75 Ω BNC coax cables (max 75 m, conforming to spec defined in the Installation Guide).
-
If a redundant MADI connection is required, connect each stagebox MADI port 2 Out & In to the corresponding
'B' MADI port on the Blacklight II Concentrator (e.g. stagebox ports 1 & 2
to ports A1 & B1 respectively). Note different connection points for 8- and 16-port Blacklight Concentrators:
If an 8-port version of the BLII Concentrator is being used (one row of 8 MADI ports on rear), turn on Redundancy Status for the relevant pair of MADI ports in the console's I/O page
(Menu > Setup > I/O) under the BL II column (the ports shown correspond to the physical MADI ports on the rear of the Concentrator unit).
MADI connections on the 16-port version of the BLII Concentrator are always redundant so manual enabling of redundant mode in software is not required.
- Ensure each stagebox is set to clock from MADI, as described in the main Clocking section.
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Connect Blacklight Concentrator port A Main (and A Backup if a redundant Blacklight connection is required) to Blacklight port
1a (and 1b if connecting redundantly) on the (Master) console. Console Blacklight ports
2a and 2b may be used for connecting to a second Blacklight Concentrator unit.
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The console will clock the Blacklight Concentrator over the Blacklight connection, which in turn provides clock for each of the stagebox(es) over MADI.

The tables below summarise the connections required:
Blacklight II Connections |
Description |
A Main |
Connection to Master Live console |
} Redundant pair |
A Backup |
Backup connection to Master Live console |
System Examples
Setup: Clocking - System Example A: Connecting stageboxes to a Live console via MADI
Setup: Clocking - System Example B: Clocking the Live console from an external source
Setup: Clocking - System Example C: Connecting stageboxes to two Live consoles via MADI
Setup: Clocking - System Example D: Connecting stageboxes to a Live console over Blacklight II
Setup: Clocking - System Example E: Connecting stageboxes to two Live consoles over Blacklight II
Setup: Clocking - System Example F: Connecting stageboxes to three Live consoles
Setup: Clocking - System Example G: Daisy-chained stageboxes for 48 kHz operation
Useful Links
Clocking
Index and Glossary