Black Lion Audio PBR TT Owner's Manual

SIGNAL FLOW IN YOUR TT PATCHBAY

The flow of signal through a patchbay module is affected by
both physical connections and mode setting (Normalled, Non-
normalled, or Half-Normalled.) The most common configuration
for a patchbay is for signals to come in to the patchbay from the top
rear connections, and out of the patchbay from the bottom rear
Connections. Conversely, on the front of the patchbay, the top row
connections are outputs and the bottom row connections are inputs.
With jacks connected to the top rear and bottom rear of
a single patchbay module, signals coming into a top rear
connection are passed directly through to the output on the
bottom rear, as shown here. This connection style should
be used for your hardware' s "default" configuration - the way
you want your signals to flow on a day-to-day basis.
When no jacks are connected to the top connections of a module, a
signal from the front bottom input is passed through to the rear bottom
output.
When all four jacks are connected to a patchbay module, a signal
connected to a rear top input of the patchbay is passed to the front top
output, while signal from the front bottom input is passed to the rear
bottom output.

NORMALLED OPERATION

When a module is set to Normalled and connections are made to the
top rear and top front jacks, the signal is passed through from the
top rear to the top front - breaking the connection shown in figure 1.
A Normalled configuration allows you to run several devices in series by
using patch cables on the front of the patchbay to interconnect several
of your devices. For example, you could run a signal from a preamp, to a
compressor, and finally to a reverb. A cable inserted into the bottom
rear will have its connection broken when a cable is inserted into the
top front.

HALF-NORMALLED OPERATION

When a module is set to Half-Normalled and connections are made to
the rear top, rear bottom, and front top jacks, the signal is passed
through from the top rear to the top front - without breaking the
connection shown in figure 1.
This allows you to use the patchbay as a mult (splitter), sending the
signal coming into the patchbay to two different destinations; very
useful for parallel processing of your signal and monitoring
applications. Inserting a cable in to the front bottom jack of a
half-normalled module will break the connection between the rear
jacks.

NON-NORMALLED OPERATION

Fig. 1
AKA "open." In non-normalled configuration, the top and bottom
rows of jacks are not connected at all. Modules set to non-normalled
operation will pass signal straight through from front-to-back
or back-to-front, but not vertically. Useful for setups where you
do not want your devices to automatically route anywhere.

ON PHANTOM POWER

We advise against running phantom power through your patchbay,
as this makes it possible to send phantom power to a device
not designed to handle it; expensive damage could result!

DB25 WIRING CONVENTION

Fig. 2
The PBR TT Patchbay uses the Tascam DB25 wiring convention.
Some audio equipment uses the Yamaha convention. Check the
documentation for your other DB25 hardware to ensure compatibility.
NOTICE
This manual provides general information, preparation for use, installation and oper-
ating instructions for the Black Lion Audio PBR-Series Patchbays.
The information contained in this manual is subject to change without notice. Black
Lion Audio makes no warranties of any kind with regard to this manual, including, but
not limited to, the implied warranties of merchantability and fitness for a particular
purpose. Black Lion Audio shall not be liable for errors contained herein or direct, indi-
rect, special, incidental, or consequential damages in connection with the furnishing,
performance, or use of this material.
Fig. 3
©2023 Black Lion Audio. The Black Lion Audio 'Lion Face' logo, BLA, are trademarks
or registered trademarks of Black Lion Audio.
This manual and any associated intellectual property are subject to
copyright protection. No part of this document may be reproduced in
any form without explicit written consent from Black Lion Audio.
Fig. 4
PBR TT
Patchbay
Fig. 5
Owner's Manual