Universal Audio Realtime Rack - Manual (Page 137)

Realtime Rack Manual Chapter 6: Using UAD Powered Plug-Ins 137
DSP Loading Information
• Each Realtime Rack hardware unit features four on-board SHARC DSP chips for
processing UAD Powered Plug-Ins.
• Multi-unit Realtime Rack systems use sophisticated load balancing routines. UAD
plug-ins are always allocated as efficiently as possible, which is not necessarily on
the DSP with the lowest resource usage.
• UAD DSP usage is proportional to the system sample rate. Therefore, more plug-
ins can be used simultaneously in a 44.1K session than in a 96K session.
• Bypassing individual components will conserve DSP on some UAD plug-ins. For
example, bypassing the compressor in the EX-1 when only the EQ is in use, and/or
bypassing any of the unused bands of the EX-1 EQ will use less UAD DSP (unless
DSP LoadLock is enabled).
• The UAD DSP resources required by each successive UAD Powered Plug-In in-
stance will slightly decrease.
• A chart showing expected plug-in counts can be found on our website:
uaudio.com/support/uad/compatibility/instance-chart.html
Operating Levels
Except as noted in the table below, the internal operating level of most UAD Powered
Plug-Ins is typically -18 dBFS. 0 dBFS is calibrated to +4 dBu with 18 dB of headroom,
so 0 dBFS is the equivalent of +22 dBu in the analog domain.
UAD Powered Plug-In Typical Internal Operating Level 0 dBFS Equivalent
Most –18 dBFS +22 dBu
Ampex ATR-102
Fairchild Tube Limiter Collection
Teletronix LA-2A Limiter Collection
Studer A800 –12 dBFS +16 dBu
Manley Massive Passive –14 dBFS +18 dBu
Neve 33609 (selectable) –14 dBFS
–18 dBFS
–22 dBFS +18 +dBu
+22 +dBu
+26 +dBu
UAD plug-in internal operating levels