User Manual

UAD Powered Plug-Ins - 254 - Helios Type 69 Equalizer
Helios Type 69 Controls
Overview The simple yet powerful Helios Type 69 Passive EQ adds a unique sonic tex-
ture to the music that passes through it. It can be pushed to its most extreme
boost settings while retaining openness and clarity. The Type 69 Passive EQ
replicates all the controls of the original hardware. The Treble band is a fixed
10 kHz shelf EQ, while the Bass band functions as a stepped 50 Hz shelf filter
(-3,-6,-9,-12,-15 dB) or frequency selectable Peak EQ (60, 100, 200, 300
Hz). The Mid band operates as a frequency selectable Peak or Trough
(Notch) EQ with eight frequencies (.7, 1, 1.4, 2, 2.8, 3.5, 4.5, 6 kHz). Other
features include Level Adjust, EQ Cut (bypassing the EQ circuit while retain-
ing the native sound of the unit), and Phase Reverse.
Band Layout
The Helios Type 69 design works in such a way that (depending on the set-
tings) entire EQ circuits are switched in and out. In the hardware that often
meant audible popping. For the plug-in we use smoothing to reduce these au-
dio spikes, but they may be more audible than with other UAD plug-ins. This
is most audible when engaging the Bass or 10 kHz band from OFF to any fre-
quency.
Each feature of the UAD Helios 69 interface is detailed below.
Figure 100. Helios Type 69 band control layout
Bass
band
Midrange
band
Treble
band
Global
controls