Rane THX 22 Operator's Manual
Manual-1
THX 22
STEREO EQUALIZER
WEAR PARTS: This product contains no wear parts.
THX is a registered trademark of Lucasfilm Ltd.
Dolby and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation
QUICK START
Great video is easy; great audio is hard, but an THX 22 makes it a lot easier. Read at least this boxed section and you’ll
be on your way toward great audio.
For a fully THX equalized system, use the THX 22 for surround channels in conjunction with the THX 44 equalizer for
the front channels. The THX 22 may be used to equalize the surrounds of any 5.1 channel system, or as a regular stereo
equalizer.
Hook-up is intuitive: In from the controller, out to the amplifiers. Just follow the silkscreened legends near the gold-
plated RCA jacks on the rear of the unit.
Familiarity with other graphic and parametric equalizers makes the THX 22 just as familiar. If this is your first equal-
izer, be gentle; it can overwhelm you.
Use the BYPASS switch as an aid in comparing equalized results with unequalized results. Pushbutton in and locked
(LED on) is the bypassed (unequalized) mode; pushbutton out (LED off) is the normal equalized mode. See the Operating
Instructions on the page Manual-4 for alignment information.
Install the supplied security cover after completing all settings. Be sure the POWER light fits snugly into the hole in the
security cover.
Never connect anything except an approved Rane power supply to the thing that looks like a red telephone jack on
the rear of the unit. This is an AC input and requires special attention if you do not have a power supply exactly like the
one originally packed with your unit. See the full explanation of the power supply requirements on page Manual-3.
THX 22 CONNECTION
When first connecting the THX 22 to other components,
leave the power supply for last. This gives you a chance to
correct mistakes before damaging fragile speakers, ears and
nerves. The THX 22 locates between the preamplifier/
processor and the amplifier.
INPUTS AND OUTPUTS
Connections are actively unbalanced and fitted with RCA
phono pin jacks. Use good quality cables and keep lengths as
short as possible. Longer length require balanced lines, using
an adaptor such as a Rane BB 44X Balance Buddy.
SIGNAL LEVELS
The THX 22 is designed for audio reference levels of
0 dBr (150 mV rms), and provides a minimum headroom of
34.5 dB above reference, making it virtually unclippable.
With all LEVEL controls located in their 0 dB detented
positions, the THX 22 operates with unity gain from Input to
Output. No additional gain settings are necessary. Use the
THX 22 only for specific equalization, not level control.
When connecting the THX 22 to a balanced source or
amplifier, use the Rane BB 44X to provide isolation, level
matching, balanced-to-unbalanced conversion and vice-versa.
OPERATORS MANUAL