3
READ BEFORE USING
Before starting to use the crossover in your sound system there is some information you should know and procedures you
should follow.
The XO 202 and XO 203 are fourth order Linkwitz-Riley electronic crossovers.
These units can be used both in stereo and in mono modes, allowing the following configurations:
XO 202
XO 203
STEREO MODE
2-WAY
3-WAY
MONO MODE
3-WAY
4-WAY
Stereo an mono modes can be easily set by pushing a switch and connecting Inputs and Ouputs properly: no patch cords
required.
Inputs & Outputs
All inputs and outputs are floating and balanced when connected (via a tip, ring, ...) to other floating and balanced equip-
ment. Any combination of balanced and unbalanced operation is permitted (see also “Connection Cables”).
CD Boost
The Constant Directivity horn equalization circuit is to be used with horns that require a high frequency boost. The provided
boost is +3dB @ 3.5kHz rising 6dB per octave to 22.5kHz.
Consult your horn manufacturer to determine whether it is needed in your circumstance.
No changes need to be made to operate without the constant directivity boost.
If the constant directivity equalization circuit is desired on a particular channel then depress the corresponding switch
labeled “CD BOOST”. There is one switch for each channel located near to the input socket. If two or more channels are ganged
together, then use only the switch near to the used input socket (the switch near to the unused input socket has no effect on the
circuit when ganged).
Clip LED
This LED will light when output capability is being exceeded with clipping distortion. Occasional flickering of the Clip LED is
acceptable, but if it remains on continuously you should turn down the level control or reduce the output level of the preceding
component to avoid audible distortion.
Range x1 & x10
(XO 202 only)
This switch sets the cut off frequency adjusted by the LOW-HIGH Crossover frequency knob as follows:
OFF
: Frequency x1 =
80Hz
-
920Hz
ON
: Frequency x10
=
800Hz
-
9200Hz
CAUTION: to prevent transients and possible equipment damage, never change the frequency range switch from the x1
position to x10 (or vice versa) with the crossover output levels passing signal.
LOW, MID & HIGH Phase Inversion
The Phase switches invert the phase between the speakers. Use them when you feel a bad sound continuity between the
LOW, MID and HIGH ranges.
LOW Summing
(for qualified personnel and/or advanced users only)
The XO 202 and XO 203 are designed to sum alI or any of the LOW outputs if desired.
The shorting connector “CN4” must be removed from the channels being summed and should, for best results, be in place
when no summing is desired. Shorting connector “CH4” is located nearly in the center at the two pieces board. You can easily find
it while the top plate opened.
Getting Started
Getting Started
