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8
223/223XL - 234/234XL
2-Way, 3-Way 4-Way Crossovers
crossover, as this may cause severe damage not covered under the dbx warranty. Connect the power cord to the crossover first, then to a power source that is properly grounded. Never lift the ground as a shock hazard may result. After you have safely plugged in the crossover, turn on the source device(s). Turn the amplifiers� outputs all the way down (-�) and turn on the amplifiers. All of the elements of your sound system should now be on, and the amplifiers should be turned all the way down. Turn the source device to its nominal operating level, sending a nominal (average) level to the 234/234XL-223/223XL. Slowly turn up the amplifiers� outputs until you can hear signal at a comfortable volume. Make adjustments as you desire.
FEATURES
If you are using your system in stereo 2-way or 3-way mode, the needed crossover frequency may be higher than 960 Hz, making it necessary to set the x10 switch to the active position. This changes the range of operation of the frequency selector from 45-960 Hz to 450 Hz to 9.6 kHz. All other frequency selectors remain the same. When using the X10 switch, ALWAYS ensure that the amplifiers feeding all speaker systems are turned off or that the input gain controls on the power amplifiers are turned down before changing the setting of the X10 switch. Not doing so may send a spurious signal to the outputs of the crossover when the X10 switch is engaged, and may damage speaker systems which are powered at the time of the spurious signal. Every output is equipped with a polarity (�) reverse switch on the front panel. When speakers are not �in phase�, the frequency response of the system is compromised, particularly in the low frequencies. Out of phase signals can also cause �comb-filtering� in the high frequencies. The polarity switch is extremely useful for fine tuning your sound system for peak performance. An LED is activated when the output polarity is reversed. The other feature accessed on the back panel is �low frequency summing�. This is useful with systems that utilize mono subwoofers. Activating the LF sum switch �sums� the low frequencies of both the left and right inputs. The sum is sent to channel one�s low output marked �LF SUM�, while channel two�s low output is not used, and channel two�s phase invert led is disabled, indicating it is not operational in �LF Sum� mode. The summed low frequencies represent all the low frequencies of both the left and right inputs, and since lows are generally non-directional LOW FREQUENCY SUMMING POLARITY SWITCH
X10
OPERATION
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