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223/223XL - 234/234XL
234/234XL-223/223XL REAR
PANEL OPERATIONS
MODE SWITCHES
234XL REAR PANEL
234 REAR PANEL
The mode switches on the back panel of the unit are used to select one
of the three modes of operation in the 234/234XL and one of two modes
of operation in the 223/223XL. There could be disastrous consequences
if the crossover were improperly setup or the switches were mistakenly
pushed during the regular operation of a sound system. Therefore great
care should be taken when setting these switches. There is a mode dia-
gram on the back panel to help you understand at a glance how this is
done. The following steps should be taken in setting up your system:
• Know the loudspeaker manufacturer’s requirements regarding the
amplification needs of your particular speaker system. Follow the
maunfacturer’s guidelines carefully, as dbx is not responsible for dam-
age relating to improper setup or implementation of the 234/234XL-
223/223XL.
• Without any audio or power connections in place, use the back panel
switches on the crossover to set it to the proper mode of operation;
either stereo 2-way, stereo 3-way, or mono 4-way for the 234/234XL,
or stereo 2-way or mono 3-way for the 223/223XL.
• Use the literature that came with your speaker system to properly set
up the mode of operation and crossover frequencies to the manufac-
turer’s specifications.
• There is one of the four possible mode button combinations for the
234/234XL which is marked “not valid”. Be sure you have not select-
ed this combination as the 234/234XL will not operate correctly in this
mode.
When you are certain that the proper selections have been made, com-
plete the steps described below and in the “234/234XL-223/223XL Audio
Connections” section on page 7.
6
®
CHANNEL TWO
MODE
MID
HIGH-MID
x 1
x 10
HIGH
HIGH
LOW
NOT USED
INPUT
NOT USED
CHANNEL ONE
HIGHLOW/MID
NOT USEDHIGH
STEREO 3-WAY
MONO 4-WAY
STEREO 2-WAY
LOW INPUTLOW/HIGH
NOT USEDNOT USED
MID
LOW-MID
LOW/MID
LOW/LOW-MID
x 1
x 10
STEREO 3-WAY
STEREO 2-WAY
MONO 4-WAY
NOT VALID
LOW/LF SUM
LOW
INPUT
HIGH NOT USED LOW/HIGHLOW/LF SUM INPUT
INPUT
LF SUM
LOW SUM
LOW SUM
NORMAL
SUMMED
ONLY
A HARMAN INTERNATIONAL
COMPANY
SALT LAKE CITY, UTAH
MADE IN USA
MODEL 234
®
PROFESSIONAL PRODUCTS
XOVER FREQ XOVER FREQ
15 WATTS
100V 50/60Hz
120V 60Hz