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SUBWOOFER MODE (DCA-1300 & DCA-2000 only):

This mode sends low frequencies to your speakers without the use of an external cross-

over. The subwoofer operation can be operated in stereo, parallel mono or mono bridge modes. Change the different operating modes by flipping the mode
switch on the rear of the unit to your desired operating mode. Also, set the subwoofer mode switch to the “SUBWOOF” position. Use the frequency selector
to adjust the subwoofer output frequency from 20Hz to 200Hz. The different subwoofer modes are listed as follows:

BRIDGE SUBWOOFER -

This operation allows you to get the most possible power out of your amplifier for the sole purpose of running a high powered

subwoofer loudspeaker in mono. To avoid amplifier overheating, never run the amplifier below 4 ohms in this mode. In this mode you may use the frequency
adjustment on the rear of the amplifier, to control the frequency output level. Frequencies may be adjusted from 20Hz to 200Hz. Page 12/Figure20 details a
typical Bridge Subwoofer set-up.

STEREO SUBWOOFER -

This operation is similar to the Bridge Subwoofer operation but in stereo. This operation allows you to run several subwoofers

down to a minimum of 2 ohms. To avoid amplifier overheating, never run the amplifier below 2 ohms in this mode. Set up this mode as you would a standard
Stereo set-up. Be sure both channels are set to “SUBWOOF”. In this mode you may use the frequency adjustment on the rear of the amplifier, to control the
bass frequency output level. Frequencies may be adjusted from 20Hz to 200Hz. Page 13/Figure 21 details a typical Stereo Subwoofer set-up.

PARALLEL MONO SUBWOOFER (DCA-2000 only)-

This operation is similar to the Stereo Subwoofer operation but in mono. When running subwoofers, it

is usually recommended to run them in mono mode to achieve a cleaner tighter low end. This operation allows you to run several subwoofers down to a
minimum of 2 ohms. To avoid amplifier overheating, never run the amplifier below 2 ohms in this mode. Set up this mode as you would a standard Stereo
set-up. Be sure both channels are set to “SUBWOOF” and the mode switch is set to “Mono”. In this mode you may use the frequency adjustment on the rear
of the amplifier, to control the bass frequency output level. Frequencies may be adjusted from 20Hz to 200Hz.

ONE CHANNEL NORMAL / ONE CHANNEL SUBWOOFER (BI-AMP) -

You may also use your amplifier to bi-amp your system. You may use one side of the

amplifier to power a subwoofer and the other side to power a full range speaker. Follow the set-up guides listed above to mix and match your operations.

page 12

UNiKA

DCA-900/DCA-1100/DCA-1300/DCA-2000

Do Not Use
CH-2 Input

CH-1 Input

Set to
Subwoof

Negative (-) Lead

Positive (+) Lead

DCA-2000 Rear Panel

Bridge Subwoofer Mode Speaker Set-Up

Figure 20

Use the two red terminal from the Binding Post to
power a subwoofer speaker in mono-bridge mode.