XTZ SUB 12.17, Owner'S Manual

13

Connections & controls

RCA Line Input

(LFE), L & R

LFE & Unbalanced RCA inputs for left and right channel. Choose the left one when 

using LFE signal. The left and right inputs are a sum, providing bass for both channels.

XLR Balanced

This is a balanced version of the LFE signal

XLR Pass Through

This works as a pass through for the XLR balanced signal, this makes it possible 

to connect several subs with one signal from the source.

Program Port

This is a direct access to the programmable parts of the amplifier. Bare in mind this 

is not for consumers, the program port is meant to be used by XTZ employees only.

CROSSOVER

  40 to 160 Hz

This control allows you to adjust the upper limit of the subwoofer’s frequency 

response from 40 to 160 Hz.  The subwoofer’s output level will be reduced above 

the frequency this control is set to. You should set the crossover frequency to 

obtain a smooth and seamless transition from the subwoofer to the main speakers 

in your system. If your main speakers are smaller units with limited low frequency 

output, start with a higher frequency (such as 100-150 Hz). With larger speakers 

that have greater low frequency output, you might start with this control set lower 

(such as 60-100 Hz). 

PHASE

0° - 180° 

(set to 0° if using 

a surround processor)

This control allows you to alter the phase of the subwoofer’s output signal ,  0° 

- 180° to correct for a possible mismatch and resulting cancellation between the 

subwoofer and your main speakers/amplifier.  To adjust, listen to the system with 

music playing and tune between   0° and 180°  and listen for a change in mid-bass 

output. The correct position will have a higher amount of apparent mid-bass output.

VOLUME 

(set to pointing upwards/12 

o’clock if using a surround 

processor)

This control allows you to adjust the output level of the subwoofer to match the 

main speakers in your system. For most home theater receivers & surround sound 

processors, set the volume control to pointing upwards / 12 o’clock position. For 

music systems, start with the volume control at a low setting and proceed slowly 

from there until the levels match. The use of test tones (from a receiver/processor’s 

built in calibration function or test disc) and SPL meter are suggested for proper 

level matching of all speakers.

Low Pass Switch

The low pass filter cuts away high frequencies at a certain point and over, the 

frequency point is set by the crossover variable. We recommend that when using LFE 

signal to turn the low pass filter off, as most receivers are handling filters internally. 

EQ Setting Switch 

This switch allows you to choose between the three different EQ settings.

REF, EQ1 & EQ 2 are explained in the “SUB EQ” section, found on previous page.

Power

AUTO/Always ON

With this function in the “AUTO” position, your subwoofer  can be safely left with the 

main power switch on continuously. The subwoofer will turn itself on automatically 

when an audio signal is present.  If no signal is present for approximately 

1 hour

, 

the unit will switch to standby mode (indicated by red power LED color). While in 

standby mode, your subwoofer will only need minimal power.  This function can be 

disabled by setting this switch to the “OFF” position.