XTZ SA-1 - Page 15

15
Port Tuning
As a part of XTZ room tuning concept, our subwoofers are often supplied with two ports and foam
plugs. By using the supplied foam plugs in the bass reex ports, you can alter the lower boundary
frequency of the subwoofer. This makes it possible to alter the sound characteristics of the subwoofer.
The picture below shows four settings:
Tuning - High freq.
With no plugs in the ports the subwoofer will provide a “quick” and “punchy” bass character. It has increased
output higher up in frequency.
Tuning - Mid freq.
If the left port is blocked and the right port is open, this will provide a bass with an increased output in the
mid region.
Tuning - Low freq.
If the right port is blocked and the left port is open, this will provide a deep bass with an increased output in
the lower frequencies.
Closed
With both ports blocked this
closed box will provide a dry
and controlled bass character.
Parametric EQ
(PEQ)
The SA-1 subwoofer amplier has a built in parametric equalizer. A parametric equalizer (PEQ) is an adjustable
lter and a very powerful tool where the user can target and compensate for issues with room modes and
nodes that are unique for every listening area. To use this function in the best way, we recommend using a
measuring equipment like the “XTZ Room Analyzer II Pro” to see how the listening area is performing. Start
by Real Time Analysis (RTA) measuring (at ear height) a couple of di󰀨erent places in your listening spot, to
see if a certain frequency range have a repeating pattern e.g. a “dip” or “peak”. Set the PEQ to On, then set
the gain to either +9 or -9 to see what frequency is targeted. Trim the frequency to the correct spot and adjust
the gain to balance out a dip or a peak.
On / Off
At the “On” position the PEQ lter is active (If it does not show in the measurement, Check that the Gain
potentiometer is set to a value greater or lesser than 0dB)
At the “O󰀨” position the PEQ lter is bypassed and doest not inuence the signal in any way.
Parametric EQ
Frequency
The frequency potentiometer allows the user to target the frequency area that need to be tuned.
Parametric EQ
Gain
The gain potentiometer allows the user to adjust the boost or decrease of the targeted frequency.