Filter
Top Products
24
Crossover (Xover) Frequency:
The crossover divides the audio signal into two frequency bands, thereby restricting the amount of bass sent
to any speaker set to ‘Small’, and preventing midrange and treble from going to the subwoofer.
Using the buttons, choose a frequency between 25 Hz - 160 Hz suitable for the low frequency capability
of the speakers in your system. If you are using THX certified speakers, the crossover should be set to 80 Hz.
The subwoofer’s built-in crossover should be bypassed – be sure to set it to the highest frequency.
A crossover does not cut frequencies off like a cliff, but rolls them off according to a slope. If set to 80 Hz,
for example, your main speakers will still play lower frequencies – they just won’t have to play them as loudly.
This also lightens the load on the amplifier, leaving extra power for mid and high frequencies. Setting the
crossover to the lowest number on your speaker’s specification page is unlikely to provide the best result.
LFE is redirected only when Subwoofer is set to ‘No’. If set to ‘Yes’ or ‘Super’, the Movie configuration
XOVER FREQ should not be set much lower than 80 Hz, otherwise some LFE information will be lost.
Bass response is highly dependent on room acoustics, and experimentation with subwoofer placement is
recommended – start by temporarily placing the subwoofer in the listening area, play some music with a
range of bass and walk around the room. Locations where bass sounds even, without certain notes being
much louder than others, are usually good spots for placing the subwoofer if decor allows.
Advanced Settings – Crossover Frequency:
When ‘ADV SETTINGS’ is set to ‘On’, each speaker type can be set to a Crossover Frequency that best suits
its low frequency characteristics and room acoustics. For example, if placing a speaker against a wall
reinforces the bass making it excessive, the Advanced Crossover can be used to roll off the excess bass.
If room acoustics cause response to drop in the crossover region, the Subwoofer channel can be set to
overlap other channels to compensate, for instance setting SUB/LFE XOVER to 90 Hz and FRONTS XOVER to
70 Hz. In the opposite situation, if there is a bass peak in the crossover region, you can spread settings to
flatten response, for example SUB/LFE XOVER to 70 Hz and FRONTS XOVER to 90 Hz.
A very low setting, such as 25 Hz, may be used to protect full-range speakers from potentially harmful
signals. Scrolling below 25 Hz or above 160 Hz brings the ‘Off’ setting, which bypasses the crossover.
Advanced Settings – Subwoofer Phase and Polarity:
Room acoustics vary. If you have the flexibility, experiment with subwoofer placement to determine where it
sounds best in your system, providing deep, tight, and well defined bass. Certain subwoofer positions may
cause bass frequency cancellation – when your front speakers and subwoofer are “out-of-phase”, they
work against each other, resulting in weak and dislocated sounding bass. This can be corrected by adjusting
Subwoofer Phase and Polarity.
If your subwoofer has these controls, set them to zero/normal before making menu adjustments. The
advantage of adjusting through the Setup Menu instead is that you can do this from the listening position.
As a general guide, set Polarity to ‘Normal’ if the subwoofer is placed close to the front speakers, and to
‘Inverted’ if the subwoofer is located behind the listening area or toward the back of the room. With bass
material playing, switch Polarity back and forth from ‘Normal’ to ‘Inverted’ – leave it in the position where
bass is louder and more solid sounding.
Subwoofer Phase allows you to take things a step further and fine tune the phase alignment of the subwoofer
to your front speakers. Again, adjust Phase for the least amount of cancellation by listening for loudest and
most solid bass. Alternatively, listen to the ‘shhhh’ noise created between FM radio stations, and adjust
Phase until you find the most natural sounding transition between your main speakers and subwoofer.
Advanced Settings – Bypass LFE Crossover:
If you have set SUB/LFE XOVER to much lower than 80 Hz, the upper portion of the LFE signal will be lost.
With BYPASS LFE XOVER set to ‘Yes’, LFE goes to the subwoofer without going through the crossover,
preventing loss of LFE information. This also applies to the 6-Ch input’s SUB input (effectively, an LFE input).
3. SETUP MENU continued …