Velodyne Digital Drive 1812 Signature Edition - Manual (Page 55)

Appendix D: Important Subwoofer Information
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w w w . v e l o d y n e . c o m
Digital Drive User’s Manual
Important Information Regarding your
Velodyne Digital Drive™ Series Subwoofer
(DD-15 and DD-18 only) and THX™ Ultra
2
T H X U l t r a
2
P r e s e t s f o r t h e V e l o d y n e D i g i t a l D r i v e S e r i e s :
To set the DD-15 and DD-18 to meet THX Ultra
2
requirements, customize Preset 5 with the
following parameters:
Low Pass Crossover Frequency: OFF
Low Pass Crossover Slope: 6 dB per octave
Subsonic Frequency: 15Hz
Subsonic Slope: 24 dB per octave
Phase: User adjustable
Polarity: User adjustable
Volume: 25
Contour Frequency: Default
Contour Level: 0.0
Theater/Music: 8
Night Mode Volume: Default in OFF position
T H X C e r t i f i e d P r e - A m p / R e c e i v e r s :
If you have a THX Certified Pre-Amp/Receiver, please connect the “(THX)” input on the back
panel of the DD-15/DD-18 to the ”Sub Out” connector of the THX Pre-Amp/Receiver. Also set
the DD-15/DD-18 to the THX Preset 5, set the system response of the subwoofer as per the
owners manual and then calibrate the THX Pre-Amp/Receiver. This ensures that the bass
management and calibrated levels are optimized for your system.
As this is a new THX Ultra
2
subwoofer, if your Pre-Amp/Receiver is THX Ultra
2
Certified, you
may use the Boundary Gain Control in the setup menu of the THX Ultra
2
Pre-Amp/Receiver to
compensate for any excessive bass heard in the room if you are close to a wall.
T H X C e r t i f i e d U l t r a
2
:
Before any home theatre component can be THX Ultra2 certified, it must pass a rigorous
series of quality and performance tests. Only then can a product feature the THX Ultra
2
logo,
which is your guarantee that the Home Theatre products you purchase will give you superb
performance for many years to come. THX Ultra
2
requirements cover every aspect of the
performance of the product including power output, frequency response, distortion, etc.