Filter
Top Products
Appendix D: Important Subwoofer Information
49
.
www.velodyne.com
Digital Drive User’s Manual
Important Information Regarding your
Velodyne Digital Drive™ Series Subwoofer
(DD-15 and DD-18 only) and THX™ Ultra
2
THX Ultra
2
Presets for the Velodyne Digital Drive Series:
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
THX Certified Pre-Amp/Receivers:
If you have a THX Certified Pr
e-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 ar
e 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 Boundar
y Gain Contr
ol in the setup menu of the THX Ultra
2
Pr
e-Amp/Receiver to
compensate for any excessive bass heard in the room if you are close to a wall.
THX Certified Ultra
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 Theatr
e pr
oducts you pur
chase 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.