These demo discs provide a collection of both movies and music with excellent fidelity, thanks to their uncompressed dts-HD Master Audio format. Internal Construction Subwoofers are heavy for several reasons, many of which are due to hefty construction, massive drivers and amplifiers with large magnetics. Building on the highly regarded Digital Drive subwoofer series, Velodyne has recently introduced the new Digital Drive Plus series that includes 10″, 12″, 15″ and 18″ models. Line level and speaker level controls are provided to optimize the analog input settings. The most I can say is that sometimes equalized string bass seemed a bit more “rounded,” but it was very close. Dedicated buttons allow the user to select listening preset Theater , Rock , Jazz , Games , Custom , Defeat , night mode, volume level, adjust and reset the subwoofer when connected to a display.
Setup Setting up the DD is quite a bit more complicated than setting up an ordinary subwoofer, which is likely to have no more than a couple of knobs for setting volume and crossover frequency, plus a switch for polarity reversal. The setup and calibration procedure resulted in a frequency response that was quite linear at the microphone position, but the DD’s manual points out that making the subwoofer sound right to you may involve increasing the subwoofer volume beyond flat response, even after the major peaks and valleys have been eliminated by the parametric EQ. The lower board has the line-level audio circuitry that is separated from the power supply to help prevent switching noise from affecting the sound quality. Create new account Request new password. The company pioneered the servo-controlled subwoofers, which have significantly lower distortion than conventional designs. Log in or register to post comments. The two controls on the panel use encoders rather than traditional potentiometers, so there is no worry about these getting scratchy later in life.
Blu-ray Courtesy of Universal Studios, Despicable Me provides the audience with a reference quality audio and video experience. The really fun part comes with the parametric equalizers. Setup Setting up the DD is quite a bit more complicated than setting up an ordinary subwoofer, which is likely to have no more than a couple of knobs for setting volume and crossover frequency, plus a switch for polarity reversal.
Analog equalization can be useful, but only to a limited degree. Company Information Velodyne Acoustics, Inc. Line level and speaker level controls are provided to optimize the analog input settings. The nice part about using the PC software is you can see the adjustments being made real-time with the filter settings and frequency response graphs updating.
Once the Auto-EQ or Self-EQ has been run and saved into memory, the user must hold this button down for al least 5-seconds to prevent accidentally over-writing a previous optimization. Users have the option of saving the parameters upon exiting. Review at a glance.
Our listening room walls are covered with Echo Buster sound absorption panels to help eliminate slap echo and significantly reduce the RT 60 time in the room. The Subwoofer Placement Recommendation Guide provides guidance and detailed recommendations on setting up one or more subwoofers in the room.
Velodyne Digital Drive Series DD Subwoofer –
Switching to the Test screen allows you to see the effect of the equalization. For music, I preferred a setting of 8, and for movies, I preferred a dd-112 of. The lower board has the line-level audio circuitry that is separated from the power supply to help prevent switching noise from affecting the sound quality.
A sixth preset defeats the EQ.
Velodyne Acoustics DD-12 Subwoofers
The aggressive multi-channel surround mix with naturally sounding deep bass creates a convincing presentation without sounding artificial. The internal cavity of the subwoofer is filled with acoustic fibre to further improve sound quality. Its digital calibration and setup options allow the DD to perform well in rooms where subwoofers without this sort of technology are unable to realize their potential. In general, cutting a peak is fine, but boosting the response to compensate for a dip may not be a good idea—dips are often highly position-dependent, and boosting eubwoofer output at a specific frequency may place too much stress on the subwoofer driver.
The initial Test sinewave sweep, with the DD’s volume at “0,” showed that the response of my main speakers began to decline at about 80Hz to a plateau between 63 and 50, and then a steady decline below that. According to Velodyne, the solution is seires signal processing. Dialing In the Performance My home theater room allows very little flexibility in subwoofer velldyne The Night Mode is also adjustable in this panel. I drice then select these only as the program material required it.
The servo loop is closed around the cone position and incoming audio signal, resulting in a tight and accurate low frequency response.
Manual options are available for those who want full control of their subwoofer settings. Dedicated buttons allow the user to select listening preset TheaterRockRdiveGamesCustomDefeatnight mode, volume level, adjust and reset the subwoofer when connected to a display. This is not all that surprising, given that the measured frequency response before EQ was already pretty flat. To help users get started, Velodyne provides a Quick Start Guide to help make installation and setup easier.
Velodyne also provides an IR input when line-of-sight with the IR remote is not possible. After looking at the PC-based software, it de-12 clear why Velodyne recommends using this over their built-in, low-resolution video interface. The idea is that, having looked at the peaks and dips in the unequalized frequency response, you move one of the parametric EQs to match the peak or dip, and decrease velidyne increase the response at that frequency.
All of this is done in the digital domain: Krell Theater 7 Amplifier Review. This is probably the trickiest aspect of the setup procedure, because there are no set rules for adjusting these parameters; it’s all a matter of try-it-and-see, and effects on the system frequency response are unpredictable.
No Shortage of Blu-ray Players…Yet. In the Digital Drive series of subwoofers which range from the DD to the DD, the number indicating the diameter of the driver in inchesthe response of the subwoofer is measured using a supplied microphone, and various parameters can be adjusted to match the subwoofer to the main speakers and equalize the response of the subwoofer to produce the best sound at the listening position.
Velodyne Acoustics DD 12 Subwoofers user reviews : out of 5 – 3 reviews –
The company pioneered the servo-controlled subwoofers, which have significantly lower distortion than conventional designs. I have listened to this band live in Los Angeles and their music was certainly engaging.
The massive magnet structure creates a huge B-field that is likely to cause problems for older CRTs. JL Audio e Subwoofer. Sound effects that pan across the room are delivered seamlessly with pinpoint accuracy and deep bass reproduction.
Velodyne recommends the Windows option since users can see the parametric filter curves and save optimization settings to files on their computer.
The dts trailers that are provided on these demo discs capture movie highlights and provide superb sound quality. These demo discs provide a collection of both movies and music with excellent fidelity, thanks to their uncompressed dts-HD Master Audio format. Sonos Amp Streaming Amplifier Review.
You now have the system’s frequency response in this range without the subwoofer remember, the sub’s volume is set to zero at this point.