Hsu Vtf-2 Mk3 Manual
Introduction Life for Hsu Research began in 1991 with the introduction of a 7 foot (!), tubular subwoofer that featured a 12” driver perched at one end. From that beginning, they’ve grown over the years under the guidance of MIT - educated Dr Poh Hsu, to offer a variety of products. Mostly well-engineered, high value-for-dollar subwoofers, they’ve recently entered into a new market area with the introduction of non-subwoofer speaker products, such as the HB-1 bookshelf speaker, HC-1 center channel speaker, the Ventriloquist VT-12 system and the diminutive VY-254. Today, we’ll be looking at the Hsu VTF-3 Mk3 subwoofer, sporting an updated version of the Class- A/B output, tracking power supply amplifier included with the system. First Impressions Right out of the box, it’s obvious the VTF-3 Mk3 is a no-nonsense, no-frills sub. Nothing more than the very most basic – that is, essential - controls, processing features and so forth are found on the unit. Nevertheless, we do see some hints as to what its performance capabilities are and where the real value of the sub lies.
Take, for example, the pair of 4” ducts (seen at right) found just above the amp’s control panel on the back of the sub. 3” ducts could have been used, but narrowing the diameter would have increased the air velocity within the ducts, (under normal operating conditions) in turn increasing the likelihood of wind noise. In terms of unwanted noise, the quieter a sub, the less it calls unwanted attention to itself, allowing one to better the enjoy the music listened to or the movie being watched. The gray disk seen in the photo, perched as it is between the two external ports, is the plug inserted into one of the ports when you want to switch from max.
Output mode to max. Extension mode. Hence the “VT” or “variable tuning” in the VTF-3 Mk3’s name. The finish, too, is a no-nonsense, no frills classic black look with a texture reminiscent of the black tolex often seen on pro audio gear. It’s pretty scuff-resistant and easy to clean. The black finish helps minimize the visual impact and being about the height of an average end table, the WAF is respected.
Setup Hsu Research wants their products to arrive intact! They’ve taken the carton-within-a-carton approach and you’ll find instructions on just how to unpack the unit pre-placed along the way. Once unpacked, you’ll have quite a collection of packing material (as seen at right) that you’ll probably want to hold onto. You’ll also have before you, of course, the VTF-3 Mk3, instruction sheet & manual, along with the sub’s power cord. Time to get busy setting the thing up!
Series Subwoofer Manual Features. Notify HSU Research as soon as. Strip 1⁄2˝ of insulation from each end of the wire to expose the bare metal. [download] ebooks hsu research vtf 2 mk3 subwoofers owners manual pdf HSU RESEARCH VTF 2 MK3 SUBWOOFERS OWNERS MANUAL Hsu research vtf 2 mk3 subwoofers owners manual. Series Subwoofer Manual Features. If there is damage to the subwoofer underneath, or if there are missing items, notify HSU Research as soon as possible.
As with any sub, positioning the VTF-3 Mk3 is an important step in maximizingthe system’s performance in your listening space. As these things go, the VTF-3 Mk3 isn’t all that big. Still, moving it around in order to determine the best final position might get a bit cumbersome or awkward for you. One suggestion to make moving the sub around easier (illustrated in the manual) is to place it on a blanket or something similar.
This’ll make it quite a bit easier and help make placement of your set up go quicker. In my case their really wasn’t much need to experiment with positioning as all I needed do was swap out the sub I currently use (Klipsch KW-120-THX) for the VTF-3 Mk3.
Initially arriving at the position now used by whichever sub I happen to be using at the time however did take quite a bit of work. For the larger subs too heavy/bulky to carry safely I tend to use a hand truck to get the unpacked item to the listening space, then once unpacked, I tend to use the blanket trick. For this review the VTF-3 Mk3 was teamed up with a Klipsch THX Ultra 2 speaker system, powered and/or managed by a Denon AVR-3806 AVR, all driven by a Toshiba HD-A20 DVD/VD transport. Measurements were taken using LinearXs LMS. Once situated, it didn’t take long to integrate the VTF-3 Mk3 into the rest of the system already in place in the home theatre where all the listening evaluations took place. The Denon AVR-3806 AVR was tasked with the job of bass management.
Audyssey was used throughout (engaged while watching movies, set to “Flat” when listening to music). For the sake of thoroughness, the part of the setup process that took place at the Denon end of the signal chain was run twice: once with the sub set to run in the max. Output mode and then once again when the sub was run in max. Extension mode.
Confused about what AV Gear to buy or how to set it up? Join our Exclusive!
. MK 2 Subwoofer Manual Features Variable Tuning Technology. “Now you decide how deep to play.” The large flared ports can be re-tuned with the flip of a switch and the removal of a port plug. In Maximum Output mode, the subwoofer transforms into a different device capable of playing louder material with less distortion at the expense of some deeper bass. NO USER SERVICEABLE PARTS ARE INSIDE. The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
Hsu Vtf 3
If there is damage to the subwoofer underneath, or if there are missing items, notify your local dealer or HSU Research as soon as possible. We will help you find a solution. Leave the protective bag on for now because it will protect the subwoofer when you move it into position. If your system (a) has a MAIN-IN connected with a metal jumper to a PRE-OUT, or (b) you have an external amplifier, you can purchase our HSU High Pass Box for the added benefit of keeping the bass out of your speakers.
Please contact your local dealer or HSU Research for details. IN and the CROSSOVER FREQUENCY set to 90 Hz. You may skip the rest of this step.
If you are using the HIGH LEVEL speaker connections, you will be using the subwoofer’s crossover. Look up the lowest frequency your left and right speakers will output (the frequency they are“-3 dB”. Annoying sounds can be fixed by using adhesives, tape, or felt pads in the area where objects are vibrating against each other. Equalizing the subwoofer If you have an equalizer, avoid raising dips in the frequency response. Instead, use the equalizer to remove peaks.
This will prevent potential speaker damage. Try turning the source signal up. On a Dolby Digital receiver, turn the SUBWOOFER level up in the SPEAKER SET-UP menu.
After you turn the signal up, turn down the volume knob on the subwoofer to compensate. An alternative is to turn the subwoofer ON/AUTO/OFF switch to the ON position. If you still hear no noise, contact your dealer or call/e-mail technical support for authorization to send the amplifier back for service.
Return the subwoofer to the dealer or contact HSU Research. Return the subwoofer to the dealer or contact HSU Research.
NOT HEREBY MAKE ANY OTHER REPRESEN- TATION, WARRANTY OR COVENANT WITH RESPECT TO THE CONDITION, QUALITY, DURABILITY, DESIGN, OPERATION, CAPACITY, FITNESS FOR USE OR SUITABILITY OF THE SPEAKER SYSTEMS. ©2003 HSU Research Specifications MK 2 25 Hz 32 Hz 10 inches. HSU Research 3160 E. La Palma Avenue #D Anaheim, CA 92806 800-554-0150 HSURESEARCH.COM.