I give a formula in Ref. 2 and in Design Models A1 that relates the sound pressure level from a driver on an open baffle to the SPL from the same driver in an acoustically small closed box, assuming that both have the same cone excursion. frequency Fequal the SPL is the same for either driver arrangement. The open baffle driver output decreases at 6 dB/oct below this frequency relative to the closed box.

If your current receiver has no subwoofer (RCA) line level output, you will need to connect the subwoofer to your receiver using speaker wire connections on the rear of the receiver. You first need to take the speaker input from the subwoofer to the A or B speaker terminals on the rear of the AV receiver. Then take the speaker outputs from the sub woofer and connect to the main speaker terminals inputs. See similar questions...

You typically have two options when connecting a powered sub woofer. Input (1) on the rear of the sub woofer would be used when connecting the sub woofer to the receiver using speaker wires. You would then connect the main speakers to the opposite end, or output or the sub woofer to the main speakers. Option (2) would be using RCA line level output jacks, input (2) on the rear panel of the sub woofer directly to the single sub woofer output on the back of an AV receiver. See similar questions...

No. We do not recommend that you connect anything except the B1 bass module to this output, as the internal amplifier and B1 bass modules are designed to properly equalize the system when connected. Use the Bass Line Out connection to feed a powered subwoofer or additional amplifier. See similar questions...

A28 - The shorter you make D, the distance between front and rear openings of the PHOENIX and H-frame woofers, the higher the frequency for which the rear wave adds in phase to the front wave, and the unequalized dipole output reaches its first 6 dB peak. Unfortunately, there is a resonance that comes into play before this peak. The cabinet structure between the driver cone and the cabinet opening forms an acoustic transmission line. See similar questions...

A30 - A dipole placed in a room corner should provide minimal excitation of room modes or resonances. The corner is a region of maximum sound pressure and it is well known that a typical monopole woofer in this location will couple optimally to all room modes. A monopole woofer would be a high impedance pressure source in the high impedance region of all wave modes (Z = p/v) and be optimally adapted to support them. See similar questions...

A34 - The low frequency roll-off of a woofer and its associated group delay are optimal, from what I have observed, when they follow the response of a 2nd order highpass filter with Q = 0.5. When a driver is mounted in a dipole W-frame or H-frame its mechanical resonance frequency Fs decreases to Fd, due to air mass loading, and Qts increases by a similar percentage to Qtd. For example, a driver with very strong motor, Fs = 18 Hz and Qts = 0.2 might have Fd = 16 Hz and Qtd = 0. See similar questions...

A39 - It is often assumed that excessive amounts of power are required to drive a dipole woofer, because of the necessary 6 dB/oct acoustic roll-off equalization and additional boost required for drivers with Qts below 0.5. In fact, equalization does not change the power requirement. It is a driver's cone excursion for generating a desired SPL which determines how much output voltage and current an amplifier must be able to provide. See similar questions...

Sub-committees are created by standing committees. They may have all of the powers of the standing committee except the power to report directly to the House. They usually have a smaller number of members than the standing committee and are responsible for studying a much more specific subject matter. The members appointed to a sub-committee are usually chosen from among the members of the standing committee that created the sub-committee. See similar questions...

Physics. The trend in the world of powered subwoofers is to have big numbers out of small cabinets, and it doesn't matter what happens to acheive that end. Thus you have many "audiophile" subwoofers pumping out dirty, overly EQ'd bass. In reality, if you want clean bass, you have to have the cabinet size to allow for sufficient loading of the woofer cone--that's the physics part. See similar questions...

Sound quality is just as important as picture quality, but is often given less attention by producers. We reject far more films because of unacceptable audio quality than because of poor photography. During production, pay as much attention to microphone selection and placement as to camera angles — it will pay off in a better, and more marketable, film. See similar questions...

The Java Sound API specifies mechanisms for capturing, processing, and playing back audio and MIDI (Musical Instrument Digital Interface) data in a framework that promotes extensibility and flexibility. Sun's reference implementation for the Java Sound API, also known as the Java Sound engine, is a 64 channel audio rendering and MIDI controlled sound synthesis engine which offers reliable, high quality sound on all Java 2 Platforms. See similar questions...

Founded in 1978 and now located just outside of Toronto, Canada, Sound Ideas is the world's largest publisher of sound effects for the professional broadcast, post-production and motion picture industries. We also publish The Mix Broadcast Music Library, and offer a growing number of products for use in multimedia, game and Web design. Our sound effects and music libraries are used all over the world. See similar questions...

Sound Ideas, we record, design and publish thousands of different single isolated sounds, special effects and background ambiences. These include everyday sound effects like doorbells, car horns and telephone rings, specialty sounds like comedy, fantasy and science fiction FX and musical accents, and longer background ambience tracks to make the listener really feel like they are in places like a courtroom, a church, a train station, a thunderstorm or a jungle. See similar questions...

Holophonic Sound is an extremely realistic type of sound recording invented by Hugo Zuccarelli. For more information, please see "What is Holophonic Sound?" on this Web site. Sound Ideas also distributes the Dimension Sound Effects Library, the world's first and only holophonic sound effects collection. See similar questions...

A sampler device permits the recording (sampling) and replay (playback) of audio in a digital format - so a sampled sound is one that has been digitized and stored in the RAM memory of a sampler. The sampler allows the digitized audio file to be amplified and manipulated in different ways, for example: playback of the sampled sound at a different speed will alter its pitch. See similar questions...

We do in fact have windows media steaming sound and cameras. They are only available to direct members of our websites, VoyeurDorm.Com and DudeDorm.Com. See similar questions...

During a typical committee meeting the Chair will first introduce the witnesses and then allow them to provide the committee with a short presentation. Following these presentations, the committee normally allows members to question witnesses about their presentations. See similar questions...

While some sub-committee Chairs are elected by members of the standing committee, the Chair of this Sub-Committee was named in the motion establishing the Sub-Committee. The Chair presides over the Sub-Committee's business and oversees the proceedings. Under the procedural rules of the House, the Chair has the power to maintain order and decorum during sittings and decides all questions of order and procedure. This is the main duty of the Chair. See similar questions...

Many people contribute to the effective operation of a sub-committee. The principal staff of a sub-committee include the Clerk and the research staff. The Clerk of a sub-committee is the procedural adviser and administrative officer to both the Chair and the committee. The Clerk performs his or her duties and responsibilities in constant consultation with the Chair. See similar questions...