Instruction/ maintenance manual of the product PV1 Bowers & Wilkins
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Development of the PV1.
The Problem The holy grail of subwoofer design is deep and clean bass from a near -invisible box. The immediate problem that arises is that reduced box size both curtails bass extension and increases pressur e on the enclosure wall and driver diaphragm.
T o illustrate this, there are two analogies that we can apply . The first is the soap bubble. An undisturbed bubble assumes a spherical shape because the pressure difference inside and out is perfectly balanced by the only force the bubble can sustain - surface tension that is entirely in the curved plane of the skin.
These effects are r elated to the ratio of the sound wavelength to the dimensions of the enclosure. The resulting pressur e and force gradients allowed the reintroduction of bending for ces on the walls of the sphere, which raised the level of radiated sound and coloration.
A secondary consequence of the use of twin opposing drivers is the inherently balanced kinetic natur e of the device. It is well known that the repr oduction of bass with correct dynamics r equires a firm, solid foundation – sometimes referr ed to as a mechanical ground.
The vibration levels of the PV1 (red) are compared with those of a conventional subwoofer (blue) of similar bandwidth, output capability and drive unit radiating area, but using a single 250mm driver in a heavily braced wooden cabinet.
T echnical featur es Description Drive unit Frequency range Frequency r esponse Amplifier Low-pass filter Dimensions Net weight Cabinet finish Pressur e vessel enclosure 500W I CEp ower® amplifie.
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An important point after buying a device Bowers & Wilkins PV1 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Bowers & Wilkins PV1 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Bowers & Wilkins PV1 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bowers & Wilkins PV1 you will learn all the available features of the product, as well as information on its operation. The information that you get Bowers & Wilkins PV1 will certainly help you make a decision on the purchase.
If you already are a holder of Bowers & Wilkins PV1, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Bowers & Wilkins PV1.
However, one of the most important roles played by the user manual is to help in solving problems with Bowers & Wilkins PV1. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bowers & Wilkins PV1 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
