Manual Blaupunkt vxw 300 velocity (page 3 of 23) (English, German, French)

392384

Zoom out

Zoom in

1/23

DEUTSCH ENGLISH

FRANÇAIS

DUAL VOICE COIL ADVANTAGES

The dual voice coil woofer is actually quite old in the home audio industry but still relatively new to the

car audio world. The largest advantage of the DVC woofer is in the flexibility in installation. In order to

raise the sound pressure level (loudness) in a car, you can either add more speakers or add more

amplifier power to drive a single speaker. Many cars cannot fit two subwoofers and their necessary

enclosure volumes but can easily fit large power amplifiers and a single woofer. Simply speaking, the

DVC woofer allows you to make up for speaker deficiencies with additional amplifier power.

SUBWOOFER ENCLOSURE TYPES

Sound is created by the movement of the woofer

cone back and forth. If a woofer cone moves

forward creating a positive pressure wave, this

same motion creates a negative pressure at the

back of the woofer. If these two waves combine

due to the lack of a wall separating the front of the

speaker sound from the back, the output from

the woofer is effectively cancelled thus substan-

tially reducing the bass output of the speaker.

This wall is absolutely necessary and is referred

to as an acoustical „baffle“. It can be accom-

plished using a box of some kind or simply the

rear package shelf of an automobile to isolate

the front and back waves of the speaker.

THIELE-SMALL PARAMETERS

Every woofer has its own electromechanical characteristics which are called THIELE-SMALL

parameters. The three most important parameters include RESONANT FREQUENCY („fs“- the

frequency where the speaker moves with the least mechanical resistance), TOTAL Q („Qts“- the

„magnification“ of the cone movement at its resonant frequency), and VOLUMETRIC COMPLIANCE

(„Vas“- the equivalent volume of air that the woofer cone can displace for a given power input). Using

these parameters we can then calculate an optimum box volume for a particular woofer and reasonably

predict its frequency response.

COMMON ENCLOSURE TYPES

In the car audio world there are five types of subwoofer enclosures commonly used: INFINITE

BAFFLE, SEALED BOX (closed box), VENTED BOX (bass reflex), SINGLE-VENTED BANDPASS

(often incorrectly referred to as „5th“ order), DUAL-VENTED BANDPASS (often incorrectly referred

to as „7th“ order). No single design is superior because each has its own compromise in performance,

power handling and design complexity. The bandpass name implies a „built-in“ acoustical response

which has a natural highpass response (@ 30 Hz for example) but also a lowpass response

suppressing high frequencies (e.g., > 80 Hz).

8 622 401 256

FRAME

SURROUND

CONE

DUST CAP

FRONT PLATE

YOKE

VENT

VOICE COIL

SPIDER

MAGNET

Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

Forumrules

To achieve meaningful questions, we apply the following rules:

First, read the manual;
Check if your question has been asked previously;
Try to ask your question as clearly as possible;
Did you already try to solve the problem? Please mention this;
Is your problem solved by a visitor then let him/her know in this forum;
To give a response to a question or answer, do not use this form but click on the button 'reply to this question';
Your question will be posted here and emailed to our subscribers. Therefore, avoid filling in personal details.

new questions and answers
new manuals

You will receive an email to register for one or both of the options.

Get your user manual by e-mail

Enter your email address to receive the manual of Blaupunkt vxw 300 velocity in the language / languages: English, German, French as an attachment in your email.

The manual is 3,78 mb in size.

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.

Info

Blaupunkt vxw 300 velocity Manual

Product: