Diegimui iðpakuokite archyvà á vienà vietà, o papraðius ádëti antrà diskà tik pakeiskite paskitiná skaièiø nuorodoje iki ðaltinio ið "1" á "2"]]>
On the following pages there are some basic advices for car sound builders. If you
want further information about how to do a high quality sound installation we suggest
that you download the Sound Handbook]]>
CONTENTS:
1 Introduction
2 - 3 Formulas and facts
4 Amplifier facts
5 - 7 Passive crossover filters
8 Cabling
9 - 12 Installation
13 - 17 Amplifier wiring examples
18 - 24 Speaker boxes
25 - 31 Bass boxes for subwoofers
32 Some useful tables]]>
SPEAKER ENCLOSURES, GENERALSPEAKER ENCLOSURES, GENERAL
Build your enclosures in a stable and air-tight material. The best is MDF-board, 19 mm, or particle board, 22 mm. Larger
enclosures must have braces inside to avoid resonance. The enclosure must be completely air-tight. Use sealing compound
in all joints, also in the hole for the cable. The size of the enclosure are decided by the speaker data, but also the car type
and music have an influence on the size. Deep bass demands larger enclosures than disco music.
SEALED ENCLOSURESSEALED ENCLOSURES
Sealed enclosures are easy to build. The size is not critical, but it can’t be too small. The speaker data such as Fs, Qts,
Vas and X-max decides the size of the enclosure.
Large speakers need larger enclosures. Two speakers need an enclosure of the double size etc. The enclosure must be
completely air-tight. Sealed enclosures are normally used for door-panels or kick-panels. Most 4", 5,25" and 6,5" speakers
can be used in sealed enclosures. They should be filled with acoustic wool up to 75 - 100%.
A sealed enclosure has a lower efficiency than vented one but they can handle high power and are easy to build.
A subwoofer in a sealed enclosure creates a tight bass suitable for the audiophiles listening to classical music, jazz and
soft rock.
If you use a 30-40 Hz subsonic high pass filter on the line input of your amplifier you will achieve a tight and well-defined
bass in your enclosure. ( All DLS amplifiers have a built-in subsonic filter.)]]>