i have been observing ....everyone wants to do something related to audio stufff or how to install them or atleast have some knowledge regarding this all
so no need to search now ! what i have got here it is !
ENJOY
1) Headunit
Amplifier
Woofer and Speakers
THE BASIC SYSTEM
dtOK, Now to systems. /dtddThe following is the most basic system. It involves a head unit (HU) and 2 pairs of speakers which are driven by the head unit's internal amplifier. You can see that the battery terminal of the HU is connected to a constant source of power (the battery) with an inline fuse. The accessory wire for the HU is connected to a power source which only has power when the ignition switch is in the 'on' or 'acc' positions. The battery and accessory connections will not be shown in the following diagrams but will be the same for all of the systems. The lines point to the speakers but the exact connection isn't shown. The colored speaker wires from the HU are going to be connected to the positive speaker terminal of the speaker. The black or darker speaker wire will be connected to the negative speaker terminal. Of course, this is just a generic type of diagram and you should consult the wiring diagram which was supplied with the HU. /dddd
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Head Unit, 1 Amp and 4 Speakers
dtUsing the H
U's internal amplifier
and
an external amplifier:
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In this diagram, you see that the
front
speakers are being driven from the HU's
internal
amplifier and a pair of
rear
speakers are being powered by an
external
amplifier. This type of system has ve
ry little chance of sounding good. If the amplifier is being used because more volume is desired and the front and rear speakers are roughly equivalent in efficiency then the front speaker's amplifier will probably be driven into clipping well before the external amplifier reaches clipping. If the HU's fader is turned toward the rear (amplified) speakers, you may get better sound quality (or at least less clipping from the internal amplifier) but the image will be from the rear of the vehicle which is generally undesirable. Many people run tweeters from the internal amplifier but this also generally leads to less than optimum sound quality. Not because the internal amplifier is of poor quality but because it will be driven into clipping if the output of the tweeters is to keep up with the speakers which are driven by the external amplifier. /dddd
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Head Unit, 1 Amp and 4 Speakers (all on amp)
Since most amplifier are capable of driving 2 pairs of speakers, I would strongly recommend driving all of the speakers from the external amplifier
Head Unit, 1 Amp and 4 Speakers (2 subs on amp)
This syste
m has a better chance of sounding good than the system which had the amplifier driving the rear
full range
speakers. If the amplifier has a built in crossover, you'd set the crossover for
low
pass and probably to about 90 or 100 hertz (if there's a choice). You still won't be able to get very high SPL before the HU's internal is driven into clipping but if you only need to pick up the bottom
octave
or so of the au
dio spectrum, this may do a good job.
Note: The remote/power antenna wire won't be shown on the following diagrams but you obviously have to connect it in a real installation.
Head Unit, 2 Amps and 4 Speakers (2 subs on one amp)
This diagram shows how you'd connect 2 amplifiers if the amplifiers had internal crossovers. You would set the crossover on the top amplifier to high pass and the crossover on the bottom amplifier to low pass. You could adjust the levels of each amplifier by using the HU's fader control or with the gain controls on the individual amplifiers.
multi channel basics comming soon