Best spot for a Line Driver ?
Thread Starter
50 Watt CAFz'r
Joined: Jan 2012
Posts: 111
Best spot for a Line Driver ?
Hello guys I just put in a Audiocontrol Line Driver placed it in the back right beside the sub amp would that be the best place for it ? or right in the front close after the deck ? what spot would I get the best results from it ?
Thxs !
Thxs !
500 Watt CAFz'r
Joined: Sep 2008
Posts: 723
Hey Jeff,
I did a quick Googling, as I wasn't exactly sure what a line-driver was. I found this, which may be of some use to you. I have put the important parts in bold.
Also, I did a search on your JVC head-unit. It has 5V pre-outs. So I have to ask, is the line-driver for this source unit?
I did a quick Googling, as I wasn't exactly sure what a line-driver was. I found this, which may be of some use to you. I have put the important parts in bold.
Also, I did a search on your JVC head-unit. It has 5V pre-outs. So I have to ask, is the line-driver for this source unit?
Description
This article is from the Car Audio FAQ, by Ian D. Bjorhovde (ianbjor@mobileaudio.com) with numerous contributions by others.
3.31 What is a Line Driver? Do I need one? [LC,IDB]
A line driver is a device that amplifies a signal, such as the low-level
signal output from a head unit. Line drivers are made to amplify the
line level signal to as much as 10 volts or higher. This, of course, is
useless unless the receiving end can handle 10 volts as input. To solve
this problem, there are line receivers which bring the line level
voltage down from 10 volts or more to about 1 volt. Usually, the line
driver and receiver are placed as close to the sending signal source and
destination as possible, to minimize noise pick up.
The automobile is an inherently noisy electrical environment. So RCA
cables may pick up noise as it makes its way to the amplifier. Note
that noise here refers to the induced noise, not ground loop noise such
as engine whine. A simple way to fight against this noise is to make
the signal level carried in the RCA cable very high, thus increasing the
signal's resistance to induced noise and resulting in a higher signal to
noise ratio at the destination of the RCA cable. Most head units
produce a fairly low output voltage (< 1.5 V), although recently high
end head units advertise 4 volt or higher output, and won't usually need
a line driver.
Read more: 3.31 What is a Line Driver? Do I need one? [LC,IDB]
This article is from the Car Audio FAQ, by Ian D. Bjorhovde (ianbjor@mobileaudio.com) with numerous contributions by others.
3.31 What is a Line Driver? Do I need one? [LC,IDB]
A line driver is a device that amplifies a signal, such as the low-level
signal output from a head unit. Line drivers are made to amplify the
line level signal to as much as 10 volts or higher. This, of course, is
useless unless the receiving end can handle 10 volts as input. To solve
this problem, there are line receivers which bring the line level
voltage down from 10 volts or more to about 1 volt. Usually, the line
driver and receiver are placed as close to the sending signal source and
destination as possible, to minimize noise pick up.
The automobile is an inherently noisy electrical environment. So RCA
cables may pick up noise as it makes its way to the amplifier. Note
that noise here refers to the induced noise, not ground loop noise such
as engine whine. A simple way to fight against this noise is to make
the signal level carried in the RCA cable very high, thus increasing the
signal's resistance to induced noise and resulting in a higher signal to
noise ratio at the destination of the RCA cable. Most head units
produce a fairly low output voltage (< 1.5 V), although recently high
end head units advertise 4 volt or higher output, and won't usually need
a line driver.
Read more: 3.31 What is a Line Driver? Do I need one? [LC,IDB]
Here is good explaination in terms of this topic, also check out the other papers
GlassWolf's Pages
GlassWolf's Pages
500 Watt CAFz'r
Joined: Sep 2008
Posts: 723
The other advantage to having a higher line voltage from your pre-outs is a higher resolution signal. The more amplitude (Y axis) you have in your source signal, the more detail you'll be able to squeeze into that waveform. Think of it like zooming in on a JPG image. If the original image is high resolution to start with, then when you expand the image to a larger size (as the amplifier does with the audio signal) then your resulting, larger image will be sharper, whereas if the original image is a low resolution thumbnail type image, then when it's enlarged, the image will not be as clear or detailed.
So for SQ builds, do guys generally try and find amps that have higher input voltage ranges, so they can feed them high voltage sources?
Thread Starter
50 Watt CAFz'r
Joined: Jan 2012
Posts: 111
Hey Jeff,
I did a quick Googling, as I wasn't exactly sure what a line-driver was. I found this, which may be of some use to you. I have put the important parts in bold.
Also, I did a search on your JVC head-unit. It has 5V pre-outs. So I have to ask, is the line-driver for this source unit?
I did a quick Googling, as I wasn't exactly sure what a line-driver was. I found this, which may be of some use to you. I have put the important parts in bold.
Also, I did a search on your JVC head-unit. It has 5V pre-outs. So I have to ask, is the line-driver for this source unit?
