line driver

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=109555
Printed Date: May 03, 2024 at 7:57 AM

Topic: line driver

Posted By: upzaw2000
Subject: line driver
Date Posted: December 07, 2008 at 2:41 PM

quick question,

i am about to get a line driver... but my question is... if i have 2 sub amps.... and i split the RCA lines so the signal goes to both amps... does it also split the voltage over the 2 amps....

example: line driver 10 volts/2 amps= 5 volts per amp?

Replies:

Posted By: i am an idiot
Date Posted: December 07, 2008 at 3:14 PM

10 volts divided by 2 amplifiers = 10 volts to each amplifier. Why are you even thinking about a line amp? The input impedance of an amplifier is around 10,000 ohms. You can easily connect 10 or more amplifiers to even a basic deck without losing voltage from the deck..

Posted By: upzaw2000
Date Posted: December 07, 2008 at 3:20 PM

Why would i want a line driver?

the deck only puts out 3 or 4 volts.... I compete in Usaci so the extra voltage coming through the RCAs will matter.

Posted By: i am an idiot
Date Posted: December 07, 2008 at 3:42 PM

Are you using amplifiers designed for use in automobiles?

Posted By: haemphyst
Date Posted: December 07, 2008 at 5:03 PM

upzaw2000 wrote:

Why would i want a line driver?

the deck only puts out 3 or 4 volts.... I compete in Usaci so the extra voltage coming through the RCAs will matter.

Wrong answer. If you have an amplifer that has an effective sensitivity that even TOUCHES the output voltage of the amplifer, (example: let's just say the amp has a range of 200mV to 8V, and your present deck offers 3V) you will get full output from the amplifier... You cannot NOT get full output. That's the fact. The reason that i am asked if you were using amplifiers for the car, then your 3 to 4 volt deck will be perfectly adequate to get all the power from your amps; they WILL be driven to full output.

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