WaCkKoO Posted March 9, 2015 Report Share Posted March 9, 2015 Hello! Got another noob question... I was told that if I installed a line driver in between my radio and my sub amplifier that I would be able to turn down the gain on my amplifier, causing it to work "less as hard" while still playing just as loud. I guess what my installer buddy was trying to say was somehow the extra voltage causes the amplifier to run more efficiently somehow? This is supposed to score you more power in the long run and thus more sound. If someone could explain, that would be great! It just seems too good to be true, I mean, then a line drive would almost need to be a necessity! Oh, I'm running an Alpine CDE-HD149BT, which is supposed to have 4v RCA outputs. Thanks! Link to comment Share on other sites More sharing options...
_paralyzed_ Posted March 9, 2015 Report Share Posted March 9, 2015 He's full of shit. Link to comment Share on other sites More sharing options...
n8ball2013 Posted March 9, 2015 Report Share Posted March 9, 2015 Wih your head unit no way THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger. Link to comment Share on other sites More sharing options...
scooter99 Posted March 9, 2015 Report Share Posted March 9, 2015 I'm not sure why you would need one with 4v outs. What amp are you running, what subs, what final ohm load? Why type of enclosure? What platform are you going for? Example, are you just doing a daily driver, a demo machine, competition, etc. I'm using a line driver because I'm using several amps, and I'm running a tablet as my source unit which doesn't have a very powerful output. The line driver will add signal volts and give me a stronger signal. I'm sure someone will be able to give a better answer than me, but seems to me if you set your head unit and amp to the highest non clipped setting (set with a DD1 for example) then you're going to get the best signal no matter if line driver or not. But like I said, I think maybe someone will have a better answer. Facebook Page: S99Creations 2006 F250 Lariat Build Link to comment Share on other sites More sharing options...
SnowDrifter Posted March 9, 2015 Report Share Posted March 9, 2015 You only need a line driver if your source isn't putting out the voltage required to drive your amp. Gain setting is irrelevant in the way you describe it. It's the ratio between input and output voltage. Higher input voltage necessitates a lower ratio (gain setting) and vice versa. Power is power, independent of this ratio. ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444 Link to comment Share on other sites More sharing options...
WaCkKoO Posted March 11, 2015 Author Report Share Posted March 11, 2015 Thanks for the responses! I was thinking along the same line as your guys' responses. Oh, and this is just a daily driver, just one 1200w Pioneer amp with an SA-15, nothing too fancy. I just couldn't wrap my mind around how he was seemingly finding more power in my system, just by adding a line driver. He did work in a shop, so maybe this was something he was taught to say to increase sales :/. Thanks for all the input, and I'm open for more information if anyone's got it! Link to comment Share on other sites More sharing options...
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