LOC Gain Settings

Gas Is Expensive · 02-28-2008, 10:51 PM

For those of you using a converter, how did you go about setting all of the levels? Did you just set the LOC gains to the max, and then adjust the amp gains from there, or what?

lostdaytomorrow · 02-29-2008, 12:31 PM

Yes. LOC Gains are normally kept maxed out.

Gas Is Expensive · 02-29-2008, 09:58 PM

Thanks

Tronixx · 02-29-2008, 10:21 PM

Yep for whatever reason, I have to have the gain turned up on my LOC pretty high, about 3/4. In other cars I've had it wasn't like this, but I haven't noticed it hurting the sound quality or anything like that so far to have it turned up. When turned down I can barely hear my sub.

lensam69 · 03-02-2008, 12:20 AM

I swear to god, this has got to be my biggest pet peeve....

You can do it by ear, but the correct way to do it is with a multimeter.

If you have your amp's manual handy, take a look at what the input sensitivity voltage is. This will be given as a range (eg. 0.5V - 5V). Your target will be in the middle of this range (3V in this example).
Follow the procedure detailed in this page:
How to set the gains
Instead of measuring the amp's output, you'll be measuring the LOC output (with the amp unplugged) and your target voltage would be somewhere in the middle of that previously mentioned range (remember to look up your particular amp specs).

If that's too much, you can alway do the good ol' 3/4 volume by ear setup.

Gas Is Expensive · 03-02-2008, 04:14 AM

Quote:

Originally Posted by lensam69

I swear to god, this has got to be my biggest pet peeve....

You can do it by ear, but the correct way to do it is with a multimeter.

If you have your amp's manual handy, take a look at what the input sensitivity voltage is. This will be given as a range (eg. 0.5V - 5V). Your target will be in the middle of this range (3V in this example).
Follow the procedure detailed in this page:
How to set the gains
Instead of measuring the amp's output, you'll be measuring the LOC output (with the amp unplugged) and your target voltage would be somewhere in the middle of that previously mentioned range (remember to look up your particular amp specs).

If that's too much, you can alway do the good ol' 3/4 volume by ear setup.

Well, the gain on my amp is clearly labeled 0.5V - 5V. So, to clarify, you're saying that I should set the LOC's gains to 3V and then adjust my amplifier's gain from there?

lostdaytomorrow · 03-02-2008, 12:22 PM

Quote:

Originally Posted by Gas Is Expensive

Well, the gain on my amp is clearly labeled 0.5V - 5V. So, to clarify, you're saying that I should set the LOC's gains to 3V and then adjust my amplifier's gain from there?

If that's what he's saying, then he has no idea what he's talking about. But, I don't think that's what he's saying. He is referring to how to set the amplifier's gain in that post.

Gas Is Expensive · 03-02-2008, 12:34 PM

Quote:

Originally Posted by lostdaytomorrow

If that's what he's saying, then he has no idea what he's talking about. But, I don't think that's what he's saying. He is referring to how to set the amplifier's gain in that post.

Well then he STILL has no clue what he's saying, because he completely failed to give an appropriate response to the question I was asking.

I want to know how to set the line-out converter's gains, not the amp. Read before responding please. Thanks.

Bulli Kid · 03-02-2008, 12:37 PM

i set my LOC 50/50

Gas Is Expensive · 03-02-2008, 12:46 PM

OK, so it sounds like nobody really knows how to properly set the gains on a line-out converter.

:)

lensam69 · 03-03-2008, 01:25 AM

I'm here...
I try to stay away from the computer on weekends.

The gains on the LOC are there to make it easier to match their output to the input sensitivity of the amp.

The procedure (as described on the link) is exactly the same as if you were setting the gain control for the amp. Calculate your target voltage (I like to go half the range of the amp's input because it gives you headroom), defeat all equaliztion in the head unit, use the appropriate test tone depending on what channel you're setting up. (low 80Hz for subs, mid 1000Hz for components), and adjust until you reach your target!

I do believe I answered the original question.

It's the same procedure for any device along the audio chain.
First you set your LOC's then you set your amps.

Hope that clarifies it.

LostDay: You don't max something out without looking at the input requirements at the other end.

02-28-2008, 10:51 PM	#1 (permalink)
Gas Is Expensive Senior Member Join Date: Feb 2008 Location: West Bloomfield, MI Age: 29 Posts: 255 Mitch iTrader: 3 / 100%	LOC Gain Settings For those of you using a converter, how did you go about setting all of the levels? Did you just set the LOC gains to the max, and then adjust the amp gains from there, or what?

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02-29-2008, 12:31 PM	#2 (permalink)
lostdaytomorrow Senior Member Join Date: Oct 2006 Posts: 734 iTrader: 0 / 0%	Yes. LOC Gains are normally kept maxed out.

02-29-2008, 09:58 PM	#3 (permalink)
Gas Is Expensive Senior Member Join Date: Feb 2008 Location: West Bloomfield, MI Age: 29 Posts: 255 Mitch iTrader: 3 / 100%	Thanks

02-29-2008, 10:21 PM	#4 (permalink)
Tronixx Senior Member Join Date: Oct 2007 Posts: 194 iTrader: 0 / 0%	Yep for whatever reason, I have to have the gain turned up on my LOC pretty high, about 3/4. In other cars I've had it wasn't like this, but I haven't noticed it hurting the sound quality or anything like that so far to have it turned up. When turned down I can barely hear my sub.

03-02-2008, 12:20 AM	#5 (permalink)
lensam69 Member Join Date: Sep 2007 Posts: 88 iTrader: 0 / 0%	I swear to god, this has got to be my biggest pet peeve.... You can do it by ear, but the correct way to do it is with a multimeter. If you have your amp's manual handy, take a look at what the input sensitivity voltage is. This will be given as a range (eg. 0.5V - 5V). Your target will be in the middle of this range (3V in this example). Follow the procedure detailed in this page: How to set the gains Instead of measuring the amp's output, you'll be measuring the LOC output (with the amp unplugged) and your target voltage would be somewhere in the middle of that previously mentioned range (remember to look up your particular amp specs). If that's too much, you can alway do the good ol' 3/4 volume by ear setup.

03-02-2008, 12:37 PM	#9 (permalink)
Bulli Kid Senior Member Join Date: Sep 2007 Location: Chicago Posts: 309 GReg iTrader: 0 / 0%	i set my LOC 50/50

03-02-2008, 12:46 PM	#10 (permalink)
Gas Is Expensive Senior Member Join Date: Feb 2008 Location: West Bloomfield, MI Age: 29 Posts: 255 Mitch iTrader: 3 / 100%	OK, so it sounds like nobody really knows how to properly set the gains on a line-out converter. :)

03-03-2008, 01:25 AM	#11 (permalink)
lensam69 Member Join Date: Sep 2007 Posts: 88 iTrader: 0 / 0%	I'm here... I try to stay away from the computer on weekends. The gains on the LOC are there to make it easier to match their output to the input sensitivity of the amp. The procedure (as described on the link) is exactly the same as if you were setting the gain control for the amp. Calculate your target voltage (I like to go half the range of the amp's input because it gives you headroom), defeat all equaliztion in the head unit, use the appropriate test tone depending on what channel you're setting up. (low 80Hz for subs, mid 1000Hz for components), and adjust until you reach your target! I do believe I answered the original question. It's the same procedure for any device along the audio chain. First you set your LOC's then you set your amps. Hope that clarifies it. LostDay: You don't max something out without looking at the input requirements at the other end.