I've done enough searching...I give up!!


I'm installing the line output converter--I've read to splice into the sub wires before they get to the factory amp (if so, which wires), and I've read it's OK to use the amplified signal at the sub but there's only like 30-80hz there.

Which is correct?

 

Seafoam green and brown.

 

I'm guessing seafoam green is the positive sub speaker wire going into the amp and brown is negative?

 

Yep...It is.

 

disconnect your sub in theback and wire it straight to that. it has a sub output already. just convert it to RCA. then plug it into your amp then to the sub.

 

Then you're amping post amp.

 

There are four wires coming out of LOC. 2 of them + (positive) and 2 of the - (negative). Do I just combine two positive/negative from LOC together and then conacct them to positive/negative subwoofer wires?

 

Yea This is exactly what I dud combine two + together and two - together

 

splice and solder the LOCs wires just before the sub terminals. one + and one - to each side. Then, once you have everything connected, run it at low volume to make sure you have the wires correct going into the subs. If you put a - where the + should be, the subs will suck in first, then push out, thus RUINING your bass response.

 

This is not a hard and fast rule, however. Just because the subs are out of phase does not mean it will ruin the response. Subs are simply moving air. Provided you have a single sub, it's doubtful you'd even notice it's out of phase (especially in a trunk). If you have 2 subs, so long as they are wired the same way with regard to polarity, it will not automatically ruin the response. It is good practice to have it hooked up correctly, but in the event the LOC is hooked up improperly and feeding the signal to the amp in reverse polarity, there is an easy fix - wire the outputs in reverse polarity as well.

Big Mack

 

if your subs are sucking in first vs. pushing out first, the output will be muddy and horrible. The subs are designed to deliver punchy, clear bass by pushing out first.

Wiring the outputs in reverse polarity with regard to the LOC is the exact same thing as changing the polarity of the sub input wires, just on the other side.

 

Again, not all the time. You cannot make the generalization that hooking the subs up in reverse polarity will make them sound "muddy and horrible" with every single sub. We used to have to switch polarity on subs all the time when tuning, so I know for a fact that this is not the case. Can it be the case? Yes, if the sub is designed to have high forward excursion and a bumped back plate to give more forward area for the voice coil to stay in the gap. Are most people running high excursion subs that are designed almost exclusively for SPL? No, I would say they are not, because most subs are not designed with a bumped back plate.

I know this, and that's why if you re-read what I stated, it is to correct the problem of hooking up the LOC with reverse polarity. If both are hooked up reversed, it is the same as hooking them up in standard polarity.

Big Mack

 

I'm going to have to agree with Big Mack, most HU have this option, as it is a great tool for tunning!

 

What are the advantages/disadvantages of each? Which will give me the most thump?
^^This sounds the opposite of how Sheehan1p wires are connected or am I misunderstanding? Is jcatGS3 saying to connect one + and one - together from the LOC and then connect that to one of the spliced sub wires... Or does he mean one(pair of)+ and one(pair of)- to each side(of sub terminals), like Sheehan1p and krispl first stated.
Can someone please make this clear to me, want to install this weekend, thanks

 

save yourself the trouble of burning something up, I know your one of those DIY guys most of us are, but when it comes to electrical, and its still complicated, evan after 14 diff members help, Bro just take it to a local shop!
BTW what part of texas you from?