you can only BRIDGE channels on an amp.

you wire subS to an amp in either series or parallel.

http://www.rockfordfosgate.com/rftech/wiri...x=15&image.y=15

 

I wasn't telling you to wire the subs this way.I was asking if this is how you had it.




Don't worry about impeadances,except for the speakers/subs.

If you are bridging channels 1 and 2 for one sub, and bridging channels 3 and 4 for the other sub, then you only need 1 set of RCA's.Basically, you can call or consider ch's 1 and 2 as your left sub ch, and ch's 3 and 4 as your right sub ch.So you connect the left RCA to either ch 1 or 2 RCA input,and the right RCA to either ch 3 or 4 RCA input.



Did I finally figure out what you are wanting to know???

 

Thats how i have it wired
2 rcas
1 is hooked up to channel 1 the other to channel 3
Im using the positive wire on the channel 1 side (going to speaker A)
Then the negative wire on channel 2 (going to speaker a)

Same goes for the other side

My confusion is how the hell can i keep this 4 ohms? By bridging, im guessing its shifting it to 2 ohms... but anyways..

You guys are going to kill me...
I spoke to random about this earlier and he reminded me that i have the dual voice coil over subs
So i have them crossed on the inside of the speaker box
He told me to remove that.. and just hook them up on one side
That should keep my system at 4 ohms

So ill keep it wired the same way.. except on the inside of my box.. i just have to hook it up to just ONE side of each 12?

Is that why my woolfer setup is being set at 2 ohms?

Thanx guys..
I know your pulling your hair by now, trying to help me..
Ill make sure to return the favor next time your car blows up, or something funny happens to the engine.. or if you purposely want to blow it up oops.gif

If im wrong..
How about you guys tell me the correct way to wire my setup so we can rap this topic up

Ill keep it simple
2 rcas coming from the stereo to the amp
Where do they go
channel 1? 2? 3? 4?

Now from the amp to the stereo
Sub A... which wires go there positive channel 1? positive channel 2? ect...
Sub B...

Dual voice thingy
Ignore it?
Or split the wiring on the way to the sub and give each side a wire?

 

I haven't been pulling anything, yet... smile.gif

Eeeuuuh, Madtib, please correct me if I'm wrong :
- A 4 channel amp = 4 x RCA and 4 x speaker (+ & -)
- Each RCA in gives an speaker out.
- Bridge an amp = using the positive flank of one channel and the negative flank of another channel on the speakerterminals. If You on this case only connect one RCA channel, where's the second channel get's his input from ?
oops.gif

Maybe I'm wrong, but it does not work on my amp if I don't connect the 4 RCA's. I would like to know if this is right or not ?

Oké, jaws, try to get you a bit further lol.gif
I really think that You should use a Y connector and connect all 4 RCA's of the Amp to the 2 from the HU.

There's a new factor now, if You have double voice coils then they need to be connected both. How much are they ? 2 ~ 3 ~ 4 ~ 8 Ohm ???
A short cut here, if they are less than 8 Ohm, connect them in serie, meaning the + of one coil goes to the - of the other coil, the remaining - and + goes to the Amp.
If they are 8 Ohm or more, just connect both + and both - to each other and go to the Amp.

From the Amp then speaker terminals should connected like this :
Channel 1 + to one sub + and channel 2 to the same sub but on - . Same thing for the other 2 channels and sub.

Don't ignore dual voice coils... and don't put a stereo signal on these coils, meaning don't put right on on coil and left on the other coil of ONE sub, this can damage the sub.

 

[ignore]

 

This is were i am confused... What he said is what im assuming

To stay at 4 ohms.. you need 4 channels.. then just bridge the channels when they get to the speaker..
Or in the case of dual coils
Wire up 1 channel on one side and the other channel on the other side
+ with +
- with -


I would really like to avoid that
I have the amps bolted to the read seats already.. i would have to remove them and do some rewiring under the carpet... GRRRR
lol


I have them wired like this
+ to +
- to -
You sure i have to hook up a + with a negative? Sounds like something might blow
lol
My neighbor had told me about this, but he was drunk at the time...
Is this really true?
If so.. that could be why the amp is shutting off..



Ok...
So i hook up channel 1 and 3
Channel 1 + to sub + (one side)
Channel 2 - to sub - (same side as positive)
Then i cross the wires on the other side of the sub going + to - and - to + ?

Same for the other sub using channels 3 and 4???
Will this keep the biatch at 4 ohms?

Ok.. i figured it out

Thats how i had it wired..
Except i used 2 channels not 1
So that means.... 2 ohms?

I should have it wired like this

Will it still work if i use 2 channels? One to supply each sub individually?

 

8O :roll: :?: We getting really confused by now I guess. I will draw a diagram or two later on today, I'm still at work, and working hard.... wink.gif

It will make things a little easier, and get us out of this mess of wires and connections. Have a look for it later on...

See that You found a schematic... But that's for 2 x double voice coils subs on a mono amp.... You have 2 dual voice coils subs and a 4 channel amp, right ????

 

Well just tell me if i can wire those subs individually using 2 bridged channels
1 & 2

3 & 4

Using 2 channel outputs from the stereo.. avoid using a Y

 

Yeaaahh, yes, you can...but what is the resistance of your subs ? only one coil ? 4 Ohm ? like on the drawing ? And you have 2 subs ? Then connect on sub like on the drawing to 1 & 2 and the other sub on 3 & 4...

Can't avoid the Y connector on the RCA (input of the amp) if you want to bridge the amp, sorry....

Here's a link where You'll find a lot on this matter and with some very clear schematics.... even why and how to connect everything the best way....

http://www.bcae1.com/bridging.htm

A few pages further on that site they explain how to connect DVC and multiple subs and speakers.

 

mine has the dual voice coil

and the woolfs are 4 ohms i believe

ill check that site out right now

So if I use the Y
I need to hook up channel 1 to one side.. and channel 2 the other side of the sub?

Same with channels 3 and 4?

No more positive channel 1 and negative channel 2 with channels 1 and 3 hooked up (same goes for channel 3 and 4 and sub B)

ugh
this is getting tiring..
lol
lol

{EDIT}

ok looking at the site..
I need to use a Y
Make sure channel 1 and channel 2 get inverted signals (one left one right)
Hook up channel 1 to one side of the sub
Channel 2 to the other
+ to + and - to - on both sides
So each sub will be individually be powered up by both channels individually

same for 3&4 and sub B

So 4 channels
4 positive outputs
4 negative outputs
Each side of the sub gets an inverted signal...

Ok i got it..

I really wish i could do away with the Y... but oh well.

thanx guys