HOW DO I wire AN 8ohm realistic40-102 and a 4ohm Rockford fosgate S1-84 to a PLA2570?

[Henry De Roche 10+ year member]

I have been reading up on this stuff, but haven't found anything that talks about different impedance of speakers...

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[Henry De Roche 10+ year member]

thats a realistic 40-1024

 

[Slayerx 10+ year member]

You don't

 

[shizzzon 10+ year member]

The reason why you don't see people talking about wiring different coil configs together is because it's thermally dangerous.

The 4 ohm driver will receive more power than the 8 ohm driver will.

It will also be a fact that because of this, the 4ohm driver may be audibly dominant in the vehicle meaning the remainder of power being sent to the 8ohm driver may be a waste.

 

[Henry De Roche 10+ year member]

It can't be done without hurting the amp?

 

[shizzzon 10+ year member]

it will not hurt the amp, but it would be BETTER to just run one driver over both.

 

[05trailblazer 10+ year member]

^^^ this dont do it man, just dont i beg u //content.invisioncic.com/y282845/emoticons/nono.gif.eca61d170185779e0921b0faa9704973.gif

 

[Henry De Roche 10+ year member]

ahhhh yes I noticed that it was stronger...and the amp keeps going into protection within minutes, I thought I might be able to manipulate to work until I get better speakers...

 

[Louisiana_CRX 5,000+ posts]

Wire one speaker to each ch of the amp...the 8ohm speaker will receive less power but it will work

 

[Bettr n' Revrse 5,000+ posts]

It can't be done without hurting the amp?

No the drivers... ohms is resistant so when one driver has less resistance then the other itll be getting more power then other there for hurting them when you try and push the 8 ohm speaker as hard as the 4 ohm... In a nutshell anyway

 

[shizzzon 10+ year member]

Oops.. sorry, i was using the wrong formula in my head...

Wiring both of these subs together will yield a DCR below 3ohm.

That means you must be wiring to an amp that is only stable at 4ohm!

So in short, yes it can hurt the amp if you continue this process.

 

[Henry De Roche 10+ year member]

I have it wired into the only place that will take speakers and its labled bridge, I wired each one what I thought was into the two seperate channels. It was red to the +and black to the-

 

[Bettr n' Revrse 5,000+ posts]

I have it wired into the only place that will take speakers and its labled bridge, I wired each one what I thought was into the two seperate channels. It was red to the +and black to the-

Thats cuz in bridged mode that amp is only stable at 4 ohms... wiring at 3 like stated above will hurt your amp

 

[Henry De Roche 10+ year member]

frustrated...

 

---------- Post added at 09:23 PM ---------- Previous post was at 09:23 PM ----------

 

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[Henry De Roche 10+ year member]

So there is no way...Its not like Im trying to turn heads, I just wanted to increase my bass to hit...I could run only the one Rockwell, but I wanted to get it to hit hard!