Adding another Sub and Ohms question

[City_Slicker]

Currently running an Arc Audio KS1200.1 with 2 subs at 2 ohms. Adding a 3rd 2ohm sub in. Wiring 3 subs that will take the amp down to 1.35 ohm per the Rockford Fosgate wiring diagram. However, all 3 ill be wired to separate corners and going into the amp in 3 different sets of wires instead of 1 wire split into 3 as in the diagram. First off, is it okay for the 3 subs to come into the amp seperately? Do I need to do any adjustments to amp with the lower ohms?

$700 amp. Dont want to burn it up adding another sub. But apparently this amp goes down to 1 ohm. So 1.38 ohms would be acceptable and have power to run all 3??

Thanks.

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[City_Slicker]

Nobody responded so I took my best guess and wired it up with a friends advice. Would realy like to know I did it right before pushing hard for a full day!!

They subs are all dual 2 ohm. With one positive wired to opposite negative and other ran to amp. Which I believe would make each on 2 ohms. 2 of them are solar baric L5's. One is a wetsound 10 wired the same way. With advice from a buddy, I wired all 3 separatly, then tied all into one wire that went into the sub. I guess that would be parallel. The Rockford Fosgate Wiring Wizard website ran them from what I understand this way and it brought down to 1.34 ohm load. But now Im being told I may be under 1 ohm, which is not good....

It works, it thumps, but am I going to burn something up this way or did I wire it right???

This stereo will be expected to play hard all day at the lake (in my boat). I wanted to add the 3rd one because moving the bass forward to add fat sacs in the back for wakeboarding.

Now just need to make sure are wired safely.

Please help.....

 

[trumpet 5,000+ posts]

Just watch the voltage. Amps don't like to be run with low voltage, and this is one way amps die. I'd probably not let it run below 11.5V, although your amp will probably keep playing, because it's hard on the batteries. I don't do boat systems at all though.

It's fine to wire the subs in parallel at the amp and not have one set of wires coming out of the terminals.

You want to wire the coils in series on each sub and parallel at the amp. Confirm 1.34 ohms with a multimeter with the system off. Subwoofer Wiring Diagrams, Three 2 ohm Dual Voice Coil (DVC) Speakers

 

[Preston019 10+ year member]

Nobody responded so I took my best guess and wired it up with a friends advice. Would realy like to know I did it right before pushing hard for a full day!!
They subs are all dual 2 ohm. With one positive wired to opposite negative and other ran to amp. Which I believe would make each on 2 ohms. 2 of them are solar baric L5's. One is a wetsound 10 wired the same way. With advice from a buddy, I wired all 3 separatly, then tied all into one wire that went into the sub. I guess that would be parallel. The Rockford Fosgate Wiring Wizard website ran them from what I understand this way and it brought down to 1.34 ohm load. But now Im being told I may be under 1 ohm, which is not good....

It works, it thumps, but am I going to burn something up this way or did I wire it right???

This stereo will be expected to play hard all day at the lake (in my boat). I wanted to add the 3rd one because moving the bass forward to add fat sacs in the back for wakeboarding.

Now just need to make sure are wired safely.

Please help.....

3 DVC subs, each wired to 2 ohms, all in parallel will get you 2/3 ohms...

If you mean that each voice coil is 2 ohms (4 ohms total for 1 sub), then use this wiring diagram:

http://a248.e.akamai.net/pix.crutchfield.com/ca/learningcenter/car/subwoofer_wiring/3DVC_2-ohm_mono.jpg

or this one:

http://a248.e.akamai.net/pix.crutchfield.com/ca/learningcenter/car/subwoofer_wiring/3-DVC-2-ohm-mono-low-imp.jpg