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Wiring Amp

 

Bob
New member
Username: Clemsonfan151

Post Number: 1
Registered: Dec-07
Posted on   
I recently got a new amp that I'm going to use to power my subs. It is capable of running at 4.2,1 ohm (like most are). My subs are 2 ohm models. I was just wondering if it is possible to connect both of my 2 ohm subs to my amp in a way that make it put out a 2 ohm signal.

Thanks.
 

cam
Gold Member
Username: •cam•

BC Canada

Post Number: 1391
Registered: Nov-06
Posted on   
The signal isn't 2 ohms.
Two 2 ohm loads wired in parallel will yield a 1 ohm load.
 

Bob
New member
Username: Clemsonfan151

Post Number: 2
Registered: Dec-07
Posted on   
Maybe I'm not explaining it right.

The amp puts out 550 watts at 4 ohms

1100 watts at 2 ohms

and 1600 watts at 1 ohm.

The subs need 500 watts each.

I just want to know if it is possible to wire the subs so that they recieve 500 watts.
 

cam
Gold Member
Username: •cam•

BC Canada

Post Number: 1392
Registered: Nov-06
Posted on   
Nope. Run it at 1 ohm with the gains down.

Welcome to the forum!
 

ctmike
Gold Member
Username: Ctmike

Ct.

Post Number: 5614
Registered: Feb-06
Posted on   
what amp is it?
 

Bob
New member
Username: Clemsonfan151

Post Number: 3
Registered: Dec-07
Posted on   
It's the Hifonics Brutus 1606D.

So there is no way to wire the subs so that they take advantage of the 2 ohm capabliity of the amp?
 

ctmike
Gold Member
Username: Ctmike

Ct.

Post Number: 5615
Registered: Feb-06
Posted on   
no, unless they are dual 2ohm vc subs instead of svc like you typed. but it's a hifonics, so you wont be seeing 1600w anyways, more like 1400w. set the gain correct then back off it some. but what subs are they?
 

Bob
New member
Username: Clemsonfan151

Post Number: 4
Registered: Dec-07
Posted on   
They are Alpine Type R 2 Ohm(Dual Voice Coil)

Did I type single any where?
 

cam
Gold Member
Username: •cam•

BC Canada

Post Number: 1393
Registered: Nov-06
Posted on   
It's good down to one ohm. You're not going to get exactly 2 ohms, anyway. Speakers are reactive loads, so the impedance (I believe the term resistance is used when it's a resistive load) will change with frequency. Then there's box rise, resistance of your conductors, resistance of terminals, etc. Amps will run cooler at higher impedances.
 

cam
Gold Member
Username: •cam•

BC Canada

Post Number: 1394
Registered: Nov-06
Posted on   
Ohhhh. Then you wire coils in series and subs in parallel. That will give you 2 ohms nom.
 

Bob
New member
Username: Clemsonfan151

Post Number: 5
Registered: Dec-07
Posted on   
I figured I wouldn't get an exact 2 ohm load from the amp, but I didn't see why I should put it down to 1 ohm if 2 ohm would be fine.
 

Bob
New member
Username: Clemsonfan151

Post Number: 8
Registered: Dec-07
Posted on   
Sorry about my above post.

So you are now saying that it is possible?
 

M.S.
Gold Member
Username: Nd4spd18

Northwest PA

Post Number: 4987
Registered: Jul-06
Posted on   
Yes it's possible just do what he said, coils in series on each sub, then both subs in parallel.

Also:

Those hifonics amps are overrated, keep that in mind when setting the gain. That amp at 2 ohm will do ~900 watts at the MOST. Probably closer to 800.
 

Bob
New member
Username: Clemsonfan151

Post Number: 9
Registered: Dec-07
Posted on   
Are you serious?

I thought Hifonics was a pretty good brand amp.


If this is true. Would it be better to wire them down to 1 ohm? Would I lose sq or spl? Would the amp get too hot?
 

Bob
New member
Username: Clemsonfan151

Post Number: 10
Registered: Dec-07
Posted on   
^.
 

M.S.
Gold Member
Username: Nd4spd18

Northwest PA

Post Number: 5004
Registered: Jul-06
Posted on   
You can't wire them to 1 ohm if they are dual 2 ohm. You would have to run at 2 ohm and just not be powering the fully, that or get a different amp.


Hifonics are budget quality, and they do about 80% of what the claim for power
 

Bob
Bronze Member
Username: Clemsonfan151

Post Number: 11
Registered: Dec-07
Posted on   
I knew that Hifonics wasn't top of the line, but I thought they were ok.

I figured $199 for a 1100 watt amp at 2 ohm was pretty good.

I suppose you really do get what you pay for.
 

M.S.
Gold Member
Username: Nd4spd18

Northwest PA

Post Number: 5013
Registered: Jul-06
Posted on   
They are ok....... they just lie about their power ratings
 

Bob
Bronze Member
Username: Clemsonfan151

Post Number: 12
Registered: Dec-07
Posted on   
Do they put out on the high side of 80% power or on the low side.

Am I going to be getting around 880 watts or less?
 

M.S.
Gold Member
Username: Nd4spd18

Northwest PA

Post Number: 5020
Registered: Jul-06
Posted on   
Should be about 800-900
 

Bob
Bronze Member
Username: Clemsonfan151

Post Number: 13
Registered: Dec-07
Posted on   
Ok. I think I can live with that wattage right now. I'm not looking to compete or anything close to that.

The subs are rated for 500 rms. Am I'm going to notice a big reduction in quality since they are not receiving their full potential?
 

M.S.
Gold Member
Username: Nd4spd18

Northwest PA

Post Number: 5022
Registered: Jul-06
Posted on   
No. 800-900w compared to 1000w should be barely noticable.
 

Bob
Bronze Member
Username: Clemsonfan151

Post Number: 14
Registered: Dec-07
Posted on   
Ok. Sounds good. Thanks to everyone for their great advice. .
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