Question about Rockford Fosgate Punch 401S Car Audio Amplifier

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Amplifier loads i think I have my subwoofers wired wrong to the amp. Here's how there wired: sub 1, positive of the sub into the 1st positive channel on the amp and negative of the sub into the 1st negative channel. The same goes for my other channel on the amp. What load does this give me? And how would you wire the speakers to the amp? amp: 2 or 4 ohm stable the 2 subs: 1000 watts 1200watts 4 ohm 401s punch bridgeable

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Hello ronnieyannon,
A single 4 ohm speaker wired to each channel, like you have them wired, presents a 4 ohm load. And it appears that you have them connected properly. The 401s is only stable to 4 ohms when bridged, so if you were to parallel the 2 4 ohm subs in bridged mode, the load would be 2 ohms and the amp would most likely overheat and go into protection.

I'd wire them the way you have them wired.

Each channel of the amp outputs only 100 watts into 4 ohms. That is adequate for regular full-range speakers, component speakers, mid-range drivers, and even some small subs. But it is a little low on power for most subwoofer applications.

Hope this helps.

Posted on Apr 23, 2009

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for your subs and amp the best way would be for the speakers to be wired in series1ch (mono or bridged)to have a 4 ohm load to your amp stable at 2 ohms
see pic for wiring diagram for 2 1 ohm dvc subs wired in series.
you will need more than one speaker wire for wiring the subwoofers coils(positive & negative terminals) together
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d831086b-9269-4390-9804-248bc3346c41.jpg

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Pace posted on Saturday, March 05, 2005 - 01:08 GMT Your subs are dual 4 ohm voice coils so if you want to bridge your 2 channel amplifier to your two subs then wire them parallel, meaning the + to + and - to - ( Do this to both subwoofers), Then run a wire from one positive and one negative on each sub and bring the two positives together and the two negatives together and hook both positives to the far positive connection on your amp and connect both negatives to the other negative on your amp,

This will create a 4 ohm load on your amp.

Although if it's a two channel and you have two subs it's usually pointless to bridge them because if you use one channel per subwoofer its going to be the same as if both subs were bridged. example) 800 watts x 1 bridged power of your amplifie (4 ohms) is the same power as 400 watts x 2 at 2 ohms.

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From your information I am assuming that you have a sub that is dual 4ohm voice coils. Also, I am assuming that you have a single channel amplifier. This is easy to get to a 2 ohm load.

First, go from the positive of the amp to the positive of both voice coils. Then go from the negative of the amp to the negative of both voice coils. You should have two sets of wires running to your sub. This is called a parallel set up and decreases the ohms load of the voice coils to a singe 2 ohms If you have a prefab box, just do the same thing, but instead of the amp, you will be wiring to the cup terminal inside. The amp will be wired regular to the cup terminal on the outside with just one wire.

This is all assuming that you are hooking up only one sub. If you attempt to hook up 2 subs like this to a mono amp, you will drop the load to 1 ohm.

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You are doing right on what you described. I really like to work with a clearly described what involved in an issue.

Now we have to use a Voltmeter to check if there is power to the amplifier. If there is power to the amplifier terminal, then the problem is at the amplifier, not the connection. Let check it out:

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Your Amplifier:
125W x 2 @ 4-Ohms RMS
250W x 2 @ 2-Ohms RMS
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Your Subwoofers = Dual 4 ohm
Possible wiring configurations of (2) Dual 4 ohm voicecoil subwoofers are:

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That amplifier is not 1 ohm mono stable.

You need to put a 4 ohm load on the "bridged" terminals of the amplifier

Your best wiring configuration is going to be Series-parallel.

CLICK HERE to see the pic Larger

4721108.jpg You can also get the same result (power) by having the subs wired in parallel independently. Put both + on one sub to one + on the amplifier and both - on one sub to the - of the same channel of the amplifier.
Repeat for channel 2.
This will be a 2 ohm stereo load.
You should only use this method if the subwoofers are in seperate enclosures... not one big cavity.

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what impedence are the voicecoils?
Dual 4 - Dual 2 - Dual 1 ??

Orion SX / GS / HCCA amp Wiring guide:

Orange = Right Positive
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First wire both in Parallel Independently So each subwoofer is now a 2 ohm load. (combine + and + - and- on both subwoofers)

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Parallel would be the best way to wire them. 2 4 ohms subs to one channel wired parallel would be a 2 ohm load for that channel and if u wire them series then 2 4ohm subs to one channel would be an 8 ohm load for that channel.

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