Question about Rockford Fosgate Punch P4004 Car Audio Amplifier

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Is it enough to power to 12 volge=ahagen 12oowatss dual 4 ohms

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Your Volfenhag 12" subs are rated at 1200 watts they are only 600 watts rms and the Rockford punch p4004 is only 200 watts rms so the answer is yes it will work but if you get a amplifier that pushes out 500 - 600 watts rms you will love the sound from subs
there is nothing wrong with the Rockford amp it just wont pound out the bass as hard but the good news is you will never blow the subs with it
when buying amps or subs make sure to look at rms rating that is the true power they actually have ie. (sub box says 1200 watt you think powerful but if you divide it in 1/2 you actually get 600 watts rms) don't get me wrong that's a nice rating. for a sub but you will want to match that number with the amps rms rating or lower. The RMS is what makes the car pound the higher the RMS the better
hope this helps

Posted on Mar 06, 2009

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I have a 12 inch audiobahn 550 rms 4 ohm coil ported box and a dual box with 12 inch subs they say 550 max wattas a piece thats it waht amp do i need to get atleast 80% of my power in bass


Get a 1200 watt 4 channel amp that's 2 ohm stable. Bridge 2 channels into the single 550W rms audiobahn. Use the other channels for each side of the dual box. Turn the LPF or Low Pass Filter on and vibrate down the road.

Sep 25, 2010 | Car Audio & Video

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I have a sony xm-2002gtw and i want to know if i can hook two 2-ohm dual subwoofers up to this amp and how i have 2 solo baric 12-inch.


200W x 2 @ 4 Ohm
500W x 1 @ 4 Ohm

This amplifier cannot handle a load lower than 4 Ohms in stereo or bridged mode.

If the subs are Dual 2 ohm - You cannot wire a 4 ohm load with (2) subwoofers.

Only 8, 2, or 1/2 ohm loads are possible with (2) dual 2ohm voicecoils

Thanks!



Feb 15, 2010 | Car Audio & Video

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AMP


That amplifier is only stable to 2 ohms.
You will only be able to use one Dual 4 ohm Subwoofer wired in parallel (all + to + on amp.... all - to - on amp.
This will yield a 2 ohm mono load.

It is impossible to wire (2) dual 4 ohm voicecoils to achieve a 2 ohm mono load.

If you're set on using both subwoofers - they will not be getting as much power from your amplifier with a 4 ohm load - but it is your only option.


SEE THIS LINK for the wiring diagram.

Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

Jul 02, 2009 | Kenwood KAC-8104D Car Audio Amplifier

1 Answer

IF THE WOOFERS HAVE 2 VOC.COIL EACH HOW DO YOU CONNECT WITH THE AMP THAT HAS ONE CHANNEL WITH TWO + AND TWO -.


it depends on the load you want to present to the amp. un 12, 2009 - If woofers are 2 coil, then you definately need to know the impedance of the coils (are they dual 2 ohm, or dual 4 ohm?). For dual 4 ohm speakers you will only be able to acheive a summed load of 1 or 4 ohms. If your amp can handle 1 ohm, then connect this way: 1 ohm: Connect both the positives and the negatives together on each speaker. This puts them in paralell which will result in a 2 ohm load per speaker. After you connect the two 2 ohm loads to the amp, it will see 1 ohm as it's load. If your amp can handle this, this is usually the lowest configuration capable by consumer stuff, (if you are not doing competition or some crazy thing), and few amps are rated for 1 ohm so it's not really recommended and may heat up or blow your amp. 4 ohm: Connect one negative to one positive terminal on one speaker. Drive the other open terminals with the amp. This places coils in series and results in an 8 ohm load per speaker. After connecting both speakers to the amp, the amp will see a 4 ohm load. In both cases, the rates power of the amp (at that load) will be divided equally between the speakers. Jun 12, 2009 - For dual 2 ohm speakers, the only loads you can achieve are .5 ohm (1/2 ohm), and 2 ohm. The connections are the same as above, and this results in: ...If coils for each speaker are wired in paralell, the results are 1 ohm per speaker, and after connection, the amp sees 1/2 an ohm. (.5 ohm) ...If coils are wired in series, the result is 4 ohms per speaker, and the amp will see 2 ohms after both are connected.

Jun 12, 2009 | Volfenhag ZX-4712 Car Subwoofer

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I cant bridge my us2300 to my 2-12


all amps are bridgeabal .
what you need to fine out what ohms can it handle 1 -2 -4 ohms
and fine out your woofers are ?
like dual 4 ohms or single 4 ohms ..

Mar 08, 2009 | Car Audio & Video

2 Answers

Kenwood KAC-9152D monoblock


The amp says it's 1 ohm stable, so assuming the DVCs are dual 4 ohm, you should be able to connect all "+"'s together and all "-"s together, like the picture below:
0f1cebe.jpg

As for the amp shutting off for a few seconds, it sounds like it's either:
A) Not getting enough power at high volume.
OR
B) Overheating.

The cap on the +12V to the amp should help, but putting a meter on the +12V might tell you whether it's dropping too low (<11V).

When you first turn the volume up, how long does it work fine before shutting off? Is it with the vehicle running or not?

Mar 25, 2008 | Kenwood KAC-9152D Car Audio Amplifier

1 Answer

Mmatsd500.2


First, the specs:
  • PPI 4200am = 50x4 at 4 ohms, 100x4 at 2 ohms
  • Alpine 3553 = 35x4 at 4 ohms, 50x4 at 2 ohms
  • Mmats D500.2 = 350x1 at 4 ohms, 500x1 at 2 ohms
  • 3x Mmats Procast 12 = Dual 4 ohm VC
  • 1x JL 15w6 = Dual 6 ohm VC
  • 2x JL 15w0 = Single 8 ohm VC
Second, I don't think I would recommend mixing n' matching the subs. One of the subs would always be working harder than the rest. If you want to run multiple subs, make them all the same. Sometimes, you can get away with it if they are all the same voice coil impedance, but in this case you've got dual 4 ohm, dual 6 ohm, and single 8 ohm subs all in the mix.

If it were me, I'd probably stay with the single 15w6. But it's your money :)

Mar 12, 2008 | Mmats D500.2 Amplifier Car Audio Amplifier

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