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Author Topic: Rockford Amp users...need your advise
Nitro
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I currently have a Rockford Power 250x2(rated 125x2 rms @4ohms), the old one(BBQ style) color gray. My question is, can it handle 2ohms mono? I heard a lot of this kind of setup has been done but there are those also who have failed.

Also, if possible, will it run for hours? Can i play the music for long?

Thanks for all the help..

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Audiophyle
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If it's a power amplifier, it should be able to do 2 ohm mono and never even break a sweat.

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STILL waiting to hear a GOOD pair of HLCD's!!

If it dont fit, force it... if it breaks, it needed to be replaced anyway...

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ShadowStar
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Answer, from experience : If it is an x2 (250x2 amplifier) then YES, it will do a 2 ohm mono and LOVE IT. If it is a 250m2, then I would think twice- It MIGHT make it, but the 500M and 250M2 were notorious for NOT liking a low that low (1ohm mono on the 500m, 2 ohm mono on the 250m2)

Good LUCK!

ShadowStar

BTW- It's not BBQ style.. Its WAFFLE IRON!!! :-)

ShadowStar

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Computers are a lot like air conditioners.. Open Windows and they become useless..

The day Microsoft makes something that doesn't suck is the day they make vacuums.


Posts: 2578 | From: Somewhere In the Northeast | Registered: May 1999  |  IP: Logged | Report this post to a Moderator
Nitro
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Thanks Shadowstar and Audiophyle!! Now I can get myself a pair of 4 ohm subs =)

I have another question...will i be able to run this amp(2ohms mono) even at high volumes? and for a long period?

Which sub may be better four the amp 2 12 RF DVC's or two JLw4's?

Btw, Shadowstar, or anyone, do you know the actual output of the Power 250x2 at 2 ohms mono?

Thanks again for replying! =)

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ShadowStar
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For your info.. If you get the 2 DVC subs, you cannot run the amp in two ohm mono, for each sub can have either a two ohm or eight ohm impedance. For two DVC's, your options are : Two ohm stereo, Eight ohm stereo, one ohm mono, sixteen ohm mono, four ohm mono.

Now I WOULD hesitate before running the amplifier at 1 ohm mono, yes. For two FOUR ohm subs, or at least a 2 ohm mono load, I would recommend you look at 3 JL w6 subs, 3 Eclipse 6 ohm 8810's, and if these options are out of your space/price range, drop back and get something pretty powerful, like Crystal CMP drivers, SoundStream Exacts, ETC.

That amplifier should give you about 1000-1200 watts at 2 ohm mono. Don't waste that much power on 2 XLC 12's, or w4 12's. Thats enough power to drive three subs, (should be), especially in a ported box, or two REALLY high power drivers.

Good LUCK!

ShadowStar

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Computers are a lot like air conditioners.. Open Windows and they become useless..

The day Microsoft makes something that doesn't suck is the day they make vacuums.


Posts: 2578 | From: Somewhere In the Northeast | Registered: May 1999  |  IP: Logged | Report this post to a Moderator
Nitro
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Thanks again Shadowstar! I was considering the Rf dvc's since i heard a lot of good stuff about them eventhough it will give me a 4 ohm mono. Currently, I'm using my amp to run 2(2ohms) 12" solo's in stereo.

I wired the amp to one Sub (2ohms mono) and it sounded great but at volume 9, I hear a poping sound coming out of the sub.

Is it because there's too much power going to the 2ohm 12 solobaric? or is it because I don't have enough current going to the amp?

Finally, sorry for asking to many questions, since the amp will give 1000-1200 watts at 2ohms mono, won't i need more current?

Is there another way to provide amperes without upgrading my alternator? Btw, my car is a '97 honda accord

Thanks for all the help =)

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RFandAlpinefan
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The "popping" you describe might be clipping.

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Ohh Ohh! Can I be punk too? Please?


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Nitro
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But how could i clip my signal if my deck is at volume 9 only and the gains of my amp is almost at minimum?

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ShadowStar
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The popping sound you heard could have been lots of distortion, yes, but it was probably bottoming out of the sub due to the large amount of power across the sub.

Those solo-barics are not designed to be "bottomless" (that is, the motor can throw the coil against the bottom of the magnetic gap) and that was probably what happened. That much power is quite a bit to run those subs. You could try running the two 2 ohm subs in series and bridging them, for a 4 ohm mono load, which will be a lot of power, but I would hold out for 2 4ohm drivers with large excursion.

ShadowStar

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Computers are a lot like air conditioners.. Open Windows and they become useless..

The day Microsoft makes something that doesn't suck is the day they make vacuums.


Posts: 2578 | From: Somewhere In the Northeast | Registered: May 1999  |  IP: Logged | Report this post to a Moderator
Nitro
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With those two subs, the only option is to series wire them but, i read somewhere that series wiring is bad...

Why is this so? What will it do to the subs?

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