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Rockford Fosgate Speakers

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Just Carl Posted: Sun, Nov 1 2009 10:03 AM

Ok, so I want to put 6x5 Rockford Punch Series Components in the front, and Rockford Punch Series 6x5 speakers in the rear. Then 2 Rockford 12" P2's in the trunk. With a Jensen flip-out monitor (puts out 13 rms x 4). To power the subs I'm gonna go with the Rockford P500-1, and to power the speakers the Rockford P200-2. Both sets of speakers handle 120 rms per set. So the P200-2 would send 100 rms x 2 @ 2ohms giving each speaker 50 rms. Plus the 13 rms from the head unit.

1. Can a 2-channel amp be ran to power 4 speakers?

2. If so will that 2-channel amp plus the 13 rms from the Jensen be ok to run?

3. Will 2 amps call for a high output alternator or anything? I had planned on most likely getting a Rockford 1 farad cap to go with the 500-1 amp.

The car would be a 1990 Honda CRX Si.

Thanks!

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Just Carl:
6x5 Rockford Punch Series Components

Did you mean 6.5" Components?

Just Carl:
Ok, so I want to put 6x5 Rockford Punch Series Components in the front, and Rockford Punch Series 6x5 speakers in the rear. Then 2 Rockford 12" P2's in the trunk. With a Jensen flip-out monitor (puts out 13 rms x 4).

Model numbers would be helpful, especially for the indash...

Just Carl:
To power the subs I'm gonna go with the Rockford P500-1

If you are using that amp, make sure you get the dual 2ohm version of the P2s so you can wire them for a 2ohm final load to the amp.

4ohm version of the P2s so you can wire them for a 1ohm final load to the amp.

Just Carl:
1. Can a 2-channel amp be ran to power 4 speakers?

Yes you can, just wire the speakers in parallel for 2ohm load per channel. That said, I don't normally recommend doing this, especially with component speakers since the passive crossover networks are put in parallel and can create some odd response curves. A better solution would be to run the components off the amp and the rear speakers of the 13W of the HU.

Just Carl:
2. If so will that 2-channel amp plus the 13 rms from the Jensen be ok to run?

If you are using an amp, disregard the 13w of the Jensen. You get the output of the amp OR the output of the Jensen, not both. You can however, power the fronts off the amp for 50W per component, and the rears off the HU for ~13W per rear speaker.

Just Carl:
3. Will 2 amps call for a high output alternator or anything? I had planned on most likely getting a Rockford 1 farad cap to go with the 500-1 amp.

500W Class D + 200W Class A/B? You definitely shouldn't need a high-output alternator, but you would be wise to upgrade the Big Three, and might need a cap if you still have dimming later. Just make sure you upgrade the Big Three before you get the cap.

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Isn't there only one set of Rockford Punch series speakers for each size my man? Yes I mean the 6.5" Fosgate Punch Components. And the speakers handle 60 rms. Isn't pushing 13 rms to them SLIGHTLY underpowering them...?

As for model numbers.

6.5" Fosgate Punch Components

Fosgate P1653 Speakers

Fosgate 12" P2's

Fosgate P200-2

Fosgate P500-1

Jensen VM9213

And for the P2's they handle 250 rms a piece. I'd need the dual 4 ohms since the P500-1 sends 500 rms x 1 @ 1 ohm and 400 rms x 1 @ 2 ohms. And the P200-2 would then send 100 rms to each Component wouldn't they? Which would be overpowering?

Also, what's the big three?

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Just Carl:
Isn't there only one set of Rockford Punch series speakers for each size my man? Yes I mean the 6.5" Fosgate Punch Components.

Yes, RF only makes one Punch series 6.5" components, but I always ask, because almost all speakers change year-to-year.

J Ro:

BTW, we love model numbers!  I personally get a thrill running up my leg when i see things like PPI PC2350.  Post them anytime you need help, because there may be other things to consider...

Just Carl:
And the speakers handle 60 rms. Isn't pushing 13 rms to them SLIGHTLY underpowering them...?

Technically, yes they are underpowered at a mere 13W, but they are only 'rear fill' and don't necessarily need the full power of your front components. If you want more power and volume from them, you would be better off getting a 4ch amp.

Just Carl:
And for the P2's they handle 250 rms a piece. I'd need the dual 4 ohms since the P500-1 sends 500 rms x 1 @ 1 ohm and 400 rms x 1 @ 2 ohms.

Sorry, my mistake...read the specs wrong.

Just Carl:
And the P200-2 would then send 100 rms to each Component wouldn't they? Which would be overpowering?

They would be slightly overpowered, yes. However, I would take a little to much power over a little too little any day of the week. (Read: Headroom!) As an aside, you can adjust the gain to compensate for the lower power ratings. Just because you are using a 100W amp, doesn't necessarily mean that it will output 100W constantly, especially if you dial down the gain.

Just Carl:
Also, what's the big three?

 

  1. Battery (+) to Alternator (+)
  2. Battery (-) to Chassis GND
  3. Engine Block (-) to Chassis GND

 

Read up here.

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So I can get the Rockford P400-4 and send 100 rms to each speaker, then set the gain at 50% and I should be fine correct?

No problem on the specs :P we all misread.

And are those big 3 like specific ways to wire things? If I have it professionally installed and I tell them to focus on the big three and make sure they're done right will they understand?

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P.S. read up on the big three. And that makes sense to me now. I'll buy extra 4g or so wire to wire all of that first. Then if it doesn't solve any issues, I'll look at a cap.

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Just Carl:
So I can get the Rockford P400-4 and send 100 rms to each speaker

You will only get 50W per speaker (4ohm speakers), which still isn't bad, but not the 100W that you may have been hoping for.

Just Carl:
...then set the gain at 50% and I should be fine correct?

Don't just arbitrarily set the gain to 50%! Either use the 'by ear' method described here, or the DMM method described here. I usually use the by-ear method for speakers and a combination of the DMM  and by ear methods for subs.

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GLH replied on Mon, Nov 2 2009 4:19 AM

I would do without rear speakers and just put the stock speaker grills over the rear dash holes, to let more of the sub sound in the cab. I would get a good 2 channel amp that will give the front 6.5's  around 100 watts RMS each.

 

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Just Carl:
And for the P2's they handle 250 rms a piece. I'd need the dual 4 ohms since the P500-1 sends 500 rms x 1 @ 1 ohm and 400 rms x 1 @ 2 ohms.

200W RMS to 250W speakers isn't bad if you went with the DVC-2-ohm subs.  I think you'd be hard-pressed to HEAR a difference either way.

And the P200-2 would then send 100 rms to each Component wouldn't they? Which would be overpowering?

Not if they are 4-ohm components - it will send 50W to them.  (Although I'm not seriously opposed to running all four speakers off the amp - you do lose fader control, though).

Hope This Helps!!!

2002 Ford Focus Sony CDX-GT410u Sony XT-100HD HD Tuner Stock speakers, no amp, no subs

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