Two 400RMS subs - how much wattage?

[Drowsy 10+ year member]

Hello,

I have two 12" Polk MOMO 2124 SVC's rated at 400W RMS and 800MAX each. I am questioning about the amp.

Right now I have a Polk MOMO C500.1 which, according to my understanding, would only be giving each sub about 250watts each when they should be getting almost double that. Correct so far? So I was thinking of trading it in for a Alpine MRP-M850 rated at

Per channel into 4 ohms: 500W x 1 (0.08% THD)

Per channel into 2 ohms: 800W x 1

At 2 ohms, which i should be running?, would be 400 watts to each woofer, thus maximizing sound and performance, correct? Better choice?

Would this work?

Thanks,

Drowsy

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[TWOJZ]

not even worth it.

 

[stuckinok 5,000+ posts]

Yes

 

[stuckinok 5,000+ posts]

get the new amp

 

[cheeto 10+ year member]

I'd go with the new amp for the more power. 250 vs. 400 RMS should give you a difference given the rms wattage of the subs.

 

[Scoobydoo 5,000+ posts]

they will run fine on 250 each

 

[Drowsy 10+ year member]

But will 250 be substantial given it comes up 150 short of the rms of the subs? I want this shit to pound, but to also be right and worth my time and money.

 

[TWOJZ]

increasing the power from 250watts per sub, to 400watts per sub, is likely to see an increase of about 1dB...

 

[luvinthebass 5,000+ posts]

But will 250 be substantial given it comes up 150 short of the rms of the subs? I want this shit to pound, but to also be right and worth my time and money.

it'll still pound with that much power dude.

 

[Drowsy 10+ year member]

So it might not even be worth it, I mean I can get the alpine amp for 50 bucks cheaper, but after i have to send the c500.1 back it wouldnt even be worth my time.

I guess I will be keeping the c500.1 after all. Thanks for the help guys, being that I am new to this. I just dont understand how it wont make that much of a difference adding another 150 watts to each sub. System is

Clarion VRX775VD 7in Screen w/ CCA673 iPod Cable

Polk db501's 5"

Audiobahn 3.5's

Polk MOMO C400.4 For the 5s and 3.5s.

2 Polk MOMO 2124 SVC's

Polk MOMO C500.1 for the subs

 

[ultimate157 5,000+ posts]

So it might not even be worth it, I mean I can get the alpine amp for 50 bucks cheaper, but after i have to send the c500.1 back it wouldnt even be worth my time.
I guess I will be keeping the c500.1 after all. Thanks for the help guys, being that I am new to this. I just dont understand how it wont make that much of a difference adding another 150 watts to each sub.

Doubling the power (from say 250w to 500w) will only yield an ~3db increase in output.

In order to double your output (+10db) you would have to throw 2700w on each sub //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[helotaxi 5,000+ posts]

You don't have to run RMS power to the sub. It's a max value not a min or even recommended.

 

[Drowsy 10+ year member]

OK, I guess I will just keep the C500.1, being that I already have it. I do have a question though -

If 400watts RMS is the max wattage that can be drove into the woofer, what is the 800watts MAX for?

 

[ThatChevyGuy 5,000+ posts]

a gay fake maybe for a second rating.

 

[tcguy85 10+ year member]

yea keep the amp you have. get more efficient subs if you want it louder.... or use a ported box tuned low.