Need advice for a replacement sub!

[ebrammer252]

I've been running an Alpine MRP-M450 and two Alpine 12" Type E subs in parallel wiring (I believe) for years and one of my subs finally gave out. Unfortunately the SWE-1243 is no longer available and I don't know where to begin looking for suitable replacements. I don't want to change my amp out of I can avoid it and I'm a big fan of Alpine as I've had zero problems out of the headunit, the speakers, the amp and the subs until now, the system has remained unchanged (except the car it's in) for 7-8 years now.

I'm looking at the specs for the SWE-1243 and it is :

"12" 4-ohm subwoofer

Kevlar® treated pulp woofer cone with Santoprene rubber surround

dual oversized Nomex® spiders

frequency response: 27-1,000 Hz

power range: 100-250 watts RMS

peak power: 700 watts

sensitivity: 86 dB

top mount depth: 5-11/16"

sealed box volume: 1.0-2.0 cubic feet

ported box volume 1.25-2.5 cubic feet

warranty: 1 year"

In looking at replacements I see a lot of the newer Alpine stuff is 50-250 RMS, but the peak power is higher. I also notice the frequency response in the new (and cheap) Alpine is much less (22-200 Hz on the Alpine SWA-12S4 I don't quite know what that means, but it seems like a negative thing? haha

Any recommendations and/or advice is greatly appreciated!

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[Polar]

get the SWS12d4's and wire the amp up for 2 ohms. I had them before my soundqubed and they slammed great with 450 going to them

 

[ebrammer252]

get the SWS12d4's and wire the amp up for 2 ohms. I had them before my soundqubed and they slammed great with 450 going to them

Thank you for your reply! I believe I have my current subs wired in 2 ohms? See the picture below to help me verify?

Pardon my ****** paint skills...

Also, aren't the SWS12d4's 500w RMS? If my MRP-M450 is 220 watts RMS x 1 at 4 ohms (400 watts RMS x 1 at 2 ohms) wouldn't that be underpowering the subs? Then again, I can't remember it's been so long, is it best to underpower but not overpower? or the other way around?

 

[Polar]

Ive thrown 650 at them with no problem, they did get a little stinky but they are still in operation today with the same amp you are using.

 

[ebrammer252]

Ive thrown 650 at them with no problem, they did get a little stinky but they are still in operation today with the same amp you are using.

The other option someone suggested were these : JBL GT5-12D 12" Dual 4 ohm GT Car Subwoofer - Sonic Electronix

Also, am I correct in assuming my current setup is wired in 2 ohm?

 

[Polar]

yes thats correct

 

[ebrammer252]

The sws12d4 have two sets of terminals on the back of the sub, would I be wiring up just one set of terminals on each sub?

 

[Polar]

pos and neg on one set get jumped together then you wire your pos and neg from your amp to the other 2 sets of terminals. do that to both subs and the amp will see a 2 ohm load.

 

[Massive spl]

The sws12d4 have two sets of terminals on the back of the sub, would I be wiring up just one set of terminals on each sub?

Bro just use 12volt wiring diagram or Rockford woofer wizard diagram and it shows you how to wire woofers. Simple

 

[ebrammer252]

Perhaps point me in the right direction?