Majestic

iTrader: (9)

Hey ppl. I have a 2 channel Rockford Fosgate 501s amp. The amp specs are:
125 watts RMS x 2 at 4 ohms
250 watts RMS x 2 at 2 ohms
500 watts RMS x 1 at 4 ohms in bridged mode
stereo or bridged mono output
4-ohm stable in bridged mode
Tri-Way capable

I just blew the coils on a Infinity Reference 1230w.

I just bought an Audiobahn AW1206T. The RMS is 1100(so they say). It has dual 4ohm voice coils. My question is: What is the best and loudest way to run this sub to this amplifier? From what the manaul says, the amp is not 1ohm stable. I guess what I'm trying to say is how can I produce a 4 ohm load to this amp with both voice coils being active?

AscendantMax

iTrader: (7)

since the sub is dual 4, you can either wire it to 2 or 8 ohms, parallel and series wiring, respectively.

i'd return the sub and get a dual 2 version. then wire the coils into a series (to get 4 ohms), and bridge the amp to power it.

kpr10is

iTrader: (9)

+1 to the above post. The only way to wire that would be one coil per channel, which kinda sucks.

AscendantMax

iTrader: (7)

yeah, or if you don't want to return the sub, get a RCA splitter and run one R to two Rs (or one L to two L) so that the coils will get the same signal.

505max94se

iTrader: (15)

run it at 4 ohm stereo (it's the only way, not much power though)

one voice coil to one channel (dvc, 2ch)

I'd get a different sub or amp.

AscendantMax

iTrader: (7)

ehh...if he ran it 4 ohm stereo...each coil might get different signals...instead of 1 clean one...

Majestic

iTrader: (9)

Thanks guys. This amp's manual says not to present a bridged signal that is lower than 4ohms....However I hooked up my friend's Sony's(2 12s) in parallel and presented a 2ohm load and it works fine. If it has been working fine for a couple days is it fine to keep it like that? Somebody told me to just throw in some lower amp fuses to be safe. How true is this?

filtor1

iTrader: (7)

Will it work, yes, is it a good idea, no. Your solution will take out the weaker of the two, subs or amp.

Tigger

iTrader: (1)

I have been running a Alpine type R DVC wired at 2 ohms off of a Fosgate 500a2 for 3 years now (in my Jeep). The amp will get very hot and go into thermal shutdown after about 3 songs if there is not a lot off cooling (ie, back seat donw over it). But if the seat is up, the amp will run for several hours before shutting down.
I know it is not recommended, but it works.
I also do the same with my PPI PC2600 and the same sub. It has a fan and has never shut down.
Best option is to exchange the sub or get an amp that is 2 ohm stable.

PHXBird

PPL I need help I have a Majestic amp and a pair of Rockford Fosgate P3 12in. I would like to know how to wire it so that I get 1 ohm

The subs are Dual 4 ohm 1000 watts 500 RMS each
The amp is 2000 watts peak
1000 watts x 1ch Rms @ 1ohm
600 watts x 1 ch Rms @ 2ohm
400 watts x1 ch Rms @4ohm
How do I get the most out of this amp?

Batxel

iTrader: (1)

this site has a nice layout with pics and diagrams. Put in 2 speakers and dual voice coil 4 ohm...
http://www.the12volt.com/caraudio/wo...igurations.asp

djfrestyl

iTrader: (89)

Oh look, a 6 year old thread.

Here's another site that has wiring configurations:
http://www.crutchfield.com/S-LNFd7Yw...rs_wiring.html