.7 ohms or 3 ohms?????

[kramer_212 10+ year member]

well my second w7 is supposed to come tomorrow and still undecided on how I am going to wire it.

AMPS: 2 Rockford Fosgate t1500-1bdcps 1000rms at 4 ohm and 1500rms at 1 ohm (underrated)

actually does 1200rms at 4 ohm and 1780 at 2 ohms and 1890 at 1 ohm.

Woofers dual 1.5 ohms each.

should i wire to .7 and have more power available not really sure if they can handle over 2k rms very long. the efficacy of the amp also drops about 20% going from 3 ohm to .7 and the dampening factor is lowered.

95% sure im going to do a 3 ohm impedance on each amp

anybody have an argument against it?

 

---------- Post added at 01:06 AM ---------- Previous post was at 01:05 AM ----------

 

oh yeah and when my new 400 amp alt gets here 300 at idle im going to run it at 15.2 volts

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[Louisiana_CRX 5,000+ posts]

with box rise .7 should be fine

 

[kramer_212 10+ year member]

with box rise .7 should be fine

I also thought about this, but for another month or so im going to be using my my 160 amp alt 100 at idle, and i feel as though she will die. before months end.

 

---------- Post added at 01:13 AM ---------- Previous post was at 01:13 AM ----------

 

with box rise .7 should be fine

I also thought about this, but for another month or so im going to be using my my 160 amp alt 100 at idle, and i feel as though she will die. before months end.

 

[kramer_212 10+ year member]

holy smokes i looked again and it looks like efficancy goes down by more than 25% //content.invisioncic.com/y282845/emoticons/furious.gif.fc81ca146dbff91fede3ed290dbc4f4c.gif

think i will run 3 ohm for now, and when i get my new alt try .7 but i would imagine at 15.2 each amp after rise will still do over 1400rms after wire loss and such.

but then again i really dont "bump" that often anymore.