lil more help with sub decision... - Toyota Nation Forum : Toyota Car and Truck Forums

***BLUEMEANIE*** · 03-09-2004, 01:25 PM

I have a Kenwood KAC 7295 600w amp and I'm looking at replacing my blown HE2 Dual 4ohm 800w max sub with a new HE2... Should I go with the Dual 4ohm or the Dual 2ohm? Whats the difference? Which would be better with my amp?

4ohm
http://www.sounddomain.com/sku/ROCRFP4210

2ohm
http://www.sounddomain.com/sku/ROCRFP4110

JaJay721 · 03-09-2004, 02:24 PM

Do you mean the 729S? If so you want the dual 2 ohm

***EKam*** · 03-09-2004, 02:31 PM

That amp is too weak for that sub.

***BLUEMEANIE*** · 03-09-2004, 02:32 PM

Quote:

Originally posted by JaJay721
Do you mean the 729S? If so you want the dual 2 ohm

lol. yes.

why the 2 over the 4? whats the difference?

JaJay721 · 03-09-2004, 02:41 PM

The way you wire it up, it has two voice coils which means you have to wire them up in series or parallel. When you do so it either drops or raises the ohm rating. If you had two 4 ohm voice coils your only options to run the speaker would be 8 or 2 ohms. You need the 2 ohm because then you can either run it at 4 ohm or 1 ohm. Your amp's 99% likely wired up bridged unless the installer was the dumbest dipshit ever and so that means it's putting out a 4ohm load. If you're only going to run one speaker you want a 4ohm load to match up to how your sub is currently wired.

***BLUEMEANIE*** · 03-09-2004, 02:49 PM

ok. I understand that much. I definately want the 2ohm, right?

The installer was a friend... aka dipshit

How should I wire up the 2ohm HE2? what to what and where to where, I'm a audio noob.

Option 2?

JaJay721 · 03-09-2004, 02:51 PM

see above..edited the post while you were posting.

JaJay721 · 03-09-2004, 02:52 PM

yes.. took down my image cause yours is easier to see.

Fuck it I'll put it back up, it might help.

***BLUEMEANIE*** · 03-09-2004, 03:00 PM

Sweet! Crash course in audio 101 successful.

THANK YOU!

...the kid who installed it had it in his car wired like that but to both sets of terminals? any idea what he was going for? or was he a dipshit?

***BLUEMEANIE*** · 03-09-2004, 03:02 PM

So I just connect those other two together on their own?

JaJay721 · 03-09-2004, 03:04 PM

Not sure what you're asking. Check your PM to see if what I sent you helps.

JaJay721 · 03-09-2004, 03:07 PM

Waiiit a minute. I just re-read your first post. He had that amp running a dual 4 ohm sub? Ok he was a dumbshit. Ignore what he did.

***BLUEMEANIE*** · 03-09-2004, 03:27 PM

lol. So its +amp to +sub terminal A and -amp to -sub terminal B and +sub terminal B to -sub terminal A